Merge pull request #2652 from secondlife/lua-merge-dev2

Merge develop into release/luau-scripting

8 files changed, 977 insertions, 258 deletions

diff --git a/indra/llinventory/llsettingsbase.cpp b/indra/llinventory/llsettingsbase.cpp
index 4aab3dee3b..0ee71de3a1 100644
--- a/indra/llinventory/llsettingsbase.cpp
+++ b/indra/llinventory/llsettingsbase.cpp
@@ -69,25 +69,99 @@ const U32 LLSettingsBase::Validator::VALIDATION_PARTIAL(0x01 << 0);
 LLSettingsBase::LLSettingsBase():
     mSettings(LLSD::emptyMap()),
     mDirty(true),
-    mBlendedFactor(0.0)
+    mLLSDDirty(true),
+    mReplaced(false),
+    mBlendedFactor(0.0),
+    mSettingFlags(0)
 {
 }
 
 LLSettingsBase::LLSettingsBase(const LLSD setting) :
     mSettings(setting),
+    mLLSDDirty(true),
     mDirty(true),
-    mBlendedFactor(0.0)
+    mReplaced(false),
+    mBlendedFactor(0.0),
+    mSettingFlags(0)
 {
 }
 
+//virtual
+void LLSettingsBase::loadValuesFromLLSD()
+{
+    mLLSDDirty = false;
+
+    mAssetId = mSettings[SETTING_ASSETID].asUUID();
+    mSettingId = getValue(SETTING_ID).asUUID();
+    mSettingName = getValue(SETTING_NAME).asString();
+    if (mSettings.has(SETTING_FLAGS))
+    {
+        mSettingFlags = (U32)mSettings[SETTING_FLAGS].asInteger();
+    }
+    else
+    {
+        mSettingFlags = 0;
+    }
+}
+
+//virtual
+void LLSettingsBase::saveValuesToLLSD()
+{
+    mLLSDDirty = false;
+
+    mSettings[SETTING_NAME] = mSettingName;
+    if (mAssetId.isNull())
+    {
+        mSettings.erase(SETTING_ASSETID);
+    }
+    else
+    {
+        mSettings[SETTING_ASSETID] = mAssetId;
+    }
+    mSettings[SETTING_FLAGS] = LLSD::Integer(mSettingFlags);
+}
+
+void LLSettingsBase::saveValuesIfNeeded()
+{
+    if (mLLSDDirty)
+    {
+        saveValuesToLLSD();
+    }
+}
+
 //=========================================================================
-void LLSettingsBase::lerpSettings(const LLSettingsBase &other, F64 mix)
+void LLSettingsBase::lerpSettings(LLSettingsBase &other, F64 mix)
 {
-    mSettings = interpolateSDMap(mSettings, other.mSettings, other.getParameterMap(), mix);
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_ENVIRONMENT;
+    saveValuesIfNeeded();
+    stringset_t skip = getSkipInterpolateKeys();
+    stringset_t slerps = getSlerpKeys();
+    mSettings = interpolateSDMap(mSettings, other.getSettings(), other.getParameterMap(), mix, skip, slerps);
     setDirtyFlag(true);
+    loadValuesFromLLSD();
+}
+
+void LLSettingsBase::lerpVector2(LLVector2& a, const LLVector2& b, F32 mix)
+{
+    a.mV[0] = lerp(a.mV[0], b.mV[0], mix);
+    a.mV[1] = lerp(a.mV[1], b.mV[1], mix);
 }
 
-LLSD LLSettingsBase::combineSDMaps(const LLSD &settings, const LLSD &other) const
+void LLSettingsBase::lerpVector3(LLVector3& a, const LLVector3& b, F32 mix)
+{
+    a.mV[0] = lerp(a.mV[0], b.mV[0], mix);
+    a.mV[1] = lerp(a.mV[1], b.mV[1], mix);
+    a.mV[2] = lerp(a.mV[2], b.mV[2], mix);
+}
+
+void LLSettingsBase::lerpColor(LLColor3& a, const LLColor3& b, F32 mix)
+{
+    a.mV[0] = lerp(a.mV[0], b.mV[0], mix);
+    a.mV[1] = lerp(a.mV[1], b.mV[1], mix);
+    a.mV[2] = lerp(a.mV[2], b.mV[2], mix);
+}
+
+LLSD LLSettingsBase::combineSDMaps(const LLSD &settings, const LLSD &other)
 {
     LLSD newSettings;
 
