pull tags and late fixes back from viewer-pre-beta

72 files changed, 4613 insertions, 1452 deletions

diff --git a/.hgtags b/.hgtags
index a8cae0056d..f5e5ea5ed0 100644
--- a/.hgtags
+++ b/.hgtags
@@ -52,6 +52,7 @@ a82e5b1e22c7f90e3c7977d146b80588f004ed0d 2.5.0-start
 345b17e7cf630db77e840b4fe3451bd476d750a3 76f586a8e22b
 0000000000000000000000000000000000000000 76f586a8e22b
 54d772d8687c69b1d773f6ce14bbc7bdc9d6c05f 2.5.0-beta2
+b542f8134a2bb5dd054ff4e509a44b2ee463b1bf nat-eventapi2-base
 7076e22f9f43f479a4ea75eac447a36364bead5a DRTVWR-5_2.2.0-beta1
 9822eb3e25f7fe0c28ffd8aba45c507caa383cbc DRTVWR-3_2.2.0-beta2
 b0cd7e150009809a0b5b0a9d5785cd4bb230413a DRTVWR-7_2.2.0-beta3
@@ -70,6 +71,7 @@ b723921b5c711bd24dbe77dc76ef488b544dac78 DRTVWR-34_2.5.0-beta3
 b723921b5c711bd24dbe77dc76ef488b544dac78 2.5.0-release
 b723921b5c711bd24dbe77dc76ef488b544dac78 DRTVWR-31_2.5.0-release
 92e58e51776a4f8c29069b1a62ff21454d2085f0 2.6.0-start
+3178e311da3a8739a85363665006ea3c4610cad4 dons-headless-hackathon-work
 63a6aedfce785a6c760377bf685b2dae616797d2 2.5.1-start
 4dede9ae1ec74d41f6887719f6f1de7340d8578d 2.5.1-release
 4dede9ae1ec74d41f6887719f6f1de7340d8578d DRTVWR-37_2.5.1-release
@@ -88,6 +90,8 @@ c5bdef3aaa2744626aef3c217ce29e1900d357b3 DRTVWR-43_2.6.1-beta1
 c5bdef3aaa2744626aef3c217ce29e1900d357b3 2.6.1-beta1
 9e4641f4a7870c0f565a25a2971368d5a29516a1 DRTVWR-41_2.6.0-beta2
 9e4641f4a7870c0f565a25a2971368d5a29516a1 2.6.0-beta2
+c9182ed77d427c759cfacf49a7b71a2e20d522aa DRTVWR-42_2.6.1-release
+c9182ed77d427c759cfacf49a7b71a2e20d522aa 2.6.1-release
 56b2778c743c2a964d82e1caf11084d76a87de2c 2.6.2-start
 42f32494bac475d0737799346f6831558ae8bf5d DRTVWR-39_2.6.0-release
 42f32494bac475d0737799346f6831558ae8bf5d 2.6.0-release
@@ -95,3 +99,5 @@ d1203046bb653b763f835b04d184646949d8dd5c DRTVWR-45_2.6.2-beta1
 d1203046bb653b763f835b04d184646949d8dd5c 2.6.2-beta1
 52b2263ab28f0976c689fd0b76c55a9eb027cdbf end-of-develop.py
 ec32f1045e7c2644015245df3a9933620aa194b8 2.6.3-start
+d7fcefabdf32bb61a9ea6d6037c1bb26190a85bc DRTVWR-47_2.6.3-beta1
+d7fcefabdf32bb61a9ea6d6037c1bb26190a85bc 2.6.3-beta1
diff --git a/BuildParams b/BuildParams
index deaea5e047..8b96bf34bd 100644
--- a/BuildParams
+++ b/BuildParams
@@ -66,7 +66,8 @@ viewer-pre-release.viewer_channel = "Second Life Release"
 viewer-pre-release.login_channel = "Second Life Release"
 viewer-pre-release.build_debug_release_separately = true
 viewer-pre-release.build_viewer_update_version_manager = true
-viewer-pre-release.release-viewer.jira = DRTVWR-42
+#viewer-pre-release.release-viewer.jira = DRTVWR-13
+
 # =======================================
 # brad
 # ========================================
@@ -154,8 +155,7 @@ media.build_viewer_update_version_manager = false
 # oz
 # ================
 
-oz-viewer-devreview.build_debug_release_separately = true
-viewer-devreview.build_debug_release_separately = true
+oz_viewer-devreview.build_debug_release_separately = true
 oz_viewer-poreview.build_debug_release_separately = true
 oz-project-1.build_debug_release_separately = true
 oz-project-2.build_debug_release_separately = true
diff --git a/doc/contributions.txt b/doc/contributions.txt
index 71c54e8624..b6b2d379d0 100644
--- a/doc/contributions.txt
+++ b/doc/contributions.txt
@@ -417,6 +417,7 @@ Jonathan Yap
 	STORM-1020
 	STORM-1064
 	STORM-960
+	STORM-1094
 	STORM-1077
 	STORM-953
 Kage Pixel
@@ -440,6 +441,8 @@ Kitty Barnett
 Kunnis Basiat
 	VWR-82
 	VWR-102
+Lance Corrimal
+	VWR-25269
 Latif Khalifa
 	VWR-5370
 Lisa Lowe
diff --git a/indra/llcommon/CMakeLists.txt b/indra/llcommon/CMakeLists.txt
index 6439ac3349..22e0705036 100644
--- a/indra/llcommon/CMakeLists.txt
+++ b/indra/llcommon/CMakeLists.txt
@@ -63,6 +63,7 @@ set(llcommon_SOURCE_FILES
     llformat.cpp
     llframetimer.cpp
     llheartbeat.cpp
+    llinstancetracker.cpp
     llliveappconfig.cpp
     lllivefile.cpp
     lllog.cpp
@@ -314,6 +315,7 @@ if (LL_TESTS)
   LL_ADD_INTEGRATION_TEST(lluri "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(reflection "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(stringize "" "${test_libs}")
+  LL_ADD_INTEGRATION_TEST(lleventdispatcher "" "${test_libs}")
 
   # *TODO - reenable these once tcmalloc libs no longer break the build.
   #ADD_BUILD_TEST(llallocator llcommon)
diff --git a/indra/llcommon/lleventdispatcher.cpp b/indra/llcommon/lleventdispatcher.cpp
index d6e820d793..5b6d4efbe9 100644
--- a/indra/llcommon/lleventdispatcher.cpp
+++ b/indra/llcommon/lleventdispatcher.cpp
@@ -41,6 +41,354 @@
 #include "llevents.h"
 #include "llerror.h"
 #include "llsdutil.h"
+#include "stringize.h"
+#include <memory>                   // std::auto_ptr
+
+/*****************************************************************************
+*   LLSDArgsSource
+*****************************************************************************/
+/**
+ * Store an LLSD array, producing its elements one at a time. Die with LL_ERRS
+ * if the consumer requests more elements than the array contains.
+ */
+class LL_COMMON_API LLSDArgsSource
+{
+public:
+    LLSDArgsSource(const std::string function, const LLSD& args);
+    ~LLSDArgsSource();
+
+    LLSD next();
+
+    void done() const;
+
+private:
+    std::string _function;
+    LLSD _args;
+    LLSD::Integer _index;
+};
+
+LLSDArgsSource::LLSDArgsSource(const std::string function, const LLSD& args):
+    _function(function),
+    _args(args),
+    _index(0)
+{
+    if (! (_args.isUndefined() || _args.isArray()))
+    {
+        LL_ERRS("LLSDArgsSource") << _function << " needs an args array instead of "
+                                  << _args << LL_ENDL;
+    }
+}
+
+LLSDArgsSource::~LLSDArgsSource()
+{
+    done();
+}
+
+LLSD LLSDArgsSource::next()
+{
+    if (_index >= _args.size())
+    {
+        LL_ERRS("LLSDArgsSource") << _function << " requires more arguments than the "
+                                  << _args.size() << " provided: " << _args << LL_ENDL;
+    }
+    return _args[_index++];
+}
+
+void LLSDArgsSource::done() const
+{
+    if (_index < _args.size())
+    {
+        LL_WARNS("LLSDArgsSource") << _function << " only consumed " << _index
+                                   << " of the " << _args.size() << " arguments provided: "
+                                   << _args << LL_ENDL;
+    }
+}
+
+/*****************************************************************************
+*   LLSDArgsMapper
+*****************************************************************************/
+/**
+ * From a formal parameters description and a map of arguments, construct an
+ * arguments array.
+ *
+ * That is, given:
+ * - an LLSD array of length n containing parameter-name strings,
+ *   corresponding to the arguments of a function of interest
+ * - an LLSD collection specifying default parameter values, either:
+ *   - an LLSD array of length m <= n, matching the rightmost m params, or
+ *   - an LLSD map explicitly stating default name=value pairs
+ * - an LLSD map of parameter names and actual values for a particular
+ *   function call
+ * construct an LLSD array of actual argument values for this function call.
+ *
+ * The parameter-names array and the defaults collection describe the function
+ * being called. The map might vary with every call, providing argument values
+ * for the described parameters.
+ *
+ * The array of parameter names must match the number of parameters expected
+ * by the function of interest.
+ *
+ * If you pass a map of default parameter values, it provides default values
+ * as you might expect. It is an error to specify a default value for a name
+ * not listed in the parameters array.
+ *
+ * If you pass an array of default parameter values, it is mapped to the
+ * rightmost m of the n parameter names. It is an error if the default-values
+ * array is longer than the parameter-names array. Consider the following
+ * parameter names: ["a", "b", "c", "d"].
+ *
+ * - An empty array of default values (or an isUndefined() value) asserts that
+ *   every one of the above parameter names is required.
+ * - An array of four default values [1, 2, 3, 4] asserts that every one of
+ *   the above parameters is optional. If the current parameter map is empty,
+ *   they will be passed to the function as [1, 2, 3, 4].
+ * - An array of two default values [11, 12] asserts that parameters "a" and
+ *   "b" are required, while "c" and "d" are optional, having default values
+ *   "c"=11 and "d"=12.
+ *
+ * The arguments array is constructed as follows:
+ *
+ * - Arguments-map keys not found in the parameter-names array are ignored.
+ * - Entries from the map provide values for an improper subset of the
+ *   parameters named in the parameter-names array. This results in a
+ *   tentative values array with "holes." (size of map) + (number of holes) =
+ *   (size of names array)
+ * - Holes are filled with the default values.
+ * - Any remaining holes constitute an error.
+ */
+class LL_COMMON_API LLSDArgsMapper
+{
+public:
+    /// Accept description of function: function name, param names, param
+    /// default values
+    LLSDArgsMapper(const std::string& function, const LLSD& names, const LLSD& defaults);
+
+    /// Given arguments map, return LLSD::Array of parameter values, or LL_ERRS.
+    LLSD map(const LLSD& argsmap) const;
+
+private:
+    static std::string formatlist(const LLSD&);
+
+    // The function-name string is purely descriptive. We want error messages
+    // to be able to indicate which function's LLSDArgsMapper has the problem.
+    std::string _function;
+    // Store the names array pretty much as given.
+    LLSD _names;
+    // Though we're handed an array of name strings, it's more useful to us to
+    // store it as a map from name string to position index. Of course that's
+    // easy to generate from the incoming names array, but why do it more than
+    // once?
+    typedef std::map<LLSD::String, LLSD::Integer> IndexMap;
+    IndexMap _indexes;
+    // Generated array of default values, aligned with the array of param names.
+    LLSD _defaults;
+    // Indicate whether we have a default value for each param.
+    typedef std::vector<char> FilledVector;
+    FilledVector _has_dft;
+};
+
+LLSDArgsMapper::LLSDArgsMapper(const std::string& function,
+                               const LLSD& names, const LLSD& defaults):
+    _function(function),
+    _names(names),
+    _has_dft(names.size())
+{
+    if (! (_names.isUndefined() || _names.isArray()))
+    {
+        LL_ERRS("LLSDArgsMapper") << function << " names must be an array, not " << names << LL_ENDL;
+    }
+    LLSD::Integer nparams(_names.size());
+    // From _names generate _indexes.
+    for (LLSD::Integer ni = 0, nend = _names.size(); ni < nend; ++ni)
+    {
+        _indexes[_names[ni]] = ni;
+    }
+
+    // Presize _defaults() array so we don't have to resize it more than once.
+    // All entries are initialized to LLSD(); but since _has_dft is still all
+    // 0, they're all "holes" for now.
+    if (nparams)
+    {
+        _defaults[nparams - 1] = LLSD();
+    }
+
+    if (defaults.isUndefined() || defaults.isArray())
+    {
+        LLSD::Integer ndefaults = defaults.size();
+        // defaults is a (possibly empty) array. Right-align it with names.
+        if (ndefaults > nparams)
+        {
+            LL_ERRS("LLSDArgsMapper") << function << " names array " << names
+                                      << " shorter than defaults array " << defaults << LL_ENDL;
+        }
+
+        // Offset by which we slide defaults array right to right-align with
+        // _names array
+        LLSD::Integer offset = nparams - ndefaults;
+        // Fill rightmost _defaults entries from defaults, and mark them as
+        // filled
+        for (LLSD::Integer i = 0, iend = ndefaults; i < iend; ++i)
+        {
+            _defaults[i + offset] = defaults[i];
+            _has_dft[i + offset] = 1;
+        }
+    }
+    else if (defaults.isMap())
+    {
+        // defaults is a map. Use it to populate the _defaults array.
+        LLSD bogus;
+        for (LLSD::map_const_iterator mi(defaults.beginMap()), mend(defaults.endMap());
+             mi != mend; ++mi)
+        {
+            IndexMap::const_iterator ixit(_indexes.find(mi->first));
+            if (ixit == _indexes.end())
+            {
+                bogus.append(mi->first);
+                continue;
+            }
+
+            LLSD::Integer pos = ixit->second;
+            // Store default value at that position in the _defaults array.
+            _defaults[pos] = mi->second;
+            // Don't forget to record the fact that we've filled this
+            // position.
+            _has_dft[pos] = 1;
+        }
+        if (bogus.size())
+        {
+            LL_ERRS("LLSDArgsMapper") << function << " defaults specified for nonexistent params "
+                                      << formatlist(bogus) << LL_ENDL;
+        }
+    }
+    else
+    {
+        LL_ERRS("LLSDArgsMapper") << function << " defaults must be a map or an array, not "
+                                  << defaults << LL_ENDL;
+    }
+}
+
+LLSD LLSDArgsMapper::map(const LLSD& argsmap) const
+{
+    if (! (argsmap.isUndefined() || argsmap.isMap() || argsmap.isArray()))
+    {
+        LL_ERRS("LLSDArgsMapper") << _function << " map() needs a map or array, not "
+                                  << argsmap << LL_ENDL;
+    }
+    // Initialize the args array. Indexing a non-const LLSD array grows it
+    // to appropriate size, but we don't want to resize this one on each
+    // new operation. Just make it as big as we need before we start
+    // stuffing values into it.
+    LLSD args(LLSD::emptyArray());
+    if (_defaults.size() == 0)
+    {
+        // If this function requires no arguments, fast exit. (Don't try to
+        // assign to args[-1].)
+        return args;
+    }
+    args[_defaults.size() - 1] = LLSD();
+
+    // Get a vector of chars to indicate holes. It's tempting to just scan
+    // for LLSD::isUndefined() values after filling the args array from
+    // the map, but it's plausible for caller to explicitly pass
+    // isUndefined() as the value of some parameter name. That's legal
+    // since isUndefined() has well-defined conversions (default value)
+    // for LLSD data types. So use a whole separate array for detecting
+    // holes. (Avoid std::vector<bool> which is known to be odd -- can we
+    // iterate?)
+    FilledVector filled(args.size());
+
+    if (argsmap.isArray())
+    {
+        // Fill args from array. If there are too many args in passed array,
+        // ignore the rest.
+        LLSD::Integer size(argsmap.size());
+        if (size > args.size())
+        {
+            // We don't just use std::min() because we want to sneak in this
+            // warning if caller passes too many args.
+            LL_WARNS("LLSDArgsMapper") << _function << " needs " << args.size()
+                                       << " params, ignoring last " << (size - args.size())
+                                       << " of passed " << size << ": " << argsmap << LL_ENDL;
+            size = args.size();
+        }
+        for (LLSD::Integer i(0); i < size; ++i)
+        {
+            // Copy the actual argument from argsmap
+            args[i] = argsmap[i];
+            // Note that it's been filled
+            filled[i] = 1;
+        }
+    }
+    else
+    {
+        // argsmap is in fact a map. Walk the map.
+        for (LLSD::map_const_iterator mi(argsmap.beginMap()), mend(argsmap.endMap());
+             mi != mend; ++mi)
+        {
+            // mi->first is a parameter-name string, with mi->second its
+            // value. Look up the name's position index in _indexes.
+            IndexMap::const_iterator ixit(_indexes.find(mi->first));
+            if (ixit == _indexes.end())
+            {
+                // Allow for a map containing more params than were passed in
+                // our names array. Caller typically receives a map containing
+                // the function name, cruft such as reqid, etc. Ignore keys
+                // not defined in _indexes.
+                LL_DEBUGS("LLSDArgsMapper") << _function << " ignoring "
+                                            << mi->first << "=" << mi->second << LL_ENDL;
+                continue;
+            }
+            LLSD::Integer pos = ixit->second;
+            // Store the value at that position in the args array.
+            args[pos] = mi->second;
+            // Don't forget to record the fact that we've filled this
+            // position.
+            filled[pos] = 1;
+        }
+    }
+
+    // Fill any remaining holes from _defaults.
+    LLSD unfilled(LLSD::emptyArray());
+    for (LLSD::Integer i = 0, iend = args.size(); i < iend; ++i)
+    {
+        if (! filled[i])
+        {
+            // If there's no default value for this parameter, that's an
+            // error.
+            if (! _has_dft[i])
+            {
+                unfilled.append(_names[i]);
+            }
+            else
+            {
+                args[i] = _defaults[i];
+            }
+        }
+    }
+    // If any required args -- args without defaults -- were left unfilled
+    // by argsmap, that's a problem.
+    if (unfilled.size())
+    {
+        LL_ERRS("LLSDArgsMapper") << _function << " missing required arguments "
+                                  << formatlist(unfilled) << " from " << argsmap << LL_ENDL;
+    }
+
+    // done
+    return args;
+}
+
+std::string LLSDArgsMapper::formatlist(const LLSD& list)
+{
+    std::ostringstream out;
+    const char* delim = "";
+    for (LLSD::array_const_iterator li(list.beginArray()), lend(list.endArray());
+         li != lend; ++li)
+    {
+        out << delim << li->asString();
+        delim = ", ";
+    }
+    return out.str();
+}
 
 LLEventDispatcher::LLEventDispatcher(const std::string& desc, const std::string& key):
     mDesc(desc),
@@ -52,12 +400,181 @@ LLEventDispatcher::~LLEventDispatcher()
 {
 }
 
+/**
+ * DispatchEntry subclass used for callables accepting(const LLSD&)
+ */
+struct LLEventDispatcher::LLSDDispatchEntry: public LLEventDispatcher::DispatchEntry
+{
+    LLSDDispatchEntry(const std::string& desc, const Callable& func, const LLSD& required):
+        DispatchEntry(desc),
+        mFunc(func),
+        mRequired(required)
+    {}
+
+    Callable mFunc;
+    LLSD mRequired;
+
+    virtual void call(const std::string& desc, const LLSD& event) const
+    {
+        // Validate the syntax of the event itself.
+        std::string mismatch(llsd_matches(mRequired, event));
+        if (! mismatch.empty())
+        {
+            LL_ERRS("LLEventDispatcher") << desc << ": bad request: " << mismatch << LL_ENDL;
+        }
+        // Event syntax looks good, go for it!
+        mFunc(event);
+    }
+
+    virtual LLSD addMetadata(LLSD meta) const
+    {
+        meta["required"] = mRequired;
+        return meta;
+    }
+};
+
+/**
+ * DispatchEntry subclass for passing LLSD to functions accepting
+ * arbitrary argument types (convertible via LLSDParam)
+ */
+struct LLEventDispatcher::ParamsDispatchEntry: public LLEventDispatcher::DispatchEntry
+{
+    ParamsDispatchEntry(const std::string& desc, const invoker_function& func):
+        DispatchEntry(desc),
+        mInvoker(func)
+    {}
+
+    invoker_function mInvoker;
+
+    virtual void call(const std::string& desc, const LLSD& event) const
+    {
+        LLSDArgsSource src(desc, event);
+        mInvoker(boost::bind(&LLSDArgsSource::next, boost::ref(src)));
+    }
+};
+
+/**
+ * DispatchEntry subclass for dispatching LLSD::Array to functions accepting
+ * arbitrary argument types (convertible via LLSDParam)
+ */
+struct LLEventDispatcher::ArrayParamsDispatchEntry: public LLEventDispatcher::ParamsDispatchEntry
+{
+    ArrayParamsDispatchEntry(const std::string& desc, const invoker_function& func,
+                             LLSD::Integer arity):
+        ParamsDispatchEntry(desc, func),
+        mArity(arity)
+    {}
+
+    LLSD::Integer mArity;
+
+    virtual LLSD addMetadata(LLSD meta) const
+    {
+        LLSD array(LLSD::emptyArray());
+        // Resize to number of arguments required
+        if (mArity)
+            array[mArity - 1] = LLSD();
+        llassert_always(array.size() == mArity);
+        meta["required"] = array;
+        return meta;
+    }
+};
+
+/**
+ * DispatchEntry subclass for dispatching LLSD::Map to functions accepting
+ * arbitrary argument types (convertible via LLSDParam)
+ */
+struct LLEventDispatcher::MapParamsDispatchEntry: public LLEventDispatcher::ParamsDispatchEntry
+{
+    MapParamsDispatchEntry(const std::string& name, const std::string& desc,
+                           const invoker_function& func,
+                           const LLSD& params, const LLSD& defaults):
+        ParamsDispatchEntry(desc, func),
+        mMapper(name, params, defaults),
+        mRequired(LLSD::emptyMap())
+    {
+        // Build the set of all param keys, then delete the ones that are
+        // optional. What's left are the ones that are required.
+        for (LLSD::array_const_iterator pi(params.beginArray()), pend(params.endArray());
+             pi != pend; ++pi)
+        {
+            mRequired[pi->asString()] = LLSD();
+        }
+
+        if (defaults.isArray() || defaults.isUndefined())
+        {
+            // Right-align the params and defaults arrays.
+            LLSD::Integer offset = params.size() - defaults.size();
+            // Now the name of every defaults[i] is at params[i + offset].
+            for (LLSD::Integer i(0), iend(defaults.size()); i < iend; ++i)
+            {
+                // Erase this optional param from mRequired.
+                mRequired.erase(params[i + offset].asString());
+                // Instead, make an entry in mOptional with the default
+                // param's name and value.
+                mOptional[params[i + offset].asString()] = defaults[i];
+            }
+        }
+        else if (defaults.isMap())
+        {
+            // if defaults is already a map, then it's already in the form we
+            // intend to deliver in metadata
+            mOptional = defaults;
+            // Just delete from mRequired every key appearing in mOptional.
+            for (LLSD::map_const_iterator mi(mOptional.beginMap()), mend(mOptional.endMap());
+                 mi != mend; ++mi)
+            {
+                mRequired.erase(mi->first);
+            }
+        }
+    }
+
+    LLSDArgsMapper mMapper;
+    LLSD mRequired;
+    LLSD mOptional;
+
+    virtual void call(const std::string& desc, const LLSD& event) const
+    {
+        // Just convert from LLSD::Map to LLSD::Array using mMapper, then pass
+        // to base-class call() method.
+        ParamsDispatchEntry::call(desc, mMapper.map(event));
+    }
+
+    virtual LLSD addMetadata(LLSD meta) const
+    {
+        meta["required"] = mRequired;
+        meta["optional"] = mOptional;
+        return meta;
+    }
+};
+
+void LLEventDispatcher::addArrayParamsDispatchEntry(const std::string& name,
+                                                    const std::string& desc,
+                                                    const invoker_function& invoker,
+                                                    LLSD::Integer arity)
+{
+    mDispatch.insert(
+        DispatchMap::value_type(name, DispatchMap::mapped_type(
+                                    new ArrayParamsDispatchEntry(desc, invoker, arity))));
+}
+
+void LLEventDispatcher::addMapParamsDispatchEntry(const std::string& name,
+                                                  const std::string& desc,
+                                                  const invoker_function& invoker,
+                                                  const LLSD& params,
+                                                  const LLSD& defaults)
+{
+    mDispatch.insert(
+        DispatchMap::value_type(name, DispatchMap::mapped_type(
+                                    new MapParamsDispatchEntry(name, desc, invoker, params, defaults))));
+}
+
 /// Register a callable by name
 void LLEventDispatcher::add(const std::string& name, const std::string& desc,
                             const Callable& callable, const LLSD& required)
 {
-    mDispatch.insert(DispatchMap::value_type(name,
-                                             DispatchMap::mapped_type(callable, desc, required)));
+    mDispatch.insert(
+        DispatchMap::value_type(name, DispatchMap::mapped_type(
+                                    new LLSDDispatchEntry(desc, callable, required))));
 }
 
 void LLEventDispatcher::addFail(const std::string& name, const std::string& classname) const
@@ -83,7 +600,7 @@ bool LLEventDispatcher::remove(const std::string& name)
 /// such callable exists, die with LL_ERRS.
 void LLEventDispatcher::operator()(const std::string& name, const LLSD& event) const
 {
-    if (! attemptCall(name, event))
+    if (! try_call(name, event))
     {
         LL_ERRS("LLEventDispatcher") << "LLEventDispatcher(" << mDesc << "): '" << name
                                      << "' not found" << LL_ENDL;
@@ -98,44 +615,29 @@ void LLEventDispatcher::operator()(const LLSD& event) const
     // This could/should be implemented in terms of the two-arg overload.
     // However -- we can produce a more informative error message.
     std::string name(event[mKey]);
-    if (! attemptCall(name, event))
+    if (! try_call(name, event))
     {
         LL_ERRS("LLEventDispatcher") << "LLEventDispatcher(" << mDesc << "): bad " << mKey
                                      << " value '" << name << "'" << LL_ENDL;
     }
 }
 
-bool LLEventDispatcher::attemptCall(const std::string& name, const LLSD& event) const
+bool LLEventDispatcher::try_call(const LLSD& event) const
 {
-    DispatchMap::const_iterator found = mDispatch.find(name);
-    if (found == mDispatch.end())
-    {
-        // The reason we only return false, leaving it up to our caller to die
-        // with LL_ERRS, is that different callers have different amounts of
-        // available information.
-        return false;
-    }
-    // Found the name, so it's plausible to even attempt the call. But first,
-    // validate the syntax of the event itself.
-    std::string mismatch(llsd_matches(found->second.mRequired, event));
-    if (! mismatch.empty())
-    {
-        LL_ERRS("LLEventDispatcher") << "LLEventDispatcher(" << mDesc << ") calling '" << name
-                                     << "': bad request: " << mismatch << LL_ENDL;
-    }
-    // Event syntax looks good, go for it!
-    (found->second.mFunc)(event);
-    return true;                    // tell caller we were able to call
+    return try_call(event[mKey], event);
 }
 
-LLEventDispatcher::Callable LLEventDispatcher::get(const std::string& name) const
+bool LLEventDispatcher::try_call(const std::string& name, const LLSD& event) const
 {
     DispatchMap::const_iterator found = mDispatch.find(name);
     if (found == mDispatch.end())
     {
-        return Callable();
+        return false;
     }
-    return found->second.mFunc;
+    // Found the name, so it's plausible to even attempt the call.
+    found->second->call(STRINGIZE("LLEventDispatcher(" << mDesc << ") calling '" << name << "'"),
+                        event);
+    return true;                    // tell caller we were able to call
 }
 
 LLSD LLEventDispatcher::getMetadata(const std::string& name) const
@@ -147,9 +649,8 @@ LLSD LLEventDispatcher::getMetadata(const std::string& name) const
     }
     LLSD meta;
     meta["name"] = name;
-    meta["desc"] = found->second.mDesc;
-    meta["required"] = found->second.mRequired;
-    return meta;
+    meta["desc"] = found->second->mDesc;
+    return found->second->addMetadata(meta);
 }
 
 LLDispatchListener::LLDispatchListener(const std::string& pumpname, const std::string& key):
@@ -164,3 +665,8 @@ bool LLDispatchListener::process(const LLSD& event)
     (*this)(event);
     return false;
 }
+
+LLEventDispatcher::DispatchEntry::DispatchEntry(const std::string& desc):
+    mDesc(desc)
+{}
+
diff --git a/indra/llcommon/lleventdispatcher.h b/indra/llcommon/lleventdispatcher.h
index dfffd59eb6..7acc61de4e 100644
--- a/indra/llcommon/lleventdispatcher.h
+++ b/indra/llcommon/lleventdispatcher.h
@@ -27,18 +27,56 @@
  * 
  * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
  * $/LicenseInfo$
+ *
+ * The invoker machinery that constructs a boost::fusion argument list for use
+ * with boost::fusion::invoke() is derived from
+ * http://www.boost.org/doc/libs/1_45_0/libs/function_types/example/interpreter.hpp
+ * whose license information is copied below:
+ *
+ * "(C) Copyright Tobias Schwinger
+ *
+ * Use modification and distribution are subject to the boost Software License,
+ * Version 1.0. (See http://www.boost.org/LICENSE_1_0.txt)."
  */
 
 #if ! defined(LL_LLEVENTDISPATCHER_H)
 #define LL_LLEVENTDISPATCHER_H
 
+// nil is too generic a term to be allowed to be a global macro. In
+// particular, boost::fusion defines a 'class nil' (properly encapsulated in a
+// namespace) that a global 'nil' macro breaks badly.
+#if defined(nil)
+// Capture the value of the macro 'nil', hoping int is an appropriate type.
+static const int nil_(nil);
+// Now forget the macro.
+#undef nil
+// Finally, reintroduce 'nil' as a properly-scoped alias for the previously-
+// defined const 'nil_'. Make it static since otherwise it produces duplicate-
+// symbol link errors later.
+static const int& nil(nil_);
+#endif
+
 #include <string>
-#include <map>
+#include <boost/shared_ptr.hpp>
 #include <boost/function.hpp>
 #include <boost/bind.hpp>
 #include <boost/iterator/transform_iterator.hpp>
+#include <boost/utility/enable_if.hpp>
+#include <boost/function_types/is_nonmember_callable_builtin.hpp>
+#include <boost/function_types/parameter_types.hpp>
+#include <boost/function_types/function_arity.hpp>
+#include <boost/type_traits/remove_cv.hpp>
+#include <boost/type_traits/remove_reference.hpp>
+#include <boost/fusion/include/push_back.hpp>
+#include <boost/fusion/include/cons.hpp>
+#include <boost/fusion/include/invoke.hpp>
+#include <boost/mpl/begin.hpp>
+#include <boost/mpl/end.hpp>
+#include <boost/mpl/next.hpp>
+#include <boost/mpl/deref.hpp>
 #include <typeinfo>
 #include "llevents.h"
+#include "llsdutil.h"
 
 class LLSD;
 
@@ -54,12 +92,18 @@ public:
     LLEventDispatcher(const std::string& desc, const std::string& key);
     virtual ~LLEventDispatcher();
 
-    /// Accept any C++ callable, typically a boost::bind() expression
+    /// @name Register functions accepting(const LLSD&)
+    //@{
+
+    /// Accept any C++ callable with the right signature, typically a
+    /// boost::bind() expression
     typedef boost::function<void(const LLSD&)> Callable;
 
     /**
-     * Register a @a callable by @a name. The optional @a required parameter
-     * is used to validate the structure of each incoming event (see
+     * Register a @a callable by @a name. The passed @a callable accepts a
+     * single LLSD value and uses it in any way desired, e.g. extract
+     * parameters and call some other function. The optional @a required
+     * parameter is used to validate the structure of each incoming event (see
      * llsd_matches()).
      */
     void add(const std::string& name,
@@ -68,9 +112,23 @@ public:
              const LLSD& required=LLSD());
 
     /**
+     * The case of a free function (or static method) accepting(const LLSD&)
+     * could also be intercepted by the arbitrary-args overload below. Ensure
+     * that it's directed to the Callable overload above instead.
+     */
+    void add(const std::string& name,
+             const std::string& desc,
+             void (*f)(const LLSD&),
+             const LLSD& required=LLSD())
+    {
+        add(name, desc, Callable(f), required);
+    }
+
+    /**
      * Special case: a subclass of this class can pass an unbound member
-     * function pointer without explicitly specifying the
-     * <tt>boost::bind()</tt> expression.
+     * function pointer (of an LLEventDispatcher subclass) without explicitly
+     * specifying the <tt>boost::bind()</tt> expression. The passed @a method
+     * accepts a single LLSD value, presumably containing other parameters.
      */
     template <class CLASS>
     void add(const std::string& name,
@@ -81,7 +139,8 @@ public:
         addMethod<CLASS>(name, desc, method, required);
     }
 
-    /// Overload for both const and non-const methods
+    /// Overload for both const and non-const methods. The passed @a method
+    /// accepts a single LLSD value, presumably containing other parameters.
     template <class CLASS>
     void add(const std::string& name,
              const std::string& desc,
@@ -91,15 +150,106 @@ public:
         addMethod<CLASS>(name, desc, method, required);
     }
 
-    /// Convenience: for LLEventDispatcher, not every callable needs a
-    /// documentation string.
-    template <typename CALLABLE>
-    void add(const std::string& name,
-             CALLABLE callable,
-             const LLSD& required=LLSD())
-    {
-        add(name, "", callable, required);
-    }
+    //@}
+
+    /// @name Register functions with arbitrary param lists
+    //@{
+
+    /**
+     * Register a free function with arbitrary parameters. (This also works
+     * for static class methods.)
+     *
+     * @note This supports functions with up to about 6 parameters -- after
+     * that you start getting dismaying compile errors in which
+     * boost::fusion::joint_view is mentioned a surprising number of times.
+     *
+     * When calling this name, pass an LLSD::Array. Each entry in turn will be
+     * converted to the corresponding parameter type using LLSDParam.
+     */
+    template<typename Function>
+    typename boost::enable_if< boost::function_types::is_nonmember_callable_builtin<Function>
+                               >::type add(const std::string& name,
+                                           const std::string& desc,
+                                           Function f);
+
+    /**
+     * Register a nonstatic class method with arbitrary parameters.
+     *
+     * @note This supports functions with up to about 6 parameters -- after
+     * that you start getting dismaying compile errors in which
+     * boost::fusion::joint_view is mentioned a surprising number of times.
+     *
+     * To cover cases such as a method on an LLSingleton we don't yet want to
+     * instantiate, instead of directly storing an instance pointer, accept a
+     * nullary callable returning a pointer/reference to the desired class
+     * instance. If you already have an instance in hand,
+     * boost::lambda::var(instance) or boost::lambda::constant(instance_ptr)
+     * produce suitable callables.
+     *
+     * When calling this name, pass an LLSD::Array. Each entry in turn will be
+     * converted to the corresponding parameter type using LLSDParam.
+     */
+    template<typename Method, typename InstanceGetter>
+    typename boost::enable_if< boost::function_types::is_member_function_pointer<Method>
+                               >::type add(const std::string& name,
+                                           const std::string& desc,
+                                           Method f,
+                                           const InstanceGetter& getter);
+
+    /**
+     * Register a free function with arbitrary parameters. (This also works
+     * for static class methods.)
+     *
+     * @note This supports functions with up to about 6 parameters -- after
+     * that you start getting dismaying compile errors in which
+     * boost::fusion::joint_view is mentioned a surprising number of times.
+     *
+     * Pass an LLSD::Array of parameter names, and optionally another
+     * LLSD::Array of default parameter values, a la LLSDArgsMapper.
+     *
+     * When calling this name, pass an LLSD::Map. We will internally generate
+     * an LLSD::Array using LLSDArgsMapper and then convert each entry in turn
+     * to the corresponding parameter type using LLSDParam.
+     */
+    template<typename Function>
+    typename boost::enable_if< boost::function_types::is_nonmember_callable_builtin<Function>
+                               >::type add(const std::string& name,
+                                           const std::string& desc,
+                                           Function f,
+                                           const LLSD& params,
+                                           const LLSD& defaults=LLSD());
+
+    /**
+     * Register a nonstatic class method with arbitrary parameters.
+     *
+     * @note This supports functions with up to about 6 parameters -- after
+     * that you start getting dismaying compile errors in which
+     * boost::fusion::joint_view is mentioned a surprising number of times.
+     *
+     * To cover cases such as a method on an LLSingleton we don't yet want to
+     * instantiate, instead of directly storing an instance pointer, accept a
+     * nullary callable returning a pointer/reference to the desired class
+     * instance. If you already have an instance in hand,
+     * boost::lambda::var(instance) or boost::lambda::constant(instance_ptr)
+     * produce suitable callables.
+     *
+     * Pass an LLSD::Array of parameter names, and optionally another
+     * LLSD::Array of default parameter values, a la LLSDArgsMapper.
+     *
+     * When calling this name, pass an LLSD::Map. We will internally generate
+     * an LLSD::Array using LLSDArgsMapper and then convert each entry in turn
+     * to the corresponding parameter type using LLSDParam.
+     */
+    template<typename Method, typename InstanceGetter>
+    typename boost::enable_if< boost::function_types::is_member_function_pointer<Method>
+                               >::type add(const std::string& name,
+                                           const std::string& desc,
+                                           Method f,
+                                           const InstanceGetter& getter,
+                                           const LLSD& params,
+                                           const LLSD& defaults=LLSD());
+
+    //@}    
 