@@ -161,13 +235,10 @@ LLSD LLSettingsBase::combineSDMaps(const LLSD &settings, const LLSD &other) cons
     return newSettings;
 }
 
-LLSD LLSettingsBase::interpolateSDMap(const LLSD &settings, const LLSD &other, const parammapping_t& defaults, F64 mix) const
+LLSD LLSettingsBase::interpolateSDMap(const LLSD &settings, const LLSD &other, const parammapping_t& defaults, F64 mix, const stringset_t& skip, const stringset_t& slerps)
 {
     LLSD newSettings;
 
-    stringset_t skip = getSkipInterpolateKeys();
-    stringset_t slerps = getSlerpKeys();
-
     llassert(mix >= 0.0f && mix <= 1.0f);
 
     for (LLSD::map_const_iterator it = settings.beginMap(); it != settings.endMap(); ++it)
@@ -204,7 +275,7 @@ LLSD LLSettingsBase::interpolateSDMap(const LLSD &settings, const LLSD &other, c
             }
         }
 
-        newSettings[key_name] = interpolateSDValue(key_name, value, other_value, defaults, mix, slerps);
+        newSettings[key_name] = interpolateSDValue(key_name, value, other_value, defaults, mix, skip, slerps);
     }
 
     // Special handling cases
@@ -233,12 +304,12 @@ LLSD LLSettingsBase::interpolateSDMap(const LLSD &settings, const LLSD &other, c
         if (def_iter != defaults.end())
         {
             // Blend against default value
-            newSettings[key_name] = interpolateSDValue(key_name, def_iter->second.getDefaultValue(), (*it).second, defaults, mix, slerps);
+            newSettings[key_name] = interpolateSDValue(key_name, def_iter->second.getDefaultValue(), (*it).second, defaults, mix, skip, slerps);
         }
         else if ((*it).second.type() == LLSD::TypeMap)
         {
             // interpolate in case there are defaults inside (part of legacy)
-            newSettings[key_name] = interpolateSDValue(key_name, LLSDMap(), (*it).second, defaults, mix, slerps);
+            newSettings[key_name] = interpolateSDValue(key_name, LLSDMap(), (*it).second, defaults, mix, skip, slerps);
         }
         // else do nothing when no known defaults
         // TODO: Should I blend this out instead?
@@ -260,7 +331,7 @@ LLSD LLSettingsBase::interpolateSDMap(const LLSD &settings, const LLSD &other, c
     return newSettings;
 }
 
-LLSD LLSettingsBase::interpolateSDValue(const std::string& key_name, const LLSD &value, const LLSD &other_value, const parammapping_t& defaults, BlendFactor mix, const stringset_t& slerps) const
+LLSD LLSettingsBase::interpolateSDValue(const std::string& key_name, const LLSD &value, const LLSD &other_value, const parammapping_t& defaults, BlendFactor mix, const stringset_t& skip, const stringset_t& slerps)
 {
     LLSD new_value;
 
@@ -286,7 +357,7 @@ LLSD LLSettingsBase::interpolateSDValue(const std::string& key_name, const LLSD
             break;
         case LLSD::TypeMap:
             // deep copy.
-            new_value = interpolateSDMap(value, other_value, defaults, mix);
+            new_value = interpolateSDMap(value, other_value, defaults, mix, skip, slerps);
             break;
 
         case LLSD::TypeArray:
@@ -348,13 +419,15 @@ LLSettingsBase::stringset_t LLSettingsBase::getSkipInterpolateKeys() const
     return skipSet;
 }
 
-LLSD LLSettingsBase::getSettings() const
+LLSD& LLSettingsBase::getSettings()
 {
+    saveValuesIfNeeded();
     return mSettings;
 }
 
-LLSD LLSettingsBase::cloneSettings() const
+LLSD LLSettingsBase::cloneSettings()
 {
+    saveValuesIfNeeded();
     LLSD settings(combineSDMaps(getSettings(), LLSD()));
     if (U32 flags = getFlags())
     {
@@ -363,7 +436,7 @@ LLSD LLSettingsBase::cloneSettings() const
     return settings;
 }
 