     /// Unregister a callable
     bool remove(const std::string& name);
@@ -109,12 +259,25 @@ public:
     /// the @a required prototype specified at add() time, die with LL_ERRS.
     void operator()(const std::string& name, const LLSD& event) const;
 
+    /// Call a registered callable with an explicitly-specified name and
+    /// return <tt>true</tt>. If no such callable exists, return
+    /// <tt>false</tt>. If the @a event fails to match the @a required
+    /// prototype specified at add() time, die with LL_ERRS.
+    bool try_call(const std::string& name, const LLSD& event) const;
+
     /// Extract the @a key value from the incoming @a event, and call the
     /// callable whose name is specified by that map @a key. If no such
     /// callable exists, die with LL_ERRS. If the @a event fails to match the
     /// @a required prototype specified at add() time, die with LL_ERRS.
     void operator()(const LLSD& event) const;
 
+    /// Extract the @a key value from the incoming @a event, call the callable
+    /// whose name is specified by that map @a key and return <tt>true</tt>.
+    /// If no such callable exists, return <tt>false</tt>. If the @a event
+    /// fails to match the @a required prototype specified at add() time, die
+    /// with LL_ERRS.
+    bool try_call(const LLSD& event) const;
+
     /// @name Iterate over defined names
     //@{
     typedef std::pair<std::string, std::string> NameDesc;
@@ -122,16 +285,22 @@ public:
 private:
     struct DispatchEntry
     {
-        DispatchEntry(const Callable& func, const std::string& desc, const LLSD& required):
-            mFunc(func),
-            mDesc(desc),
-            mRequired(required)
-        {}
-        Callable mFunc;
+        DispatchEntry(const std::string& desc);
+        virtual ~DispatchEntry() {} // suppress MSVC warning, sigh
+
         std::string mDesc;
-        LLSD mRequired;
+
+        virtual void call(const std::string& desc, const LLSD& event) const = 0;
+        virtual LLSD addMetadata(LLSD) const = 0;
     };
-    typedef std::map<std::string, DispatchEntry> DispatchMap;
+    // Tried using boost::ptr_map<std::string, DispatchEntry>, but ptr_map<>
+    // wants its value type to be "clonable," even just to dereference an
+    // iterator. I don't want to clone entries -- if I have to copy an entry
+    // around, I want it to continue pointing to the same DispatchEntry
+    // subclass object. However, I definitely want DispatchMap to destroy
+    // DispatchEntry if no references are outstanding at the time an entry is
+    // removed. This looks like a job for boost::shared_ptr.
+    typedef std::map<std::string, boost::shared_ptr<DispatchEntry> > DispatchMap;
 
 public:
     /// We want the flexibility to redefine what data we store per name,
@@ -149,10 +318,6 @@ public:
     }
     //@}
 
-    /// Fetch the Callable for the specified name. If no such name was
-    /// registered, return an empty() Callable.
-    Callable get(const std::string& name) const;
-
     /// Get information about a specific Callable
     LLSD getMetadata(const std::string& name) const;
 
@@ -175,18 +340,184 @@ private:
         }
     }
     void addFail(const std::string& name, const std::string& classname) const;
-    /// try to dispatch, return @c true if success
-    bool attemptCall(const std::string& name, const LLSD& event) const;
 
     std::string mDesc, mKey;
     DispatchMap mDispatch;
 
     static NameDesc makeNameDesc(const DispatchMap::value_type& item)
     {
-        return NameDesc(item.first, item.second.mDesc);
+        return NameDesc(item.first, item.second->mDesc);
+    }
+
+    struct LLSDDispatchEntry;
+    struct ParamsDispatchEntry;
+    struct ArrayParamsDispatchEntry;
+    struct MapParamsDispatchEntry;
+
+    // Step 2 of parameter analysis. Instantiating invoker<some_function_type>
+    // implicitly sets its From and To parameters to the (compile time) begin
+    // and end iterators over that function's parameter types.
+    template< typename Function
+              , class From = typename boost::mpl::begin< boost::function_types::parameter_types<Function> >::type
+              , class To   = typename boost::mpl::end< boost::function_types::parameter_types<Function> >::type
+              >
+    struct invoker;
+
+    // deliver LLSD arguments one at a time
+    typedef boost::function<LLSD()> args_source;
+    // obtain args from an args_source to build param list and call target
+    // function
+    typedef boost::function<void(const args_source&)> invoker_function;
+
+    template <typename Function>
+    invoker_function make_invoker(Function f);
+    template <typename Method, typename InstanceGetter>
+    invoker_function make_invoker(Method f, const InstanceGetter& getter);
+    void addArrayParamsDispatchEntry(const std::string& name,
+                                     const std::string& desc,
+                                     const invoker_function& invoker,
+                                     LLSD::Integer arity);
+    void addMapParamsDispatchEntry(const std::string& name,
+                                   const std::string& desc,
+                                   const invoker_function& invoker,
+                                   const LLSD& params,
+                                   const LLSD& defaults);
+};
+
+/*****************************************************************************
+*   LLEventDispatcher template implementation details
+*****************************************************************************/
+// Step 3 of parameter analysis, the recursive case.
+template<typename Function, class From, class To>
+struct LLEventDispatcher::invoker
+{
+    template<typename T>
+    struct remove_cv_ref
+        : boost::remove_cv< typename boost::remove_reference<T>::type >
+    { };
+
+    // apply() accepts an arbitrary boost::fusion sequence as args. It
+    // examines the next parameter type in the parameter-types sequence
+    // bounded by From and To, obtains the next LLSD object from the passed
+    // args_source and constructs an LLSDParam of appropriate type to try
+    // to convert the value. It then recurs with the next parameter-types
+    // iterator, passing the args sequence thus far.
+    template<typename Args>
+    static inline
+    void apply(Function func, const args_source& argsrc, Args const & args)
+    {
+        typedef typename boost::mpl::deref<From>::type arg_type;
+        typedef typename boost::mpl::next<From>::type next_iter_type;
+        typedef typename remove_cv_ref<arg_type>::type plain_arg_type;
+
+        invoker<Function, next_iter_type, To>::apply
+        ( func, argsrc, boost::fusion::push_back(args, LLSDParam<plain_arg_type>(argsrc())));
+    }
+
+    // Special treatment for instance (first) parameter of a non-static member
+    // function. Accept the instance-getter callable, calling that to produce
+    // the first args value. Since we know we're at the top of the recursion
+    // chain, we need not also require a partial args sequence from our caller.
+    template <typename InstanceGetter>
+    static inline
+    void method_apply(Function func, const args_source& argsrc, const InstanceGetter& getter)
+    {
+        typedef typename boost::mpl::next<From>::type next_iter_type;
+
+        // Instead of grabbing the first item from argsrc and making an
+        // LLSDParam of it, call getter() and pass that as the instance param.
+        invoker<Function, next_iter_type, To>::apply
+        ( func, argsrc, boost::fusion::push_back(boost::fusion::nil(), boost::ref(getter())));
+    }
+};
+
+// Step 4 of parameter analysis, the leaf case. When the general
+// invoker<Function, From, To> logic has advanced From until it matches To,
+// the compiler will pick this template specialization.
+template<typename Function, class To>
+struct LLEventDispatcher::invoker<Function,To,To>
+{
+    // the argument list is complete, now call the function
+    template<typename Args>
+    static inline
+    void apply(Function func, const args_source&, Args const & args)
+    {
+        boost::fusion::invoke(func, args);
     }
 };
 
+template<typename Function>
+typename boost::enable_if< boost::function_types::is_nonmember_callable_builtin<Function> >::type
+LLEventDispatcher::add(const std::string& name, const std::string& desc, Function f)
+{
+    // Construct an invoker_function, a callable accepting const args_source&.
+    // Add to DispatchMap an ArrayParamsDispatchEntry that will handle the
+    // caller's LLSD::Array.
+    addArrayParamsDispatchEntry(name, desc, make_invoker(f),
+                                boost::function_types::function_arity<Function>::value);
+}
+
+template<typename Method, typename InstanceGetter>
+typename boost::enable_if< boost::function_types::is_member_function_pointer<Method> >::type
+LLEventDispatcher::add(const std::string& name, const std::string& desc, Method f,
+                       const InstanceGetter& getter)
+{
+    // Subtract 1 from the compile-time arity because the getter takes care of
+    // the first parameter. We only need (arity - 1) additional arguments.
+    addArrayParamsDispatchEntry(name, desc, make_invoker(f, getter),
+                                boost::function_types::function_arity<Method>::value - 1);
+}
+
+template<typename Function>
+typename boost::enable_if< boost::function_types::is_nonmember_callable_builtin<Function> >::type
+LLEventDispatcher::add(const std::string& name, const std::string& desc, Function f,
+                       const LLSD& params, const LLSD& defaults)
+{
+    // See comments for previous is_nonmember_callable_builtin add().
+    addMapParamsDispatchEntry(name, desc, make_invoker(f), params, defaults);
+}
+
+template<typename Method, typename InstanceGetter>
+typename boost::enable_if< boost::function_types::is_member_function_pointer<Method> >::type
+LLEventDispatcher::add(const std::string& name, const std::string& desc, Method f,
+                       const InstanceGetter& getter,
+                       const LLSD& params, const LLSD& defaults)
+{
+    addMapParamsDispatchEntry(name, desc, make_invoker(f, getter), params, defaults);
+}
+
+template <typename Function>
+LLEventDispatcher::invoker_function
+LLEventDispatcher::make_invoker(Function f)
+{
+    // Step 1 of parameter analysis, the top of the recursion. Passing a
+    // suitable f (see add()'s enable_if condition) to this method causes it
+    // to infer the function type; specifying that function type to invoker<>
+    // causes it to fill in the begin/end MPL iterators over the function's
+    // list of parameter types.
+    // While normally invoker::apply() could infer its template type from the
+    // boost::fusion::nil parameter value, here we must be explicit since
+    // we're boost::bind()ing it rather than calling it directly.
+    return boost::bind(&invoker<Function>::template apply<boost::fusion::nil>,
+                       f,
+                       _1,
+                       boost::fusion::nil());
+}
+
+template <typename Method, typename InstanceGetter>
+LLEventDispatcher::invoker_function
+LLEventDispatcher::make_invoker(Method f, const InstanceGetter& getter)
+{
+    // Use invoker::method_apply() to treat the instance (first) arg specially.
+    return boost::bind(&invoker<Method>::template method_apply<InstanceGetter>,
+                       f,
+                       _1,
+                       getter);
+}
+
+/*****************************************************************************
+*   LLDispatchListener
+*****************************************************************************/
 /**
  * Bundle an LLEventPump and a listener with an LLEventDispatcher. A class
  * that contains (or derives from) LLDispatchListener need only specify the
diff --git a/indra/llcommon/llevents.cpp b/indra/llcommon/llevents.cpp
index 97e2bdeb57..ff03506e84 100644
--- a/indra/llcommon/llevents.cpp
+++ b/indra/llcommon/llevents.cpp
@@ -588,3 +588,16 @@ void LLReqID::stamp(LLSD& response) const
     }
     response["reqid"] = mReqid;
 }
+
+bool sendReply(const LLSD& reply, const LLSD& request, const std::string& replyKey)
+{
+    // Copy 'reply' to modify it.
+    LLSD newreply(reply);
+    // Get the ["reqid"] element from request
+    LLReqID reqID(request);
+    // and copy it to 'newreply'.
+    reqID.stamp(newreply);
+    // Send reply on LLEventPump named in request[replyKey]. Don't forget to
+    // send the modified 'newreply' instead of the original 'reply'.
+    return LLEventPumps::instance().obtain(request[replyKey]).post(newreply);
+}
diff --git a/indra/llcommon/llevents.h b/indra/llcommon/llevents.h
index 2491cf1371..65b0fef354 100644
--- a/indra/llcommon/llevents.h
+++ b/indra/llcommon/llevents.h
@@ -692,6 +692,20 @@ private:
 };
 
 /**
+ * Conventionally send a reply to a request event.
+ *
+ * @a reply is the LLSD reply event to send
+ * @a request is the corresponding LLSD request event
+ * @a replyKey is the key in the @a request event, conventionally ["reply"],
+ * whose value is the name of the LLEventPump on which to send the reply.
+ *
+ * Before sending the reply event, sendReply() copies the ["reqid"] item from
+ * the request to the reply.
+ */
+LL_COMMON_API bool sendReply(const LLSD& reply, const LLSD& request,
+                             const std::string& replyKey="reply");
+
+/**
  * Base class for LLListenerWrapper. See visit_and_connect() and llwrap(). We
  * provide virtual @c accept_xxx() methods, customization points allowing a
  * subclass access to certain data visible at LLEventPump::listen() time.
diff --git a/indra/llcommon/llinstancetracker.cpp b/indra/llcommon/llinstancetracker.cpp
index 89bc6cca39..f576204511 100644
--- a/indra/llcommon/llinstancetracker.cpp
+++ b/indra/llcommon/llinstancetracker.cpp
@@ -32,6 +32,17 @@
 // external library headers
 // other Linden headers
 
-// llinstancetracker.h is presently header-only. This file exists only because our CMake
-// test macro ADD_BUILD_TEST requires it.
-int dummy = 0;
+//static 
+void * & LLInstanceTrackerBase::getInstances(std::type_info const & info)
+{
+	static std::map<std::string, void *> instances;
+
+	std::string k = info.name();
+	if(instances.find(k) == instances.end())
+	{
+		instances[k] = NULL;
+	}
+
+	return instances[k];
+}
+
diff --git a/indra/llcommon/llinstancetracker.h b/indra/llcommon/llinstancetracker.h
index 4945461d62..b971b2f914 100644
--- a/indra/llcommon/llinstancetracker.h
+++ b/indra/llcommon/llinstancetracker.h
@@ -37,14 +37,21 @@
 #include <boost/iterator/transform_iterator.hpp>
 #include <boost/iterator/indirect_iterator.hpp>
 
+class LL_COMMON_API LLInstanceTrackerBase : public boost::noncopyable
+{
+	protected:
+		static void * & getInstances(std::type_info const & info);
+};
+
 /// This mix-in class adds support for tracking all instances of the specified class parameter T
 /// The (optional) key associates a value of type KEY with a given instance of T, for quick lookup
 /// If KEY is not provided, then instances are stored in a simple set
 /// @NOTE: see explicit specialization below for default KEY==T* case
 template<typename T, typename KEY = T*>
-class LLInstanceTracker : boost::noncopyable
+class LLInstanceTracker : public LLInstanceTrackerBase
 {
 	typedef typename std::map<KEY, T*> InstanceMap;
+	typedef LLInstanceTracker<T, KEY> MyT;
 	typedef boost::function<const KEY&(typename InstanceMap::value_type&)> KeyGetter;
 	typedef boost::function<T*(typename InstanceMap::value_type&)> InstancePtrGetter;
 public:
@@ -99,25 +106,26 @@ private:
 
     static InstanceMap& getMap_()
     {
-        if (! sInstances)
+		void * & instances = getInstances(typeid(MyT));
+        if (! instances)
         {
-            sInstances = new InstanceMap;
+            instances = new InstanceMap;
         }
-        return *sInstances;
+        return * static_cast<InstanceMap*>(instances);
     }
 
 private:
 
 	KEY mKey;
-	static InstanceMap* sInstances;
 };
 
 /// explicit specialization for default case where KEY is T*
 /// use a simple std::set<T*>
 template<typename T>
-class LLInstanceTracker<T, T*>
+class LLInstanceTracker<T, T*> : public LLInstanceTrackerBase
 {
 	typedef typename std::set<T*> InstanceSet;
+	typedef LLInstanceTracker<T, T*> MyT;
 public:
 	/// Dereferencing key_iter gives you a T* (since T* is the key)
 	typedef typename InstanceSet::iterator key_iter;
@@ -172,19 +180,17 @@ protected:
 
 	static InstanceSet& getSet_()
 	{
-		if (! sInstances)
+		void * & instances = getInstances(typeid(MyT));
+		if (! instances)
 		{
-			sInstances = new InstanceSet;
+			instances = new InstanceSet;
 		}
-		return *sInstances;
+		return * static_cast<InstanceSet *>(instances);
 	}
 
-	static InstanceSet* sInstances;
 	static S32 sIterationNestDepth;
 };
 
-template <typename T, typename KEY> typename LLInstanceTracker<T, KEY>::InstanceMap* LLInstanceTracker<T, KEY>::sInstances = NULL;
-template <typename T> typename LLInstanceTracker<T, T*>::InstanceSet* LLInstanceTracker<T, T*>::sInstances = NULL;
 template <typename T> S32 LLInstanceTracker<T, T*>::sIterationNestDepth = 0;
 
 #endif
diff --git a/indra/llcommon/llsdutil.cpp b/indra/llcommon/llsdutil.cpp
index f8f9ece058..803417d368 100644
--- a/indra/llcommon/llsdutil.cpp
+++ b/indra/llcommon/llsdutil.cpp
@@ -41,6 +41,7 @@
 
 #include "llsdserialize.h"
 #include "stringize.h"
+#include "is_approx_equal_fraction.h"
 
 #include <map>
 #include <set>
@@ -571,7 +572,7 @@ std::string llsd_matches(const LLSD& prototype, const LLSD& data, const std::str
     return match_types(prototype.type(), TypeVector(), data.type(), pfx);
 }
 
-bool llsd_equals(const LLSD& lhs, const LLSD& rhs)
+bool llsd_equals(const LLSD& lhs, const LLSD& rhs, unsigned bits)
 {
     // We're comparing strict equality of LLSD representation rather than
     // performing any conversions. So if the types aren't equal, the LLSD
@@ -588,6 +589,20 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs)
         // Both are TypeUndefined. There's nothing more to know.
         return true;
 
+    case LLSD::TypeReal:
+        // This is where the 'bits' argument comes in handy. If passed
+        // explicitly, it means to use is_approx_equal_fraction() to compare.
+        if (bits >= 0)
+        {
+            return is_approx_equal_fraction(lhs.asReal(), rhs.asReal(), bits);
+        }
+        // Otherwise we compare bit representations, and the usual caveats
+        // about comparing floating-point numbers apply. Omitting 'bits' when
+        // comparing Real values is only useful when we expect identical bit
+        // representation for a given Real value, e.g. for integer-valued
+        // Reals.
+        return (lhs.asReal() == rhs.asReal());
+
 #define COMPARE_SCALAR(type)                                    \
     case LLSD::Type##type:                                      \
         /* LLSD::URI has operator!=() but not operator==() */   \
@@ -596,10 +611,6 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs)
 
     COMPARE_SCALAR(Boolean);
     COMPARE_SCALAR(Integer);
-    // The usual caveats about comparing floating-point numbers apply. This is
-    // only useful when we expect identical bit representation for a given
-    // Real value, e.g. for integer-valued Reals.
-    COMPARE_SCALAR(Real);
     COMPARE_SCALAR(String);
     COMPARE_SCALAR(UUID);
     COMPARE_SCALAR(Date);
@@ -617,7 +628,7 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs)
         for ( ; lai != laend && rai != raend; ++lai, ++rai)
         {
             // If any one array element is unequal, the arrays are unequal.
-            if (! llsd_equals(*lai, *rai))
+            if (! llsd_equals(*lai, *rai, bits))
                 return false;
         }
         // Here we've reached the end of one or the other array. They're equal
@@ -644,7 +655,7 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs)
             if (rhskeys.erase(lmi->first) != 1)
                 return false;
             // Both maps have the current key. Compare values.
-            if (! llsd_equals(lmi->second, rhs[lmi->first]))
+            if (! llsd_equals(lmi->second, rhs[lmi->first], bits))
                 return false;
         }
         // We've now established that all the lhs keys have equal values in
@@ -657,7 +668,7 @@ bool llsd_equals(const LLSD& lhs, const LLSD& rhs)
         // We expect that every possible type() value is specifically handled
         // above. Failing to extend this switch to support a new LLSD type is
         // an error that must be brought to the coder's attention.
-        LL_ERRS("llsd_equals") << "llsd_equals(" << lhs << ", " << rhs << "): "
+        LL_ERRS("llsd_equals") << "llsd_equals(" << lhs << ", " << rhs << ", " << bits << "): "
             "unknown type " << lhs.type() << LL_ENDL;
         return false;               // pacify the compiler
     }
diff --git a/indra/llcommon/llsdutil.h b/indra/llcommon/llsdutil.h
index bb8c0690b1..65c7297cbf 100644
--- a/indra/llcommon/llsdutil.h
+++ b/indra/llcommon/llsdutil.h
@@ -123,8 +123,10 @@ LL_COMMON_API BOOL compare_llsd_with_template(
  */
 LL_COMMON_API std::string llsd_matches(const LLSD& prototype, const LLSD& data, const std::string& pfx="");
 
-/// Deep equality
-LL_COMMON_API bool llsd_equals(const LLSD& lhs, const LLSD& rhs);
+/// Deep equality. If you want to compare LLSD::Real values for approximate
+/// equality rather than bitwise equality, pass @a bits as for
+/// is_approx_equal_fraction().
+LL_COMMON_API bool llsd_equals(const LLSD& lhs, const LLSD& rhs, unsigned bits=-1);
 
 // Simple function to copy data out of input & output iterators if
 // there is no need for casting.
@@ -138,4 +140,283 @@ template<typename Input> LLSD llsd_copy_array(Input iter, Input end)
 	return dest;
 }
 
+/*****************************************************************************
+*   LLSDArray
+*****************************************************************************/
+/**
+ * Construct an LLSD::Array inline, with implicit conversion to LLSD. Usage:
+ *
+ * @code
+ * void somefunc(const LLSD&);
+ * ...
+ * somefunc(LLSDArray("text")(17)(3.14));
+ * @endcode
+ *
+ * For completeness, LLSDArray() with no args constructs an empty array, so
+ * <tt>LLSDArray()("text")(17)(3.14)</tt> produces an array equivalent to the
+ * above. But for most purposes, LLSD() is already equivalent to an empty
+ * array, and if you explicitly want an empty isArray(), there's
+ * LLSD::emptyArray(). However, supporting a no-args LLSDArray() constructor
+ * follows the principle of least astonishment.
+ */
+class LLSDArray
+{
+public:
+    LLSDArray():
+        _data(LLSD::emptyArray())
+    {}
+
+    /**
+     * Need an explicit copy constructor. Consider the following:
+     *
+     * @code
+     * LLSD array_of_arrays(LLSDArray(LLSDArray(17)(34))
+     *                               (LLSDArray("x")("y")));
+     * @endcode
+     *
+     * The coder intends to construct [[17, 34], ["x", "y"]].
+     *
+     * With the compiler's implicit copy constructor, s/he gets instead
+     * [17, 34, ["x", "y"]].
+     *
+     * The expression LLSDArray(17)(34) constructs an LLSDArray with those two
+     * values. The reader assumes it should be converted to LLSD, as we always
+     * want with LLSDArray, before passing it to the @em outer LLSDArray
+     * constructor! This copy constructor makes that happen.
+     */
+    LLSDArray(const LLSDArray& inner):
+        _data(LLSD::emptyArray())
+    {
+        _data.append(inner);
+    }
+
+    LLSDArray(const LLSD& value):
+        _data(LLSD::emptyArray())
+    {
+        _data.append(value);
+    }
+
+    LLSDArray& operator()(const LLSD& value)
+    {
+        _data.append(value);
+        return *this;
+    }
+
+    operator LLSD() const { return _data; }
+    LLSD get() const { return _data; }
+
+private:
+    LLSD _data;
+};
+
+/*****************************************************************************
+*   LLSDMap
+*****************************************************************************/
+/**
+ * Construct an LLSD::Map inline, with implicit conversion to LLSD. Usage:
+ *
+ * @code
+ * void somefunc(const LLSD&);
+ * ...
+ * somefunc(LLSDMap("alpha", "abc")("number", 17)("pi", 3.14));
+ * @endcode
+ *
+ * For completeness, LLSDMap() with no args constructs an empty map, so
+ * <tt>LLSDMap()("alpha", "abc")("number", 17)("pi", 3.14)</tt> produces a map
+ * equivalent to the above. But for most purposes, LLSD() is already
+ * equivalent to an empty map, and if you explicitly want an empty isMap(),
+ * there's LLSD::emptyMap(). However, supporting a no-args LLSDMap()
+ * constructor follows the principle of least astonishment.
+ */
+class LLSDMap
+{
+public:
+    LLSDMap():
+        _data(LLSD::emptyMap())
+    {}
+    LLSDMap(const LLSD::String& key, const LLSD& value):
+        _data(LLSD::emptyMap())
+    {
+        _data[key] = value;
+    }
+
+    LLSDMap& operator()(const LLSD::String& key, const LLSD& value)
+    {
+        _data[key] = value;
+        return *this;
+    }
+
+    operator LLSD() const { return _data; }
+    LLSD get() const { return _data; }
+
+private:
+    LLSD _data;
+};
+
+/*****************************************************************************
+*   LLSDParam
+*****************************************************************************/
+/**
+ * LLSDParam is a customization point for passing LLSD values to function
+ * parameters of more or less arbitrary type. LLSD provides a small set of
+ * native conversions; but if a generic algorithm explicitly constructs an
+ * LLSDParam object in the function's argument list, a consumer can provide
+ * LLSDParam specializations to support more different parameter types than
+ * LLSD's native conversions.
+ *
+ * Usage:
+ *
+ * @code
+ * void somefunc(const paramtype&);
+ * ...
+ * somefunc(..., LLSDParam<paramtype>(someLLSD), ...);
+ * @endcode
+ */
+template <typename T>
+class LLSDParam
+{
+public:
+    /**
+     * Default implementation converts to T on construction, saves converted
+     * value for later retrieval
+     */
+    LLSDParam(const LLSD& value):
+        _value(value)
+    {}
+
+    operator T() const { return _value; }
+
+private:
+    T _value;
+};
+
+/**
+ * Turns out that several target types could accept an LLSD param using any of
+ * a few different conversions, e.g. LLUUID's constructor can accept LLUUID or
+ * std::string. Therefore, the compiler can't decide which LLSD conversion
+ * operator to choose, even though to us it seems obvious. But that's okay, we
+ * can specialize LLSDParam for such target types, explicitly specifying the
+ * desired conversion -- that's part of what LLSDParam is all about. Turns out
+ * we have to do that enough to make it worthwhile generalizing. Use a macro
+ * because I need to specify one of the asReal, etc., explicit conversion
+ * methods as well as a type. If I'm overlooking a clever way to implement
+ * that using a template instead, feel free to reimplement.
+ */
+#define LLSDParam_for(T, AS)                    \
+template <>                                     \
+class LLSDParam<T>                              \
+{                                               \
+public:                                         \
+    LLSDParam(const LLSD& value):               \
+        _value(value.AS())                      \
+    {}                                          \
+                                                \
+    operator T() const { return _value; }       \
+                                                \
+private:                                        \
+    T _value;                                   \
+}
+
+LLSDParam_for(float,        asReal);
+LLSDParam_for(LLUUID,       asUUID);
+LLSDParam_for(LLDate,       asDate);
+LLSDParam_for(LLURI,        asURI);
+LLSDParam_for(LLSD::Binary, asBinary);
+
+/**
+ * LLSDParam<const char*> is an example of the kind of conversion you can
+ * support with LLSDParam beyond native LLSD conversions. Normally you can't
+ * pass an LLSD object to a function accepting const char* -- but you can
+ * safely pass an LLSDParam<const char*>(yourLLSD).
+ */
+template <>
+class LLSDParam<const char*>
+{
+private:
+    // The difference here is that we store a std::string rather than a const
+    // char*. It's important that the LLSDParam object own the std::string.
+    std::string _value;
+    // We don't bother storing the incoming LLSD object, but we do have to
+    // distinguish whether _value is an empty string because the LLSD object
+    // contains an empty string or because it's isUndefined().
+    bool _undefined;
+
+public:
+    LLSDParam(const LLSD& value):
+        _value(value),
+        _undefined(value.isUndefined())
+    {}
+
+    // The const char* we retrieve is for storage owned by our _value member.
+    // That's how we guarantee that the const char* is valid for the lifetime
+    // of this LLSDParam object. Constructing your LLSDParam in the argument
+    // list should ensure that the LLSDParam object will persist for the
+    // duration of the function call.
+    operator const char*() const
+    {
+        if (_undefined)
+        {
+            // By default, an isUndefined() LLSD object's asString() method
+            // will produce an empty string. But for a function accepting
+            // const char*, it's often important to be able to pass NULL, and
+            // isUndefined() seems like the best way. If you want to pass an
+            // empty string, you can still pass LLSD(""). Without this special
+            // case, though, no LLSD value could pass NULL.
+            return NULL;
+        }
+        return _value.c_str();
+    }
+};
+
+namespace llsd
+{
+
+/*****************************************************************************
+*   BOOST_FOREACH() helpers for LLSD
+*****************************************************************************/
+/// Usage: BOOST_FOREACH(LLSD item, inArray(someLLSDarray)) { ... }
+class inArray
+{
+public:
+    inArray(const LLSD& array):
+        _array(array)
+    {}
+
+    typedef LLSD::array_const_iterator const_iterator;
+    typedef LLSD::array_iterator iterator;
+
+    iterator begin() { return _array.beginArray(); }
+    iterator end()   { return _array.endArray(); }
+    const_iterator begin() const { return _array.beginArray(); }
+    const_iterator end()   const { return _array.endArray(); }
+
+private:
+    LLSD _array;
+};
+
+/// MapEntry is what you get from dereferencing an LLSD::map_[const_]iterator.
+typedef std::map<LLSD::String, LLSD>::value_type MapEntry;
+
+/// Usage: BOOST_FOREACH([const] MapEntry& e, inMap(someLLSDmap)) { ... }
+class inMap
+{
+public:
+    inMap(const LLSD& map):
+        _map(map)
+    {}
+
+    typedef LLSD::map_const_iterator const_iterator;
+    typedef LLSD::map_iterator iterator;
+
+    iterator begin() { return _map.beginMap(); }
+    iterator end()   { return _map.endMap(); }
+    const_iterator begin() const { return _map.beginMap(); }
+    const_iterator end()   const { return _map.endMap(); }
+
+private:
+    LLSD _map;
+};
+
+} // namespace llsd
+
 #endif // LL_LLSDUTIL_H
diff --git a/indra/llcommon/llversionviewer.h b/indra/llcommon/llversionviewer.h
index 488ec5b239..ae2bd0d78b 100644
--- a/indra/llcommon/llversionviewer.h
+++ b/indra/llcommon/llversionviewer.h
@@ -29,7 +29,7 @@
 
 const S32 LL_VERSION_MAJOR = 2;
 const S32 LL_VERSION_MINOR = 6;
-const S32 LL_VERSION_PATCH = 3;
+const S32 LL_VERSION_PATCH = 4;
 const S32 LL_VERSION_BUILD = 0;
 
 const char * const LL_CHANNEL = "Second Life Developer";
diff --git a/indra/llcommon/tests/lleventdispatcher_test.cpp b/indra/llcommon/tests/lleventdispatcher_test.cpp
new file mode 100644
index 0000000000..263c9b171f
--- /dev/null
+++ b/indra/llcommon/tests/lleventdispatcher_test.cpp
@@ -0,0 +1,1324 @@
+/**
+ * @file   lleventdispatcher_test.cpp
+ * @author Nat Goodspeed
+ * @date   2011-01-20
+ * @brief  Test for lleventdispatcher.
+ * 
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Copyright (c) 2011, Linden Research, Inc.
+ * $/LicenseInfo$
+ */
+
+// Precompiled header
+#include "linden_common.h"
+// associated header
+#include "lleventdispatcher.h"
+// STL headers
+// std headers
+// external library headers
+// other Linden headers
+#include "../test/lltut.h"
+#include "llsd.h"
+#include "llsdutil.h"
+#include "stringize.h"
+#include "tests/wrapllerrs.h"
+
+#include <map>
+#include <string>
+#include <stdexcept>
+
+#include <boost/bind.hpp>
+#include <boost/function.hpp>
+#include <boost/range.hpp>
+#include <boost/foreach.hpp>
+#define foreach BOOST_FOREACH
+
+#include <boost/lambda/lambda.hpp>
+
+#include <iostream>
+#include <iomanip>
+
+using boost::lambda::constant;
+using boost::lambda::constant_ref;
+using boost::lambda::var;
+
+using namespace llsd;
+
+/*****************************************************************************
+*   Output control
+*****************************************************************************/
+#ifdef DEBUG_ON
+using std::cout;
+#else
+static std::ostringstream cout;
+#endif
+
+/*****************************************************************************
+*   Example data, functions, classes
+*****************************************************************************/
+// We don't need a whole lot of different arbitrary-params methods, just (no |
+// (const LLSD&) | arbitrary) args (function | static method | non-static
+// method), where 'arbitrary' is (every LLSD datatype + (const char*)).
+// But we need to register each one under different names for the different
+// registration styles. Don't forget LLEventDispatcher subclass methods(const
+// LLSD&).
+
+// However, the number of target parameter conversions we want to try exceeds
+// boost::fusion::invoke()'s supported parameter-list size. Break out two
+// different lists.
+#define NPARAMSa bool b, int i, float f, double d, const char* cp
+#define NPARAMSb const std::string& s, const LLUUID& uuid, const LLDate& date, \
+                 const LLURI& uri, const std::vector<U8>& bin
+#define NARGSa   b, i, f, d, cp
+#define NARGSb   s, uuid, date, uri, bin
+
+// For some registration methods we need methods on a subclass of
+// LLEventDispatcher. To simplify things, we'll use this Dispatcher subclass
+// for all our testing, including testing its own methods.
+class Dispatcher: public LLEventDispatcher
+{
+public:
+    Dispatcher(const std::string& name, const std::string& key):
+        LLEventDispatcher(name, key)
+    {}
+
+    // sensing member, mutable because we want to know when we've reached our
+    // const method too
+    mutable LLSD llsd;
+
+    void method1(const LLSD& obj) { llsd = obj; }
+    void cmethod1(const LLSD& obj) const { llsd = obj; }
+};
+
+// sensing vars, captured in a struct to make it convenient to clear them
+struct Vars
+{
+    LLSD llsd;
+    bool b;
+    int i;
+    float f;
+    double d;
+    // Capture param passed as char*. But merely storing a char* received from
+    // our caller, possibly the .c_str() from a concatenation expression,
+    // would be Bad: the pointer will be invalidated long before we can query
+    // it. We could allocate a new chunk of memory, copy the string data and
+    // point to that instead -- but hey, guess what, we already have a class
+    // that does that!
+    std::string cp;
+    std::string s;
+    LLUUID uuid;
+    LLDate date;
+    LLURI uri;
+    std::vector<U8> bin;
+
+    Vars():
+        // Only need to initialize the POD types, the rest should take care of
+        // default-constructing themselves.
+        b(false),
+        i(0),
+        f(0),
+        d(0)
+    {}
+
+    // Detect any non-default values for convenient testing
+    LLSD inspect() const
+    {
+        LLSD result;
+
+        if (llsd.isDefined())
+            result["llsd"] = llsd;
+        if (b)
+            result["b"] = b;
+        if (i)
+            result["i"] = i;
+        if (f)
+            result["f"] = f;
+        if (d)
+            result["d"] = d;
+        if (! cp.empty())
+            result["cp"] = cp;
+        if (! s.empty())
+            result["s"] = s;
+        if (uuid != LLUUID())
+            result["uuid"] = uuid;
+        if (date != LLDate())
+            result["date"] = date;
+        if (uri != LLURI())
+            result["uri"] = uri;
+        if (! bin.empty())
+            result["bin"] = bin;
+
+        return result;
+    }
+
+    /*------------- no-args (non-const, const, static) methods -------------*/
+    void method0()
+    {
+        cout << "method0()\n";
+        i = 17;
+    }
+
+    void cmethod0() const
+    {
+        cout << 'c';
+        const_cast<Vars*>(this)->method0();
+    }
+
+    static void smethod0();
+
+    /*------------ Callable (non-const, const, static) methods -------------*/
+    void method1(const LLSD& obj)
+    {
+        cout << "method1(" << obj << ")\n";
+        llsd = obj;
+    }
+
+    void cmethod1(const LLSD& obj) const
+    {
+        cout << 'c';
+        const_cast<Vars*>(this)->method1(obj);
+    }
+
+    static void smethod1(const LLSD& obj);
+
+    /*-------- Arbitrary-params (non-const, const, static) methods ---------*/
+    void methodna(NPARAMSa)
+    {
+        // Because our const char* param cp might be NULL, and because we
+        // intend to capture the value in a std::string, have to distinguish
+        // between the NULL value and any non-NULL value. Use a convention
+        // easy for a human reader: enclose any non-NULL value in single
+        // quotes, reserving the unquoted string "NULL" to represent a NULL ptr.
+        std::string vcp;
+        if (cp == NULL)
+            vcp = "NULL";
+        else
+            vcp = std::string("'") + cp + "'";
+
+        cout << "methodna(" << b
+             << ", " << i
+             << ", " << f
+             << ", " << d
+             << ", " << vcp
+             << ")\n";
+
+        this->b = b;
+        this->i = i;
+        this->f = f;
+        this->d = d;
+        this->cp = vcp;
+    }
+
+    void methodnb(NPARAMSb)
+    {
+        std::ostringstream vbin;
+        foreach(U8 byte, bin)
+        {
+            vbin << std::hex << std::setfill('0') << std::setw(2) << unsigned(byte);
+        }
+
+        cout << "methodnb(" << "'" << s << "'"
+             << ", " << uuid
+             << ", " << date
+             << ", '" << uri << "'"
+             << ", " << vbin.str()
+             << ")\n";
+
+        this->s = s;
+        this->uuid = uuid;
+        this->date = date;
+        this->uri = uri;
+        this->bin = bin;
+    }
+
+    void cmethodna(NPARAMSa) const
+    {
+        cout << 'c';
+        const_cast<Vars*>(this)->methodna(NARGSa);
+    }
+
+    void cmethodnb(NPARAMSb) const
+    {
+        cout << 'c';
+        const_cast<Vars*>(this)->methodnb(NARGSb);
+    }
+
+    static void smethodna(NPARAMSa);
+    static void smethodnb(NPARAMSb);
+};
+/*------- Global Vars instance for free functions and static methods -------*/
+static Vars g;
+
+/*------------ Static Vars method implementations reference 'g' ------------*/
+void Vars::smethod0()
+{
+    cout << "smethod0() -> ";
+    g.method0();
+}
+
+void Vars::smethod1(const LLSD& obj)
+{
+    cout << "smethod1(" << obj << ") -> ";
+    g.method1(obj);
+}
+
+void Vars::smethodna(NPARAMSa)
+{
+    cout << "smethodna(...) -> ";
+    g.methodna(NARGSa);
+}
+
+void Vars::smethodnb(NPARAMSb)
+{
+    cout << "smethodnb(...) -> ";
+    g.methodnb(NARGSb);
+}
+
+/*--------------------------- Reset global Vars ----------------------------*/
+void clear()
+{
+    g = Vars();
+}
+
+/*------------------- Free functions also reference 'g' --------------------*/
+void free0()
+{
+    cout << "free0() -> ";
+    g.method0();
+}
+
+void free1(const LLSD& obj)
+{
+    cout << "free1(" << obj << ") -> ";
+    g.method1(obj);
+}
+
+void freena(NPARAMSa)
+{
+    cout << "freena(...) -> ";
+    g.methodna(NARGSa);
+}
+
+void freenb(NPARAMSb)
+{
+    cout << "freenb(...) -> ";
+    g.methodnb(NARGSb);
+}
+
+/*****************************************************************************
+*   TUT
+*****************************************************************************/
+namespace tut
+{
+    struct lleventdispatcher_data
+    {
+        WrapLL_ERRS redirect;
+        Dispatcher work;
+        Vars v;
+        std::string name, desc;
+        // Capture our own copy of all registered functions' descriptions
+        typedef std::map<std::string, std::string> DescMap;
+        DescMap descs;
+        // Capture the Vars instance on which we expect each function to operate
+        typedef std::map<std::string, Vars*> VarsMap;
+        VarsMap funcvars;
+        // Required structure for Callables with requirements
+        LLSD required;
+        // Parameter names for freena(), freenb()
+        LLSD params;
+        // Full, partial defaults arrays for params for freena(), freenb()
+        LLSD dft_array_full, dft_array_partial;
+        // Start index of partial defaults arrays
+        const LLSD::Integer partial_offset;
+        // Full, partial defaults maps for params for freena(), freenb()
+        LLSD dft_map_full, dft_map_partial;
+        // Most of the above are indexed by "a" or "b". Useful to have an
+        // array containing those strings for iterating.
+        std::vector<LLSD::String> ab;
+
+        lleventdispatcher_data():
+            work("test dispatcher", "op"),
+            // map {d=double, array=[3 elements]}
+            required(LLSDMap("d", LLSD::Real(0))("array", LLSDArray(LLSD())(LLSD())(LLSD()))),
+            // first several params are required, last couple optional
+            partial_offset(3)
+        {
+            // This object is reconstructed for every test<n> method. But
+            // clear global variables every time too.
+            ::clear();
+
+            const char* abs[] = { "a", "b" };
+            ab.assign(boost::begin(abs), boost::end(abs));
+
+            // Registration cases:
+            // - (Callable | subclass const method | subclass non-const method |
+            //   non-subclass method) (with | without) required
+            // - (Free function | static method | non-static method), (no | arbitrary) params,
+            //   array style
+            // - (Free function | static method | non-static method), (no | arbitrary) params,
+            //   map style, (empty | partial | full) (array | map) defaults
+            // - Map-style errors:
+            //   - (scalar | map) param names
+            //   - defaults scalar
+            //   - defaults array longer than params array
+            //   - defaults map with plural unknown param names
+
+            // I hate to have to write things twice, because of having to keep
+            // them consistent. If we had variadic functions, addf() would be
+            // a variadic method, capturing the name and desc and passing them
+            // plus "everything else" to work.add(). If I could return a pair
+            // and use that pair as the first two args to work.add(), I'd do
+            // that. But the best I can do with present C++ is to set two
+            // instance variables as a side effect of addf(), and pass those
+            // variables to each work.add() call. :-P
+
+            /*------------------------- Callables --------------------------*/
+
+            // Arbitrary Callable with/out required params
+            addf("free1", "free1", &g);
+            work.add(name, desc, free1);
+            addf("free1_req", "free1", &g);
+            work.add(name, desc, free1, required);
+            // Subclass non-const method with/out required params
+            addf("Dmethod1", "method1", NULL);
+            work.add(name, desc, &Dispatcher::method1);
+            addf("Dmethod1_req", "method1", NULL);
+            work.add(name, desc, &Dispatcher::method1, required);
+            // Subclass const method with/out required params
+            addf("Dcmethod1", "cmethod1", NULL);
+            work.add(name, desc, &Dispatcher::cmethod1);
+            addf("Dcmethod1_req", "cmethod1", NULL);
+            work.add(name, desc, &Dispatcher::cmethod1, required);
+            // Non-subclass method with/out required params
+            addf("method1", "method1", &v);
+            work.add(name, desc, boost::bind(&Vars::method1, boost::ref(v), _1));
+            addf("method1_req", "method1", &v);
+            work.add(name, desc, boost::bind(&Vars::method1, boost::ref(v), _1), required);
+
+            /*--------------- Arbitrary params, array style ----------------*/
+
+            // (Free function | static method) with (no | arbitrary) params, array style
+            addf("free0_array", "free0", &g);
+            work.add(name, desc, free0);
+            addf("freena_array", "freena", &g);
+            work.add(name, desc, freena);
+            addf("freenb_array", "freenb", &g);
+            work.add(name, desc, freenb);
+            addf("smethod0_array", "smethod0", &g);
+            work.add(name, desc, &Vars::smethod0);
+            addf("smethodna_array", "smethodna", &g);
+            work.add(name, desc, &Vars::smethodna);
+            addf("smethodnb_array", "smethodnb", &g);
+            work.add(name, desc, &Vars::smethodnb);
+            // Non-static method with (no | arbitrary) params, array style
+            addf("method0_array", "method0", &v);
+            work.add(name, desc, &Vars::method0, boost::lambda::var(v));
+            addf("methodna_array", "methodna", &v);
+            work.add(name, desc, &Vars::methodna, boost::lambda::var(v));
+            addf("methodnb_array", "methodnb", &v);
+            work.add(name, desc, &Vars::methodnb, boost::lambda::var(v));
+
+            /*---------------- Arbitrary params, map style -----------------*/
+
+            // We lay out each params list as an array, also each array of
+            // default values we'll register. We'll zip these into
+            // (param=value) maps. Why not define them as maps and just
+            // extract the keys and values to arrays? Because that wouldn't
+            // give us the right params-list order.
+
+            // freena(), methodna(), cmethodna(), smethodna() all take same param list.
+            // Same for freenb() et al.
+            params = LLSDMap("a", LLSDArray("b")("i")("f")("d")("cp"))
+                            ("b", LLSDArray("s")("uuid")("date")("uri")("bin"));
+            cout << "params:\n" << params << "\nparams[\"a\"]:\n" << params["a"] << "\nparams[\"b\"]:\n" << params["b"] << std::endl;
+            // default LLSD::Binary value   
+            std::vector<U8> binary;
+            for (size_t ix = 0, h = 0xaa; ix < 6; ++ix, h += 0x11)
+            {
+                binary.push_back(h);
+            }
+            // Full defaults arrays. We actually don't care what the LLUUID or
+            // LLDate values are, as long as they're different from the
+            // LLUUID() and LLDate() default values so inspect() will report
+            // them.
+            dft_array_full = LLSDMap("a", LLSDArray(true)(17)(3.14)(123456.78)("classic"))
+                                    ("b", LLSDArray("string")
+                                                   (LLUUID::generateNewID())
+                                                   (LLDate::now())
+                                                   (LLURI("http://www.ietf.org/rfc/rfc3986.txt"))
+                                                   (binary));
+            cout << "dft_array_full:\n" << dft_array_full << std::endl;
+            // Partial defaults arrays.
+            foreach(LLSD::String a, ab)
+            {
+                LLSD::Integer partition(std::min(partial_offset, dft_array_full[a].size()));
+                dft_array_partial[a] =
+                    llsd_copy_array(dft_array_full[a].beginArray() + partition,
+                                    dft_array_full[a].endArray());
+            }
+            cout << "dft_array_partial:\n" << dft_array_partial << std::endl;
+
+            foreach(LLSD::String a, ab)
+            {
+                // Generate full defaults maps by zipping (params, dft_array_full).
+                dft_map_full[a] = zipmap(params[a], dft_array_full[a]);
+
+                // Generate partial defaults map by zipping alternate entries from
+                // (params, dft_array_full). Part of the point of using map-style
+                // defaults is to allow any subset of the target function's
+                // parameters to be optional, not just the rightmost.
+                for (LLSD::Integer ix = 0, ixend = params[a].size(); ix < ixend; ix += 2)
+                {
+                    dft_map_partial[a][params[a][ix].asString()] = dft_array_full[a][ix];
+                }
+            }
+            cout << "dft_map_full:\n" << dft_map_full << "\ndft_map_partial:\n" << dft_map_partial << '\n';
+
+            // (Free function | static method) with (no | arbitrary) params,
+            // map style, no (empty array) defaults
+            addf("free0_map", "free0", &g);
+            work.add(name, desc, free0, LLSD::emptyArray());
+            addf("smethod0_map", "smethod0", &g);
+            work.add(name, desc, &Vars::smethod0, LLSD::emptyArray());
+            addf("freena_map_allreq", "freena", &g);
+            work.add(name, desc, freena, params["a"]);
+            addf("freenb_map_allreq", "freenb", &g);
+            work.add(name, desc, freenb, params["b"]);
+            addf("smethodna_map_allreq", "smethodna", &g);
+            work.add(name, desc, &Vars::smethodna, params["a"]);
+            addf("smethodnb_map_allreq", "smethodnb", &g);
+            work.add(name, desc, &Vars::smethodnb, params["b"]);
+            // Non-static method with (no | arbitrary) params, map style, no
+            // (empty array) defaults
+            addf("method0_map", "method0", &v);
+            work.add(name, desc, &Vars::method0, var(v), LLSD::emptyArray());
+            addf("methodna_map_allreq", "methodna", &v);
+            work.add(name, desc, &Vars::methodna, var(v), params["a"]);
+            addf("methodnb_map_allreq", "methodnb", &v);
+            work.add(name, desc, &Vars::methodnb, var(v), params["b"]);
+
+            // Except for the "more (array | map) defaults than params" error
+            // cases, tested separately below, the (partial | full)(array |
+            // map) defaults cases don't apply to no-params functions/methods.
+            // So eliminate free0, smethod0, method0 from the cases below.
+
+            // (Free function | static method) with arbitrary params, map
+            // style, partial (array | map) defaults
+            addf("freena_map_leftreq", "freena", &g);
+            work.add(name, desc, freena, params["a"], dft_array_partial["a"]);
+            addf("freenb_map_leftreq", "freenb", &g);
+            work.add(name, desc, freenb, params["b"], dft_array_partial["b"]);
+            addf("smethodna_map_leftreq", "smethodna", &g);
+            work.add(name, desc, &Vars::smethodna, params["a"], dft_array_partial["a"]);
+            addf("smethodnb_map_leftreq", "smethodnb", &g);
+            work.add(name, desc, &Vars::smethodnb, params["b"], dft_array_partial["b"]);
+            addf("freena_map_skipreq", "freena", &g);
+            work.add(name, desc, freena, params["a"], dft_map_partial["a"]);
+            addf("freenb_map_skipreq", "freenb", &g);
+            work.add(name, desc, freenb, params["b"], dft_map_partial["b"]);
+            addf("smethodna_map_skipreq", "smethodna", &g);
+            work.add(name, desc, &Vars::smethodna, params["a"], dft_map_partial["a"]);
+            addf("smethodnb_map_skipreq", "smethodnb", &g);
+            work.add(name, desc, &Vars::smethodnb, params["b"], dft_map_partial["b"]);
+            // Non-static method with arbitrary params, map style, partial
+            // (array | map) defaults
+            addf("methodna_map_leftreq", "methodna", &v);
+            work.add(name, desc, &Vars::methodna, var(v), params["a"], dft_array_partial["a"]);
+            addf("methodnb_map_leftreq", "methodnb", &v);
+            work.add(name, desc, &Vars::methodnb, var(v), params["b"], dft_array_partial["b"]);
+            addf("methodna_map_skipreq", "methodna", &v);
+            work.add(name, desc, &Vars::methodna, var(v), params["a"], dft_map_partial["a"]);
+            addf("methodnb_map_skipreq", "methodnb", &v);
+            work.add(name, desc, &Vars::methodnb, var(v), params["b"], dft_map_partial["b"]);
+
+            // (Free function | static method) with arbitrary params, map
+            // style, full (array | map) defaults
+            addf("freena_map_adft", "freena", &g);
+            work.add(name, desc, freena, params["a"], dft_array_full["a"]);
+            addf("freenb_map_adft", "freenb", &g);
+            work.add(name, desc, freenb, params["b"], dft_array_full["b"]);
+            addf("smethodna_map_adft", "smethodna", &g);
+            work.add(name, desc, &Vars::smethodna, params["a"], dft_array_full["a"]);
+            addf("smethodnb_map_adft", "smethodnb", &g);
+            work.add(name, desc, &Vars::smethodnb, params["b"], dft_array_full["b"]);
+            addf("freena_map_mdft", "freena", &g);
+            work.add(name, desc, freena, params["a"], dft_map_full["a"]);
+            addf("freenb_map_mdft", "freenb", &g);
+            work.add(name, desc, freenb, params["b"], dft_map_full["b"]);
+            addf("smethodna_map_mdft", "smethodna", &g);
+            work.add(name, desc, &Vars::smethodna, params["a"], dft_map_full["a"]);
+            addf("smethodnb_map_mdft", "smethodnb", &g);
+            work.add(name, desc, &Vars::smethodnb, params["b"], dft_map_full["b"]);
+            // Non-static method with arbitrary params, map style, full
+            // (array | map) defaults
+            addf("methodna_map_adft", "methodna", &v);
+            work.add(name, desc, &Vars::methodna, var(v), params["a"], dft_array_full["a"]);
+            addf("methodnb_map_adft", "methodnb", &v);
+            work.add(name, desc, &Vars::methodnb, var(v), params["b"], dft_array_full["b"]);
+            addf("methodna_map_mdft", "methodna", &v);
+            work.add(name, desc, &Vars::methodna, var(v), params["a"], dft_map_full["a"]);
+            addf("methodnb_map_mdft", "methodnb", &v);
+            work.add(name, desc, &Vars::methodnb, var(v), params["b"], dft_map_full["b"]);
+
+            // All the above are expected to succeed, and are setup for the
+            // tests to follow. Registration error cases are exercised as
+            // tests rather than as test setup.
+        }
+
+        void addf(const std::string& n, const std::string& d, Vars* v)
+        {
+            // This method is to capture in our own DescMap the name and
+            // description of every registered function, for metadata query
+            // testing.
+            descs[n] = d;
+            // Also capture the Vars instance on which each function should operate.
+            funcvars[n] = v;
+            // See constructor for rationale for setting these instance vars.
+            this->name = n;
+            this->desc = d;
+        }
+
+        void verify_descs()
+        {
+            // Copy descs to a temp map of same type.
+            DescMap forgotten(descs.begin(), descs.end());
+            // LLEventDispatcher intentionally provides only const_iterator:
+            // since dereferencing that iterator generates values on the fly,
+            // it's meaningless to have a modifiable iterator. But since our
+            // 'work' object isn't const, by default BOOST_FOREACH() wants to
+            // use non-const iterators. Persuade it to use the const_iterator.
+            foreach(LLEventDispatcher::NameDesc nd, const_cast<const Dispatcher&>(work))
+            {
+                DescMap::iterator found = forgotten.find(nd.first);
+                ensure(STRINGIZE("LLEventDispatcher records function '" << nd.first
+                                 << "' we didn't enter"),
+                       found != forgotten.end());
+                ensure_equals(STRINGIZE("LLEventDispatcher desc '" << nd.second <<
+                                        "' doesn't match what we entered: '" << found->second << "'"),
+                              nd.second, found->second);
+                // found in our map the name from LLEventDispatcher, good, erase
+                // our map entry
+                forgotten.erase(found);
+            }
+            if (! forgotten.empty())
+            {
+                std::ostringstream out;
+                out << "LLEventDispatcher failed to report";
+                const char* delim = ": ";
+                foreach(const DescMap::value_type& fme, forgotten)
+                {
+                    out << delim << fme.first;
+                    delim = ", ";
+                }
+                ensure(out.str(), false);
+            }
+        }
+
+        Vars* varsfor(const std::string& name)
+        {
+            VarsMap::const_iterator found = funcvars.find(name);
+            ensure(STRINGIZE("No Vars* for " << name), found != funcvars.end());
+            ensure(STRINGIZE("NULL Vars* for " << name), found->second);
+            return found->second;
+        }
+
+        void ensure_has(const std::string& outer, const std::string& inner)
+        {
+            ensure(STRINGIZE("'" << outer << "' does not contain '" << inner << "'").c_str(),
+                   outer.find(inner) != std::string::npos);
+        }
+
+        void call_exc(const std::string& func, const LLSD& args, const std::string& exc_frag)
+        {
+            std::string threw;
+            try
+            {
+                work(func, args);
+            }
+            catch (const std::runtime_error& e)
+            {
+                cout << "*** " << e.what() << '\n';
+                threw = e.what();
+            }
+            ensure_has(threw, exc_frag);
+        }
+
+        LLSD getMetadata(const std::string& name)
+        {
+            LLSD meta(work.getMetadata(name));
+            ensure(STRINGIZE("No metadata for " << name), meta.isDefined());
+            return meta;
+        }
+
+        // From two related LLSD arrays, e.g. a param-names array and a values
+        // array, zip them together into an LLSD map.
+        LLSD zipmap(const LLSD& keys, const LLSD& values)
+        {
+            LLSD map;
+            for (LLSD::Integer i = 0, iend = keys.size(); i < iend; ++i)
+            {
+                // Have to select asString() since you can index an LLSD
+                // object with either String or Integer.
+                map[keys[i].asString()] = values[i];
+            }
+            return map;
+        }
+
+        // If I call this ensure_equals(), it blocks visibility of all other
+        // ensure_equals() overloads. Normally I could say 'using
+        // baseclass::ensure_equals;' and fix that, but I don't know what the
+        // base class is!
+        void ensure_llsd(const std::string& msg, const LLSD& actual, const LLSD& expected, U32 bits)
+        {
+            std::ostringstream out;
+            if (! msg.empty())
+            {
+                out << msg << ": ";
+            }
+            out << "expected " << expected << ", actual " << actual;
+            ensure(out.str(), llsd_equals(actual, expected, bits));
+        }
+
+        void ensure_llsd(const LLSD& actual, const LLSD& expected, U32 bits)
+        {
+            ensure_llsd("", actual, expected, bits);
+        }
+    };
+    typedef test_group<lleventdispatcher_data> lleventdispatcher_group;
+    typedef lleventdispatcher_group::object object;
+    lleventdispatcher_group lleventdispatchergrp("lleventdispatcher");
+
+    // Call cases:
+    // - (try_call | call) (explicit name | event key) (real | bogus) name
+    // - Callable with args that (do | do not) match required
+    // - (Free function | non-static method), no args, (array | map) style
+    // - (Free function | non-static method), arbitrary args,
+    //   (array style with (scalar | map) | map style with scalar)
+    // - (Free function | non-static method), arbitrary args, array style with
+    //   array (too short | too long | just right)
+    //   [trap LL_WARNS for too-long case?]
+    // - (Free function | non-static method), arbitrary args, map style with
+    //   (array | map) (all | too many | holes (with | without) defaults)
+    // - const char* param gets ("" | NULL)
+
+    // Query cases:
+    // - Iterate over all (with | without) remove()
+    // - getDispatchKey()
+    // - Callable style (with | without) required
+    // - (Free function | non-static method), array style, (no | arbitrary) params
+    // - (Free function | non-static method), map style, (no | arbitrary) params,
+    //   (empty | full | partial (array | map)) defaults
+
+    template<> template<>
+    void object::test<1>()
+    {
+        set_test_name("map-style registration with non-array params");
+        // Pass "param names" as scalar or as map
+        LLSD attempts(LLSDArray(17)(LLSDMap("pi", 3.14)("two", 2)));
+        foreach(LLSD ae, inArray(attempts))
+        {
+            std::string threw;
+            try
+            {
+                work.add("freena_err", "freena", freena, ae);
+            }
+            catch (const std::exception& e)
+            {
+                threw = e.what();
+            }
+            ensure_has(threw, "must be an array");
+        }
+    }
+
+    template<> template<>
+    void object::test<2>()
+    {
+        set_test_name("map-style registration with badly-formed defaults");
+        std::string threw;
+        try
+        {
+            work.add("freena_err", "freena", freena, LLSDArray("a")("b"), 17);
+        }
+        catch (const std::exception& e)
+        {
+            threw = e.what();
+        }
+        ensure_has(threw, "must be a map or an array");
+    }
+
+    template<> template<>
+    void object::test<3>()
+    {
+        set_test_name("map-style registration with too many array defaults");
+        std::string threw;
+        try
+        {
+            work.add("freena_err", "freena", freena,
+                     LLSDArray("a")("b"),
+                     LLSDArray(17)(0.9)("gack"));
+        }
+        catch (const std::exception& e)
+        {
+            threw = e.what();
+        }
+        ensure_has(threw, "shorter than");
+    }
+
+    template<> template<>
+    void object::test<4>()
+    {
+        set_test_name("map-style registration with too many map defaults");
+        std::string threw;
+        try
+        {
+            work.add("freena_err", "freena", freena,
+                     LLSDArray("a")("b"),
+                     LLSDMap("b", 17)("foo", 3.14)("bar", "sinister"));
+        }
+        catch (const std::exception& e)
+        {
+            threw = e.what();
+        }
+        ensure_has(threw, "nonexistent params");
+        ensure_has(threw, "foo");
+        ensure_has(threw, "bar");
+    }
+
+    template<> template<>
+    void object::test<5>()
+    {
+        set_test_name("query all");
+        verify_descs();
+    }
+
+    template<> template<>
+    void object::test<6>()
+    {
+        set_test_name("query all with remove()");
+        ensure("remove('bogus') returned true", ! work.remove("bogus"));
+        ensure("remove('real') returned false", work.remove("free1"));
+        // Of course, remove that from 'descs' too...
+        descs.erase("free1");
+        verify_descs();
+    }
+
+    template<> template<>
+    void object::test<7>()
+    {
+        set_test_name("getDispatchKey()");
+        ensure_equals(work.getDispatchKey(), "op");
+    }
+
+    template<> template<>
+    void object::test<8>()
+    {
+        set_test_name("query Callables with/out required params");
+        LLSD names(LLSDArray("free1")("Dmethod1")("Dcmethod1")("method1"));
+        foreach(LLSD nm, inArray(names))
+        {
+            LLSD metadata(getMetadata(nm));
+            ensure_equals("name mismatch", metadata["name"], nm);
+            ensure_equals(metadata["desc"].asString(), descs[nm]);
+            ensure("should not have required structure", metadata["required"].isUndefined());
+            ensure("should not have optional", metadata["optional"].isUndefined());
+
+            std::string name_req(nm.asString() + "_req");
+            metadata = getMetadata(name_req);
+            ensure_equals(metadata["name"].asString(), name_req);
+            ensure_equals(metadata["desc"].asString(), descs[name_req]);
+            ensure_equals("required mismatch", required, metadata["required"]);
+            ensure("should not have optional", metadata["optional"].isUndefined());
+        }
+    }
+
+    template<> template<>
+    void object::test<9>()
+    {
+        set_test_name("query array-style functions/methods");
+        // Associate each registered name with expected arity.
+        LLSD expected(LLSDArray
+                      (LLSDArray
+                       (0)(LLSDArray("free0_array")("smethod0_array")("method0_array")))
+                      (LLSDArray
+                       (5)(LLSDArray("freena_array")("smethodna_array")("methodna_array")))
+                      (LLSDArray
+                       (5)(LLSDArray("freenb_array")("smethodnb_array")("methodnb_array"))));
+        foreach(LLSD ae, inArray(expected))
+        {
+            LLSD::Integer arity(ae[0].asInteger());
+            LLSD names(ae[1]);
+            LLSD req(LLSD::emptyArray());
+            if (arity)
+                req[arity - 1] = LLSD();
+            foreach(LLSD nm, inArray(names))
+            {
+                LLSD metadata(getMetadata(nm));
+                ensure_equals("name mismatch", metadata["name"], nm);
+                ensure_equals(metadata["desc"].asString(), descs[nm]);
+                ensure_equals(STRINGIZE("mismatched required for " << nm.asString()),
+                              metadata["required"], req);
+                ensure("should not have optional", metadata["optional"].isUndefined());
+            }
+        }
+    }
+
+    template<> template<>
+    void object::test<10>()
+    {
+        set_test_name("query map-style no-params functions/methods");
+        // - (Free function | non-static method), map style, no params (ergo
+        //   no defaults)
+        LLSD names(LLSDArray("free0_map")("smethod0_map")("method0_map"));
+        foreach(LLSD nm, inArray(names))
+        {
+            LLSD metadata(getMetadata(nm));
+            ensure_equals("name mismatch", metadata["name"], nm);
+            ensure_equals(metadata["desc"].asString(), descs[nm]);
+            ensure("should not have required",
+                   (metadata["required"].isUndefined() || metadata["required"].size() == 0));
+            ensure("should not have optional", metadata["optional"].isUndefined());
+        }
+    }
+
+    template<> template<>
+    void object::test<11>()
+    {
+        set_test_name("query map-style arbitrary-params functions/methods: "
+                      "full array defaults vs. full map defaults");
+        // With functions registered with no defaults ("_allreq" suffixes),
+        // there is of course no difference between array defaults and map
+        // defaults. (We don't even bother registering with LLSD::emptyArray()
+        // vs. LLSD::emptyMap().) With functions registered with all defaults,
+        // there should (!) be no difference beween array defaults and map
+        // defaults. Verify, so we can ignore the distinction for all other
+        // tests.
+        LLSD equivalences(LLSDArray
+                          (LLSDArray("freena_map_adft")("freena_map_mdft"))
+                          (LLSDArray("freenb_map_adft")("freenb_map_mdft"))
+                          (LLSDArray("smethodna_map_adft")("smethodna_map_mdft"))
+                          (LLSDArray("smethodnb_map_adft")("smethodnb_map_mdft"))
+                          (LLSDArray("methodna_map_adft")("methodna_map_mdft"))
+                          (LLSDArray("methodnb_map_adft")("methodnb_map_mdft")));
+        foreach(LLSD eq, inArray(equivalences))
+        {
+            LLSD adft(eq[0]);
+            LLSD mdft(eq[1]);
+            // We can't just compare the results of the two getMetadata()
+            // calls, because they contain ["name"], which are different. So
+            // capture them, verify that each ["name"] is as expected, then
+            // remove for comparing the rest.
+            LLSD ameta(getMetadata(adft));
+            LLSD mmeta(getMetadata(mdft));
+            ensure_equals("adft name", adft, ameta["name"]);
+            ensure_equals("mdft name", mdft, mmeta["name"]);
+            ameta.erase("name");
+            mmeta.erase("name");
+            ensure_equals(STRINGIZE("metadata for " << adft.asString()
+                                    << " vs. " << mdft.asString()),
+                          ameta, mmeta);
+        }
+    }
+
+    template<> template<>
+    void object::test<12>()
+    {
+        set_test_name("query map-style arbitrary-params functions/methods");
+        // - (Free function | non-static method), map style, arbitrary params,
+        //   (empty | full | partial (array | map)) defaults
+
+        // Generate maps containing all parameter names for cases in which all
+        // params are required. Also maps containing left requirements for
+        // partial defaults arrays. Also defaults maps from defaults arrays.
+        LLSD allreq, leftreq, rightdft;
+        foreach(LLSD::String a, ab)
+        {
+            // The map in which all params are required uses params[a] as
+            // keys, with all isUndefined() as values. We can accomplish that
+            // by passing zipmap() an empty values array.
+            allreq[a] = zipmap(params[a], LLSD::emptyArray());
+            // Same for leftreq, save that we use the subset of the params not
+            // supplied by dft_array_partial[a].
+            LLSD::Integer partition(params[a].size() - dft_array_partial[a].size());
+            leftreq[a] = zipmap(llsd_copy_array(params[a].beginArray(),
+                                                params[a].beginArray() + partition),
+                                LLSD::emptyArray());
+            // Generate map pairing dft_array_partial[a] values with their
+            // param names.
+            rightdft[a] = zipmap(llsd_copy_array(params[a].beginArray() + partition,
+                                                 params[a].endArray()),
+                                 dft_array_partial[a]);
+        }
+        cout << "allreq:\n" << allreq << "\nleftreq:\n" << leftreq << "\nrightdft:\n" << rightdft << std::endl;
+
+        // Generate maps containing parameter names not provided by the
+        // dft_map_partial maps.
+        LLSD skipreq(allreq);
+        foreach(LLSD::String a, ab)
+        {
+            foreach(const MapEntry& me, inMap(dft_map_partial[a]))
+            {
+                skipreq[a].erase(me.first);
+            }
+        }
+        cout << "skipreq:\n" << skipreq << std::endl;
+
+        LLSD groups(LLSDArray       // array of groups
+
+                    (LLSDArray      // group
+                     (LLSDArray("freena_map_allreq")("smethodna_map_allreq")("methodna_map_allreq"))
+                     (LLSDArray(allreq["a"])(LLSD()))) // required, optional
+
+                    (LLSDArray        // group
+                     (LLSDArray("freenb_map_allreq")("smethodnb_map_allreq")("methodnb_map_allreq"))
+                     (LLSDArray(allreq["b"])(LLSD()))) // required, optional
+
+                    (LLSDArray        // group
+                     (LLSDArray("freena_map_leftreq")("smethodna_map_leftreq")("methodna_map_leftreq"))
+                     (LLSDArray(leftreq["a"])(rightdft["a"]))) // required, optional
+
+                    (LLSDArray        // group
+                     (LLSDArray("freenb_map_leftreq")("smethodnb_map_leftreq")("methodnb_map_leftreq"))
+                     (LLSDArray(leftreq["b"])(rightdft["b"]))) // required, optional
+
+                    (LLSDArray        // group
+                     (LLSDArray("freena_map_skipreq")("smethodna_map_skipreq")("methodna_map_skipreq"))
+                     (LLSDArray(skipreq["a"])(dft_map_partial["a"]))) // required, optional
+
+                    (LLSDArray        // group
+                     (LLSDArray("freenb_map_skipreq")("smethodnb_map_skipreq")("methodnb_map_skipreq"))
+                     (LLSDArray(skipreq["b"])(dft_map_partial["b"]))) // required, optional
+
+                    // We only need mention the full-map-defaults ("_mdft" suffix)
+                    // registrations, having established their equivalence with the
+                    // full-array-defaults ("_adft" suffix) registrations in another test.
+                    (LLSDArray        // group
+                     (LLSDArray("freena_map_mdft")("smethodna_map_mdft")("methodna_map_mdft"))
+                     (LLSDArray(LLSD::emptyMap())(dft_map_full["a"]))) // required, optional
+
+                    (LLSDArray        // group
+                     (LLSDArray("freenb_map_mdft")("smethodnb_map_mdft")("methodnb_map_mdft"))
+                     (LLSDArray(LLSD::emptyMap())(dft_map_full["b"])))); // required, optional
+
+        foreach(LLSD grp, inArray(groups))
+        {
+            // Internal structure of each group in 'groups':
+            LLSD names(grp[0]);
+            LLSD required(grp[1][0]);
+            LLSD optional(grp[1][1]);
+            cout << "For " << names << ",\n" << "required:\n" << required << "\noptional:\n" << optional << std::endl;
+
+            // Loop through 'names'
+            foreach(LLSD nm, inArray(names))
+            {
+                LLSD metadata(getMetadata(nm));
+                ensure_equals("name mismatch", metadata["name"], nm);
+                ensure_equals(nm.asString(), metadata["desc"].asString(), descs[nm]);
+                ensure_equals(STRINGIZE(nm << " required mismatch"),
+                              metadata["required"], required);
+                ensure_equals(STRINGIZE(nm << " optional mismatch"),
+                              metadata["optional"], optional);
+            }
+        }
+    }
+
+    template<> template<>
+    void object::test<13>()
+    {
+        set_test_name("try_call()");
+        ensure("try_call(bogus name, LLSD()) returned true", ! work.try_call("freek", LLSD()));
+        ensure("try_call(bogus name) returned true", ! work.try_call(LLSDMap("op", "freek")));
+        ensure("try_call(real name, LLSD()) returned false", work.try_call("free0_array", LLSD()));
+        ensure("try_call(real name) returned false", work.try_call(LLSDMap("op", "free0_map")));
+    }
+
+    template<> template<>
+    void object::test<14>()
+    {
+        set_test_name("call with bad name");
+        call_exc("freek", LLSD(), "not found");
+        // We don't have a comparable helper function for the one-arg
+        // operator() method, and it's not worth building one just for this
+        // case. Write it out.
+        std::string threw;
+        try
+        {
+            work(LLSDMap("op", "freek"));
+        }
+        catch (const std::runtime_error& e)
+        {
+            cout << "*** " << e.what() << "\n";
+            threw = e.what();
+        }
+        ensure_has(threw, "bad");
+        ensure_has(threw, "op");
+        ensure_has(threw, "freek");
+    }
+
+    template<> template<>
+    void object::test<15>()
+    {
+        set_test_name("call with event key");
+        // We don't need a separate test for operator()(string, LLSD) with
+        // valid name, because all the rest of the tests exercise that case.
+        // The one we don't exercise elsewhere is operator()(LLSD) with valid
+        // name, so here it is.
+        work(LLSDMap("op", "free0_map"));
+        ensure_equals(g.i, 17);
+    }
+
+    // Cannot be defined inside function body... remind me again why we use C++...  :-P
+    struct CallablesTriple
+    {
+        std::string name, name_req;
+        LLSD& llsd;
+    };
+
+    template<> template<>
+    void object::test<16>()
+    {
+        set_test_name("call Callables");
+        CallablesTriple tests[] =
+        {
+            { "free1",     "free1_req",     g.llsd },
+            { "Dmethod1",  "Dmethod1_req",  work.llsd },
+            { "Dcmethod1", "Dcmethod1_req", work.llsd },
+            { "method1",   "method1_req",   v.llsd }
+        };
+        // Arbitrary LLSD value that we should be able to pass to Callables
+        // without 'required', but should not be able to pass to Callables
+        // with 'required'.
+        LLSD answer(42);
+        // LLSD value matching 'required' according to llsd_matches() rules.
+        LLSD matching(LLSDMap("d", 3.14)("array", LLSDArray("answer")(true)(answer)));
+        // Okay, walk through 'tests'.
+        foreach(const CallablesTriple& tr, tests)
+        {
+            // Should be able to pass 'answer' to Callables registered
+            // without 'required'.
+            work(tr.name, answer);
+            ensure_equals("answer mismatch", tr.llsd, answer);
+            // Should NOT be able to pass 'answer' to Callables registered
+            // with 'required'.
+            call_exc(tr.name_req, answer, "bad request");
+            // But SHOULD be able to pass 'matching' to Callables registered
+            // with 'required'.
+            work(tr.name_req, matching);
+            ensure_equals("matching mismatch", tr.llsd, matching);
+        }
+    }
+
+    template<> template<>
+    void object::test<17>()
+    {
+        set_test_name("passing wrong args to (map | array)-style registrations");
+
+        // Pass scalar/map to array-style functions, scalar/array to map-style
+        // functions. As that validation happens well before we engage the
+        // argument magic, it seems pointless to repeat this with every
+        // variation: (free function | non-static method), (no | arbitrary)
+        // args. We should only need to engage it for one map-style
+        // registration and one array-style registration.
+        std::string array_exc("needs an args array");
+        call_exc("free0_array", 17, array_exc);
+        call_exc("free0_array", LLSDMap("pi", 3.14), array_exc);
+
+        std::string map_exc("needs a map");
+        call_exc("free0_map", 17, map_exc);
+        // Passing an array to a map-style function works now! No longer an
+        // error case!
+//      call_exc("free0_map", LLSDArray("a")("b"), map_exc);
+    }
+
+    template<> template<>
+    void object::test<18>()
+    {
+        set_test_name("call no-args functions");
+        LLSD names(LLSDArray
+                   ("free0_array")("free0_map")
+                   ("smethod0_array")("smethod0_map")
+                   ("method0_array")("method0_map"));
+        foreach(LLSD name, inArray(names))
+        {
+            // Look up the Vars instance for this function.
+            Vars* vars(varsfor(name));
+            // Both the global and stack Vars instances are automatically
+            // cleared at the start of each test<n> method. But since we're
+            // calling these things several different times in the same
+            // test<n> method, manually reset the Vars between each.
+            *vars = Vars();
+            ensure_equals(vars->i, 0);
+            // call function with empty array (or LLSD(), should be equivalent)
+            work(name, LLSD());
+            ensure_equals(vars->i, 17);
+        }
+    }
+
+    // Break out this data because we use it in a couple different tests.
+    LLSD array_funcs(LLSDArray
+                     (LLSDMap("a", "freena_array")   ("b", "freenb_array"))
+                     (LLSDMap("a", "smethodna_array")("b", "smethodnb_array"))
+                     (LLSDMap("a", "methodna_array") ("b", "methodnb_array")));
+
+    template<> template<>
+    void object::test<19>()
+    {
+        set_test_name("call array-style functions with too-short arrays");
+        // Could have two different too-short arrays, one for *na and one for
+        // *nb, but since they both take 5 params...
+        LLSD tooshort(LLSDArray("this")("array")("too")("short"));
+        foreach(const LLSD& funcsab, inArray(array_funcs))
+        {
+            foreach(const llsd::MapEntry& e, inMap(funcsab))
+            {
+                call_exc(e.second, tooshort, "requires more arguments");
+            }
+        }
+    }
+
+    template<> template<>
+    void object::test<20>()
+    {
+        set_test_name("call array-style functions with (just right | too long) arrays");
+        std::vector<U8> binary;
+        for (size_t h(0x01), i(0); i < 5; h+= 0x22, ++i)
+        {
+            binary.push_back(h);
+        }
+        LLSD args(LLSDMap("a", LLSDArray(true)(17)(3.14)(123.456)("char*"))
+                         ("b", LLSDArray("string")
+                                        (LLUUID("01234567-89ab-cdef-0123-456789abcdef"))
+                                        (LLDate("2011-02-03T15:07:00Z"))
+                                        (LLURI("http://secondlife.com"))
+                                        (binary)));
+        LLSD argsplus(args);
+        argsplus["a"].append("bogus");
+        argsplus["b"].append("bogus");
+        LLSD expect;
+        foreach(LLSD::String a, ab)
+        {
+            expect[a] = zipmap(params[a], args[a]);
+        }
+        // Adjust expect["a"]["cp"] for special Vars::cp treatment.
+        expect["a"]["cp"] = std::string("'") + expect["a"]["cp"].asString() + "'";
+        cout << "expect: " << expect << '\n';
+
+        // Use substantially the same logic for args and argsplus
+        LLSD argsarrays(LLSDArray(args)(argsplus));
+        // So i==0 selects 'args', i==1 selects argsplus
+        for (LLSD::Integer i(0), iend(argsarrays.size()); i < iend; ++i)
+        {
+            foreach(const LLSD& funcsab, inArray(array_funcs))
+            {
+                foreach(LLSD::String a, ab)
+                {
+                    // Reset the Vars instance before each call
+                    Vars* vars(varsfor(funcsab[a]));
+                    *vars = Vars();
+                    work(funcsab[a], argsarrays[i][a]);
+                    ensure_llsd(STRINGIZE(funcsab[a].asString() <<
+                                          ": expect[\"" << a << "\"] mismatch"),
+                                vars->inspect(), expect[a], 7); // 7 bits ~= 2 decimal digits
+
+                    // TODO: in the i==1 or argsplus case, intercept LL_WARNS
+                    // output? Even without that, using argsplus verifies that
+                    // passing too many args isn't fatal; it works -- but
+                    // would be nice to notice the warning too.
+                }
+            }
+        }
+    }
+
+    template<> template<>
+    void object::test<21>()
+    {
+        set_test_name("verify that passing LLSD() to const char* sends NULL");
+
+        ensure_equals("Vars::cp init", v.cp, "");
+        work("methodna_map_mdft", LLSDMap("cp", LLSD()));
+        ensure_equals("passing LLSD()", v.cp, "NULL");
+        work("methodna_map_mdft", LLSDMap("cp", ""));
+        ensure_equals("passing \"\"", v.cp, "''");
+        work("methodna_map_mdft", LLSDMap("cp", "non-NULL"));
+        ensure_equals("passing \"non-NULL\"", v.cp, "'non-NULL'");
+    }
+
+    template<> template<>
+    void object::test<22>()
+    {
+        set_test_name("call map-style functions with (full | oversized) (arrays | maps)");
+        const char binary[] = "\x99\x88\x77\x66\x55";
+        LLSD array_full(LLSDMap
+                        ("a", LLSDArray(false)(255)(98.6)(1024.5)("pointer"))
+                        ("b", LLSDArray("object")(LLUUID::generateNewID())(LLDate::now())(LLURI("http://wiki.lindenlab.com/wiki"))(LLSD::Binary(boost::begin(binary), boost::end(binary)))));
+        LLSD array_overfull(array_full);
+        foreach(LLSD::String a, ab)
+        {
+            array_overfull[a].append("bogus");
+        }
+        cout << "array_full: " << array_full << "\narray_overfull: " << array_overfull << std::endl;
+        // We rather hope that LLDate::now() will generate a timestamp
+        // distinct from the one it generated in the constructor, moments ago.
+        ensure_not_equals("Timestamps too close",
+                          array_full["b"][2].asDate(), dft_array_full["b"][2].asDate());
+        // We /insist/ that LLUUID::generateNewID() do so.
+        ensure_not_equals("UUID collision",
+                          array_full["b"][1].asUUID(), dft_array_full["b"][1].asUUID());
+        LLSD map_full, map_overfull;
+        foreach(LLSD::String a, ab)
+        {
+            map_full[a] = zipmap(params[a], array_full[a]);
+            map_overfull[a] = map_full[a];
+            map_overfull[a]["extra"] = "ignore";
+        }
+        cout << "map_full: " << map_full << "\nmap_overfull: " << map_overfull << std::endl;
+        LLSD expect(map_full);
+        // Twiddle the const char* param.
+        expect["a"]["cp"] = std::string("'") + expect["a"]["cp"].asString() + "'";
+        // Another adjustment. For each data type, we're trying to distinguish
+        // three values: the Vars member's initial value (member wasn't
+        // stored; control never reached the set function), the registered
+        // default param value from dft_array_full, and the array_full value
+        // in this test. But bool can only distinguish two values. In this
+        // case, we want to differentiate the local array_full value from the
+        // dft_array_full value, so we use 'false'. However, that means
+        // Vars::inspect() doesn't differentiate it from the initial value,
+        // so won't bother returning it. Predict that behavior to match the
+        // LLSD values.
+        expect["a"].erase("b");
+        cout << "expect: " << expect << std::endl;
+        // For this test, calling functions registered with different sets of
+        // parameter defaults should make NO DIFFERENCE WHATSOEVER. Every call
+        // should pass all params.
+        LLSD names(LLSDMap
+                   ("a", LLSDArray
+                         ("freena_map_allreq") ("smethodna_map_allreq") ("methodna_map_allreq")
+                         ("freena_map_leftreq")("smethodna_map_leftreq")("methodna_map_leftreq")
+                         ("freena_map_skipreq")("smethodna_map_skipreq")("methodna_map_skipreq")
+                         ("freena_map_adft")   ("smethodna_map_adft")   ("methodna_map_adft")
+                         ("freena_map_mdft")   ("smethodna_map_mdft")   ("methodna_map_mdft"))
+                   ("b", LLSDArray
+                         ("freenb_map_allreq") ("smethodnb_map_allreq") ("methodnb_map_allreq")
+                         ("freenb_map_leftreq")("smethodnb_map_leftreq")("methodnb_map_leftreq")
+                         ("freenb_map_skipreq")("smethodnb_map_skipreq")("methodnb_map_skipreq")
+                         ("freenb_map_adft")   ("smethodnb_map_adft")   ("methodnb_map_adft")
+                         ("freenb_map_mdft")   ("smethodnb_map_mdft")   ("methodnb_map_mdft")));
+        // Treat (full | overfull) (array | map) the same.
+        LLSD argssets(LLSDArray(array_full)(array_overfull)(map_full)(map_overfull));
+        foreach(const LLSD& args, inArray(argssets))
+        {
+            foreach(LLSD::String a, ab)
+            {
+                foreach(LLSD::String name, inArray(names[a]))
+                {
+                    // Reset the Vars instance
+                    Vars* vars(varsfor(name));
+                    *vars = Vars();
+                    work(name, args[a]);
+                    ensure_llsd(STRINGIZE(name << ": expect[\"" << a << "\"] mismatch"),
+                                vars->inspect(), expect[a], 7); // 7 bits, 2 decimal digits
+                    // intercept LL_WARNS for the two overfull cases?
+                }
+            }
+        }
+    }
+} // namespace tut
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index 6ea63809f8..c86c89fa9b 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -57,9 +57,12 @@
 BOOL gDebugSession = FALSE;
 BOOL gDebugGL = FALSE;
 BOOL gClothRipple = FALSE;
-BOOL gNoRender = FALSE;
+BOOL gHeadlessClient = FALSE;
 BOOL gGLActive = FALSE;
 