-size_t LLSettingsBase::getHash() const
+size_t LLSettingsBase::getHash()
 {   // get a shallow copy of the LLSD filtering out values to not include in the hash
     LLSD hash_settings = llsd_shallow(getSettings(),
         LLSDMap(SETTING_NAME, false)(SETTING_ID, false)(SETTING_HASH, false)("*", true));
@@ -381,7 +454,9 @@ bool LLSettingsBase::validate()
         mSettings[SETTING_TYPE] = getSettingsType();
     }
 
+    saveValuesIfNeeded();
     LLSD result = LLSettingsBase::settingValidation(mSettings, validations);
+    loadValuesFromLLSD();
 
     if (result["errors"].size() > 0)
     {
@@ -704,7 +779,7 @@ F64 LLSettingsBlender::setBlendFactor(const LLSettingsBase::BlendFactor& blendf_
 
     if (mTarget)
     {
-        mTarget->replaceSettings(mInitial->getSettings());
+        mTarget->replaceSettings(mInitial);
         mTarget->blend(mFinal, blendf);
     }
     else
@@ -719,7 +794,7 @@ void LLSettingsBlender::triggerComplete()
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_ENVIRONMENT;
     if (mTarget)
-        mTarget->replaceSettings(mFinal->getSettings());
+        mTarget->replaceSettings(mFinal);
     LLSettingsBlender::ptr_t hold = shared_from_this();   // prevents this from deleting too soon
     mTarget->update();
     mOnFinished(shared_from_this());
diff --git a/indra/llinventory/llsettingsbase.h b/indra/llinventory/llsettingsbase.h
index 9d8d746b7e..816ff3e111 100644
--- a/indra/llinventory/llsettingsbase.h
+++ b/indra/llinventory/llsettingsbase.h
@@ -109,72 +109,59 @@ public:
     virtual bool isDirty() const { return mDirty; }
     virtual bool isVeryDirty() const { return mReplaced; }
     inline void setDirtyFlag(bool dirty) { mDirty = dirty; clearAssetId(); }
+    inline void setReplaced() { mReplaced = true; }
 
-    size_t getHash() const; // Hash will not include Name, ID or a previously stored Hash
+    size_t getHash(); // Hash will not include Name, ID or a previously stored Hash
 
     inline LLUUID getId() const
     {
-        return getValue(SETTING_ID).asUUID();
+        return mSettingId;
     }
 
     inline std::string getName() const
     {
-        return getValue(SETTING_NAME).asString();
+        return mSettingName;
     }
 
     inline void setName(std::string val)
     {
-        setValue(SETTING_NAME, val);
+        mSettingName = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     inline LLUUID getAssetId() const
     {
-        if (mSettings.has(SETTING_ASSETID))
-            return mSettings[SETTING_ASSETID].asUUID();
-        return LLUUID();
+        return mAssetId;
     }
 
     inline U32 getFlags() const
     {
-        if (mSettings.has(SETTING_FLAGS))
-            return static_cast<U32>(mSettings[SETTING_FLAGS].asInteger());
-        return 0;
+        return mSettingFlags;
     }
 
     inline void setFlags(U32 value)
     {
-        setLLSD(SETTING_FLAGS, LLSD::Integer(value));
+        mSettingFlags = value;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     inline bool getFlag(U32 flag) const
     {
-        if (mSettings.has(SETTING_FLAGS))
-            return ((U32)mSettings[SETTING_FLAGS].asInteger() & flag) == flag;
-        return false;
+        return (mSettingFlags & flag) == flag;
     }
 
     inline void setFlag(U32 flag)
     {
-        U32 flags((mSettings.has(SETTING_FLAGS)) ? (U32)mSettings[SETTING_FLAGS].asInteger() : 0);
-
-        flags |= flag;
-
-        if (flags)
-            mSettings[SETTING_FLAGS] = LLSD::Integer(flags);
-        else
-            mSettings.erase(SETTING_FLAGS);
+        mSettingFlags |= flag;
+        setLLSDDirty();
     }
 
     inline void clearFlag(U32 flag)
     {
-        U32 flags((mSettings.has(SETTING_FLAGS)) ? (U32)mSettings[SETTING_FLAGS].asInteger() : 0);
-
-        flags &= ~flag;
-
-        if (flags)
-            mSettings[SETTING_FLAGS] = LLSD::Integer(flags);
-        else
-            mSettings.erase(SETTING_FLAGS);
+        mSettingFlags &= ~flag;
+        setLLSDDirty();
     }
 