+static const std::string HEADLESS_VENDOR_STRING("Linden Lab");
+static const std::string HEADLESS_RENDERER_STRING("Headless");
+static const std::string HEADLESS_VERSION_STRING("1.0");
 
 std::ofstream gFailLog;
 
@@ -538,9 +541,19 @@ void LLGLManager::setToDebugGPU()
 
 void LLGLManager::getGLInfo(LLSD& info)
 {
-	info["GLInfo"]["GLVendor"] = std::string((const char *)glGetString(GL_VENDOR));
-	info["GLInfo"]["GLRenderer"] = std::string((const char *)glGetString(GL_RENDERER));
-	info["GLInfo"]["GLVersion"] = std::string((const char *)glGetString(GL_VERSION));
+	if (gHeadlessClient)
+	{
+		info["GLInfo"]["GLVendor"] = HEADLESS_VENDOR_STRING;
+		info["GLInfo"]["GLRenderer"] = HEADLESS_RENDERER_STRING;
+		info["GLInfo"]["GLVersion"] = HEADLESS_VERSION_STRING;
+		return;
+	}
+	else
+	{
+		info["GLInfo"]["GLVendor"] = std::string((const char *)glGetString(GL_VENDOR));
+		info["GLInfo"]["GLRenderer"] = std::string((const char *)glGetString(GL_RENDERER));
+		info["GLInfo"]["GLVersion"] = std::string((const char *)glGetString(GL_VERSION));
+	}
 
 #if !LL_MESA_HEADLESS
 	std::string all_exts = ll_safe_string((const char *)gGLHExts.mSysExts);
@@ -556,14 +569,22 @@ void LLGLManager::getGLInfo(LLSD& info)
 std::string LLGLManager::getGLInfoString()
 {
 	std::string info_str;
-	std::string all_exts, line;
 
-	info_str += std::string("GL_VENDOR      ") + ll_safe_string((const char *)glGetString(GL_VENDOR)) + std::string("\n");
-	info_str += std::string("GL_RENDERER    ") + ll_safe_string((const char *)glGetString(GL_RENDERER)) + std::string("\n");
-	info_str += std::string("GL_VERSION     ") + ll_safe_string((const char *)glGetString(GL_VERSION)) + std::string("\n");
+	if (gHeadlessClient)
+	{
+		info_str += std::string("GL_VENDOR      ") + HEADLESS_VENDOR_STRING + std::string("\n");
+		info_str += std::string("GL_RENDERER    ") + HEADLESS_RENDERER_STRING + std::string("\n");
+		info_str += std::string("GL_VERSION     ") + HEADLESS_VERSION_STRING + std::string("\n");
+	}
+	else
+	{
+		info_str += std::string("GL_VENDOR      ") + ll_safe_string((const char *)glGetString(GL_VENDOR)) + std::string("\n");
+		info_str += std::string("GL_RENDERER    ") + ll_safe_string((const char *)glGetString(GL_RENDERER)) + std::string("\n");
+		info_str += std::string("GL_VERSION     ") + ll_safe_string((const char *)glGetString(GL_VERSION)) + std::string("\n");
+	}
 
 #if !LL_MESA_HEADLESS 
-	all_exts = (const char *)gGLHExts.mSysExts;
+	std::string all_exts= ll_safe_string(((const char *)gGLHExts.mSysExts));
 	LLStringUtil::replaceChar(all_exts, ' ', '\n');
 	info_str += std::string("GL_EXTENSIONS:\n") + all_exts + std::string("\n");
 #endif
@@ -573,15 +594,21 @@ std::string LLGLManager::getGLInfoString()
 
 void LLGLManager::printGLInfoString()
 {
-	std::string info_str;
-	std::string all_exts, line;
-	
-	LL_INFOS("RenderInit") << "GL_VENDOR:     " << ((const char *)glGetString(GL_VENDOR)) << LL_ENDL;
-	LL_INFOS("RenderInit") << "GL_RENDERER:   " << ((const char *)glGetString(GL_RENDERER)) << LL_ENDL;
-	LL_INFOS("RenderInit") << "GL_VERSION:    " << ((const char *)glGetString(GL_VERSION)) << LL_ENDL;
+	if (gHeadlessClient)
+	{
+		LL_INFOS("RenderInit") << "GL_VENDOR:     " << HEADLESS_VENDOR_STRING << LL_ENDL;
+		LL_INFOS("RenderInit") << "GL_RENDERER:   " << HEADLESS_RENDERER_STRING << LL_ENDL;
+		LL_INFOS("RenderInit") << "GL_VERSION:    " << HEADLESS_VERSION_STRING << LL_ENDL;
+	}
+	else
+	{
+		LL_INFOS("RenderInit") << "GL_VENDOR:     " << ((const char *)glGetString(GL_VENDOR)) << LL_ENDL;
+		LL_INFOS("RenderInit") << "GL_RENDERER:   " << ((const char *)glGetString(GL_RENDERER)) << LL_ENDL;
+		LL_INFOS("RenderInit") << "GL_VERSION:    " << ((const char *)glGetString(GL_VERSION)) << LL_ENDL;
+	}
 
 #if !LL_MESA_HEADLESS
-	all_exts = std::string(gGLHExts.mSysExts);
+	std::string all_exts= ll_safe_string(((const char *)gGLHExts.mSysExts));
 	LLStringUtil::replaceChar(all_exts, ' ', '\n');
 	LL_DEBUGS("RenderInit") << "GL_EXTENSIONS:\n" << all_exts << LL_ENDL;
 #endif
@@ -590,7 +617,14 @@ void LLGLManager::printGLInfoString()
 std::string LLGLManager::getRawGLString()
 {
 	std::string gl_string;
-	gl_string = ll_safe_string((char*)glGetString(GL_VENDOR)) + " " + ll_safe_string((char*)glGetString(GL_RENDERER));
+	if (gHeadlessClient)
+	{
+		gl_string = HEADLESS_VENDOR_STRING + " " + HEADLESS_RENDERER_STRING;
+	}
+	else
+	{
+		gl_string = ll_safe_string((char*)glGetString(GL_VENDOR)) + " " + ll_safe_string((char*)glGetString(GL_RENDERER));
+	}
 	return gl_string;
 }
 
@@ -614,47 +648,47 @@ void LLGLManager::initExtensions()
 	mHasMultitexture = TRUE;
 # else
 	mHasMultitexture = FALSE;
-# endif
+# endif // GL_ARB_multitexture
 # ifdef GL_ARB_texture_env_combine
 	mHasARBEnvCombine = TRUE;	
 # else
 	mHasARBEnvCombine = FALSE;
-# endif
+# endif // GL_ARB_texture_env_combine
 # ifdef GL_ARB_texture_compression
 	mHasCompressedTextures = TRUE;
 # else
 	mHasCompressedTextures = FALSE;
-# endif
+# endif // GL_ARB_texture_compression
 # ifdef GL_ARB_vertex_buffer_object
 	mHasVertexBufferObject = TRUE;
 # else
 	mHasVertexBufferObject = FALSE;
-# endif
+# endif // GL_ARB_vertex_buffer_object
 # ifdef GL_EXT_framebuffer_object
 	mHasFramebufferObject = TRUE;
 # else
 	mHasFramebufferObject = FALSE;
-# endif
+# endif // GL_EXT_framebuffer_object
 # ifdef GL_EXT_framebuffer_multisample
 	mHasFramebufferMultisample = TRUE;
 # else
 	mHasFramebufferMultisample = FALSE;
-# endif
+# endif // GL_EXT_framebuffer_multisample
 # ifdef GL_ARB_draw_buffers
 	mHasDrawBuffers = TRUE;
 #else
 	mHasDrawBuffers = FALSE;
-# endif
+# endif // GL_ARB_draw_buffers
 # if defined(GL_NV_depth_clamp) || defined(GL_ARB_depth_clamp)
 	mHasDepthClamp = TRUE;
 #else
 	mHasDepthClamp = FALSE;
-#endif
+#endif // defined(GL_NV_depth_clamp) || defined(GL_ARB_depth_clamp)
 # if GL_EXT_blend_func_separate
 	mHasBlendFuncSeparate = TRUE;
 #else
 	mHasBlendFuncSeparate = FALSE;
-# endif
+# endif // GL_EXT_blend_func_separate
 	mHasMipMapGeneration = FALSE;
 	mHasSeparateSpecularColor = FALSE;
 	mHasAnisotropic = FALSE;
@@ -1145,7 +1179,7 @@ void assert_glerror()
 		}
 	}
 
-	if (!gNoRender && gDebugGL) 
+	if (gDebugGL) 
 	{
 		do_assert_glerror();
 	}
diff --git a/indra/llrender/llgl.h b/indra/llrender/llgl.h
index 85fab7a0f8..684fd50883 100644
--- a/indra/llrender/llgl.h
+++ b/indra/llrender/llgl.h
@@ -415,7 +415,7 @@ void set_binormals(const S32 index, const U32 stride, const LLVector3 *binormals
 void parse_gl_version( S32* major, S32* minor, S32* release, std::string* vendor_specific );
 
 extern BOOL gClothRipple;
-extern BOOL gNoRender;
+extern BOOL gHeadlessClient;
 extern BOOL gGLActive;
 
 #endif // LL_LLGL_H
diff --git a/indra/llrender/llimagegl.cpp b/indra/llrender/llimagegl.cpp
index e8e98211f1..d4ffd6f88e 100644
--- a/indra/llrender/llimagegl.cpp
+++ b/indra/llrender/llimagegl.cpp
@@ -967,12 +967,14 @@ BOOL LLImageGL::setSubImage(const U8* datap, S32 data_width, S32 data_height, S3
 	}
 	if (mTexName == 0)
 	{
-		llwarns << "Setting subimage on image without GL texture" << llendl;
+		// *TODO: Re-enable warning?  Ran into thread locking issues? DK 2011-02-18
+		//llwarns << "Setting subimage on image without GL texture" << llendl;
 		return FALSE;
 	}
 	if (datap == NULL)
 	{
-		llwarns << "Setting subimage on image with NULL datap" << llendl;
+		// *TODO: Re-enable warning?  Ran into thread locking issues? DK 2011-02-18
+		//llwarns << "Setting subimage on image with NULL datap" << llendl;
 		return FALSE;
 	}
 	
@@ -1100,6 +1102,7 @@ void LLImageGL::setManualImage(U32 target, S32 miplevel, S32 intformat, S32 widt
 //the texture is assiciate with some image by calling glTexImage outside LLImageGL
 BOOL LLImageGL::createGLTexture()
 {
+	if (gHeadlessClient) return FALSE;
 	if (gGLManager.mIsDisabled)
 	{
 		llwarns << "Trying to create a texture while GL is disabled!" << llendl;
@@ -1128,6 +1131,7 @@ BOOL LLImageGL::createGLTexture()
 
 BOOL LLImageGL::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S32 usename/*=0*/, BOOL to_create, S32 category)
 {
+	if (gHeadlessClient) return FALSE;
 	if (gGLManager.mIsDisabled)
 	{
 		llwarns << "Trying to create a texture while GL is disabled!" << llendl;
diff --git a/indra/llui/llfloaterreglistener.cpp b/indra/llui/llfloaterreglistener.cpp
index 821d4543ae..7525b8cab3 100644
--- a/indra/llui/llfloaterreglistener.cpp
+++ b/indra/llui/llfloaterreglistener.cpp
@@ -60,6 +60,11 @@ LLFloaterRegListener::LLFloaterRegListener():
         "Ask to toggle the state of the floater specified in [\"name\"]",
         &LLFloaterRegListener::toggleInstance,
         requiredName);
+    add("instanceVisible",
+        "Return on [\"reply\"] an event whose [\"visible\"] indicates the visibility "
+        "of the floater specified in [\"name\"]",
+        &LLFloaterRegListener::instanceVisible,
+        requiredName);
     LLSD requiredNameButton;
     requiredNameButton["name"] = LLSD();
     requiredNameButton["button"] = LLSD();
@@ -71,9 +76,7 @@ LLFloaterRegListener::LLFloaterRegListener():
 
 void LLFloaterRegListener::getBuildMap(const LLSD& event) const
 {
-    // Honor the "reqid" convention by echoing event["reqid"] in our reply packet.
-    LLReqID reqID(event);
-    LLSD reply(reqID.makeResponse());
+    LLSD reply;
     // Build an LLSD map that mirrors sBuildMap. Since we have no good way to
     // represent a C++ callable in LLSD, the only part of BuildData we can
     // store is the filename. For each LLSD map entry, it would be more
@@ -86,7 +89,7 @@ void LLFloaterRegListener::getBuildMap(const LLSD& event) const
         reply[mi->first] = mi->second.mFile;
     }
     // Send the reply to the LLEventPump named in event["reply"].
-    LLEventPumps::instance().obtain(event["reply"]).post(reply);
+    sendReply(reply, event);
 }
 
 void LLFloaterRegListener::showInstance(const LLSD& event) const
@@ -104,6 +107,12 @@ void LLFloaterRegListener::toggleInstance(const LLSD& event) const
     LLFloaterReg::toggleInstance(event["name"], event["key"]);
 }
 
+void LLFloaterRegListener::instanceVisible(const LLSD& event) const
+{
+    sendReply(LLSDMap("visible", LLFloaterReg::instanceVisible(event["name"], event["key"])),
+              event);
+}
+
 void LLFloaterRegListener::clickButton(const LLSD& event) const
 {
     // If the caller requests a reply, build the reply.
diff --git a/indra/llui/llfloaterreglistener.h b/indra/llui/llfloaterreglistener.h
index 586656667c..24311a2dfa 100644
--- a/indra/llui/llfloaterreglistener.h
+++ b/indra/llui/llfloaterreglistener.h
@@ -47,6 +47,7 @@ private:
     void showInstance(const LLSD& event) const;
     void hideInstance(const LLSD& event) const;
     void toggleInstance(const LLSD& event) const;
+    void instanceVisible(const LLSD& event) const;
     void clickButton(const LLSD& event) const;
 };
 
diff --git a/indra/llui/lllineeditor.cpp b/indra/llui/lllineeditor.cpp
index 7e348656a9..d99ee5a545 100644
--- a/indra/llui/lllineeditor.cpp
+++ b/indra/llui/lllineeditor.cpp
@@ -2290,3 +2290,8 @@ void LLLineEditor::setContextMenu(LLContextMenu* new_context_menu)
 	else
 		mContextMenuHandle.markDead();
 }
+
+void LLLineEditor::setFont(const LLFontGL* font)
+{
+	mGLFont = font;
+}
diff --git a/indra/llui/lllineeditor.h b/indra/llui/lllineeditor.h
index 723423a5b9..7b5fa218f2 100644
--- a/indra/llui/lllineeditor.h
+++ b/indra/llui/lllineeditor.h
@@ -201,6 +201,7 @@ public:
 	const LLColor4& getTentativeFgColor() const { return mTentativeFgColor.get(); }
 
 	const LLFontGL* getFont() const { return mGLFont; }
+	void setFont(const LLFontGL* font);
 
 	void			setIgnoreArrowKeys(BOOL b)		{ mIgnoreArrowKeys = b; }
 	void			setIgnoreTab(BOOL b)			{ mIgnoreTab = b; }
diff --git a/indra/llui/llui.cpp b/indra/llui/llui.cpp
index c300fe55d9..87669574c2 100644
--- a/indra/llui/llui.cpp
+++ b/indra/llui/llui.cpp
@@ -61,6 +61,8 @@
 // for XUIParse
 #include "llquaternion.h"
 #include <boost/tokenizer.hpp>
+#include <boost/algorithm/string/find_iterator.hpp>
+#include <boost/algorithm/string/finder.hpp>
 
 //
 // Globals
@@ -2020,6 +2022,53 @@ void LLUI::positionViewNearMouse(LLView* view, S32 spawn_x, S32 spawn_y)
 	view->translateIntoRectWithExclusion( virtual_window_rect, mouse_rect, FALSE );
 }
 
+LLView* LLUI::resolvePath(LLView* context, const std::string& path)
+{
+	// Nothing about resolvePath() should require non-const LLView*. If caller
+	// wants non-const, call the const flavor and then cast away const-ness.
+	return const_cast<LLView*>(resolvePath(const_cast<const LLView*>(context), path));
+}
+
+const LLView* LLUI::resolvePath(const LLView* context, const std::string& path)
+{
+	// Create an iterator over slash-separated parts of 'path'. Dereferencing
+	// this iterator returns an iterator_range over the substring. Unlike
+	// LLStringUtil::getTokens(), this split_iterator doesn't combine adjacent
+	// delimiters: leading/trailing slash produces an empty substring, double
+	// slash produces an empty substring. That's what we need.
+	boost::split_iterator<std::string::const_iterator> ti(path, boost::first_finder("/")), tend;
+
+	if (ti == tend)
+	{
+		// 'path' is completely empty, no navigation
+		return context;
+	}
+
+	// leading / means "start at root"
+	if (ti->empty())
+	{
+		context = getRootView();
+		++ti;
+	}
+
+	bool recurse = false;
+	for (; ti != tend && context; ++ti)
+	{
+		if (ti->empty()) 
+		{
+			recurse = true;
+		}
+		else
+		{
+			std::string part(ti->begin(), ti->end());
+			context = context->findChildView(part, recurse);
+			recurse = false;
+		}
+	}
+
+	return context;
+}
+
 
 // LLLocalClipRect and LLScreenClipRect moved to lllocalcliprect.h/cpp
 
diff --git a/indra/llui/llui.h b/indra/llui/llui.h
index 62d10df8b2..50cb9e6632 100644
--- a/indra/llui/llui.h
+++ b/indra/llui/llui.h
@@ -185,6 +185,33 @@ public:
 	//helper functions (should probably move free standing rendering helper functions here)
 	static LLView* getRootView() { return sRootView; }
 	static void setRootView(LLView* view) { sRootView = view; }
+	/**
+	 * Walk the LLView tree to resolve a path
+	 * Paths can be discovered using Develop > XUI > Show XUI Paths
+	 *
+	 * A leading "/" indicates the root of the tree is the starting
+	 * position of the search, (otherwise the context node is used)
+	 *
+	 * Adjacent "//" mean that the next level of the search is done
+	 * recursively ("descendant" rather than "child").
+	 *
+	 * Return values: If no match is found, NULL is returned,
+	 * otherwise the matching LLView* is returned.
+	 *
+	 * Examples:
+	 *
+	 * "/" -> return the root view
+	 * "/foo" -> find "foo" as a direct child of the root
+	 * "foo" -> find "foo" as a direct child of the context node
+	 * "//foo" -> find the first "foo" child anywhere in the tree
+	 * "/foo/bar" -> find "foo" as direct child of the root, and
+	 *      "bar" as a direct child of "foo"
+	 * "//foo//bar/baz" -> find the first "foo" anywhere in the
+	 *      tree, the first "bar" anywhere under it, and "baz"
+	 *      as a direct child of that
+	 */
+	static const LLView* resolvePath(const LLView* context, const std::string& path);
+	static LLView* resolvePath(LLView* context, const std::string& path);
 	static std::string locateSkin(const std::string& filename);
 	static void setMousePositionScreen(S32 x, S32 y);
 	static void getMousePositionScreen(S32 *x, S32 *y);
diff --git a/indra/llwindow/CMakeLists.txt b/indra/llwindow/CMakeLists.txt
index 9d174ef1cd..3d89867bc1 100644
--- a/indra/llwindow/CMakeLists.txt
+++ b/indra/llwindow/CMakeLists.txt
@@ -35,16 +35,20 @@ include_directories(
 
 set(llwindow_SOURCE_FILES
     llkeyboard.cpp
+    llkeyboardheadless.cpp
     llwindowheadless.cpp
     llwindowcallbacks.cpp
+    llwindowlistener.cpp
     )
 
 set(llwindow_HEADER_FILES
     CMakeLists.txt
 
     llkeyboard.h
+    llkeyboardheadless.h
     llwindowheadless.h
     llwindowcallbacks.h
+    llwindowlistener.h
     )
 
 set(viewer_SOURCE_FILES
diff --git a/indra/llwindow/llkeyboardheadless.cpp b/indra/llwindow/llkeyboardheadless.cpp
new file mode 100644
index 0000000000..4dfaaed4e1
--- /dev/null
+++ b/indra/llwindow/llkeyboardheadless.cpp
@@ -0,0 +1,50 @@
+/** 
+ * @file llkeyboardheadless.cpp
+ * @brief Handler for assignable key bindings
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+#include "llkeyboardheadless.h"
+#include "llwindowcallbacks.h"
+
+LLKeyboardHeadless::LLKeyboardHeadless()
+{ }
+
+void LLKeyboardHeadless::resetMaskKeys()
+{ }
+
+
+BOOL LLKeyboardHeadless::handleKeyDown(const U16 key, const U32 mask)
+{ return FALSE; }
+
+
+BOOL LLKeyboardHeadless::handleKeyUp(const U16 key, const U32 mask)
+{ return FALSE; }
+
+MASK LLKeyboardHeadless::currentMask(BOOL for_mouse_event)
+{ return MASK_NONE; }
+
+void LLKeyboardHeadless::scanKeyboard()
+{ } 
+ 
diff --git a/indra/llwindow/llkeyboardheadless.h b/indra/llwindow/llkeyboardheadless.h
new file mode 100644
index 0000000000..4e666f8ce8
--- /dev/null
+++ b/indra/llwindow/llkeyboardheadless.h
@@ -0,0 +1,45 @@
+/** 
+ * @file llkeyboardheadless.h
+ * @brief Handler for assignable key bindings
+ *
+ * $LicenseInfo:firstyear=2004&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLKEYBOARDHEADLESS_H
+#define LL_LLKEYBOARDHEADLESS_H
+
+#include "llkeyboard.h"
+
+class LLKeyboardHeadless : public LLKeyboard
+{
+public:
+	LLKeyboardHeadless();
+	/*virtual*/ ~LLKeyboardHeadless() {};
+
+	/*virtual*/ BOOL	handleKeyUp(const U16 key, MASK mask);
+	/*virtual*/ BOOL	handleKeyDown(const U16 key, MASK mask);
+	/*virtual*/ void	resetMaskKeys();
+	/*virtual*/ MASK	currentMask(BOOL for_mouse_event);
+	/*virtual*/ void	scanKeyboard();
+};
+
+#endif
diff --git a/indra/llwindow/llwindow.cpp b/indra/llwindow/llwindow.cpp
index 072f694c24..71a5df910d 100644
--- a/indra/llwindow/llwindow.cpp
+++ b/indra/llwindow/llwindow.cpp
@@ -41,6 +41,8 @@
 #include "llkeyboard.h"
 #include "linked_lists.h"
 #include "llwindowcallbacks.h"
+#include "llwindowlistener.h"
+#include <boost/lambda/core.hpp>
 
 
 //
@@ -115,10 +117,19 @@ LLWindow::LLWindow(LLWindowCallbacks* callbacks, BOOL fullscreen, U32 flags)
 	  mHideCursorPermanent(FALSE),
 	  mFlags(flags),
 	  mHighSurrogate(0)
-{ }
+{
+	// gKeyboard is still NULL, so it doesn't do LLWindowListener any good to
+	// pass its value right now. Instead, pass it a nullary function that
+	// will, when we later need it, return the value of gKeyboard.
+	// boost::lambda::var() constructs such a functor on the fly.
+	mListener = new LLWindowListener(callbacks, boost::lambda::var(gKeyboard));
+}
 
 LLWindow::~LLWindow()
-{ }
+{
+	delete mListener;
+	mListener = NULL;
+}
 
 //virtual
 BOOL LLWindow::isValid()
diff --git a/indra/llwindow/llwindow.h b/indra/llwindow/llwindow.h
index e8a86a1880..6bdc01ae88 100644
--- a/indra/llwindow/llwindow.h
+++ b/indra/llwindow/llwindow.h
@@ -36,6 +36,7 @@
 class LLSplashScreen;
 class LLPreeditor;
 class LLWindowCallbacks;
+class LLWindowListener;
 
 // Refer to llwindow_test in test/common/llwindow for usage example
 
@@ -188,6 +189,7 @@ protected:
 	BOOL		mHideCursorPermanent;
 	U32			mFlags;
 	U16			mHighSurrogate;
+	LLWindowListener* mListener;
 
  	// Handle a UTF-16 encoding unit received from keyboard.
  	// Converting the series of UTF-16 encoding units to UTF-32 data,
diff --git a/indra/llwindow/llwindowheadless.cpp b/indra/llwindow/llwindowheadless.cpp
index 35398f1c09..e6e6bc67ff 100644
--- a/indra/llwindow/llwindowheadless.cpp
+++ b/indra/llwindow/llwindowheadless.cpp
@@ -28,6 +28,7 @@
 #include "indra_constants.h"
 
 #include "llwindowheadless.h"
+#include "llkeyboardheadless.h"
 
 //
 // LLWindowHeadless
@@ -37,6 +38,9 @@ LLWindowHeadless::LLWindowHeadless(LLWindowCallbacks* callbacks, const std::stri
 							 BOOL disable_vsync, BOOL use_gl, BOOL ignore_pixel_depth)
 	: LLWindow(callbacks, fullscreen, flags)
 {
+	// Initialize a headless keyboard.
+	gKeyboard = new LLKeyboardHeadless();
+	gKeyboard->setCallbacks(callbacks);
 }
 
 
diff --git a/indra/llwindow/llwindowlistener.cpp b/indra/llwindow/llwindowlistener.cpp
new file mode 100644
index 0000000000..91b99d83c6
--- /dev/null
+++ b/indra/llwindow/llwindowlistener.cpp
@@ -0,0 +1,307 @@
+/** 
+ * @file llwindowlistener.cpp
+ * @brief EventAPI interface for injecting input into LLWindow
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llwindowlistener.h"
+
+#include "llcoord.h"
+#include "llkeyboard.h"
+#include "llwindowcallbacks.h"
+#include <map>
+
+LLWindowListener::LLWindowListener(LLWindowCallbacks *window, const KeyboardGetter& kbgetter)
+	: LLEventAPI("LLWindow", "Inject input events into the LLWindow instance"),
+	  mWindow(window),
+	  mKbGetter(kbgetter)
+{
+	std::string keySomething =
+		"Given [\"keysym\"], [\"keycode\"] or [\"char\"], inject the specified ";
+	std::string keyExplain =
+		"(integer keycode values, or keysym \"XXXX\" from any KEY_XXXX, in\n"
+		"http://hg.secondlife.com/viewer-development/src/tip/indra/llcommon/indra_constants.h )";
+	std::string mask =
+		"Specify optional [\"mask\"] as an array containing any of \"CONTROL\", \"ALT\",\n"
+		"\"SHIFT\" or \"MAC_CONTROL\"; the corresponding modifier bits will be combined\n"
+		"to form the mask used with the event.";
+
+	std::string mouseSomething =
+		"Given [\"button\"], [\"x\"] and [\"y\"], inject the given mouse ";
+	std::string mouseExplain =
+		"(button values \"LEFT\", \"MIDDLE\", \"RIGHT\")";
+
+	add("keyDown",
+		keySomething + "keypress event.\n" + keyExplain + '\n' + mask,
+		&LLWindowListener::keyDown);
+	add("keyUp",
+		keySomething + "key release event.\n" + keyExplain + '\n' + mask,
+		&LLWindowListener::keyUp);
+	add("mouseDown",
+		mouseSomething + "click event.\n" + mouseExplain + '\n' + mask,
+		&LLWindowListener::mouseDown);
+	add("mouseUp",
+		mouseSomething + "release event.\n" + mouseExplain + '\n' + mask,
+		&LLWindowListener::mouseUp);
+	add("mouseMove",
+		std::string("Given [\"x\"] and [\"y\"], inject the given mouse movement event.\n") +
+		mask,
+		&LLWindowListener::mouseMove);
+	add("mouseScroll",
+		"Given an integer number of [\"clicks\"], inject the given mouse scroll event.\n"
+		"(positive clicks moves downward through typical content)",
+		&LLWindowListener::mouseScroll);
+}
+
+template <typename MAPPED>
+class StringLookup
+{
+private:
+	std::string mDesc;
+	typedef std::map<std::string, MAPPED> Map;
+	Map mMap;
+
+public:
+	StringLookup(const std::string& desc): mDesc(desc) {}
+
+	MAPPED lookup(const typename Map::key_type& key) const
+	{
+		typename Map::const_iterator found = mMap.find(key);
+		if (found == mMap.end())
+		{
+			LL_WARNS("LLWindowListener") << "Unknown " << mDesc << " '" << key << "'" << LL_ENDL;
+			return MAPPED();
+		}
+		return found->second;
+	}
+
+protected:
+	void add(const typename Map::key_type& key, const typename Map::mapped_type& value)
+	{
+		mMap.insert(typename Map::value_type(key, value));
+	}
+};
+
+// for WhichKeysym. KeyProxy is like the typedef KEY, except that KeyProxy()
+// (default-constructed) is guaranteed to have the value KEY_NONE.
+class KeyProxy
+{
+public:
+	KeyProxy(KEY k): mKey(k) {}
+	KeyProxy(): mKey(KEY_NONE) {}
+	operator KEY() const { return mKey; }
+
+private:
+	KEY mKey;
+};
+
+struct WhichKeysym: public StringLookup<KeyProxy>
+{
+	WhichKeysym(): StringLookup<KeyProxy>("keysym")
+	{
+		add("RETURN",		KEY_RETURN);
+		add("LEFT",			KEY_LEFT);
+		add("RIGHT",		KEY_RIGHT);
+		add("UP",			KEY_UP);
+		add("DOWN",			KEY_DOWN);
+		add("ESCAPE",		KEY_ESCAPE);
+		add("BACKSPACE",	KEY_BACKSPACE);
+		add("DELETE",		KEY_DELETE);
+		add("SHIFT",		KEY_SHIFT);
+		add("CONTROL",		KEY_CONTROL);
+		add("ALT",			KEY_ALT);
+		add("HOME",			KEY_HOME);
+		add("END",			KEY_END);
+		add("PAGE_UP",		KEY_PAGE_UP);
+		add("PAGE_DOWN",	KEY_PAGE_DOWN);
+		add("HYPHEN",		KEY_HYPHEN);
+		add("EQUALS",		KEY_EQUALS);
+		add("INSERT",		KEY_INSERT);
+		add("CAPSLOCK",		KEY_CAPSLOCK);
+		add("TAB",			KEY_TAB);
+		add("ADD",			KEY_ADD);
+		add("SUBTRACT",		KEY_SUBTRACT);
+		add("MULTIPLY",		KEY_MULTIPLY);
+		add("DIVIDE",		KEY_DIVIDE);
+		add("F1",			KEY_F1);
+		add("F2",			KEY_F2);
+		add("F3",			KEY_F3);
+		add("F4",			KEY_F4);
+		add("F5",			KEY_F5);
+		add("F6",			KEY_F6);
+		add("F7",			KEY_F7);
+		add("F8",			KEY_F8);
+		add("F9",			KEY_F9);
+		add("F10",			KEY_F10);
+		add("F11",			KEY_F11);
+		add("F12",			KEY_F12);
+
+		add("PAD_UP",		KEY_PAD_UP);
+		add("PAD_DOWN",		KEY_PAD_DOWN);
+		add("PAD_LEFT",		KEY_PAD_LEFT);
+		add("PAD_RIGHT",	KEY_PAD_RIGHT);
+		add("PAD_HOME",		KEY_PAD_HOME);
+		add("PAD_END",		KEY_PAD_END);
+		add("PAD_PGUP",		KEY_PAD_PGUP);
+		add("PAD_PGDN",		KEY_PAD_PGDN);
+		add("PAD_CENTER",	KEY_PAD_CENTER); // the 5 in the middle
+		add("PAD_INS",		KEY_PAD_INS);
+		add("PAD_DEL",		KEY_PAD_DEL);
+		add("PAD_RETURN",	KEY_PAD_RETURN);
+		add("PAD_ADD",		KEY_PAD_ADD); // not used
+		add("PAD_SUBTRACT", KEY_PAD_SUBTRACT); // not used
+		add("PAD_MULTIPLY", KEY_PAD_MULTIPLY); // not used
+		add("PAD_DIVIDE",	KEY_PAD_DIVIDE); // not used
+
+		add("BUTTON0",		KEY_BUTTON0);
+		add("BUTTON1",		KEY_BUTTON1);
+		add("BUTTON2",		KEY_BUTTON2);
+		add("BUTTON3",		KEY_BUTTON3);
+		add("BUTTON4",		KEY_BUTTON4);
+		add("BUTTON5",		KEY_BUTTON5);
+		add("BUTTON6",		KEY_BUTTON6);
+		add("BUTTON7",		KEY_BUTTON7);
+		add("BUTTON8",		KEY_BUTTON8);
+		add("BUTTON9",		KEY_BUTTON9);
+		add("BUTTON10",		KEY_BUTTON10);
+		add("BUTTON11",		KEY_BUTTON11);
+		add("BUTTON12",		KEY_BUTTON12);
+		add("BUTTON13",		KEY_BUTTON13);
+		add("BUTTON14",		KEY_BUTTON14);
+		add("BUTTON15",		KEY_BUTTON15);
+	}
+};
+static WhichKeysym keysyms;
+
+struct WhichMask: public StringLookup<MASK>
+{
+	WhichMask(): StringLookup<MASK>("shift mask")
+	{
+		add("NONE",			MASK_NONE);
+		add("CONTROL",		MASK_CONTROL); // Mapped to cmd on Macs
+		add("ALT",			MASK_ALT);
+		add("SHIFT",		MASK_SHIFT);
+		add("MAC_CONTROL",	MASK_MAC_CONTROL); // Un-mapped Ctrl key on Macs, not used on Windows
+	}
+};
+static WhichMask masks;
+
+static MASK getMask(const LLSD& event)
+{
+	MASK mask(MASK_NONE);
+	LLSD masknames(event["mask"]);
+	for (LLSD::array_const_iterator ai(masknames.beginArray()), aend(masknames.endArray());
+		 ai != aend; ++ai)
+	{
+		mask |= masks.lookup(*ai);
+	}
+	return mask;
+}
+
+static KEY getKEY(const LLSD& event)
+{
+    if (event.has("keysym"))
+	{
+		return keysyms.lookup(event["keysym"]);
+	}
+	else if (event.has("keycode"))
+	{
+		return KEY(event["keycode"].asInteger());
+	}
+	else
+	{
+		return KEY(event["char"].asString()[0]);
+	}
+}
+
+void LLWindowListener::keyDown(LLSD const & evt)
+{
+	mKbGetter()->handleTranslatedKeyDown(getKEY(evt), getMask(evt));
+}
+
+void LLWindowListener::keyUp(LLSD const & evt)
+{
+	mKbGetter()->handleTranslatedKeyUp(getKEY(evt), getMask(evt));
+}
+
+// for WhichButton
+typedef BOOL (LLWindowCallbacks::*MouseFunc)(LLWindow *, LLCoordGL, MASK);
+struct Actions
+{
+	Actions(const MouseFunc& d, const MouseFunc& u): down(d), up(u), valid(true) {}
+	Actions(): valid(false) {}
+	MouseFunc down, up;
+	bool valid;
+};
+
+struct WhichButton: public StringLookup<Actions>
+{
+	WhichButton(): StringLookup<Actions>("mouse button")
+	{
+		add("LEFT",		Actions(&LLWindowCallbacks::handleMouseDown,
+								&LLWindowCallbacks::handleMouseUp));
+		add("RIGHT",	Actions(&LLWindowCallbacks::handleRightMouseDown,
+								&LLWindowCallbacks::handleRightMouseUp));
+		add("MIDDLE",	Actions(&LLWindowCallbacks::handleMiddleMouseDown,
+								&LLWindowCallbacks::handleMiddleMouseUp));
+	}
+};
+static WhichButton buttons;
+
+static LLCoordGL getPos(const LLSD& event)
+{
+	return LLCoordGL(event["x"].asInteger(), event["y"].asInteger());
+}
+
+void LLWindowListener::mouseDown(LLSD const & evt)
+{
+	Actions actions(buttons.lookup(evt["button"]));
+	if (actions.valid)
+	{
+		(mWindow->*(actions.down))(NULL, getPos(evt), getMask(evt));
+	}
+}
+
+void LLWindowListener::mouseUp(LLSD const & evt)
+{
+	Actions actions(buttons.lookup(evt["button"]));
+	if (actions.valid)
+	{
+		(mWindow->*(actions.up))(NULL, getPos(evt), getMask(evt));
+	}
+}
+
+void LLWindowListener::mouseMove(LLSD const & evt)
+{
+	mWindow->handleMouseMove(NULL, getPos(evt), getMask(evt));
+}
+
+void LLWindowListener::mouseScroll(LLSD const & evt)
+{
+	S32 clicks = evt["clicks"].asInteger();
+
+	mWindow->handleScrollWheel(NULL, clicks);
+}
+
diff --git a/indra/llwindow/llwindowlistener.h b/indra/llwindow/llwindowlistener.h
new file mode 100644
index 0000000000..74e577ff93
--- /dev/null
+++ b/indra/llwindow/llwindowlistener.h
@@ -0,0 +1,55 @@
+/** 
+ * @file llwindowlistener.h
+ * @brief EventAPI interface for injecting input into LLWindow
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLWINDOWLISTENER_H
+#define LL_LLWINDOWLISTENER_H
+
+#include "lleventapi.h"
+#include <boost/function.hpp>
+
+class LLKeyboard;
+class LLWindowCallbacks;
+
+class LLWindowListener : public LLEventAPI
+{
+public:
+	typedef boost::function<LLKeyboard*()> KeyboardGetter;
+	LLWindowListener(LLWindowCallbacks * window, const KeyboardGetter& kbgetter);
+
+	void keyDown(LLSD const & evt);
+	void keyUp(LLSD const & evt);
+	void mouseDown(LLSD const & evt);
+	void mouseUp(LLSD const & evt);
+	void mouseMove(LLSD const & evt);
+	void mouseScroll(LLSD const & evt);
+
+private:
+	LLWindowCallbacks * mWindow;
+	KeyboardGetter mKbGetter;
+};
+
+
+#endif // LL_LLWINDOWLISTENER_H
diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index 32d3a31786..b1cb10665b 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -416,6 +416,7 @@ set(viewer_SOURCE_FILES
     llsidepaneliteminfo.cpp
     llsidepaneltaskinfo.cpp
     llsidetray.cpp
+    llsidetraylistener.cpp
     llsidetraypanelcontainer.cpp
     llsky.cpp
     llslurl.cpp
@@ -954,6 +955,7 @@ set(viewer_HEADER_FILES
     llsidepaneliteminfo.h
     llsidepaneltaskinfo.h
     llsidetray.h
+    llsidetraylistener.h
     llsidetraypanelcontainer.h
     llsky.h
     llslurl.h
diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index dd85c5cb86..3048f8d492 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -2623,10 +2623,10 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
-    <key>DisableRendering</key>
+    <key>HeadlessClient</key>
     <map>
       <key>Comment</key>
-      <string>Disable GL rendering and GUI (load testing)</string>
+      <string>Run in headless mode by disabling GL rendering, keyboard, etc</string>
       <key>Persist</key>
       <integer>1</integer>
       <key>Type</key>
diff --git a/indra/newview/llagent.cpp b/indra/newview/llagent.cpp
index 7d908df5ce..7d491a7774 100644
--- a/indra/newview/llagent.cpp
+++ b/indra/newview/llagent.cpp
@@ -1119,12 +1119,6 @@ void LLAgent::resetControlFlags()
 //-----------------------------------------------------------------------------
 void LLAgent::setAFK()
 {
-	// Drones can't go AFK
-	if (gNoRender)
-	{
-		return;
-	}
-
 	if (!gAgent.getRegion())
 	{
 		// Don't set AFK if we're not talking to a region yet.
@@ -1684,11 +1678,6 @@ void LLAgent::clearRenderState(U8 clearstate)
 //-----------------------------------------------------------------------------
 U8 LLAgent::getRenderState()
 {
-	if (gNoRender || gKeyboard == NULL)
-	{
-		return 0;
-	}
-
 	// *FIX: don't do stuff in a getter!  This is infinite loop city!
 	if ((mTypingTimer.getElapsedTimeF32() > TYPING_TIMEOUT_SECS) 
 		&& (mRenderState & AGENT_STATE_TYPING))
diff --git a/indra/newview/llagentcamera.cpp b/indra/newview/llagentcamera.cpp
index f01d5ff1f5..6c5c3bcdab 100644
--- a/indra/newview/llagentcamera.cpp
+++ b/indra/newview/llagentcamera.cpp
@@ -282,25 +282,22 @@ void LLAgentCamera::resetView(BOOL reset_camera, BOOL change_camera)
 		gAgent.stopAutoPilot(TRUE);
 	}
 
-	if (!gNoRender)
-	{
-		LLSelectMgr::getInstance()->unhighlightAll();
+	LLSelectMgr::getInstance()->unhighlightAll();
 
-		// By popular request, keep land selection while walking around. JC
-		// LLViewerParcelMgr::getInstance()->deselectLand();
+	// By popular request, keep land selection while walking around. JC
+	// LLViewerParcelMgr::getInstance()->deselectLand();
 
-		// force deselect when walking and attachment is selected
-		// this is so people don't wig out when their avatar moves without animating
-		if (LLSelectMgr::getInstance()->getSelection()->isAttachment())
-		{
-			LLSelectMgr::getInstance()->deselectAll();
-		}
+	// force deselect when walking and attachment is selected
+	// this is so people don't wig out when their avatar moves without animating
+	if (LLSelectMgr::getInstance()->getSelection()->isAttachment())
+	{
+		LLSelectMgr::getInstance()->deselectAll();
+	}
 
-		if (gMenuHolder != NULL)
-		{
-			// Hide all popup menus
-			gMenuHolder->hideMenus();
-		}
+	if (gMenuHolder != NULL)
+	{
+		// Hide all popup menus
+		gMenuHolder->hideMenus();
 	}
 
 	if (change_camera && !gSavedSettings.getBOOL("FreezeTime"))
diff --git a/indra/newview/llagentlistener.cpp b/indra/newview/llagentlistener.cpp
index d520debc31..c453fe91f4 100644
--- a/indra/newview/llagentlistener.cpp
+++ b/indra/newview/llagentlistener.cpp
@@ -37,6 +37,8 @@
 #include "llviewerobject.h"
 #include "llviewerobjectlist.h"
 #include "llviewerregion.h"
+#include "llsdutil.h"
+#include "llsdutil_math.h"
 
 LLAgentListener::LLAgentListener(LLAgent &agent)
   : LLEventAPI("LLAgent",
@@ -53,6 +55,15 @@ LLAgentListener::LLAgentListener(LLAgent &agent)
 	add("requestStand",
         "Ask to stand up",
         &LLAgentListener::requestStand);
+    add("resetAxes",
+        "Set the agent to a fixed orientation (optionally specify [\"lookat\"] = array of [x, y, z])",
+        &LLAgentListener::resetAxes);
+    add("getAxes",
+        "Send information about the agent's orientation on [\"reply\"]:\n"
+        "[\"euler\"]: map of {roll, pitch, yaw}\n"
+        "[\"quat\"]:  array of [x, y, z, w] quaternion values",
+        &LLAgentListener::getAxes,
+        LLSDMap("reply", LLSD()));
 }
 
 void LLAgentListener::requestTeleport(LLSD const & event_data) const
@@ -104,3 +115,28 @@ void LLAgentListener::requestStand(LLSD const & event_data) const
 	mAgent.setControlFlags(AGENT_CONTROL_STAND_UP);
 }
 
+void LLAgentListener::resetAxes(const LLSD& event) const
+{
+    if (event.has("lookat"))
+    {
+        mAgent.resetAxes(ll_vector3_from_sd(event["lookat"]));
+    }
+    else
+    {
+        // no "lookat", default call
+        mAgent.resetAxes();
+    }
+}
+
+void LLAgentListener::getAxes(const LLSD& event) const
+{
+    LLQuaternion quat(mAgent.getQuat());
+    F32 roll, pitch, yaw;
+    quat.getEulerAngles(&roll, &pitch, &yaw);
+    // The official query API for LLQuaternion's [x, y, z, w] values is its
+    // public member mQ...
+    sendReply(LLSDMap
+              ("quat", llsd_copy_array(boost::begin(quat.mQ), boost::end(quat.mQ)))
+              ("euler", LLSDMap("roll", roll)("pitch", pitch)("yaw", yaw)),
+              event);
+}
diff --git a/indra/newview/llagentlistener.h b/indra/newview/llagentlistener.h
index 9b585152f4..0aa58d0b16 100644
--- a/indra/newview/llagentlistener.h
+++ b/indra/newview/llagentlistener.h
@@ -44,6 +44,8 @@ private:
 	void requestTeleport(LLSD const & event_data) const;
 	void requestSit(LLSD const & event_data) const;
 	void requestStand(LLSD const & event_data) const;
+	void resetAxes(const LLSD& event) const;
+	void getAxes(const LLSD& event) const;
 
 private:
 	LLAgent & mAgent;
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index cfb5853cfd..d96e376bc7 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -925,7 +925,7 @@ bool LLAppViewer::init()
 	}
 
 	// If we don't have the right GL requirements, exit.
-	if (!gGLManager.mHasRequirements && !gNoRender)
+	if (!gGLManager.mHasRequirements)
 	{	
 		// can't use an alert here since we're exiting and
 		// all hell breaks lose.
@@ -1215,7 +1215,8 @@ bool LLAppViewer::mainLoop()
 				}
 
 				// Render scene.
-				if (!LLApp::isExiting())
+				// *TODO: Should we run display() even during gHeadlessClient?  DK 2011-02-18
+				if (!LLApp::isExiting() && !gHeadlessClient)
 				{
 					pingMainloopTimeout("Main:Display");
 					gGLActive = TRUE;
@@ -1243,8 +1244,7 @@ bool LLAppViewer::mainLoop()
 				}
 
 				// yield cooperatively when not running as foreground window
-				if (   gNoRender
-					   || (gViewerWindow && !gViewerWindow->mWindow->getVisible())
+				if (   (gViewerWindow && !gViewerWindow->mWindow->getVisible())
 						|| !gFocusMgr.getAppHasFocus())
 				{
 					// Sleep if we're not rendering, or the window is minimized.
@@ -2737,7 +2737,7 @@ bool LLAppViewer::initWindow()
 	LL_INFOS("AppInit") << "Initializing window..." << LL_ENDL;
 
 	// store setting in a global for easy access and modification
-	gNoRender = gSavedSettings.getBOOL("DisableRendering");
+	gHeadlessClient = gSavedSettings.getBOOL("HeadlessClient");
 
 	// always start windowed
 	BOOL ignorePixelDepth = gSavedSettings.getBOOL("IgnorePixelDepth");
@@ -2773,28 +2773,25 @@ bool LLAppViewer::initWindow()
 		gViewerWindow->mWindow->maximize();
 	}
 
-	if (!gNoRender)
+	//
+	// Initialize GL stuff
+	//
+
+	if (mForceGraphicsDetail)
 	{
-		//
-		// Initialize GL stuff
-		//
+		LLFeatureManager::getInstance()->setGraphicsLevel(gSavedSettings.getU32("RenderQualityPerformance"), false);
+	}
+			
+	// Set this flag in case we crash while initializing GL
+	gSavedSettings.setBOOL("RenderInitError", TRUE);
+	gSavedSettings.saveToFile( gSavedSettings.getString("ClientSettingsFile"), TRUE );
 
-		if (mForceGraphicsDetail)
-		{
-			LLFeatureManager::getInstance()->setGraphicsLevel(gSavedSettings.getU32("RenderQualityPerformance"), false);
-		}
-				
-		// Set this flag in case we crash while initializing GL
-		gSavedSettings.setBOOL("RenderInitError", TRUE);
-		gSavedSettings.saveToFile( gSavedSettings.getString("ClientSettingsFile"), TRUE );
-	
-		gPipeline.init();
-		stop_glerror();
-		gViewerWindow->initGLDefaults();
+	gPipeline.init();
+	stop_glerror();
+	gViewerWindow->initGLDefaults();
 
-		gSavedSettings.setBOOL("RenderInitError", FALSE);
-		gSavedSettings.saveToFile( gSavedSettings.getString("ClientSettingsFile"), TRUE );
-	}
+	gSavedSettings.setBOOL("RenderInitError", FALSE);
+	gSavedSettings.saveToFile( gSavedSettings.getString("ClientSettingsFile"), TRUE );
 
 	//If we have a startup crash, it's usually near GL initialization, so simulate that.
 	if(gCrashOnStartup)
@@ -2836,12 +2833,9 @@ void LLAppViewer::cleanupSavedSettings()
 		
 	gSavedSettings.setBOOL("ShowObjectUpdates", gShowObjectUpdates);
 	
-	if (!gNoRender)
+	if (gDebugView)
 	{
-		if (gDebugView)
-		{
-			gSavedSettings.setBOOL("ShowDebugConsole", gDebugView->mDebugConsolep->getVisible());
-		}
+		gSavedSettings.setBOOL("ShowDebugConsole", gDebugView->mDebugConsolep->getVisible());
 	}
 
 	// save window position if not maximized
@@ -3822,7 +3816,7 @@ void LLAppViewer::badNetworkHandler()
 // is destroyed.
 void LLAppViewer::saveFinalSnapshot()
 {
-	if (!mSavedFinalSnapshot && !gNoRender)
+	if (!mSavedFinalSnapshot)
 	{
 		gSavedSettings.setVector3d("FocusPosOnLogout", gAgentCamera.calcFocusPositionTargetGlobal());
 		gSavedSettings.setVector3d("CameraPosOnLogout", gAgentCamera.calcCameraPositionTargetGlobal());
@@ -4226,34 +4220,31 @@ void LLAppViewer::idle()
 	//
 	// Update weather effects
 	//
-	if (!gNoRender)
-	{
-		LLWorld::getInstance()->updateClouds(gFrameDTClamped);
-		gSky.propagateHeavenlyBodies(gFrameDTClamped);				// moves sun, moon, and planets
+	LLWorld::getInstance()->updateClouds(gFrameDTClamped);
+	gSky.propagateHeavenlyBodies(gFrameDTClamped);				// moves sun, moon, and planets
 
-		// Update wind vector 
-		LLVector3 wind_position_region;
-		static LLVector3 average_wind;
+	// Update wind vector 
+	LLVector3 wind_position_region;
+	static LLVector3 average_wind;
 
-		LLViewerRegion *regionp;
-		regionp = LLWorld::getInstance()->resolveRegionGlobal(wind_position_region, gAgent.getPositionGlobal());	// puts agent's local coords into wind_position	
-		if (regionp)
-		{
-			gWindVec = regionp->mWind.getVelocity(wind_position_region);
+	LLViewerRegion *regionp;
+	regionp = LLWorld::getInstance()->resolveRegionGlobal(wind_position_region, gAgent.getPositionGlobal());	// puts agent's local coords into wind_position	
+	if (regionp)
+	{
+		gWindVec = regionp->mWind.getVelocity(wind_position_region);
 
-			// Compute average wind and use to drive motion of water
-			
-			average_wind = regionp->mWind.getAverage();
-			F32 cloud_density = regionp->mCloudLayer.getDensityRegion(wind_position_region);
-			
-			gSky.setCloudDensityAtAgent(cloud_density);
-			gSky.setWind(average_wind);
-			//LLVOWater::setWind(average_wind);
-		}
-		else
-		{
-			gWindVec.setVec(0.0f, 0.0f, 0.0f);
-		}
+		// Compute average wind and use to drive motion of water
+		
+		average_wind = regionp->mWind.getAverage();
+		F32 cloud_density = regionp->mCloudLayer.getDensityRegion(wind_position_region);
+		
+		gSky.setCloudDensityAtAgent(cloud_density);
+		gSky.setWind(average_wind);
+		//LLVOWater::setWind(average_wind);
+	}
+	else
+	{
+		gWindVec.setVec(0.0f, 0.0f, 0.0f);
 	}
 	
 	//////////////////////////////////////
@@ -4262,13 +4253,10 @@ void LLAppViewer::idle()
 	// Here, particles are updated and drawables are moved.
 	//
 	
-	if (!gNoRender)
-	{
-		LLFastTimer t(FTM_WORLD_UPDATE);
-		gPipeline.updateMove();
+	LLFastTimer t(FTM_WORLD_UPDATE);
+	gPipeline.updateMove();
 
-		LLWorld::getInstance()->updateParticles();
-	}
+	LLWorld::getInstance()->updateParticles();
 
 	if (LLViewerJoystick::getInstance()->getOverrideCamera())
 	{
@@ -4634,12 +4622,9 @@ void LLAppViewer::disconnectViewer()
 	gSavedSettings.setBOOL("FlyingAtExit", gAgent.getFlying() );
 
 	// Un-minimize all windows so they don't get saved minimized
-	if (!gNoRender)
+	if (gFloaterView)
 	{
-		if (gFloaterView)
-		{
-			gFloaterView->restoreAll();
-		}
+		gFloaterView->restoreAll();
 	}
 
 	if (LLSelectMgr::getInstance())
diff --git a/indra/newview/llfloaterbump.cpp b/indra/newview/llfloaterbump.cpp
index 61cf4dad93..eeb81085bb 100644
--- a/indra/newview/llfloaterbump.cpp
+++ b/indra/newview/llfloaterbump.cpp
@@ -38,13 +38,11 @@
 ///----------------------------------------------------------------------------
 /// Class LLFloaterBump
 ///----------------------------------------------------------------------------
-extern BOOL gNoRender;
 
 // Default constructor
 LLFloaterBump::LLFloaterBump(const LLSD& key) 
 :	LLFloater(key)
 {
-	if(gNoRender) return;
 }
 
 
diff --git a/indra/newview/llhudeffectlookat.cpp b/indra/newview/llhudeffectlookat.cpp
index 8cf7d23f88..72f64752d6 100644
--- a/indra/newview/llhudeffectlookat.cpp
+++ b/indra/newview/llhudeffectlookat.cpp
@@ -587,11 +587,6 @@ void LLHUDEffectLookAt::update()
  */
 bool LLHUDEffectLookAt::calcTargetPosition()
 {
-	if (gNoRender)
-	{
-		return false;
-	}
-
 	LLViewerObject *target_obj = (LLViewerObject *)mTargetObject;
 	LLVector3 local_offset;
 	
diff --git a/indra/newview/llhudmanager.cpp b/indra/newview/llhudmanager.cpp
index 5f3178b955..8f14b53db0 100644
--- a/indra/newview/llhudmanager.cpp
+++ b/indra/newview/llhudmanager.cpp
@@ -38,8 +38,6 @@
 #include "llviewercontrol.h"
 #include "llviewerobjectlist.h"
 
-extern BOOL gNoRender;
-
 // These are loaded from saved settings.
 LLColor4 LLHUDManager::sParentColor;
 LLColor4 LLHUDManager::sChildColor;
@@ -150,11 +148,6 @@ LLHUDEffect *LLHUDManager::createViewerEffect(const U8 type, BOOL send_to_sim, B
 //static
 void LLHUDManager::processViewerEffect(LLMessageSystem *mesgsys, void **user_data)
 {
-	if (gNoRender)
-	{
-		return;
-	}
-
 	LLHUDEffect *effectp = NULL;
 	LLUUID effect_id;
 	U8 effect_type = 0;
diff --git a/indra/newview/llimfloater.cpp b/indra/newview/llimfloater.cpp
index f74ae92a7b..50a9c56518 100644
--- a/indra/newview/llimfloater.cpp
+++ b/indra/newview/llimfloater.cpp
@@ -56,6 +56,7 @@
 #include "llrootview.h"
 #include "llspeakers.h"
 #include "llsidetray.h"
+#include "llviewerchat.h"
 
 
 static const S32 RECT_PADDING_NOT_INIT = -1;
@@ -266,7 +267,9 @@ BOOL LLIMFloater::postBuild()
 	mInputEditor->setMaxTextLength(1023);
 	// enable line history support for instant message bar
 	mInputEditor->setEnableLineHistory(TRUE);
-	
+
+	LLFontGL* font = LLViewerChat::getChatFont();
+	mInputEditor->setFont(font);	
 	
 	mInputEditor->setFocusReceivedCallback( boost::bind(onInputEditorFocusReceived, _1, this) );
 	mInputEditor->setFocusLostCallback( boost::bind(onInputEditorFocusLost, _1, this) );
@@ -891,6 +894,7 @@ void LLIMFloater::updateChatHistoryStyle()
 
 void LLIMFloater::processChatHistoryStyleUpdate(const LLSD& newvalue)
 {
+	LLFontGL* font = LLViewerChat::getChatFont();
 	LLFloaterReg::const_instance_list_t& inst_list = LLFloaterReg::getFloaterList("impanel");
 	for (LLFloaterReg::const_instance_list_t::const_iterator iter = inst_list.begin();
 		 iter != inst_list.end(); ++iter)
@@ -899,6 +903,7 @@ void LLIMFloater::processChatHistoryStyleUpdate(const LLSD& newvalue)
 		if (floater)
 		{
 			floater->updateChatHistoryStyle();
+			floater->mInputEditor->setFont(font);
 		}
 	}
 
diff --git a/indra/newview/llimview.cpp b/indra/newview/llimview.cpp
index 0ef502b81b..ec3fe48151 100644
--- a/indra/newview/llimview.cpp
+++ b/indra/newview/llimview.cpp
@@ -3183,10 +3183,6 @@ public:
 			//just like a normal IM
 			//this is just replicated code from process_improved_im
 			//and should really go in it's own function -jwolk
-			if (gNoRender)
-			{
-				return;
-			}
 			LLChat chat;
 
 			std::string message = message_params["message"].asString();
@@ -3263,11 +3259,6 @@ public:
 		} //end if invitation has instant message
 		else if ( input["body"].has("voice") )
 		{
-			if (gNoRender)
-			{
-				return;
-			}
-			
 			if(!LLVoiceClient::getInstance()->voiceEnabled() || !LLVoiceClient::getInstance()->isVoiceWorking())
 			{
 				// Don't display voice invites unless the user has voice enabled.
diff --git a/indra/newview/lllogininstance.cpp b/indra/newview/lllogininstance.cpp
index 33e051bfab..abcd8588dc 100644
--- a/indra/newview/lllogininstance.cpp
+++ b/indra/newview/lllogininstance.cpp
@@ -480,10 +480,12 @@ LLLoginInstance::LLLoginInstance() :
 {
 	mLoginModule->getEventPump().listen("lllogininstance", 
 		boost::bind(&LLLoginInstance::handleLoginEvent, this, _1));
-	mDispatcher.add("fail.login", boost::bind(&LLLoginInstance::handleLoginFailure, this, _1));
-	mDispatcher.add("connect",    boost::bind(&LLLoginInstance::handleLoginSuccess, this, _1));
-	mDispatcher.add("disconnect", boost::bind(&LLLoginInstance::handleDisconnect, this, _1));
-	mDispatcher.add("indeterminate", boost::bind(&LLLoginInstance::handleIndeterminate, this, _1));
+	// This internal use of LLEventDispatcher doesn't really need
+	// per-function descriptions.
+	mDispatcher.add("fail.login", "", boost::bind(&LLLoginInstance::handleLoginFailure, this, _1));
+	mDispatcher.add("connect",    "", boost::bind(&LLLoginInstance::handleLoginSuccess, this, _1));
+	mDispatcher.add("disconnect", "", boost::bind(&LLLoginInstance::handleDisconnect, this, _1));
+	mDispatcher.add("indeterminate", "", boost::bind(&LLLoginInstance::handleIndeterminate, this, _1));
 }
 
 LLLoginInstance::~LLLoginInstance()
@@ -625,11 +627,7 @@ bool LLLoginInstance::handleLoginEvent(const LLSD& event)
 
 	// Call the method registered in constructor, if any, for more specific
 	// handling
-	LLEventDispatcher::Callable method(mDispatcher.get(event["change"]));
-	if (! method.empty())
-	{
-		method(event);
-	}
+	mDispatcher.try_call(event);
 	return false;
 }
 
diff --git a/indra/newview/llphysicsmotion.cpp b/indra/newview/llphysicsmotion.cpp
index 67bb139a5e..7799ef04e6 100644
--- a/indra/newview/llphysicsmotion.cpp
+++ b/indra/newview/llphysicsmotion.cpp
@@ -1,718 +1,718 @@
-/** 

- * @file llphysicsmotion.cpp

- * @brief Implementation of LLPhysicsMotion class.

- *

- * $LicenseInfo:firstyear=2001&license=viewergpl$

- * 

- * Copyright (c) 2001-2009, Linden Research, Inc.

- * 

- * Second Life Viewer Source Code

- * The source code in this file ("Source Code") is provided by Linden Lab

- * to you under the terms of the GNU General Public License, version 2.0

- * ("GPL"), unless you have obtained a separate licensing agreement

- * ("Other License"), formally executed by you and Linden Lab.  Terms of

- * the GPL can be found in doc/GPL-license.txt in this distribution, or

- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2

- * 

- * There are special exceptions to the terms and conditions of the GPL as

- * it is applied to this Source Code. View the full text of the exception

- * in the file doc/FLOSS-exception.txt in this software distribution, or

- * online at

- * http://secondlifegrid.net/programs/open_source/licensing/flossexception

- * 

- * By copying, modifying or distributing this software, you acknowledge

- * that you have read and understood your obligations described above,

- * and agree to abide by those obligations.

- * 

- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO

- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,

- * COMPLETENESS OR PERFORMANCE.

- * $/LicenseInfo$

- */

-

-//-----------------------------------------------------------------------------

-// Header Files

-//-----------------------------------------------------------------------------

-#include "llviewerprecompiledheaders.h"

-#include "linden_common.h"

-

-#include "m3math.h"

-#include "v3dmath.h"

-

-#include "llphysicsmotion.h"

-#include "llagent.h"

-#include "llcharacter.h"

-#include "llviewercontrol.h"

-#include "llviewervisualparam.h"

-#include "llvoavatarself.h"

-

-typedef std::map<std::string, std::string> controller_map_t;

-typedef std::map<std::string, F32> default_controller_map_t;

-

-#define MIN_REQUIRED_PIXEL_AREA_BREAST_MOTION 0.f;

-

-inline F64 llsgn(const F64 a)

-{

-        if (a >= 0)

-                return 1;

-        return -1;

-}

-

-/* 

-   At a high level, this works by setting temporary parameters that are not stored

-   in the avatar's list of params, and are not conveyed to other users.  We accomplish

-   this by creating some new temporary driven params inside avatar_lad that are then driven

-   by the actual params that the user sees and sets.  For example, in the old system,

-   the user sets a param called breast bouyancy, which controls the Z value of the breasts.

-   In our new system, the user still sets the breast bouyancy, but that param is redefined

-   as a driver param so that affects a new temporary driven param that the bounce is applied

-   to.

-*/

-

-class LLPhysicsMotion

-{

-public:

-        /*

-          param_driver_name: The param that controls the params that are being affected by the physics.

-          joint_name: The joint that the body part is attached to.  The joint is

-          used to determine the orientation (rotation) of the body part.

-

-          character: The avatar that this physics affects.

-

-          motion_direction_vec: The direction (in world coordinates) that determines the

-          motion.  For example, (0,0,1) is up-down, and means that up-down motion is what

-          determines how this joint moves.

-

-          controllers: The various settings (e.g. spring force, mass) that determine how

-          the body part behaves.