     virtual void replaceSettings(LLSD settings)
@@ -183,14 +170,41 @@ public:
         setDirtyFlag(true);
         mReplaced = true;
         mSettings = settings;
+        loadValuesFromLLSD();
+    }
+
+    virtual void replaceSettings(const ptr_t& other)
+    {
+        mBlendedFactor = 0.0;
+        setDirtyFlag(true);
+        mReplaced = true;
+        mSettingFlags = other->getFlags();
+        mSettingName = other->getName();
+        mSettingId = other->getId();
+        mAssetId = other->getAssetId();
+        setLLSDDirty();
+    }
+
+    void setSettings(LLSD settings)
+    {
+        setDirtyFlag(true);
+        mSettings = settings;
+        loadValuesFromLLSD();
     }
 
-    virtual LLSD getSettings() const;
+    // if you are using getSettings to edit them, call setSettings(settings),
+    // replaceSettings(settings) or loadValuesFromLLSD() afterwards
+    virtual LLSD& getSettings();
+    virtual void setLLSDDirty()
+    {
+        mLLSDDirty = true;
+    }
 
     //---------------------------------------------------------------------
     //
     inline void setLLSD(const std::string &name, const LLSD &value)
     {
+        saveValuesIfNeeded();
         mSettings[name] = value;
         mDirty = true;
         if (name != SETTING_ASSETID)
@@ -202,8 +216,9 @@ public:
         setLLSD(name, value);
     }
 
-    inline LLSD getValue(const std::string &name, const LLSD &deflt = LLSD()) const
+    inline LLSD getValue(const std::string &name, const LLSD &deflt = LLSD())
     {
+        saveValuesIfNeeded();
         if (!mSettings.has(name))
             return deflt;
         return mSettings[name];
@@ -259,11 +274,11 @@ public:
         (const_cast<LLSettingsBase *>(this))->updateSettings();
     }
 
-    virtual void    blend(const ptr_t &end, BlendFactor blendf) = 0;
+    virtual void    blend(ptr_t &end, BlendFactor blendf) = 0;
 
     virtual bool    validate();
 
-    virtual ptr_t   buildDerivedClone() const = 0;
+    virtual ptr_t   buildDerivedClone() = 0;
 
     class Validator
     {
@@ -310,17 +325,24 @@ public:
 
     inline void setAssetId(LLUUID value)
     {   // note that this skips setLLSD
-        mSettings[SETTING_ASSETID] = value;
+        mAssetId = value;
+        mLLSDDirty = true;
     }
 
     inline void clearAssetId()
     {
-        if (mSettings.has(SETTING_ASSETID))
-            mSettings.erase(SETTING_ASSETID);
+        mAssetId.setNull();
+        mLLSDDirty = true;
     }
 
     // Calculate any custom settings that may need to be cached.
     virtual void updateSettings() { mDirty = false; mReplaced = false; }
+    LLSD         cloneSettings();
+
+    static void lerpVector2(LLVector2& a, const LLVector2& b, F32 mix);
+    static void lerpVector3(LLVector3& a, const LLVector3& b, F32 mix);
+    static void lerpColor(LLColor3& a, const LLColor3& b, F32 mix);
+
 protected:
 
     LLSettingsBase();
@@ -331,7 +353,7 @@ protected:
     typedef std::set<std::string>   stringset_t;
 
     // combining settings objects. Customize for specific setting types
-    virtual void lerpSettings(const LLSettingsBase &other, BlendFactor mix);
+    virtual void lerpSettings(LLSettingsBase &other, BlendFactor mix);
 