-        */

-        LLPhysicsMotion(const std::string &param_driver_name, 

-                        const std::string &joint_name,

-                        LLCharacter *character,

-                        const LLVector3 &motion_direction_vec,

-                        const controller_map_t &controllers) :

-                mParamDriverName(param_driver_name),

-                mJointName(joint_name),

-                mMotionDirectionVec(motion_direction_vec),

-                mParamDriver(NULL),

-                mParamControllers(controllers),

-                mCharacter(character),

-                mLastTime(0),

-                mPosition_local(0),

-                mVelocityJoint_local(0),

-                mPositionLastUpdate_local(0)

-        {

-                mJointState = new LLJointState;

-        }

-

-        BOOL initialize();

-

-        ~LLPhysicsMotion() {}

-

-        BOOL onUpdate(F32 time);

-

-        LLPointer<LLJointState> getJointState() 

-        {

-                return mJointState;

-        }

-protected:

-        F32 getParamValue(const std::string& controller_key)

-        {

-                const controller_map_t::const_iterator& entry = mParamControllers.find(controller_key);

-                if (entry == mParamControllers.end())

-                {

-                        return sDefaultController[controller_key];

-                }

-                const std::string& param_name = (*entry).second.c_str();

-                return mCharacter->getVisualParamWeight(param_name.c_str());

-        }

-        void setParamValue(LLViewerVisualParam *param,

-                           const F32 new_value_local);

-

-        F32 toLocal(const LLVector3 &world);

-        F32 calculateVelocity_local(const F32 time_delta);

-        F32 calculateAcceleration_local(F32 velocity_local,

-                                        const F32 time_delta);

-private:

-        const std::string mParamDriverName;

-        const std::string mParamControllerName;

-        const LLVector3 mMotionDirectionVec;

-        const std::string mJointName;

-

-        F32 mPosition_local;

-        F32 mVelocityJoint_local; // How fast the joint is moving

-        F32 mAccelerationJoint_local; // Acceleration on the joint

-

-        F32 mVelocity_local; // How fast the param is moving

-        F32 mPositionLastUpdate_local;

-        LLVector3 mPosition_world;

-

-        LLViewerVisualParam *mParamDriver;

-        const controller_map_t mParamControllers;

-        

-        LLPointer<LLJointState> mJointState;

-        LLCharacter *mCharacter;

-

-        F32 mLastTime;

-        

-        static default_controller_map_t sDefaultController;

-};

-

-default_controller_map_t initDefaultController()

-{

-        default_controller_map_t controller;

-        controller["Mass"] = 0.2f;

-        controller["Gravity"] = 0.0f;

-        controller["Damping"] = .05f;

-        controller["Drag"] = 0.15f;

-        controller["MaxEffect"] = 0.1f;

-        controller["Spring"] = 0.1f;

-        controller["Gain"] = 10.0f;

-        return controller;

-}

-

-default_controller_map_t LLPhysicsMotion::sDefaultController = initDefaultController();

-

-BOOL LLPhysicsMotion::initialize()

-{

-        if (!mJointState->setJoint(mCharacter->getJoint(mJointName.c_str())))

-                return FALSE;

-        mJointState->setUsage(LLJointState::ROT);

-

-        mParamDriver = (LLViewerVisualParam*)mCharacter->getVisualParam(mParamDriverName.c_str());

-        if (mParamDriver == NULL)

-        {

-                llinfos << "Failure reading in  [ " << mParamDriverName << " ]" << llendl;

-                return FALSE;

-        }

-

-        return TRUE;

-}

-

-LLPhysicsMotionController::LLPhysicsMotionController(const LLUUID &id) : 

-        LLMotion(id),

-        mCharacter(NULL)

-{

-        mName = "breast_motion";

-}

-

-LLPhysicsMotionController::~LLPhysicsMotionController()

-{

-        for (motion_vec_t::iterator iter = mMotions.begin();

-             iter != mMotions.end();

-             ++iter)

-        {

-                delete (*iter);

-        }

-}

-

-BOOL LLPhysicsMotionController::onActivate() 

-{ 

-        return TRUE; 

-}

-

-void LLPhysicsMotionController::onDeactivate() 

-{

-}

-

-LLMotion::LLMotionInitStatus LLPhysicsMotionController::onInitialize(LLCharacter *character)

-{

-        mCharacter = character;

-

-        mMotions.clear();

-

-        // Breast Cleavage

-        {

-                controller_map_t controller;

-                controller["Mass"] = "Breast_Physics_Mass";

-                controller["Gravity"] = "Breast_Physics_Gravity";

-                controller["Drag"] = "Breast_Physics_Drag";

-                controller["Damping"] = "Breast_Physics_InOut_Damping";

-                controller["MaxEffect"] = "Breast_Physics_InOut_Max_Effect";

-                controller["Spring"] = "Breast_Physics_InOut_Spring";

-                controller["Gain"] = "Breast_Physics_InOut_Gain";

-                LLPhysicsMotion *motion = new LLPhysicsMotion("Breast_Physics_InOut_Controller",

-                                                                                                          "mChest",

-                                                                                                          character,

-                                                                                                          LLVector3(-1,0,0),

-                                                                                                          controller);

-                if (!motion->initialize())

-                {

-                        llassert_always(FALSE);

-                        return STATUS_FAILURE;

-                }

-                addMotion(motion);

-        }

-

-        // Breast Bounce

-        {

-                controller_map_t controller;

-                controller["Mass"] = "Breast_Physics_Mass";

-                controller["Gravity"] = "Breast_Physics_Gravity";

-                controller["Drag"] = "Breast_Physics_Drag";

-                controller["Damping"] = "Breast_Physics_UpDown_Damping";

-                controller["MaxEffect"] = "Breast_Physics_UpDown_Max_Effect";

-                controller["Spring"] = "Breast_Physics_UpDown_Spring";

-                controller["Gain"] = "Breast_Physics_UpDown_Gain";

-                LLPhysicsMotion *motion = new LLPhysicsMotion("Breast_Physics_UpDown_Controller",

-                                                                                                          "mChest",

-                                                                                                          character,

-                                                                                                          LLVector3(0,0,1),

-                                                                                                          controller);

-                if (!motion->initialize())

-                {

-                        llassert_always(FALSE);

-                        return STATUS_FAILURE;

-                }

-                addMotion(motion);

-        }

-

-        // Breast Sway

-        {

-                controller_map_t controller;

-                controller["Mass"] = "Breast_Physics_Mass";

-                controller["Gravity"] = "Breast_Physics_Gravity";

-                controller["Drag"] = "Breast_Physics_Drag";

-                controller["Damping"] = "Breast_Physics_LeftRight_Damping";

-                controller["MaxEffect"] = "Breast_Physics_LeftRight_Max_Effect";

-                controller["Spring"] = "Breast_Physics_LeftRight_Spring";

-                controller["Gain"] = "Breast_Physics_LeftRight_Gain";

-                LLPhysicsMotion *motion = new LLPhysicsMotion("Breast_Physics_LeftRight_Controller",

-                                                                                                          "mChest",

-                                                                                                          character,

-                                                                                                          LLVector3(0,-1,0),

-                                                                                                          controller);

-                if (!motion->initialize())

-                {

-                        llassert_always(FALSE);

-                        return STATUS_FAILURE;

-                }

-                addMotion(motion);

-        }

-        // Butt Bounce

-        {

-                controller_map_t controller;

-                controller["Mass"] = "Butt_Physics_Mass";

-                controller["Gravity"] = "Butt_Physics_Gravity";

-                controller["Drag"] = "Butt_Physics_Drag";

-                controller["Damping"] = "Butt_Physics_UpDown_Damping";

-                controller["MaxEffect"] = "Butt_Physics_UpDown_Max_Effect";

-                controller["Spring"] = "Butt_Physics_UpDown_Spring";

-                controller["Gain"] = "Butt_Physics_UpDown_Gain";

-                LLPhysicsMotion *motion = new LLPhysicsMotion("Butt_Physics_UpDown_Controller",

-                                                                                                          "mPelvis",

-                                                                                                          character,

-                                                                                                          LLVector3(0,0,-1),

-                                                                                                          controller);

-                if (!motion->initialize())

-                {

-                        llassert_always(FALSE);

-                        return STATUS_FAILURE;

-                }

-                addMotion(motion);

-        }

-

-        // Butt LeftRight

-        {

-                controller_map_t controller;

-                controller["Mass"] = "Butt_Physics_Mass";

-                controller["Gravity"] = "Butt_Physics_Gravity";

-                controller["Drag"] = "Butt_Physics_Drag";

-                controller["Damping"] = "Butt_Physics_LeftRight_Damping";

-                controller["MaxEffect"] = "Butt_Physics_LeftRight_Max_Effect";

-                controller["Spring"] = "Butt_Physics_LeftRight_Spring";

-                controller["Gain"] = "Butt_Physics_LeftRight_Gain";

-                LLPhysicsMotion *motion = new LLPhysicsMotion("Butt_Physics_LeftRight_Controller",

-                                                                                                          "mPelvis",

-                                                                                                          character,

-                                                                                                          LLVector3(0,-1,0),

-                                                                                                          controller);

-                if (!motion->initialize())

-                {

-                        llassert_always(FALSE);

-                        return STATUS_FAILURE;

-                }

-                addMotion(motion);

-        }

-

-        // Belly Bounce

-        {

-                controller_map_t controller;

-                controller["Mass"] = "Belly_Physics_Mass";

-                controller["Gravity"] = "Belly_Physics_Gravity";

-                controller["Drag"] = "Belly_Physics_Drag";

-                controller["Damping"] = "Belly_Physics_UpDown_Damping";

-                controller["MaxEffect"] = "Belly_Physics_UpDown_Max_Effect";

-                controller["Spring"] = "Belly_Physics_UpDown_Spring";

-                controller["Gain"] = "Belly_Physics_UpDown_Gain";

-                LLPhysicsMotion *motion = new LLPhysicsMotion("Belly_Physics_UpDown_Controller",

-                                                                                                          "mPelvis",

-                                                                                                          character,

-                                                                                                          LLVector3(0,0,-1),

-                                                                                                          controller);

-                if (!motion->initialize())

-                {

-                        llassert_always(FALSE);

-                        return STATUS_FAILURE;

-                }

-                addMotion(motion);

-        }

-        

-        return STATUS_SUCCESS;

-}

-

-void LLPhysicsMotionController::addMotion(LLPhysicsMotion *motion)

-{

-        addJointState(motion->getJointState());

-        mMotions.push_back(motion);

-}

-

-F32 LLPhysicsMotionController::getMinPixelArea() 

-{

-        return MIN_REQUIRED_PIXEL_AREA_BREAST_MOTION;

-}

-

-// Local space means "parameter space".

-F32 LLPhysicsMotion::toLocal(const LLVector3 &world)

-{

-        LLJoint *joint = mJointState->getJoint();

-        const LLQuaternion rotation_world = joint->getWorldRotation();

-        

-        LLVector3 dir_world = mMotionDirectionVec * rotation_world;

-        dir_world.normalize();

-        return world * dir_world;

-}

-

-F32 LLPhysicsMotion::calculateVelocity_local(const F32 time_delta)

-{

-        LLJoint *joint = mJointState->getJoint();

-        const LLVector3 position_world = joint->getWorldPosition();

-        const LLQuaternion rotation_world = joint->getWorldRotation();

-        const LLVector3 last_position_world = mPosition_world;

-        const LLVector3 velocity_world = (position_world-last_position_world) / time_delta;

-        const F32 velocity_local = toLocal(velocity_world);

-        return velocity_local;

-}

-

-F32 LLPhysicsMotion::calculateAcceleration_local(const F32 velocity_local,

-                                                 const F32 time_delta)

-{

-//        const F32 smoothing = getParamValue("Smoothing");

-        static const F32 smoothing = 3.0f; // Removed smoothing param since it's probably not necessary

-        const F32 acceleration_local = velocity_local - mVelocityJoint_local;

-        

-        const F32 smoothed_acceleration_local = 

-                acceleration_local * 1.0/smoothing + 

-                mAccelerationJoint_local * (smoothing-1.0)/smoothing;

-        

-        return smoothed_acceleration_local;

-}

-

-BOOL LLPhysicsMotionController::onUpdate(F32 time, U8* joint_mask)

-{

-        // Skip if disabled globally.

-        if (!gSavedSettings.getBOOL("AvatarPhysics"))

-        {

-                return TRUE;

-        }

-        

-        BOOL update_visuals = FALSE;

-        for (motion_vec_t::iterator iter = mMotions.begin();

-             iter != mMotions.end();

-             ++iter)

-        {

-                LLPhysicsMotion *motion = (*iter);

-                update_visuals |= motion->onUpdate(time);

-        }

-                

-        if (update_visuals)

-                mCharacter->updateVisualParams();

-        

-        return TRUE;

-}

-

-

-// Return TRUE if character has to update visual params.

-BOOL LLPhysicsMotion::onUpdate(F32 time)

-{

-        // static FILE *mFileWrite = fopen("c:\\temp\\avatar_data.txt","w");

-        

-        if (!mParamDriver)

-                return FALSE;

-

-        if (!mLastTime)

-        {

-                mLastTime = time;

-                return FALSE;

-        }

-

-        ////////////////////////////////////////////////////////////////////////////////

-        // Get all parameters and settings

-        //

-

-        const F32 time_delta = time - mLastTime;

-        if (time_delta > 3.0 || time_delta <= 0.01)

-        {

-                mLastTime = time;

-                return FALSE;

-        }

-

-        // Higher LOD is better.  This controls the granularity

-        // and frequency of updates for the motions.

-        const F32 lod_factor = LLVOAvatar::sPhysicsLODFactor;

-        if (lod_factor == 0)

-        {

-                return TRUE;

-        }

-

-        LLJoint *joint = mJointState->getJoint();

-

-        const F32 behavior_mass = getParamValue("Mass");

-        const F32 behavior_gravity = getParamValue("Gravity");

-        const F32 behavior_spring = getParamValue("Spring");

-        const F32 behavior_gain = getParamValue("Gain");

-        const F32 behavior_damping = getParamValue("Damping");

-        const F32 behavior_drag = getParamValue("Drag");

-        const BOOL physics_test = gSavedSettings.getBOOL("AvatarPhysicsTest") && gAgent.isGodlike();

-        

-        F32 behavior_maxeffect = getParamValue("MaxEffect");

-        if (physics_test)

-                behavior_maxeffect = 1.0f;

-        // Maximum effect is [0,1] range.

-        const F32 min_val = 0.5f-behavior_maxeffect/2.0;

-        const F32 max_val = 0.5f+behavior_maxeffect/2.0;

-

-        // mPositon_local should be in normalized 0,1 range already.  Just making sure...

-        F32 position_current_local = llclamp(mPosition_local,

-                                             0.0f,

-                                             1.0f);

-

-        // Normalize the param position to be from [0,1].

-        // We have to use normalized values because there may be more than one driven param,

-        // and each of these driven params may have its own range.

-        // This means we'll do all our calculations in normalized [0,1] local coordinates.

-        F32 position_user_local = mParamDriver->getWeight();

-        position_user_local = (position_user_local - mParamDriver->getMinWeight()) / (mParamDriver->getMaxWeight() - mParamDriver->getMinWeight());

-

-        // If the effect is turned off then don't process unless we need one more update

-        // to set the position to the default (i.e. user) position.

-        if ((behavior_maxeffect == 0) && (position_current_local == position_user_local))

-        {

-            return FALSE;

-        }

-

-        //

-        // End parameters and settings

-        ////////////////////////////////////////////////////////////////////////////////

-

-

-        ////////////////////////////////////////////////////////////////////////////////

-        // Calculate velocity and acceleration in parameter space.

-        //

-        

-        const F32 velocity_joint_local = calculateVelocity_local(time_delta);

-        const F32 acceleration_joint_local = calculateAcceleration_local(velocity_joint_local, time_delta);

-

-        //

-        // End velocity and acceleration

-        ////////////////////////////////////////////////////////////////////////////////

-

-

-        ////////////////////////////////////////////////////////////////////////////////

-        // Calculate the total force 

-        //

-

-        // Spring force is a restoring force towards the original user-set breast position.

-        // F = kx

-        const F32 spring_length = position_current_local - position_user_local;

-        const F32 force_spring = -spring_length * behavior_spring;

-

-        // Acceleration is the force that comes from the change in velocity of the torso.

-        // F = ma

-        const F32 force_accel = behavior_gain * (acceleration_joint_local * behavior_mass);

-

-        // Gravity always points downward in world space.

-        // F = mg

-        const LLVector3 gravity_world(0,0,1);

-        const F32 force_gravity = behavior_gain * (toLocal(gravity_world) * behavior_gravity * behavior_mass);

-                

-        // Damping is a restoring force that opposes the current velocity.

-        // F = -kv

-        const F32 force_damping = -behavior_damping * mVelocity_local;

-                

-        // Drag is a force imparted by velocity (intuitively it is similar to wind resistance)

-        // F = .5kv^2

-        const F32 force_drag = .5*behavior_drag*velocity_joint_local*velocity_joint_local*llsgn(velocity_joint_local);

-

-        const F32 force_net = (force_accel + 

-                               force_gravity +

-                               force_spring + 

-                               force_damping + 

-                               force_drag);

-

-        //

-        // End total force

-        ////////////////////////////////////////////////////////////////////////////////

-

-        

-        ////////////////////////////////////////////////////////////////////////////////

-        // Calculate new params

-        //

-

-        // Calculate the new acceleration based on the net force.

-        // a = F/m

-        const F32 acceleration_new_local = force_net / behavior_mass;

-        static const F32 max_acceleration = 10.0f; // magic number, used to be customizable.

-        F32 velocity_new_local = mVelocity_local + acceleration_new_local;

-        velocity_new_local = llclamp(velocity_new_local, 

-                                     -max_acceleration, max_acceleration);

-        

-        // Temporary debugging setting to cause all avatars to move, for profiling purposes.

-        if (physics_test)

-        {

-                velocity_new_local = sin(time*4.0);

-        }

-        // Calculate the new parameters, or remain unchanged if max speed is 0.

-        F32 position_new_local = position_current_local + velocity_new_local*time_delta;

-        if (behavior_maxeffect == 0)

-            position_new_local = position_user_local;

-

-        // Zero out the velocity if the param is being pushed beyond its limits.

-        if ((position_new_local < min_val && velocity_new_local < 0) || 

-            (position_new_local > max_val && velocity_new_local > 0))

-        {

-                velocity_new_local = 0;

-        }

-

-	// Check for NaN values.  A NaN value is detected if the variables doesn't equal itself.  

-	// If NaN, then reset everything.

-	if ((mPosition_local != mPosition_local) ||

-	    (mVelocity_local != mVelocity_local) ||

-	    (position_new_local != position_new_local))

-	{

-		position_new_local = 0;

-		position_current_local = 0;

-		position_user_local = 0;

-		mVelocity_local = 0;

-		mVelocityJoint_local = 0;

-		mAccelerationJoint_local = 0;

-		mPosition_local = 0;

-		mPosition_world = LLVector3(0,0,0);

-	}

-

-        const F32 position_new_local_clamped = llclamp(position_new_local,

-						       min_val,

-						       max_val);

-

-        LLDriverParam *driver_param = dynamic_cast<LLDriverParam *>(mParamDriver);

-        llassert_always(driver_param);

-        if (driver_param)

-        {

-                // If this is one of our "hidden" driver params, then make sure it's

-                // the default value.

-                if ((driver_param->getGroup() != VISUAL_PARAM_GROUP_TWEAKABLE) &&

-                    (driver_param->getGroup() != VISUAL_PARAM_GROUP_TWEAKABLE_NO_TRANSMIT))

-                {

-                        mCharacter->setVisualParamWeight(driver_param,

-                                                         0,

-                                                         FALSE);

-                }

-                for (LLDriverParam::entry_list_t::iterator iter = driver_param->mDriven.begin();

-                     iter != driver_param->mDriven.end();

-                     ++iter)

-                {

-                        LLDrivenEntry &entry = (*iter);

-                        LLViewerVisualParam *driven_param = entry.mParam;

-                        setParamValue(driven_param,position_new_local_clamped);

-                }

-        }

-        

-        //

-        // End calculate new params

-        ////////////////////////////////////////////////////////////////////////////////

-

-        ////////////////////////////////////////////////////////////////////////////////

-        // Conditionally update the visual params

-        //

-        

-        // Updating the visual params (i.e. what the user sees) is fairly expensive.

-        // So only update if the params have changed enough, and also take into account

-        // the graphics LOD settings.

-        

-        BOOL update_visuals = FALSE;

-

-        // For non-self, if the avatar is small enough visually, then don't update.

-        const F32 area_for_max_settings = 0.0;

-        const F32 area_for_min_settings = 1400.0;

-        const F32 area_for_this_setting = area_for_max_settings + (area_for_min_settings-area_for_max_settings)*(1.0-lod_factor);

-        const F32 pixel_area = fsqrtf(mCharacter->getPixelArea());

-        

-        const BOOL is_self = (dynamic_cast<LLVOAvatarSelf *>(mCharacter) != NULL);

-        if ((pixel_area > area_for_this_setting) || is_self)

-        {

-                const F32 position_diff_local = llabs(mPositionLastUpdate_local-position_new_local_clamped);

-                const F32 min_delta = (1.01f-lod_factor)*0.4f;

-                if (llabs(position_diff_local) > min_delta)

-                {

-                        update_visuals = TRUE;

-                        mPositionLastUpdate_local = position_new_local;

-                }

-        }

-

-        //

-        // End update visual params

-        ////////////////////////////////////////////////////////////////////////////////

-

-        mVelocityJoint_local = velocity_joint_local;

-

-        mVelocity_local = velocity_new_local;

-        mAccelerationJoint_local = acceleration_joint_local;

-        mPosition_local = position_new_local;

-

-        mPosition_world = joint->getWorldPosition();

-        mLastTime = time;

-

-        /*

-          // Write out debugging info into a spreadsheet.

-          if (mFileWrite != NULL && is_self)

-          {

-          fprintf(mFileWrite,"%f\t%f\t%f \t\t%f \t\t%f\t%f\t%f\t \t\t%f\t%f\t%f\t%f\t%f \t\t%f\t%f\t%f\n",

-          position_new_local,

-          velocity_new_local,

-          acceleration_new_local,

-

-          time_delta,

-

-          mPosition_world[0],

-          mPosition_world[1],

-          mPosition_world[2],

-

-          force_net,

-          force_spring,

-          force_accel,

-          force_damping,

-          force_drag,

-

-          spring_length,

-          velocity_joint_local,

-          acceleration_joint_local

-          );

-          }

-        */

-

-        return update_visuals;

-}

-

-// Range of new_value_local is assumed to be [0 , 1] normalized.

-void LLPhysicsMotion::setParamValue(LLViewerVisualParam *param,

-                                    F32 new_value_normalized)

-{

-        const F32 value_min_local = param->getMinWeight();

-        const F32 value_max_local = param->getMaxWeight();

-

-        const F32 new_value_local = value_min_local + (value_max_local-value_min_local) * new_value_normalized;

-

-        mCharacter->setVisualParamWeight(param,

-                                         new_value_local,

-                                         FALSE);

-}

+/** 
+ * @file llphysicsmotion.cpp
+ * @brief Implementation of LLPhysicsMotion class.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * Copyright (c) 2001-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+//-----------------------------------------------------------------------------
+// Header Files
+//-----------------------------------------------------------------------------
+#include "llviewerprecompiledheaders.h"
+#include "linden_common.h"
+
+#include "m3math.h"
+#include "v3dmath.h"
+
+#include "llphysicsmotion.h"
+#include "llagent.h"
+#include "llcharacter.h"
+#include "llviewercontrol.h"
+#include "llviewervisualparam.h"
+#include "llvoavatarself.h"
+
+typedef std::map<std::string, std::string> controller_map_t;
+typedef std::map<std::string, F32> default_controller_map_t;
+
+#define MIN_REQUIRED_PIXEL_AREA_BREAST_MOTION 0.f;
+
+inline F64 llsgn(const F64 a)
+{
+        if (a >= 0)
+                return 1;
+        return -1;
+}
+
+/* 
+   At a high level, this works by setting temporary parameters that are not stored
+   in the avatar's list of params, and are not conveyed to other users.  We accomplish
+   this by creating some new temporary driven params inside avatar_lad that are then driven
+   by the actual params that the user sees and sets.  For example, in the old system,
+   the user sets a param called breast bouyancy, which controls the Z value of the breasts.
+   In our new system, the user still sets the breast bouyancy, but that param is redefined
+   as a driver param so that affects a new temporary driven param that the bounce is applied
+   to.
+*/
+
+class LLPhysicsMotion
+{
+public:
+        /*
+          param_driver_name: The param that controls the params that are being affected by the physics.
+          joint_name: The joint that the body part is attached to.  The joint is
+          used to determine the orientation (rotation) of the body part.
+
+          character: The avatar that this physics affects.
+
+          motion_direction_vec: The direction (in world coordinates) that determines the
+          motion.  For example, (0,0,1) is up-down, and means that up-down motion is what
+          determines how this joint moves.
+
+          controllers: The various settings (e.g. spring force, mass) that determine how
+          the body part behaves.
+        */
+        LLPhysicsMotion(const std::string &param_driver_name, 
+                        const std::string &joint_name,
+                        LLCharacter *character,
+                        const LLVector3 &motion_direction_vec,
+                        const controller_map_t &controllers) :
+                mParamDriverName(param_driver_name),
+                mJointName(joint_name),
+                mMotionDirectionVec(motion_direction_vec),
+                mParamDriver(NULL),
+                mParamControllers(controllers),
+                mCharacter(character),
+                mLastTime(0),
+                mPosition_local(0),
+                mVelocityJoint_local(0),
+                mPositionLastUpdate_local(0)
+        {
+                mJointState = new LLJointState;
+        }
+
+        BOOL initialize();
+
+        ~LLPhysicsMotion() {}
+
+        BOOL onUpdate(F32 time);
+
+        LLPointer<LLJointState> getJointState() 
+        {
+                return mJointState;
+        }
+protected:
+        F32 getParamValue(const std::string& controller_key)
+        {
+                const controller_map_t::const_iterator& entry = mParamControllers.find(controller_key);
+                if (entry == mParamControllers.end())
+                {
+                        return sDefaultController[controller_key];
+                }
+                const std::string& param_name = (*entry).second.c_str();
+                return mCharacter->getVisualParamWeight(param_name.c_str());
+        }
+        void setParamValue(LLViewerVisualParam *param,
+                           const F32 new_value_local);
+
+        F32 toLocal(const LLVector3 &world);
+        F32 calculateVelocity_local(const F32 time_delta);
+        F32 calculateAcceleration_local(F32 velocity_local,
+                                        const F32 time_delta);
+private:
+        const std::string mParamDriverName;
+        const std::string mParamControllerName;
+        const LLVector3 mMotionDirectionVec;
+        const std::string mJointName;
+
+        F32 mPosition_local;
+        F32 mVelocityJoint_local; // How fast the joint is moving
+        F32 mAccelerationJoint_local; // Acceleration on the joint
+
+        F32 mVelocity_local; // How fast the param is moving
+        F32 mPositionLastUpdate_local;
+        LLVector3 mPosition_world;
+
+        LLViewerVisualParam *mParamDriver;
+        const controller_map_t mParamControllers;
+        
+        LLPointer<LLJointState> mJointState;
+        LLCharacter *mCharacter;
+
+        F32 mLastTime;
+        
+        static default_controller_map_t sDefaultController;
+};
+
+default_controller_map_t initDefaultController()
+{
+        default_controller_map_t controller;
+        controller["Mass"] = 0.2f;
+        controller["Gravity"] = 0.0f;
+        controller["Damping"] = .05f;
+        controller["Drag"] = 0.15f;
+        controller["MaxEffect"] = 0.1f;
+        controller["Spring"] = 0.1f;
+        controller["Gain"] = 10.0f;
+        return controller;
+}
+
+default_controller_map_t LLPhysicsMotion::sDefaultController = initDefaultController();
+
+BOOL LLPhysicsMotion::initialize()
+{
+        if (!mJointState->setJoint(mCharacter->getJoint(mJointName.c_str())))
+                return FALSE;
+        mJointState->setUsage(LLJointState::ROT);
+
+        mParamDriver = (LLViewerVisualParam*)mCharacter->getVisualParam(mParamDriverName.c_str());
+        if (mParamDriver == NULL)
+        {
+                llinfos << "Failure reading in  [ " << mParamDriverName << " ]" << llendl;
+                return FALSE;
+        }
+
+        return TRUE;
+}
+
+LLPhysicsMotionController::LLPhysicsMotionController(const LLUUID &id) : 
+        LLMotion(id),
+        mCharacter(NULL)
+{
+        mName = "breast_motion";
+}
+
+LLPhysicsMotionController::~LLPhysicsMotionController()
+{
+        for (motion_vec_t::iterator iter = mMotions.begin();
+             iter != mMotions.end();
+             ++iter)
+        {
+                delete (*iter);
+        }
+}
+
+BOOL LLPhysicsMotionController::onActivate() 
+{ 
+        return TRUE; 
+}
+
+void LLPhysicsMotionController::onDeactivate() 
+{
+}
+
+LLMotion::LLMotionInitStatus LLPhysicsMotionController::onInitialize(LLCharacter *character)
+{
+        mCharacter = character;
+
+        mMotions.clear();
+
+        // Breast Cleavage
+        {
+                controller_map_t controller;
+                controller["Mass"] = "Breast_Physics_Mass";
+                controller["Gravity"] = "Breast_Physics_Gravity";
+                controller["Drag"] = "Breast_Physics_Drag";
+                controller["Damping"] = "Breast_Physics_InOut_Damping";
+                controller["MaxEffect"] = "Breast_Physics_InOut_Max_Effect";
+                controller["Spring"] = "Breast_Physics_InOut_Spring";
+                controller["Gain"] = "Breast_Physics_InOut_Gain";
+                LLPhysicsMotion *motion = new LLPhysicsMotion("Breast_Physics_InOut_Controller",
+                                                                                                          "mChest",
+                                                                                                          character,
+                                                                                                          LLVector3(-1,0,0),
+                                                                                                          controller);
+                if (!motion->initialize())
+                {
+                        llassert_always(FALSE);
+                        return STATUS_FAILURE;
+                }
+                addMotion(motion);
+        }
+
+        // Breast Bounce
+        {
+                controller_map_t controller;
+                controller["Mass"] = "Breast_Physics_Mass";
+                controller["Gravity"] = "Breast_Physics_Gravity";
+                controller["Drag"] = "Breast_Physics_Drag";
+                controller["Damping"] = "Breast_Physics_UpDown_Damping";
+                controller["MaxEffect"] = "Breast_Physics_UpDown_Max_Effect";
+                controller["Spring"] = "Breast_Physics_UpDown_Spring";
+                controller["Gain"] = "Breast_Physics_UpDown_Gain";
+                LLPhysicsMotion *motion = new LLPhysicsMotion("Breast_Physics_UpDown_Controller",
+                                                                                                          "mChest",
+                                                                                                          character,
+                                                                                                          LLVector3(0,0,1),
+                                                                                                          controller);
+                if (!motion->initialize())
+                {
+                        llassert_always(FALSE);
+                        return STATUS_FAILURE;
+                }
+                addMotion(motion);
+        }
+
+        // Breast Sway
+        {
+                controller_map_t controller;
+                controller["Mass"] = "Breast_Physics_Mass";
+                controller["Gravity"] = "Breast_Physics_Gravity";
+                controller["Drag"] = "Breast_Physics_Drag";
+                controller["Damping"] = "Breast_Physics_LeftRight_Damping";
+                controller["MaxEffect"] = "Breast_Physics_LeftRight_Max_Effect";
+                controller["Spring"] = "Breast_Physics_LeftRight_Spring";
+                controller["Gain"] = "Breast_Physics_LeftRight_Gain";
+                LLPhysicsMotion *motion = new LLPhysicsMotion("Breast_Physics_LeftRight_Controller",
+                                                                                                          "mChest",
+                                                                                                          character,
+                                                                                                          LLVector3(0,-1,0),
+                                                                                                          controller);
+                if (!motion->initialize())
+                {
+                        llassert_always(FALSE);
+                        return STATUS_FAILURE;
+                }
+                addMotion(motion);
+        }
+        // Butt Bounce
+        {
+                controller_map_t controller;
+                controller["Mass"] = "Butt_Physics_Mass";
+                controller["Gravity"] = "Butt_Physics_Gravity";
+                controller["Drag"] = "Butt_Physics_Drag";
+                controller["Damping"] = "Butt_Physics_UpDown_Damping";
+                controller["MaxEffect"] = "Butt_Physics_UpDown_Max_Effect";
+                controller["Spring"] = "Butt_Physics_UpDown_Spring";
+                controller["Gain"] = "Butt_Physics_UpDown_Gain";
+                LLPhysicsMotion *motion = new LLPhysicsMotion("Butt_Physics_UpDown_Controller",
+                                                                                                          "mPelvis",
+                                                                                                          character,
+                                                                                                          LLVector3(0,0,-1),
+                                                                                                          controller);
+                if (!motion->initialize())
+                {
+                        llassert_always(FALSE);
+                        return STATUS_FAILURE;
+                }
+                addMotion(motion);
+        }
+
+        // Butt LeftRight
+        {
+                controller_map_t controller;
+                controller["Mass"] = "Butt_Physics_Mass";
+                controller["Gravity"] = "Butt_Physics_Gravity";
+                controller["Drag"] = "Butt_Physics_Drag";
+                controller["Damping"] = "Butt_Physics_LeftRight_Damping";
+                controller["MaxEffect"] = "Butt_Physics_LeftRight_Max_Effect";
+                controller["Spring"] = "Butt_Physics_LeftRight_Spring";
+                controller["Gain"] = "Butt_Physics_LeftRight_Gain";
+                LLPhysicsMotion *motion = new LLPhysicsMotion("Butt_Physics_LeftRight_Controller",
+                                                                                                          "mPelvis",
+                                                                                                          character,
+                                                                                                          LLVector3(0,-1,0),
+                                                                                                          controller);
+                if (!motion->initialize())
+                {
+                        llassert_always(FALSE);
+                        return STATUS_FAILURE;
+                }
+                addMotion(motion);
+        }
+
+        // Belly Bounce
+        {
+                controller_map_t controller;
+                controller["Mass"] = "Belly_Physics_Mass";
+                controller["Gravity"] = "Belly_Physics_Gravity";
+                controller["Drag"] = "Belly_Physics_Drag";
+                controller["Damping"] = "Belly_Physics_UpDown_Damping";
+                controller["MaxEffect"] = "Belly_Physics_UpDown_Max_Effect";
+                controller["Spring"] = "Belly_Physics_UpDown_Spring";
+                controller["Gain"] = "Belly_Physics_UpDown_Gain";
+                LLPhysicsMotion *motion = new LLPhysicsMotion("Belly_Physics_UpDown_Controller",
+                                                                                                          "mPelvis",
+                                                                                                          character,
+                                                                                                          LLVector3(0,0,-1),
+                                                                                                          controller);
+                if (!motion->initialize())
+                {
+                        llassert_always(FALSE);
+                        return STATUS_FAILURE;
+                }
+                addMotion(motion);
+        }
+        
+        return STATUS_SUCCESS;
+}
+
+void LLPhysicsMotionController::addMotion(LLPhysicsMotion *motion)
+{
+        addJointState(motion->getJointState());
+        mMotions.push_back(motion);
+}
+
+F32 LLPhysicsMotionController::getMinPixelArea() 
+{
+        return MIN_REQUIRED_PIXEL_AREA_BREAST_MOTION;
+}
+
+// Local space means "parameter space".
+F32 LLPhysicsMotion::toLocal(const LLVector3 &world)
+{
+        LLJoint *joint = mJointState->getJoint();
+        const LLQuaternion rotation_world = joint->getWorldRotation();
+        
+        LLVector3 dir_world = mMotionDirectionVec * rotation_world;
+        dir_world.normalize();
+        return world * dir_world;
+}
+
+F32 LLPhysicsMotion::calculateVelocity_local(const F32 time_delta)
+{
+        LLJoint *joint = mJointState->getJoint();
+        const LLVector3 position_world = joint->getWorldPosition();
+        const LLQuaternion rotation_world = joint->getWorldRotation();
+        const LLVector3 last_position_world = mPosition_world;
+        const LLVector3 velocity_world = (position_world-last_position_world) / time_delta;
+        const F32 velocity_local = toLocal(velocity_world);
+        return velocity_local;
+}
+
+F32 LLPhysicsMotion::calculateAcceleration_local(const F32 velocity_local,
+                                                 const F32 time_delta)
+{
+//        const F32 smoothing = getParamValue("Smoothing");
+        static const F32 smoothing = 3.0f; // Removed smoothing param since it's probably not necessary
+        const F32 acceleration_local = velocity_local - mVelocityJoint_local;
+        
+        const F32 smoothed_acceleration_local = 
+                acceleration_local * 1.0/smoothing + 
+                mAccelerationJoint_local * (smoothing-1.0)/smoothing;
+        
+        return smoothed_acceleration_local;
+}
+
+BOOL LLPhysicsMotionController::onUpdate(F32 time, U8* joint_mask)
+{
+        // Skip if disabled globally.
+        if (!gSavedSettings.getBOOL("AvatarPhysics"))
+        {
+                return TRUE;
+        }
+        
+        BOOL update_visuals = FALSE;
+        for (motion_vec_t::iterator iter = mMotions.begin();
+             iter != mMotions.end();
+             ++iter)
+        {
+                LLPhysicsMotion *motion = (*iter);
+                update_visuals |= motion->onUpdate(time);
+        }
+                
+        if (update_visuals)
+                mCharacter->updateVisualParams();
+        
+        return TRUE;
+}
+
+
+// Return TRUE if character has to update visual params.
+BOOL LLPhysicsMotion::onUpdate(F32 time)
+{
+        // static FILE *mFileWrite = fopen("c:\\temp\\avatar_data.txt","w");
+        
+        if (!mParamDriver)
+                return FALSE;
+
+        if (!mLastTime)
+        {
+                mLastTime = time;
+                return FALSE;
+        }
+
+        ////////////////////////////////////////////////////////////////////////////////
+        // Get all parameters and settings
+        //
+
+        const F32 time_delta = time - mLastTime;
+        if (time_delta > 3.0 || time_delta <= 0.01)
+        {
+                mLastTime = time;
+                return FALSE;
+        }
+
+        // Higher LOD is better.  This controls the granularity
+        // and frequency of updates for the motions.
+        const F32 lod_factor = LLVOAvatar::sPhysicsLODFactor;
+        if (lod_factor == 0)
+        {
+                return TRUE;
+        }
+
+        LLJoint *joint = mJointState->getJoint();
+
+        const F32 behavior_mass = getParamValue("Mass");
+        const F32 behavior_gravity = getParamValue("Gravity");
+        const F32 behavior_spring = getParamValue("Spring");
+        const F32 behavior_gain = getParamValue("Gain");
+        const F32 behavior_damping = getParamValue("Damping");
+        const F32 behavior_drag = getParamValue("Drag");
+        const BOOL physics_test = gSavedSettings.getBOOL("AvatarPhysicsTest") && gAgent.isGodlike();
+        
+        F32 behavior_maxeffect = getParamValue("MaxEffect");
+        if (physics_test)
+                behavior_maxeffect = 1.0f;
+        // Maximum effect is [0,1] range.
+        const F32 min_val = 0.5f-behavior_maxeffect/2.0;
+        const F32 max_val = 0.5f+behavior_maxeffect/2.0;
+
+        // mPositon_local should be in normalized 0,1 range already.  Just making sure...
+        F32 position_current_local = llclamp(mPosition_local,
+                                             0.0f,
+                                             1.0f);
+
+        // Normalize the param position to be from [0,1].
+        // We have to use normalized values because there may be more than one driven param,
+        // and each of these driven params may have its own range.
+        // This means we'll do all our calculations in normalized [0,1] local coordinates.
+        F32 position_user_local = mParamDriver->getWeight();
+        position_user_local = (position_user_local - mParamDriver->getMinWeight()) / (mParamDriver->getMaxWeight() - mParamDriver->getMinWeight());
+
+        // If the effect is turned off then don't process unless we need one more update
+        // to set the position to the default (i.e. user) position.
+        if ((behavior_maxeffect == 0) && (position_current_local == position_user_local))
+        {
+            return FALSE;
+        }
+
+        //
+        // End parameters and settings
+        ////////////////////////////////////////////////////////////////////////////////
+
+
+        ////////////////////////////////////////////////////////////////////////////////
+        // Calculate velocity and acceleration in parameter space.
+        //
+        
+        const F32 velocity_joint_local = calculateVelocity_local(time_delta);
+        const F32 acceleration_joint_local = calculateAcceleration_local(velocity_joint_local, time_delta);
+
+        //
+        // End velocity and acceleration
+        ////////////////////////////////////////////////////////////////////////////////
+
+
+        ////////////////////////////////////////////////////////////////////////////////
+        // Calculate the total force 
+        //
+
+        // Spring force is a restoring force towards the original user-set breast position.
+        // F = kx
+        const F32 spring_length = position_current_local - position_user_local;
+        const F32 force_spring = -spring_length * behavior_spring;
+
+        // Acceleration is the force that comes from the change in velocity of the torso.
+        // F = ma
+        const F32 force_accel = behavior_gain * (acceleration_joint_local * behavior_mass);
+
+        // Gravity always points downward in world space.
+        // F = mg
+        const LLVector3 gravity_world(0,0,1);
+        const F32 force_gravity = behavior_gain * (toLocal(gravity_world) * behavior_gravity * behavior_mass);
+                
+        // Damping is a restoring force that opposes the current velocity.
+        // F = -kv
+        const F32 force_damping = -behavior_damping * mVelocity_local;
+                
+        // Drag is a force imparted by velocity (intuitively it is similar to wind resistance)
+        // F = .5kv^2
+        const F32 force_drag = .5*behavior_drag*velocity_joint_local*velocity_joint_local*llsgn(velocity_joint_local);
+
+        const F32 force_net = (force_accel + 
+                               force_gravity +
+                               force_spring + 
+                               force_damping + 
+                               force_drag);
+
+        //
+        // End total force
+        ////////////////////////////////////////////////////////////////////////////////
+
+        
+        ////////////////////////////////////////////////////////////////////////////////
+        // Calculate new params
+        //
+
+        // Calculate the new acceleration based on the net force.
+        // a = F/m
+        const F32 acceleration_new_local = force_net / behavior_mass;
+        static const F32 max_acceleration = 10.0f; // magic number, used to be customizable.
+        F32 velocity_new_local = mVelocity_local + acceleration_new_local;
+        velocity_new_local = llclamp(velocity_new_local, 
+                                     -max_acceleration, max_acceleration);
+        
+        // Temporary debugging setting to cause all avatars to move, for profiling purposes.
+        if (physics_test)
+        {
+                velocity_new_local = sin(time*4.0);
+        }
+        // Calculate the new parameters, or remain unchanged if max speed is 0.
+        F32 position_new_local = position_current_local + velocity_new_local*time_delta;
+        if (behavior_maxeffect == 0)
+            position_new_local = position_user_local;
+
+        // Zero out the velocity if the param is being pushed beyond its limits.
+        if ((position_new_local < min_val && velocity_new_local < 0) || 
+            (position_new_local > max_val && velocity_new_local > 0))
+        {
+                velocity_new_local = 0;
+        }
+
+	// Check for NaN values.  A NaN value is detected if the variables doesn't equal itself.  
+	// If NaN, then reset everything.
+	if ((mPosition_local != mPosition_local) ||
+	    (mVelocity_local != mVelocity_local) ||
+	    (position_new_local != position_new_local))
+	{
+		position_new_local = 0;
+		position_current_local = 0;
+		position_user_local = 0;
+		mVelocity_local = 0;
+		mVelocityJoint_local = 0;
+		mAccelerationJoint_local = 0;
+		mPosition_local = 0;
+		mPosition_world = LLVector3(0,0,0);
+	}
+
+        const F32 position_new_local_clamped = llclamp(position_new_local,
+						       min_val,
+						       max_val);
+
+        LLDriverParam *driver_param = dynamic_cast<LLDriverParam *>(mParamDriver);
+        llassert_always(driver_param);
+        if (driver_param)
+        {
+                // If this is one of our "hidden" driver params, then make sure it's
+                // the default value.
+                if ((driver_param->getGroup() != VISUAL_PARAM_GROUP_TWEAKABLE) &&
+                    (driver_param->getGroup() != VISUAL_PARAM_GROUP_TWEAKABLE_NO_TRANSMIT))
+                {
+                        mCharacter->setVisualParamWeight(driver_param,
+                                                         0,
+                                                         FALSE);
+                }
+                for (LLDriverParam::entry_list_t::iterator iter = driver_param->mDriven.begin();
+                     iter != driver_param->mDriven.end();
+                     ++iter)
+                {
+                        LLDrivenEntry &entry = (*iter);
+                        LLViewerVisualParam *driven_param = entry.mParam;
+                        setParamValue(driven_param,position_new_local_clamped);
+                }
+        }
+        
+        //
+        // End calculate new params
+        ////////////////////////////////////////////////////////////////////////////////
+
+        ////////////////////////////////////////////////////////////////////////////////
+        // Conditionally update the visual params
+        //
+        
+        // Updating the visual params (i.e. what the user sees) is fairly expensive.
+        // So only update if the params have changed enough, and also take into account
+        // the graphics LOD settings.
+        
+        BOOL update_visuals = FALSE;
+
+        // For non-self, if the avatar is small enough visually, then don't update.
+        const F32 area_for_max_settings = 0.0;
+        const F32 area_for_min_settings = 1400.0;
+        const F32 area_for_this_setting = area_for_max_settings + (area_for_min_settings-area_for_max_settings)*(1.0-lod_factor);
+        const F32 pixel_area = fsqrtf(mCharacter->getPixelArea());
+        
+        const BOOL is_self = (dynamic_cast<LLVOAvatarSelf *>(mCharacter) != NULL);
+        if ((pixel_area > area_for_this_setting) || is_self)
+        {
+                const F32 position_diff_local = llabs(mPositionLastUpdate_local-position_new_local_clamped);
+                const F32 min_delta = (1.01f-lod_factor)*0.4f;
+                if (llabs(position_diff_local) > min_delta)
+                {
+                        update_visuals = TRUE;
+                        mPositionLastUpdate_local = position_new_local;
+                }
+        }
+
+        //
+        // End update visual params
+        ////////////////////////////////////////////////////////////////////////////////
+
+        mVelocityJoint_local = velocity_joint_local;
+
+        mVelocity_local = velocity_new_local;
+        mAccelerationJoint_local = acceleration_joint_local;
+        mPosition_local = position_new_local;
+
+        mPosition_world = joint->getWorldPosition();
+        mLastTime = time;
+
+        /*
+          // Write out debugging info into a spreadsheet.
+          if (mFileWrite != NULL && is_self)
+          {
+          fprintf(mFileWrite,"%f\t%f\t%f \t\t%f \t\t%f\t%f\t%f\t \t\t%f\t%f\t%f\t%f\t%f \t\t%f\t%f\t%f\n",
+          position_new_local,
+          velocity_new_local,
+          acceleration_new_local,
+
+          time_delta,
+
+          mPosition_world[0],
+          mPosition_world[1],
+          mPosition_world[2],
+
+          force_net,
+          force_spring,
+          force_accel,
+          force_damping,
+          force_drag,
+
+          spring_length,
+          velocity_joint_local,
+          acceleration_joint_local
+          );
+          }
+        */
+
+        return update_visuals;
+}
+
+// Range of new_value_local is assumed to be [0 , 1] normalized.
+void LLPhysicsMotion::setParamValue(LLViewerVisualParam *param,
+                                    F32 new_value_normalized)
+{
+        const F32 value_min_local = param->getMinWeight();
+        const F32 value_max_local = param->getMaxWeight();
+
+        const F32 new_value_local = value_min_local + (value_max_local-value_min_local) * new_value_normalized;
+
+        mCharacter->setVisualParamWeight(param,
+                                         new_value_local,
+                                         FALSE);
+}
diff --git a/indra/newview/llphysicsmotion.h b/indra/newview/llphysicsmotion.h
index 0c0087d269..657698e4f2 100644
--- a/indra/newview/llphysicsmotion.h
+++ b/indra/newview/llphysicsmotion.h
@@ -1,124 +1,124 @@
-/** 

- * @file llphysicsmotion.h

- * @brief Implementation of LLPhysicsMotion class.

- *

- * $LicenseInfo:firstyear=2001&license=viewergpl$

- * 

- * Copyright (c) 2001-2009, Linden Research, Inc.

- * 

- * Second Life Viewer Source Code

- * The source code in this file ("Source Code") is provided by Linden Lab

- * to you under the terms of the GNU General Public License, version 2.0

- * ("GPL"), unless you have obtained a separate licensing agreement

- * ("Other License"), formally executed by you and Linden Lab.  Terms of

- * the GPL can be found in doc/GPL-license.txt in this distribution, or

- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2

- * 

- * There are special exceptions to the terms and conditions of the GPL as

- * it is applied to this Source Code. View the full text of the exception

- * in the file doc/FLOSS-exception.txt in this software distribution, or

- * online at

- * http://secondlifegrid.net/programs/open_source/licensing/flossexception

- * 

- * By copying, modifying or distributing this software, you acknowledge

- * that you have read and understood your obligations described above,

- * and agree to abide by those obligations.

- * 

- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO

- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,

- * COMPLETENESS OR PERFORMANCE.

- * $/LicenseInfo$

- */

-

-#ifndef LL_LLPHYSICSMOTIONCONTROLLER_H

-#define LL_LLPHYSICSMOTIONCONTROLLER_H

-

-//-----------------------------------------------------------------------------

-// Header files

-//-----------------------------------------------------------------------------

-#include "llmotion.h"

-#include "llframetimer.h"

-

-#define PHYSICS_MOTION_FADEIN_TIME 1.0f

-#define PHYSICS_MOTION_FADEOUT_TIME 1.0f

-

-class LLPhysicsMotion;

-

-//-----------------------------------------------------------------------------

-// class LLPhysicsMotion

-//-----------------------------------------------------------------------------

-class LLPhysicsMotionController :

-	public LLMotion

-{

-public:

-	// Constructor

-	LLPhysicsMotionController(const LLUUID &id);

-

-	// Destructor

-	virtual ~LLPhysicsMotionController();

-

-public:

-	//-------------------------------------------------------------------------

-	// functions to support MotionController and MotionRegistry

-	//-------------------------------------------------------------------------

-

-	// static constructor

-	// all subclasses must implement such a function and register it

-	static LLMotion *create(const LLUUID &id) { return new LLPhysicsMotionController(id); }

-

-public:

-	//-------------------------------------------------------------------------

-	// animation callbacks to be implemented by subclasses

-	//-------------------------------------------------------------------------

-

-	// motions must specify whether or not they loop

-	virtual BOOL getLoop() { return TRUE; }

-

-	// motions must report their total duration

-	virtual F32 getDuration() { return 0.0; }

-

-	// motions must report their "ease in" duration

-	virtual F32 getEaseInDuration() { return PHYSICS_MOTION_FADEIN_TIME; }

-

-	// motions must report their "ease out" duration.

-	virtual F32 getEaseOutDuration() { return PHYSICS_MOTION_FADEOUT_TIME; }

-

-	// called to determine when a motion should be activated/deactivated based on avatar pixel coverage

-	virtual F32 getMinPixelArea();

-

-	// motions must report their priority

-	virtual LLJoint::JointPriority getPriority() { return LLJoint::MEDIUM_PRIORITY; }

-

-	virtual LLMotionBlendType getBlendType() { return ADDITIVE_BLEND; }

-

-	// run-time (post constructor) initialization,

-	// called after parameters have been set

-	// must return true to indicate success and be available for activation

-	virtual LLMotionInitStatus onInitialize(LLCharacter *character);

-

-	// called when a motion is activated

-	// must return TRUE to indicate success, or else

-	// it will be deactivated

-	virtual BOOL onActivate();

-

-	// called per time step

-	// must return TRUE while it is active, and

-	// must return FALSE when the motion is completed.

-	virtual BOOL onUpdate(F32 time, U8* joint_mask);

-

-	// called when a motion is deactivated

-	virtual void onDeactivate();

-

-	LLCharacter* getCharacter() { return mCharacter; }

-

-protected:

-	void addMotion(LLPhysicsMotion *motion);

-private:

-	LLCharacter*		mCharacter;

-

-	typedef std::vector<LLPhysicsMotion *> motion_vec_t;

-	motion_vec_t mMotions;

-};

-

-#endif // LL_LLPHYSICSMOTION_H

-

+/** 
+ * @file llphysicsmotion.h
+ * @brief Implementation of LLPhysicsMotion class.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * Copyright (c) 2001-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLPHYSICSMOTIONCONTROLLER_H
+#define LL_LLPHYSICSMOTIONCONTROLLER_H
+
+//-----------------------------------------------------------------------------
+// Header files
+//-----------------------------------------------------------------------------
+#include "llmotion.h"
+#include "llframetimer.h"
+
+#define PHYSICS_MOTION_FADEIN_TIME 1.0f
+#define PHYSICS_MOTION_FADEOUT_TIME 1.0f
+
+class LLPhysicsMotion;
+
+//-----------------------------------------------------------------------------
+// class LLPhysicsMotion
+//-----------------------------------------------------------------------------
+class LLPhysicsMotionController :
+	public LLMotion
+{
+public:
+	// Constructor
+	LLPhysicsMotionController(const LLUUID &id);
+
+	// Destructor
+	virtual ~LLPhysicsMotionController();
+
+public:
+	//-------------------------------------------------------------------------
+	// functions to support MotionController and MotionRegistry
+	//-------------------------------------------------------------------------
+
+	// static constructor
+	// all subclasses must implement such a function and register it
+	static LLMotion *create(const LLUUID &id) { return new LLPhysicsMotionController(id); }
+
+public:
+	//-------------------------------------------------------------------------
+	// animation callbacks to be implemented by subclasses
+	//-------------------------------------------------------------------------
+
+	// motions must specify whether or not they loop
+	virtual BOOL getLoop() { return TRUE; }
+
+	// motions must report their total duration
+	virtual F32 getDuration() { return 0.0; }
+
+	// motions must report their "ease in" duration
+	virtual F32 getEaseInDuration() { return PHYSICS_MOTION_FADEIN_TIME; }
+
+	// motions must report their "ease out" duration.
+	virtual F32 getEaseOutDuration() { return PHYSICS_MOTION_FADEOUT_TIME; }
+
+	// called to determine when a motion should be activated/deactivated based on avatar pixel coverage
+	virtual F32 getMinPixelArea();
+
+	// motions must report their priority
+	virtual LLJoint::JointPriority getPriority() { return LLJoint::MEDIUM_PRIORITY; }
+
+	virtual LLMotionBlendType getBlendType() { return ADDITIVE_BLEND; }
+
+	// run-time (post constructor) initialization,
+	// called after parameters have been set
+	// must return true to indicate success and be available for activation
+	virtual LLMotionInitStatus onInitialize(LLCharacter *character);
+
+	// called when a motion is activated
+	// must return TRUE to indicate success, or else
+	// it will be deactivated
+	virtual BOOL onActivate();
+
+	// called per time step
+	// must return TRUE while it is active, and
+	// must return FALSE when the motion is completed.
+	virtual BOOL onUpdate(F32 time, U8* joint_mask);
+
+	// called when a motion is deactivated
+	virtual void onDeactivate();
+
+	LLCharacter* getCharacter() { return mCharacter; }
+
+protected:
+	void addMotion(LLPhysicsMotion *motion);
+private:
+	LLCharacter*		mCharacter;
+
+	typedef std::vector<LLPhysicsMotion *> motion_vec_t;
+	motion_vec_t mMotions;
+};
+
+#endif // LL_LLPHYSICSMOTION_H
+
diff --git a/indra/newview/llselectmgr.cpp b/indra/newview/llselectmgr.cpp
index 50bc0b4a98..87a2008e2b 100644
--- a/indra/newview/llselectmgr.cpp
+++ b/indra/newview/llselectmgr.cpp
@@ -517,17 +517,15 @@ BOOL LLSelectMgr::removeObjectFromSelections(const LLUUID &id)
 {
 	BOOL object_found = FALSE;
 	LLTool *tool = NULL;
-	if (!gNoRender)
-	{
-		tool = LLToolMgr::getInstance()->getCurrentTool();
 
-		// It's possible that the tool is editing an object that is not selected
-		LLViewerObject* tool_editing_object = tool->getEditingObject();
-		if( tool_editing_object && tool_editing_object->mID == id)
-		{
-			tool->stopEditing();
-			object_found = TRUE;
-		}
+	tool = LLToolMgr::getInstance()->getCurrentTool();
+
+	// It's possible that the tool is editing an object that is not selected
+	LLViewerObject* tool_editing_object = tool->getEditingObject();
+	if( tool_editing_object && tool_editing_object->mID == id)
+	{
+		tool->stopEditing();
+		object_found = TRUE;
 	}
 
 	// Iterate through selected objects list and kill the object
diff --git a/indra/newview/llsidetray.cpp b/indra/newview/llsidetray.cpp
index fcd200d24a..4f18ee1da2 100644
--- a/indra/newview/llsidetray.cpp
+++ b/indra/newview/llsidetray.cpp
@@ -53,6 +53,8 @@
 
 #include "llsidepanelappearance.h"
 
+#include "llsidetraylistener.h"
+
 //#include "llscrollcontainer.h"
 
 using namespace std;
@@ -71,6 +73,8 @@ static const std::string TAB_PANEL_CAPTION_TITLE_BOX = "sidetray_tab_title";
 
 LLSideTray* LLSideTray::sInstance = 0;
 
+static LLSideTrayListener sSideTrayListener(LLSideTray::getInstance);
+
 // static
 LLSideTray* LLSideTray::getInstance()
 {
@@ -454,6 +458,11 @@ LLSideTrayTab*  LLSideTrayTab::createInstance	()
 	return tab;
 }
 
+// Now that we know the definition of LLSideTrayTab, we can implement
+// tab_cast.
+template <>
+LLPanel* tab_cast<LLPanel*>(LLSideTrayTab* tab) { return tab; }
+
 //////////////////////////////////////////////////////////////////////////////
 // LLSideTrayButton
 // Side Tray tab button with "tear off" handling.
@@ -567,6 +576,8 @@ LLSideTray::LLSideTray(const Params& params)
 	// register handler function to process data from the xml. 
 	// panel_name should be specified via "parameter" attribute.
 	commit.add("SideTray.ShowPanel", boost::bind(&LLSideTray::showPanel, this, _2, LLUUID::null));
+	commit.add("SideTray.Toggle", boost::bind(&LLSideTray::onToggleCollapse, this));
+	commit.add("SideTray.Collapse", boost::bind(&LLSideTray::collapseSideBar, this));
 	LLTransientFloaterMgr::getInstance()->addControlView(this);
 	LLView* side_bar_tabs  = gViewerWindow->getRootView()->getChildView("side_bar_tabs");
 	if (side_bar_tabs != NULL)
diff --git a/indra/newview/llsidetray.h b/indra/newview/llsidetray.h
index 2516b5689f..1dddd9e9bc 100644
--- a/indra/newview/llsidetray.h
+++ b/indra/newview/llsidetray.h
@@ -33,6 +33,13 @@
 class LLAccordionCtrl;
 class LLSideTrayTab;
 
+// Deal with LLSideTrayTab being opaque. Generic do-nothing cast...
+template <class T>
+T tab_cast(LLSideTrayTab* tab) { return tab; }
+// specialized for implementation in presence of LLSideTrayTab definition
+template <>
+LLPanel* tab_cast<LLPanel*>(LLSideTrayTab* tab);
+
 // added inheritance from LLDestroyClass<LLSideTray> to enable Side Tray perform necessary actions 
 // while disconnecting viewer in LLAppViewer::disconnectViewer().
 // LLDestroyClassList::instance().fireCallbacks() calls destroyClass method. See EXT-245.
@@ -221,6 +228,9 @@ private:
 	}
 
 private:
+	// Since we provide no public way to query mTabs and mDetachedTabs, give
+	// LLSideTrayListener friend access.
+	friend class LLSideTrayListener;
 	LLPanel*						mButtonsPanel;
 	typedef std::map<std::string,LLButton*> button_map_t;
 	button_map_t					mTabButtons;
diff --git a/indra/newview/llsidetraylistener.cpp b/indra/newview/llsidetraylistener.cpp
new file mode 100644
index 0000000000..6db13e517d
--- /dev/null
+++ b/indra/newview/llsidetraylistener.cpp
@@ -0,0 +1,162 @@
+/**
+ * @file   llsidetraylistener.cpp
+ * @author Nat Goodspeed
+ * @date   2011-02-15
+ * @brief  Implementation for llsidetraylistener.
+ * 
+ * $LicenseInfo:firstyear=2011&license=lgpl$
+ * Copyright (c) 2011, Linden Research, Inc.
+ * $/LicenseInfo$
+ */
+
+// Precompiled header
+#include "llviewerprecompiledheaders.h"
+// associated header
+#include "llsidetraylistener.h"
+// STL headers
+// std headers
+// external library headers
+// other Linden headers
+#include "llsidetray.h"
+#include "llsdutil.h"
+
+LLSideTrayListener::LLSideTrayListener(const Getter& getter):
+    LLEventAPI("LLSideTray",
+               "Operations on side tray (e.g. query state, query tabs)"),
+    mGetter(getter)
+{
+    add("getCollapsed", "Send on [\"reply\"] an [\"open\"] Boolean",
+        &LLSideTrayListener::getCollapsed, LLSDMap("reply", LLSD()));
+    add("getTabs",
+        "Send on [\"reply\"] a map of tab names and info about them",
+        &LLSideTrayListener::getTabs, LLSDMap("reply", LLSD()));
+    add("getPanels",
+        "Send on [\"reply\"] data about panels available with SideTray.ShowPanel",
+        &LLSideTrayListener::getPanels, LLSDMap("reply", LLSD()));
+}
+
+void LLSideTrayListener::getCollapsed(const LLSD& event) const
+{
+    sendReply(LLSDMap("open", ! mGetter()->getCollapsed()), event);
+}
+
+void LLSideTrayListener::getTabs(const LLSD& event) const
+{
+    LLSD reply;
+
+    LLSideTray* tray = mGetter();
+    LLSD::Integer ord(0);
+    for (LLSideTray::child_list_const_iter_t chi(tray->beginChild()), chend(tray->endChild());
+         chi != chend; ++chi, ++ord)
+    {
+        LLView* child = *chi;
+        // How much info is important? Toss in as much as seems reasonable for
+        // each tab. But to me, at least for the moment, the most important
+        // item is the tab name.
+        LLSD info;
+        // I like the idea of returning a map keyed by tab name. But as
+        // compared to an array of maps, that loses sequence information.
+        // Address that by indicating the original order in each map entry.
+        info["ord"] = ord;
+        info["visible"] = bool(child->getVisible());
+        info["enabled"] = bool(child->getEnabled());
+        info["available"] = child->isAvailable();
+        reply[child->getName()] = info;
+    }
+
+    sendReply(reply, event);
+}
+
+static LLSD getTabInfo(LLPanel* tab)
+{
+    LLSD panels;
+    for (LLPanel::tree_iterator_t ti(tab->beginTreeDFS()), tend(tab->endTreeDFS());
+         ti != tend; ++ti)
+    {
+        // *ti is actually an LLView*, which had better not be NULL
+        LLView* view(*ti);
+        if (! view)
+        {
+            LL_ERRS("LLSideTrayListener") << "LLSideTrayTab '" << tab->getName()
+                                          << "' has a NULL child LLView*" << LL_ENDL;
+        }
+
+        // The logic we use to decide what "panel" names to return is heavily
+        // based on LLSideTray::showPanel(): the function that actually
+        // implements the "SideTray.ShowPanel" operation. showPanel(), in
+        // turn, depends on LLSideTray::openChildPanel(): when
+        // openChildPanel() returns non-NULL, showPanel() stops searching
+        // attached and detached LLSideTrayTab tabs.
+
+        // For each LLSideTrayTab, openChildPanel() first calls
+        // findChildView(panel_name, true). In other words, panel_name need
+        // not be a direct LLSideTrayTab child, it's sought recursively.
+        // That's why we use (begin|end)TreeDFS() in this loop.
+
+        // But this tree_iterator_t loop will actually traverse every widget
+        // in every panel. Returning all those names will not help our caller:
+        // passing most such names to openChildPanel() would not do what we
+        // want. Even though the code suggests that passing ANY valid
+        // side-panel widget name to openChildPanel() will open the tab
+        // containing that widget, results could get confusing since followup
+        // (onOpen()) logic wouldn't be invoked, and showPanel() wouldn't stop
+        // searching because openChildPanel() would return NULL.
+
+        // We must filter these LLView items, using logic that (sigh!) mirrors
+        // openChildPanel()'s own.
+
+        // openChildPanel() returns a non-NULL LLPanel* when either:
+        // - the LLView is a direct child of an LLSideTrayPanelContainer
+        // - the LLView is itself an LLPanel.
+        // But as LLSideTrayPanelContainer can directly contain LLView items
+        // that are NOT themselves LLPanels (e.g. "sidebar_me" contains an
+        // LLButton called "Jump Right Arrow"), we'd better focus only on
+        // LLSideTrayPanelContainer children that are themselves LLPanel
+        // items. Which means that the second test completely subsumes the
+        // first.
+        LLPanel* panel(dynamic_cast<LLPanel*>(view));
+        if (panel)
+        {
+            // Maybe it's overkill to construct an LLSD::Map for each panel, but
+            // the possibility remains that we might want to deliver more info
+            // about each panel than just its name.
+            panels.append(LLSDMap("name", panel->getName()));
+        }
+    }
+
+    return LLSDMap("panels", panels);
+}
+
+void LLSideTrayListener::getPanels(const LLSD& event) const
+{
+    LLSD reply;
+
+    LLSideTray* tray = mGetter();
+    // Iterate through the attached tabs.
+    LLSD::Integer ord(0);
+    for (LLSideTray::child_vector_t::const_iterator
+             ati(tray->mTabs.begin()), atend(tray->mTabs.end());
+         ati != atend; ++ati)
+    {
+        // We don't have access to LLSideTrayTab: the class definition is
+        // hidden in llsidetray.cpp. But as LLSideTrayTab isa LLPanel, use the
+        // LLPanel API. Unfortunately, without the LLSideTrayTab definition,
+        // the compiler doesn't even know this LLSideTrayTab* is an LLPanel*.
+        // Persuade it.
+        LLPanel* tab(tab_cast<LLPanel*>(*ati));
+        reply[tab->getName()] = getTabInfo(tab).with("attached", true).with("ord", ord);
+    }
+
+    // Now iterate over the detached tabs. These can also be opened via
+    // SideTray.ShowPanel.
+    ord = 0;
+    for (LLSideTray::child_vector_t::const_iterator
+             dti(tray->mDetachedTabs.begin()), dtend(tray->mDetachedTabs.end());
+         dti != dtend; ++dti)
+    {
+        LLPanel* tab(tab_cast<LLPanel*>(*dti));
+        reply[tab->getName()] = getTabInfo(tab).with("attached", false).with("ord", ord);
+    }
+
+    sendReply(reply, event);
+}
diff --git a/indra/newview/llsidetraylistener.h b/indra/newview/llsidetraylistener.h
new file mode 100644
index 0000000000..0dd2067433
--- /dev/null
+++ b/indra/newview/llsidetraylistener.h
@@ -0,0 +1,36 @@
+/**
+ * @file   llsidetraylistener.h
+ * @author Nat Goodspeed
+ * @date   2011-02-15
+ * @brief  
+ * 
+ * $LicenseInfo:firstyear=2011&license=lgpl$
+ * Copyright (c) 2011, Linden Research, Inc.
+ * $/LicenseInfo$
+ */
+
+#if ! defined(LL_LLSIDETRAYLISTENER_H)
+#define LL_LLSIDETRAYLISTENER_H
+
+#include "lleventapi.h"
+#include <boost/function.hpp>
+
+class LLSideTray;
+class LLSD;
+
+class LLSideTrayListener: public LLEventAPI
+{
+    typedef boost::function<LLSideTray*()> Getter;
+
+public:
+    LLSideTrayListener(const Getter& getter);
+
+private:
+    void getCollapsed(const LLSD& event) const;
+    void getTabs(const LLSD& event) const;
+    void getPanels(const LLSD& event) const;
+
+    Getter mGetter;
+};
+
+#endif /* ! defined(LL_LLSIDETRAYLISTENER_H) */
diff --git a/indra/newview/llstartup.cpp b/indra/newview/llstartup.cpp
index 8fccb35886..ffad2f6882 100644
--- a/indra/newview/llstartup.cpp
+++ b/indra/newview/llstartup.cpp
@@ -354,11 +354,8 @@ bool idle_startup()
 
 	LLStringUtil::setLocale (LLTrans::getString(system));
 
-	if (!gNoRender)
-	{
-		//note: Removing this line will cause incorrect button size in the login screen. -- bao.
-		gTextureList.updateImages(0.01f) ;
-	}
+	//note: Removing this line will cause incorrect button size in the login screen. -- bao.
+	gTextureList.updateImages(0.01f) ;
 
 	if ( STATE_FIRST == LLStartUp::getStartupState() )
 	{
@@ -673,6 +670,7 @@ bool idle_startup()
 		{
 			gUserCredential = gLoginHandler.initializeLoginInfo();
 		}
+		// Previous initializeLoginInfo may have generated user credentials.  Re-check them.
 		if (gUserCredential.isNull())
 		{
 			show_connect_box = TRUE;
@@ -731,9 +729,9 @@ bool idle_startup()
 			{                                                                                                      
 				gUserCredential = gLoginHandler.initializeLoginInfo();                 
 			}     
-			if (gNoRender)
+			if (gHeadlessClient)
 			{
-				LL_ERRS("AppInit") << "Need to autologin or use command line with norender!" << LL_ENDL;
+				LL_WARNS("AppInit") << "Waiting at connection box in headless client.  Did you mean to add autologin params?" << LL_ENDL;
 			}
 			// Make sure the process dialog doesn't hide things
 			gViewerWindow->setShowProgress(FALSE);
@@ -940,10 +938,7 @@ bool idle_startup()
 
 		gViewerWindow->getWindow()->setCursor(UI_CURSOR_WAIT);
 
-		if (!gNoRender)
-		{
-			init_start_screen(agent_location_id);
-		}
+		init_start_screen(agent_location_id);
 
 		// Display the startup progress bar.
 		gViewerWindow->setShowProgress(TRUE);
@@ -974,11 +969,6 @@ bool idle_startup()
 		// Setting initial values...
 		LLLoginInstance* login = LLLoginInstance::getInstance();
 		login->setNotificationsInterface(LLNotifications::getInstance());
-		if(gNoRender)
-		{
-			// HACK, skip optional updates if you're running drones
-			login->setSkipOptionalUpdate(true);
-		}
 
 		login->setSerialNumber(LLAppViewer::instance()->getSerialNumber());
 		login->setLastExecEvent(gLastExecEvent);
@@ -1264,14 +1254,11 @@ bool idle_startup()
 		gLoginMenuBarView->setVisible( FALSE );
 		gLoginMenuBarView->setEnabled( FALSE );
 
-		if (!gNoRender)
-		{
-			// direct logging to the debug console's line buffer
-			LLError::logToFixedBuffer(gDebugView->mDebugConsolep);
-			
-			// set initial visibility of debug console
-			gDebugView->mDebugConsolep->setVisible(gSavedSettings.getBOOL("ShowDebugConsole"));
-		}
+		// direct logging to the debug console's line buffer
+		LLError::logToFixedBuffer(gDebugView->mDebugConsolep);
+		
+		// set initial visibility of debug console
+		gDebugView->mDebugConsolep->setVisible(gSavedSettings.getBOOL("ShowDebugConsole"));
 
 		//
 		// Set message handlers
@@ -1299,7 +1286,7 @@ bool idle_startup()
 
 		//gCacheName is required for nearby chat history loading
 		//so I just moved nearby history loading a few states further
-		if (!gNoRender && gSavedPerAccountSettings.getBOOL("LogShowHistory"))
+		if (gSavedPerAccountSettings.getBOOL("LogShowHistory"))
 		{
 			LLNearbyChat* nearby_chat = LLNearbyChat::getInstance();
 			if (nearby_chat) nearby_chat->loadHistory();
@@ -1351,18 +1338,15 @@ bool idle_startup()
 		gAgentCamera.resetCamera();
 
 		// Initialize global class data needed for surfaces (i.e. textures)
-		if (!gNoRender)
-		{
-			LL_DEBUGS("AppInit") << "Initializing sky..." << LL_ENDL;
-			// Initialize all of the viewer object classes for the first time (doing things like texture fetches.
-			LLGLState::checkStates();
-			LLGLState::checkTextureChannels();
+		LL_DEBUGS("AppInit") << "Initializing sky..." << LL_ENDL;
+		// Initialize all of the viewer object classes for the first time (doing things like texture fetches.
+		LLGLState::checkStates();
+		LLGLState::checkTextureChannels();
 
-			gSky.init(initial_sun_direction);
+		gSky.init(initial_sun_direction);
 
-			LLGLState::checkStates();
-			LLGLState::checkTextureChannels();
-		}
+		LLGLState::checkStates();
+		LLGLState::checkTextureChannels();
 
 		LL_DEBUGS("AppInit") << "Decoding images..." << LL_ENDL;
 		// For all images pre-loaded into viewer cache, decode them.
@@ -1722,46 +1706,43 @@ bool idle_startup()
 			LLUIColorTable::instance().saveUserSettings();
 		};
 
-		if (!gNoRender)
-		{
-			// JC: Initializing audio requests many sounds for download.
-			init_audio();
-
-			// JC: Initialize "active" gestures.  This may also trigger
-			// many gesture downloads, if this is the user's first
-			// time on this machine or -purge has been run.
-			LLSD gesture_options 
-				= LLLoginInstance::getInstance()->getResponse("gestures");
-			if (gesture_options.isDefined())
+		// JC: Initializing audio requests many sounds for download.
+		init_audio();
+
+		// JC: Initialize "active" gestures.  This may also trigger
+		// many gesture downloads, if this is the user's first
+		// time on this machine or -purge has been run.
+		LLSD gesture_options 
+			= LLLoginInstance::getInstance()->getResponse("gestures");
+		if (gesture_options.isDefined())
+		{
+			LL_DEBUGS("AppInit") << "Gesture Manager loading " << gesture_options.size()
+				<< LL_ENDL;
+			uuid_vec_t item_ids;
+			for(LLSD::array_const_iterator resp_it = gesture_options.beginArray(),
+				end = gesture_options.endArray(); resp_it != end; ++resp_it)
 			{
-				LL_DEBUGS("AppInit") << "Gesture Manager loading " << gesture_options.size()
-					<< LL_ENDL;
-				uuid_vec_t item_ids;
-				for(LLSD::array_const_iterator resp_it = gesture_options.beginArray(),
-					end = gesture_options.endArray(); resp_it != end; ++resp_it)
-				{
-					// If the id is not specifed in the LLSD,
-					// the LLSD operator[]() will return a null LLUUID. 
-					LLUUID item_id = (*resp_it)["item_id"];
-					LLUUID asset_id = (*resp_it)["asset_id"];
+				// If the id is not specifed in the LLSD,
+				// the LLSD operator[]() will return a null LLUUID. 
+				LLUUID item_id = (*resp_it)["item_id"];
+				LLUUID asset_id = (*resp_it)["asset_id"];
 
-					if (item_id.notNull() && asset_id.notNull())
-					{
-						// Could schedule and delay these for later.
-						const BOOL no_inform_server = FALSE;
-						const BOOL no_deactivate_similar = FALSE;
-						LLGestureMgr::instance().activateGestureWithAsset(item_id, asset_id,
-											 no_inform_server,
-											 no_deactivate_similar);
-						// We need to fetch the inventory items for these gestures
-						// so we have the names to populate the UI.
-						item_ids.push_back(item_id);
-					}
+				if (item_id.notNull() && asset_id.notNull())
+				{
+					// Could schedule and delay these for later.
+					const BOOL no_inform_server = FALSE;
+					const BOOL no_deactivate_similar = FALSE;
+					LLGestureMgr::instance().activateGestureWithAsset(item_id, asset_id,
+										 no_inform_server,
+										 no_deactivate_similar);
+					// We need to fetch the inventory items for these gestures
+					// so we have the names to populate the UI.
+					item_ids.push_back(item_id);
 				}
-				// no need to add gesture to inventory observer, it's already made in constructor 
-				LLGestureMgr::instance().setFetchIDs(item_ids);
-				LLGestureMgr::instance().startFetch();
 			}
+			// no need to add gesture to inventory observer, it's already made in constructor 
+			LLGestureMgr::instance().setFetchIDs(item_ids);
+			LLGestureMgr::instance().startFetch();
 		}
 		gDisplaySwapBuffers = TRUE;
 
@@ -1782,13 +1763,6 @@ bool idle_startup()
 		// JC - 7/20/2002
 		gViewerWindow->sendShapeToSim();
 
-		
-		// Ignore stipend information for now.  Money history is on the web site.
-		// if needed, show the L$ history window
-		//if (stipend_since_login && !gNoRender)
-		//{
-		//}
-
 		// The reason we show the alert is because we want to
 		// reduce confusion for when you log in and your provided
 		// location is not your expected location. So, if this is
@@ -3214,7 +3188,7 @@ bool process_login_success_response()
 
 void transition_back_to_login_panel(const std::string& emsg)
 {
-	if (gNoRender)
+	if (gHeadlessClient && gSavedSettings.getBOOL("AutoLogin"))
 	{
 		LL_WARNS("AppInit") << "Failed to login!" << LL_ENDL;
 		LL_WARNS("AppInit") << emsg << LL_ENDL;
diff --git a/indra/newview/llsurface.cpp b/indra/newview/llsurface.cpp
index 6fc8153b77..bccabe21a8 100644
--- a/indra/newview/llsurface.cpp
+++ b/indra/newview/llsurface.cpp
@@ -340,11 +340,6 @@ void LLSurface::connectNeighbor(LLSurface *neighborp, U32 direction)
 	S32 i;
 	LLSurfacePatch *patchp, *neighbor_patchp;
 
-	if (gNoRender)
-	{
-		return;
-	}
-
 	mNeighbors[direction] = neighborp;
 	neighborp->mNeighbors[gDirOpposite[direction]] = this;
 
diff --git a/indra/newview/lltexturestats.cpp b/indra/newview/lltexturestats.cpp
index dd35d5cf83..f820ae65df 100644
--- a/indra/newview/lltexturestats.cpp
+++ b/indra/newview/lltexturestats.cpp
@@ -37,7 +37,7 @@ void send_texture_stats_to_sim(const LLSD &texture_stats)
 {
 	LLSD texture_stats_report;
 	// Only send stats if the agent is connected to a region.
-	if (!gAgent.getRegion() || gNoRender)
+	if (!gAgent.getRegion())
 	{
 		return;
 	}
diff --git a/indra/newview/lluilistener.cpp b/indra/newview/lluilistener.cpp
index 4d6eac4958..6b2cd71d40 100644
--- a/indra/newview/lluilistener.cpp
+++ b/indra/newview/lluilistener.cpp
@@ -34,9 +34,11 @@
 // std headers
 // external library headers
 // other Linden headers
+#include "llui.h" // getRootView(), resolvePath()
 #include "lluictrl.h"
 #include "llerror.h"
 
+
 LLUIListener::LLUIListener():
     LLEventAPI("UI",
                "LLUICtrl::CommitCallbackRegistry listener.\n"
@@ -47,6 +49,12 @@ LLUIListener::LLUIListener():
         "as if from a user gesture on a menu -- or a button click.",
         &LLUIListener::call,
         LLSD().with("function", LLSD()));
+
+    add("getValue",
+        "For the UI control identified by the path in [\"path\"], return the control's\n"
+        "current value as [\"value\"] reply.",
+        &LLUIListener::getValue,
+        LLSDMap("path", LLSD())("reply", LLSD()));
 }
 
 void LLUIListener::call(const LLSD& event) const
@@ -71,3 +79,23 @@ void LLUIListener::call(const LLSD& event) const
         (*func)(NULL, event["parameter"]);
     }
 }
+
+void LLUIListener::getValue(const LLSD&event) const
+{
+    LLSD reply = LLSD::emptyMap();
+
+    const LLView* root = LLUI::getRootView();
+    const LLView* view = LLUI::resolvePath(root, event["path"].asString());
+    const LLUICtrl* ctrl(dynamic_cast<const LLUICtrl*>(view));
+
+    if (ctrl) 
+    {
+        reply["value"] = ctrl->getValue();
+    }
+    else
+    {
+        // *TODO: ??? return something indicating failure to resolve
+    }
+    
+    sendReply(reply, event);
+}
diff --git a/indra/newview/lluilistener.h b/indra/newview/lluilistener.h
index e7847f01e8..08724024dc 100644
--- a/indra/newview/lluilistener.h
+++ b/indra/newview/lluilistener.h
@@ -41,6 +41,7 @@ public:
 
 private:
     void call(const LLSD& event) const;
+    void getValue(const LLSD&event) const;
 };
 
 #endif /* ! defined(LL_LLUILISTENER_H) */
diff --git a/indra/newview/llviewerdisplay.cpp b/indra/newview/llviewerdisplay.cpp
index 41b7c13826..de8e37b572 100644
--- a/indra/newview/llviewerdisplay.cpp
+++ b/indra/newview/llviewerdisplay.cpp
@@ -115,8 +115,7 @@ void display_startup()
 {
 	if (   !gViewerWindow->getActive()
 		|| !gViewerWindow->mWindow->getVisible() 
-		|| gViewerWindow->mWindow->getMinimized()
-		|| gNoRender )
+		|| gViewerWindow->mWindow->getMinimized() )
 	{
 		return; 
 	}
@@ -294,7 +293,8 @@ void display(BOOL rebuild, F32 zoom_factor, int subfield, BOOL for_snapshot)
 	// Logic for forcing window updates if we're in drone mode.
 	//
 
-	if (gNoRender) 
+	// *TODO: Investigate running display() during gHeadlessClient.  See if this early exit is needed DK 2011-02-18
+	if (gHeadlessClient) 
 	{
 #if LL_WINDOWS
 		static F32 last_update_time = 0.f;
diff --git a/indra/newview/llviewermenu.cpp b/indra/newview/llviewermenu.cpp
index bd46ee1b67..8483f663aa 100644
--- a/indra/newview/llviewermenu.cpp
+++ b/indra/newview/llviewermenu.cpp
@@ -6416,12 +6416,12 @@ class LLToolsSelectedScriptAction : public view_listener_t
 		else if (action == "start")
 		{
 			name = "start_queue";
-			msg = "Running";
+			msg = "SetRunning";
 		}
 		else if (action == "stop")
 		{
 			name = "stop_queue";
-			msg = "RunningNot";
+			msg = "SetRunningNot";
 		}
 		LLUUID id; id.generate();
 		
diff --git a/indra/newview/llviewermessage.cpp b/indra/newview/llviewermessage.cpp
index 8b52d478e6..9641a0901c 100644
--- a/indra/newview/llviewermessage.cpp
+++ b/indra/newview/llviewermessage.cpp
@@ -343,12 +343,6 @@ void process_layer_data(LLMessageSystem *mesgsys, void **user_data)
 {
 	LLViewerRegion *regionp = LLWorld::getInstance()->getRegion(mesgsys->getSender());
 
-	if (!regionp || gNoRender)
-	{
-		return;
-	}
-
-
 	S32 size;
 	S8 type;
 
@@ -2168,10 +2162,6 @@ void god_message_name_cb(const LLAvatarName& av_name, LLChat chat, std::string m
 
 void process_improved_im(LLMessageSystem *msg, void **user_data)
 {
-	if (gNoRender)
-	{
-		return;
-	}
 	LLUUID from_id;
 	BOOL from_group;
 	LLUUID to_id;
@@ -3960,7 +3950,9 @@ void send_agent_update(BOOL force_send, BOOL send_reliable)
 	// LBUTTON and ML_LBUTTON so that using the camera (alt-key) doesn't
 	// trigger a control event.
 	U32 control_flags = gAgent.getControlFlags();
+
 	MASK	key_mask = gKeyboard->currentMask(TRUE);
+
 	if (key_mask & MASK_ALT || key_mask & MASK_CONTROL)
 	{
 		control_flags &= ~(	AGENT_CONTROL_LBUTTON_DOWN |
@@ -4279,7 +4271,7 @@ void process_time_synch(LLMessageSystem *mesgsys, void **user_data)
 
 	gSky.setSunPhase(phase);
 	gSky.setSunTargetDirection(sun_direction, sun_ang_velocity);
-	if (!gNoRender && !(gSavedSettings.getBOOL("SkyOverrideSimSunPosition") || gSky.getOverrideSun()))
+	if ( !(gSavedSettings.getBOOL("SkyOverrideSimSunPosition") || gSky.getOverrideSun()) )
 	{
 		gSky.setSunDirection(sun_direction, sun_ang_velocity);
 	}
@@ -5541,21 +5533,12 @@ time_t								gLastDisplayedTime = 0;
 
 void handle_show_mean_events(void *)
 {
-	if (gNoRender)
-	{
-		return;
-	}
 	LLFloaterReg::showInstance("bumps");
 	//LLFloaterBump::showInstance();
 }
 
 void mean_name_callback(const LLUUID &id, const std::string& full_name, bool is_group)
 {
-	if (gNoRender)
-	{
-		return;
-	}
-
 	static const U32 max_collision_list_size = 20;
 	if (gMeanCollisionList.size() > max_collision_list_size)
 	{
diff --git a/indra/newview/llviewerobject.cpp b/indra/newview/llviewerobject.cpp
index 32cd8dbb39..e8828e63a9 100644
--- a/indra/newview/llviewerobject.cpp
+++ b/indra/newview/llviewerobject.cpp
@@ -469,11 +469,6 @@ void LLViewerObject::initVOClasses()
 	// Initialized shared class stuff first.
 	LLVOAvatar::initClass();
 	LLVOTree::initClass();
-	if (gNoRender)
-	{
-		// Don't init anything else in drone mode
-		return;
-	}
 	llinfos << "Viewer Object size: " << sizeof(LLViewerObject) << llendl;
 	LLVOGrass::initClass();
 	LLVOWater::initClass();
@@ -2150,12 +2145,6 @@ BOOL LLViewerObject::idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time)
 		}
 	}
 
-	if (gNoRender)
-	{
-		// Skip drawable stuff if not rendering.
-		return TRUE;
-	}
-
 	updateDrawable(FALSE);
 
 	return TRUE;
diff --git a/indra/newview/llviewerobjectlist.cpp b/indra/newview/llviewerobjectlist.cpp
index 979d91cfcb..da95bacc41 100644
--- a/indra/newview/llviewerobjectlist.cpp
+++ b/indra/newview/llviewerobjectlist.cpp
@@ -636,19 +636,16 @@ void LLViewerObjectList::updateApparentAngles(LLAgent &agent)
 	}
 
 
-	if (!gNoRender)
+	// Slam priorities for textures that we care about (hovered, selected, and focused)
+	// Hovered
+	// Assumes only one level deep of parenting
+	LLSelectNode* nodep = LLSelectMgr::instance().getHoverNode();
+	if (nodep)
 	{
-		// Slam priorities for textures that we care about (hovered, selected, and focused)
-		// Hovered
-		// Assumes only one level deep of parenting
-		LLSelectNode* nodep = LLSelectMgr::instance().getHoverNode();
-		if (nodep)
+		objectp = nodep->getObject();
+		if (objectp)
 		{
-			objectp = nodep->getObject();
-			if (objectp)
-			{
-				objectp->boostTexturePriority();
-			}
+			objectp->boostTexturePriority();
 		}
 	}
 
@@ -1100,7 +1097,7 @@ void LLViewerObjectList::shiftObjects(const LLVector3 &offset)
 	// We need to update many object caches, I'll document this more as I dig through the code
 	// cleaning things out...
 
-	if (gNoRender || 0 == offset.magVecSquared())
+	if (0 == offset.magVecSquared())
 	{
 		return;
 	}
@@ -1568,11 +1565,6 @@ void LLViewerObjectList::orphanize(LLViewerObject *childp, U32 parent_id, U32 ip
 
 void LLViewerObjectList::findOrphans(LLViewerObject* objectp, U32 ip, U32 port)
 {
-	if (gNoRender)
-	{
-		return;
-	}
-
 	if (objectp->isDead())
 	{
 		llwarns << "Trying to find orphans for dead obj " << objectp->mID 
diff --git a/indra/newview/llviewerparcelmgr.cpp b/indra/newview/llviewerparcelmgr.cpp
index fccd1156d3..e84e4a859a 100644
--- a/indra/newview/llviewerparcelmgr.cpp
+++ b/indra/newview/llviewerparcelmgr.cpp
@@ -1383,11 +1383,6 @@ void LLViewerParcelMgr::setHoverParcel(const LLVector3d& pos)
 // static
 void LLViewerParcelMgr::processParcelOverlay(LLMessageSystem *msg, void **user)
 {
-	if (gNoRender)
-	{
-		return;
-	}
-
 	// Extract the packed overlay information
 	S32 packed_overlay_size = msg->getSizeFast(_PREHASH_ParcelData, _PREHASH_Data);
 
diff --git a/indra/newview/llviewerregion.cpp b/indra/newview/llviewerregion.cpp
index e1d3e8a0b3..8c21e1a409 100644
--- a/indra/newview/llviewerregion.cpp
+++ b/indra/newview/llviewerregion.cpp
@@ -73,8 +73,6 @@
 	#pragma warning(disable:4355)
 #endif
 
-extern BOOL gNoRender;
-
 const F32 WATER_TEXTURE_SCALE = 8.f;			//  Number of times to repeat the water texture across a region
 const S16 MAX_MAP_DIST = 10;
 
@@ -235,28 +233,19 @@ LLViewerRegion::LLViewerRegion(const U64 &handle,
 	updateRenderMatrix();
 
 	mLandp = new LLSurface('l', NULL);
-	if (!gNoRender)
-	{
-		// Create the composition layer for the surface
-		mCompositionp = new LLVLComposition(mLandp, grids_per_region_edge, region_width_meters/grids_per_region_edge);
-		mCompositionp->setSurface(mLandp);
-
-		// Create the surfaces
-		mLandp->setRegion(this);
-		mLandp->create(grids_per_region_edge,
-						grids_per_patch_edge,
-						mOriginGlobal,
-						mWidth);
-	}
 
-	if (!gNoRender)
-	{
-		mParcelOverlay = new LLViewerParcelOverlay(this, region_width_meters);
-	}
-	else
-	{
-		mParcelOverlay = NULL;
-	}
+	// Create the composition layer for the surface
+	mCompositionp = new LLVLComposition(mLandp, grids_per_region_edge, region_width_meters/grids_per_region_edge);
+	mCompositionp->setSurface(mLandp);
+
+	// Create the surfaces
+	mLandp->setRegion(this);
+	mLandp->create(grids_per_region_edge,
+					grids_per_patch_edge,
+					mOriginGlobal,
+					mWidth);
+
+	mParcelOverlay = new LLViewerParcelOverlay(this, region_width_meters);
 
 	setOriginGlobal(from_region_handle(handle));
 	calculateCenterGlobal();
diff --git a/indra/newview/llviewerstats.cpp b/indra/newview/llviewerstats.cpp
index 874519a59f..fa60e572ac 100644
--- a/indra/newview/llviewerstats.cpp
+++ b/indra/newview/llviewerstats.cpp
@@ -711,7 +711,7 @@ void send_stats()
 	// but that day is not today.
 
 	// Only send stats if the agent is connected to a region.
-	if (!gAgent.getRegion() || gNoRender)
+	if (!gAgent.getRegion())
 	{
 		return;
 	}
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index cf7f3f80ad..cc635f71f9 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -1415,61 +1415,59 @@ BOOL LLViewerFetchedTexture::createTexture(S32 usename/*= 0*/)
 // 						mRawImage->getWidth(), mRawImage->getHeight(),mRawImage->getDataSize())
 // 			<< mID.getString() << llendl;
 	BOOL res = TRUE;
-	if (!gNoRender)
-	{
-		// store original size only for locally-sourced images
-		if (mUrl.compare(0, 7, "file://") == 0)
-		{
-			mOrigWidth = mRawImage->getWidth();
-			mOrigHeight = mRawImage->getHeight();
 
-			// leave black border, do not scale image content
-			mRawImage->expandToPowerOfTwo(MAX_IMAGE_SIZE, FALSE);
-			
-			mFullWidth = mRawImage->getWidth();
-			mFullHeight = mRawImage->getHeight();
-			setTexelsPerImage();
-		}
-		else
-		{
-			mOrigWidth = mFullWidth;
-			mOrigHeight = mFullHeight;
-		}
+	// store original size only for locally-sourced images
+	if (mUrl.compare(0, 7, "file://") == 0)
+	{
+		mOrigWidth = mRawImage->getWidth();
+		mOrigHeight = mRawImage->getHeight();
 
-		bool size_okay = true;
+		// leave black border, do not scale image content
+		mRawImage->expandToPowerOfTwo(MAX_IMAGE_SIZE, FALSE);
 		
-		U32 raw_width = mRawImage->getWidth() << mRawDiscardLevel;
-		U32 raw_height = mRawImage->getHeight() << mRawDiscardLevel;
-		if( raw_width > MAX_IMAGE_SIZE || raw_height > MAX_IMAGE_SIZE )
-		{
-			llinfos << "Width or height is greater than " << MAX_IMAGE_SIZE << ": (" << raw_width << "," << raw_height << ")" << llendl;
-			size_okay = false;
-		}
-		
-		if (!LLImageGL::checkSize(mRawImage->getWidth(), mRawImage->getHeight()))
-		{
-			// A non power-of-two image was uploaded (through a non standard client)
-			llinfos << "Non power of two width or height: (" << mRawImage->getWidth() << "," << mRawImage->getHeight() << ")" << llendl;
-			size_okay = false;
-		}
-		
-		if( !size_okay )
-		{
-			// An inappropriately-sized image was uploaded (through a non standard client)
-			// We treat these images as missing assets which causes them to
-			// be renderd as 'missing image' and to stop requesting data
-			setIsMissingAsset();
-			destroyRawImage();
-			return FALSE;
-		}
-		
-		if(!(res = insertToAtlas()))
-		{
-			res = mGLTexturep->createGLTexture(mRawDiscardLevel, mRawImage, usename, TRUE, mBoostLevel);
-			resetFaceAtlas() ;
-		}
-		setActive() ;
+		mFullWidth = mRawImage->getWidth();
+		mFullHeight = mRawImage->getHeight();
+		setTexelsPerImage();
+	}
+	else
+	{
+		mOrigWidth = mFullWidth;
+		mOrigHeight = mFullHeight;
+	}
+
+	bool size_okay = true;
+	
+	U32 raw_width = mRawImage->getWidth() << mRawDiscardLevel;
+	U32 raw_height = mRawImage->getHeight() << mRawDiscardLevel;
+	if( raw_width > MAX_IMAGE_SIZE || raw_height > MAX_IMAGE_SIZE )
+	{
+		llinfos << "Width or height is greater than " << MAX_IMAGE_SIZE << ": (" << raw_width << "," << raw_height << ")" << llendl;
+		size_okay = false;
+	}
+	
+	if (!LLImageGL::checkSize(mRawImage->getWidth(), mRawImage->getHeight()))
+	{
+		// A non power-of-two image was uploaded (through a non standard client)
+		llinfos << "Non power of two width or height: (" << mRawImage->getWidth() << "," << mRawImage->getHeight() << ")" << llendl;
+		size_okay = false;
+	}
+	
+	if( !size_okay )
+	{
+		// An inappropriately-sized image was uploaded (through a non standard client)
+		// We treat these images as missing assets which causes them to
+		// be renderd as 'missing image' and to stop requesting data
+		setIsMissingAsset();
+		destroyRawImage();
+		return FALSE;
+	}
+	
+	if(!(res = insertToAtlas()))
+	{
+		res = mGLTexturep->createGLTexture(mRawDiscardLevel, mRawImage, usename, TRUE, mBoostLevel);
+		resetFaceAtlas() ;
 	}
+	setActive() ;
 
 	if (!mForceToSaveRawImage)
 	{
diff --git a/indra/newview/llviewertexturelist.cpp b/indra/newview/llviewertexturelist.cpp
index 10126219f8..06f6ff23c2 100644
--- a/indra/newview/llviewertexturelist.cpp
+++ b/indra/newview/llviewertexturelist.cpp
@@ -91,11 +91,6 @@ void LLViewerTextureList::init()
 	sNumImages = 0;
 	mMaxResidentTexMemInMegaBytes = 0;
 	mMaxTotalTextureMemInMegaBytes = 0 ;
-	if (gNoRender)
-	{
-		// Don't initialize GL stuff if we're not rendering.
-		return;
-	}
 	
 	mUpdateStats = TRUE;
 	
@@ -345,13 +340,6 @@ LLViewerFetchedTexture* LLViewerTextureList::getImageFromUrl(const std::string&
 												   LLGLenum primary_format, 
 												   const LLUUID& force_id)
 {
-	if (gNoRender)
-	{
-		// Never mind that this ignores image_set_id;
-		// getImage() will handle that later.
-		return LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT, TRUE, LLViewerTexture::BOOST_UI);
-	}
-
 	// generate UUID based on hash of filename
 	LLUUID new_id;
 	if (force_id.notNull())
@@ -741,7 +729,7 @@ static LLFastTimer::DeclareTimer FTM_IMAGE_CREATE("Create Images");
 
 F32 LLViewerTextureList::updateImagesCreateTextures(F32 max_time)
 {
-	if (gNoRender || gGLManager.mIsDisabled) return 0.0f;
+	if (gGLManager.mIsDisabled) return 0.0f;
 	
 	//
 	// Create GL textures for all textures that need them (images which have been
@@ -876,7 +864,6 @@ void LLViewerTextureList::updateImagesUpdateStats()
 void LLViewerTextureList::decodeAllImages(F32 max_time)
 {
 	LLTimer timer;
-	if(gNoRender) return;
 	
 	// Update texture stats and priorities
 	std::vector<LLPointer<LLViewerFetchedTexture> > image_list;
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index 8e049e76df..891e3e8d81 100644
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -1251,8 +1251,9 @@ void LLViewerWindow::handleMenuSelect(LLWindow *window,  S32 menu_item)
 
 BOOL LLViewerWindow::handlePaint(LLWindow *window,  S32 x,  S32 y, S32 width,  S32 height)
 {
+	// *TODO: Enable similar information output for other platforms?  DK 2011-02-18
 #if LL_WINDOWS
-	if (gNoRender)
+	if (gHeadlessClient)
 	{
 		HWND window_handle = (HWND)window->getPlatformWindow();
 		PAINTSTRUCT ps; 
@@ -1282,7 +1283,7 @@ BOOL LLViewerWindow::handlePaint(LLWindow *window,  S32 x,  S32 y, S32 width,  S
 		len = temp_str.length();
 		TextOutA(hdc, 0, 25, temp_str.c_str(), len); 
 
-		TextOutA(hdc, 0, 50, "Set \"DisableRendering FALSE\" in settings.ini file to reenable", 61);
+		TextOutA(hdc, 0, 50, "Set \"HeadlessClient FALSE\" in settings.ini file to reenable", 61);
 		EndPaint(window_handle, &ps); 
 		return TRUE;
 	}
@@ -1430,9 +1431,9 @@ LLViewerWindow::LLViewerWindow(
 	mWindow = LLWindowManager::createWindow(this,
 		title, name, x, y, width, height, 0,
 		fullscreen, 
-		gNoRender,
+		gHeadlessClient,
 		gSavedSettings.getBOOL("DisableVerticalSync"),
-		!gNoRender,
+		!gHeadlessClient,
 		ignore_pixel_depth,
 		gSavedSettings.getBOOL("RenderUseFBO") ? 0 : gSavedSettings.getU32("RenderFSAASamples")); //don't use window level anti-aliasing if FBOs are enabled
 
@@ -1895,11 +1896,8 @@ void LLViewerWindow::shutdownGL()
 	LLVertexBuffer::cleanupClass();
 
 	llinfos << "Stopping GL during shutdown" << llendl;
-	if (!gNoRender)
-	{
-		stopGL(FALSE);
-		stop_glerror();
-	}
+	stopGL(FALSE);
+	stop_glerror();
 
 	gGL.shutdown();
 }
@@ -1963,11 +1961,6 @@ void LLViewerWindow::reshape(S32 width, S32 height)
 	// may have been destructed.
 	if (!LLApp::isExiting())
 	{
-		if (gNoRender)
-		{
-			return;
-		}
-
 		gWindowResized = TRUE;
 
 		// update our window rectangle
@@ -2604,12 +2597,8 @@ void LLViewerWindow::updateUI()
 
 	S32 x = mCurrentMousePoint.mX;
 	S32 y = mCurrentMousePoint.mY;
-	MASK mask = gKeyboard->currentMask(TRUE);
 
-	if (gNoRender)
-	{
-		return;
-	}
+	MASK	mask = gKeyboard->currentMask(TRUE);
 
 	if (gPipeline.hasRenderDebugMask(LLPipeline::RENDER_DEBUG_RAYCAST))
 	{
@@ -3000,7 +2989,8 @@ void LLViewerWindow::updateLayout()
 			}
 			// Update the location of the blue box tool popup
 			LLCoordGL select_center_screen;
-			gFloaterTools->updatePopup( select_center_screen, gKeyboard->currentMask(TRUE) );
+			MASK	mask = gKeyboard->currentMask(TRUE);
+			gFloaterTools->updatePopup( select_center_screen, mask );
 		}
 		else
 		{
@@ -3126,7 +3116,8 @@ void LLViewerWindow::updateKeyboardFocus()
 		// sync all floaters with their focus state
 		gFloaterView->highlightFocusedFloater();
 		gSnapshotFloaterView->highlightFocusedFloater();
-		if ((gKeyboard->currentMask(TRUE) & MASK_CONTROL) == 0)
+		MASK	mask = gKeyboard->currentMask(TRUE);
+		if ((mask & MASK_CONTROL) == 0)
 		{
 			// control key no longer held down, finish cycle mode
 			gFloaterView->setCycleMode(FALSE);
@@ -3439,11 +3430,6 @@ BOOL LLViewerWindow::clickPointOnSurfaceGlobal(const S32 x, const S32 y, LLViewe
 
 void LLViewerWindow::pickAsync(S32 x, S32 y_from_bot, MASK mask, void (*callback)(const LLPickInfo& info), BOOL pick_transparent)
 {
-	if (gNoRender)
-	{
-		return;
-	}
-	
 	BOOL in_build_mode = LLFloaterReg::instanceVisible("build");
 	if (in_build_mode || LLDrawPoolAlpha::sShowDebugAlpha)
 	{
@@ -3479,11 +3465,6 @@ void LLViewerWindow::schedulePick(LLPickInfo& pick_info)
 
 void LLViewerWindow::performPick()
 {
-	if (gNoRender)
-	{
-		return;
-	}
-
 	if (!mPicks.empty())
 	{
 		std::vector<LLPickInfo>::iterator pick_it;
@@ -3515,11 +3496,6 @@ void LLViewerWindow::returnEmptyPicks()
 // Performs the GL object/land pick.
 LLPickInfo LLViewerWindow::pickImmediate(S32 x, S32 y_from_bot,  BOOL pick_transparent)
 {
-	if (gNoRender)
-	{
-		return LLPickInfo();
-	}
-
 	BOOL in_build_mode = LLFloaterReg::instanceVisible("build");
 	if (in_build_mode || LLDrawPoolAlpha::sShowDebugAlpha)
 	{
@@ -3529,7 +3505,8 @@ LLPickInfo LLViewerWindow::pickImmediate(S32 x, S32 y_from_bot,  BOOL pick_trans
 	}
 
 	// shortcut queueing in mPicks and just update mLastPick in place
-	mLastPick = LLPickInfo(LLCoordGL(x, y_from_bot), gKeyboard->currentMask(TRUE), pick_transparent, TRUE, NULL);
+	MASK	key_mask = gKeyboard->currentMask(TRUE);
+	mLastPick = LLPickInfo(LLCoordGL(x, y_from_bot), key_mask, pick_transparent, TRUE, NULL);
 	mLastPick.fetchResults();
 
 	return mLastPick;
@@ -4785,12 +4762,9 @@ bool LLViewerWindow::onAlert(const LLSD& notify)
 {
 	LLNotificationPtr notification = LLNotifications::instance().find(notify["id"].asUUID());
 
-	if (gNoRender)
+	if (gHeadlessClient)
 	{
 		llinfos << "Alert: " << notification->getName() << llendl;
-		notification->respond(LLSD::emptyMap());
-		LLNotifications::instance().cancel(notification);
-		return false;
 	}
 
 	// If we're in mouselook, the mouse is hidden and so the user can't click 
diff --git a/indra/newview/llviewerwindowlistener.cpp b/indra/newview/llviewerwindowlistener.cpp
index 0b52948680..1fe5fc9800 100644
--- a/indra/newview/llviewerwindowlistener.cpp
+++ b/indra/newview/llviewerwindowlistener.cpp
@@ -65,7 +65,6 @@ LLViewerWindowListener::LLViewerWindowListener(LLViewerWindow* llviewerwindow):
 
 void LLViewerWindowListener::saveSnapshot(const LLSD& event) const
 {
-    LLReqID reqid(event);
     typedef std::map<LLSD::String, LLViewerWindow::ESnapshotType> TypeMap;
     TypeMap types;
 #define tp(name) types[#name] = LLViewerWindow::SNAPSHOT_TYPE_##name
@@ -98,9 +97,7 @@ void LLViewerWindowListener::saveSnapshot(const LLSD& event) const
         type = found->second;
     }
     bool ok = mViewerWindow->saveSnapshot(event["filename"], width, height, showui, rebuild, type);
-    LLSD response(reqid.makeResponse());
-    response["ok"] = ok;
-    LLEventPumps::instance().obtain(event["reply"]).post(response);
+    sendReply(LLSDMap("ok", ok), event);
 }
 
 void LLViewerWindowListener::requestReshape(LLSD const & event_data) const
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index 2c5e728c87..f1934933b5 100644
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -1302,18 +1302,8 @@ void LLVOAvatar::initInstance(void)
 		
 	}
 	
-	if (gNoRender)
-	{
-		return;
-	}
-	
 	buildCharacter();
 	
-	if (gNoRender)
-	{
-		return;
-	}
-	
 	// preload specific motions here
 	createMotion( ANIM_AGENT_CUSTOMIZE);
 	createMotion( ANIM_AGENT_CUSTOMIZE_DONE);
@@ -1755,12 +1745,6 @@ void LLVOAvatar::buildCharacter()
 	BOOL status = loadAvatar();
 	stop_glerror();
 
-	if (gNoRender)
-	{
-		// Still want to load the avatar skeleton so visual parameters work.
-		return;
-	}
-
 // 	gPrintMessagesThisFrame = TRUE;
 	lldebugs << "Avatar load took " << timer.getElapsedTimeF32() << " seconds." << llendl;
 
@@ -2231,7 +2215,7 @@ BOOL LLVOAvatar::idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time)
 	setPixelAreaAndAngle(gAgent);
 
 	// force asynchronous drawable update
-	if(mDrawable.notNull() && !gNoRender)
+	if(mDrawable.notNull())
 	{	
 		LLFastTimer t(FTM_JOINT_UPDATE);
 	
@@ -2288,11 +2272,6 @@ BOOL LLVOAvatar::idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time)
 	LLVector3 root_pos_last = mRoot.getWorldPosition();
 	BOOL detailed_update = updateCharacter(agent);
 
-	if (gNoRender)
-	{
-		return TRUE;
-	}
-
 	static LLUICachedControl<bool> visualizers_in_calls("ShowVoiceVisualizersInCalls", false);
 	bool voice_enabled = (visualizers_in_calls || LLVoiceClient::getInstance()->inProximalChannel()) &&
 						 LLVoiceClient::getInstance()->getVoiceEnabled(mID);
@@ -3265,17 +3244,6 @@ BOOL LLVOAvatar::updateCharacter(LLAgent &agent)
 		}
 	}
 
-	if (gNoRender)
-	{
-		// Hack if we're running drones...
-		if (isSelf())
-		{
-			gAgent.setPositionAgent(getPositionAgent());
-		}
-		return FALSE;
-	}
-
-
 	LLVector3d root_pos_global;
 
 	if (!mIsBuilt)
@@ -4202,7 +4170,7 @@ void LLVOAvatar::updateTextures()
 {
 	BOOL render_avatar = TRUE;
 
-	if (mIsDummy || gNoRender)
+	if (mIsDummy)
 	{
 		return;
 	}
@@ -4476,11 +4444,6 @@ void LLVOAvatar::processAnimationStateChanges()
 {
 	LLMemType mt(LLMemType::MTYPE_AVATAR);
 	
-	if (gNoRender)
-	{
-		return;
-	}
-
 	if ( isAnyAnimationSignaled(AGENT_WALK_ANIMS, NUM_AGENT_WALK_ANIMS) )
 	{
 		startMotion(ANIM_AGENT_WALK_ADJUST);
@@ -4875,7 +4838,7 @@ void LLVOAvatar::getGround(const LLVector3 &in_pos_agent, LLVector3 &out_pos_age
 	LLVector3d z_vec(0.0f, 0.0f, 1.0f);
 	LLVector3d p0_global, p1_global;
 
-	if (gNoRender || mIsDummy)
+	if (mIsDummy)
 	{
 		outNorm.setVec(z_vec);
 		out_pos_agent = in_pos_agent;
@@ -5447,11 +5410,6 @@ BOOL LLVOAvatar::loadLayersets()
 //-----------------------------------------------------------------------------
 void LLVOAvatar::updateVisualParams()
 {
-	if (gNoRender)
-	{
-		return;
-	}
-
 	setSex( (getVisualParamWeight( "male" ) > 0.5f) ? SEX_MALE : SEX_FEMALE );
 
 	LLCharacter::updateVisualParams();
@@ -6182,8 +6140,6 @@ LLMotion* LLVOAvatar::findMotion(const LLUUID& id) const
 void LLVOAvatar::updateMeshTextures()
 {
     // llinfos << "updateMeshTextures" << llendl;
-	if (gNoRender) return;
-
 	// if user has never specified a texture, assign the default
 	for (U32 i=0; i < getNumTEs(); i++)
 	{
@@ -6837,11 +6793,6 @@ void LLVOAvatar::processAvatarAppearance( LLMessageSystem* mesgsys )
 		}
 	}
 
-	if (gNoRender)
-	{
-		return;
-	}
-
 	ESex old_sex = getSex();
 
 //	llinfos << "LLVOAvatar::processAvatarAppearance()" << llendl;
diff --git a/indra/newview/llvoavatarself.cpp b/indra/newview/llvoavatarself.cpp
index 799ed433d7..3b4066e3ca 100644
--- a/indra/newview/llvoavatarself.cpp
+++ b/indra/newview/llvoavatarself.cpp
@@ -2513,10 +2513,6 @@ bool LLVOAvatarSelf::sendAppearanceMessage(LLMessageSystem *mesgsys) const
 //------------------------------------------------------------------------
 BOOL LLVOAvatarSelf::needsRenderBeam()
 {
-	if (gNoRender)
-	{
-		return FALSE;
-	}
 	LLTool *tool = LLToolMgr::getInstance()->getCurrentTool();
 
 	BOOL is_touching_or_grabbing = (tool == LLToolGrab::getInstance() && LLToolGrab::getInstance()->isEditing());
diff --git a/indra/newview/llworld.cpp b/indra/newview/llworld.cpp
index 8f7197c607..c6f9b6f6e4 100644
--- a/indra/newview/llworld.cpp
+++ b/indra/newview/llworld.cpp
@@ -98,11 +98,6 @@ LLWorld::LLWorld() :
 		mEdgeWaterObjects[i] = NULL;
 	}
 
-	if (gNoRender)
-	{
-		return;
-	}
-
 	LLPointer<LLImageRaw> raw = new LLImageRaw(1,1,4);
 	U8 *default_texture = raw->getData();
 	*(default_texture++) = MAX_WATER_COLOR.mV[0];
@@ -626,10 +621,7 @@ void LLWorld::updateVisibilities()
 		if (LLViewerCamera::getInstance()->sphereInFrustum(regionp->getCenterAgent(), radius))
 		{
 			regionp->calculateCameraDistance();
-			if (!gNoRender)
-			{
-				regionp->getLand().updatePatchVisibilities(gAgent);
-			}
+			regionp->getLand().updatePatchVisibilities(gAgent);
 		}
 		else
 		{
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 58dc90ccd9..6dc8f28265 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -1228,10 +1228,6 @@ void LLPipeline::unlinkDrawable(LLDrawable *drawable)
 U32 LLPipeline::addObject(LLViewerObject *vobj)
 {
 	LLMemType mt_ao(LLMemType::MTYPE_PIPELINE_ADD_OBJECT);
-	if (gNoRender)
-	{
-		return 0;
-	}
 
 	if (gSavedSettings.getBOOL("RenderDelayCreation"))
 	{