     // combining settings maps where it can based on mix rate
     // @settings initial value (mix==0)
@@ -339,8 +361,8 @@ protected:
     // @defaults list of default values for legacy fields and (re)setting shaders
     // @mix from 0 to 1, ratio or rate of transition from initial 'settings' to 'other'
     // return interpolated and combined LLSD map
-    LLSD    interpolateSDMap(const LLSD &settings, const LLSD &other, const parammapping_t& defaults, BlendFactor mix) const;
-    LLSD    interpolateSDValue(const std::string& name, const LLSD &value, const LLSD &other, const parammapping_t& defaults, BlendFactor mix, const stringset_t& slerps) const;
+    static LLSD interpolateSDMap(const LLSD &settings, const LLSD &other, const parammapping_t& defaults, BlendFactor mix, const stringset_t& skip, const stringset_t& slerps);
+    static LLSD interpolateSDValue(const std::string& name, const LLSD &value, const LLSD &other, const parammapping_t& defaults, BlendFactor mix, const stringset_t& skip, const stringset_t& slerps);
 
     /// when lerping between settings, some may require special handling.
     /// Get a list of these key to be skipped by the default settings lerp.
@@ -353,32 +375,40 @@ protected:
 
     virtual validation_list_t getValidationList() const = 0;
 
-    // Apply any settings that need special handling.
-    virtual void applySpecial(void *, bool force = false) { };
+    // Apply settings.
+    virtual void applyToUniforms(void *) { };
+    virtual void applySpecial(void*, bool force = false) { };
 
     virtual parammapping_t getParameterMap() const { return parammapping_t(); }
 
-    LLSD        mSettings;
-
-    LLSD        cloneSettings() const;
-
     inline void setBlendFactor(BlendFactor blendfactor)
     {
         mBlendedFactor = blendfactor;
     }
 
-    void replaceWith(LLSettingsBase::ptr_t other)
+    virtual void replaceWith(const LLSettingsBase::ptr_t other)
     {
-        replaceSettings(other->cloneSettings());
+        replaceSettings(other);
         setBlendFactor(other->getBlendFactor());
     }
 
+    virtual void loadValuesFromLLSD();
+    virtual void saveValuesToLLSD();
+    void saveValuesIfNeeded();
+
+    LLUUID mAssetId;
+    LLUUID mSettingId;
+    std::string mSettingName;
+    U32 mSettingFlags;
+
 private:
+    bool        mLLSDDirty;
     bool        mDirty;
     bool        mReplaced; // super dirty!
 
-    LLSD        combineSDMaps(const LLSD &first, const LLSD &other) const;
+    static LLSD combineSDMaps(const LLSD &first, const LLSD &other);
 
+    LLSD        mSettings;
     BlendFactor mBlendedFactor;
 };
 
diff --git a/indra/llinventory/llsettingsdaycycle.cpp b/indra/llinventory/llsettingsdaycycle.cpp
index 1e7de94414..2b189e7cca 100644
--- a/indra/llinventory/llsettingsdaycycle.cpp
+++ b/indra/llinventory/llsettingsdaycycle.cpp
@@ -124,33 +124,42 @@ static const F32 DEFAULT_MULTISLIDER_INCREMENT(0.005f);
 //=========================================================================
 LLSettingsDay::LLSettingsDay(const LLSD &data) :
     LLSettingsBase(data),
-    mInitialized(false)
+    mInitialized(false),
+    mDaySettings(LLSD::emptyMap())
 {
     mDayTracks.resize(TRACK_MAX);
+    loadValuesFromLLSD();
 }
 
 LLSettingsDay::LLSettingsDay() :
     LLSettingsBase(),
-    mInitialized(false)
+    mInitialized(false),
+    mDaySettings(LLSD::emptyMap())
 {
     mDayTracks.resize(TRACK_MAX);
+    replaceSettings(defaults());
 }
 
 //=========================================================================
-LLSD LLSettingsDay::getSettings() const
+LLSD& LLSettingsDay::getSettings()
 {
-    LLSD settings(LLSD::emptyMap());
+    if (!mDaySettings.emptyMap())
+    {
+        return mDaySettings;
+    }
+    mDaySettings = LLSD::emptyMap();
+    LLSD& settings = LLSettingsBase::getSettings();
 
-    if (mSettings.has(SETTING_NAME))
-        settings[SETTING_NAME] = mSettings[SETTING_NAME];
+    if (settings.has(SETTING_NAME))
+        mDaySettings[SETTING_NAME] = settings[SETTING_NAME];
 
-    if (mSettings.has(SETTING_ID))
-        settings[SETTING_ID] = mSettings[SETTING_ID];
+    if (settings.has(SETTING_ID))
+        mDaySettings[SETTING_ID] = settings[SETTING_ID];
 
-    if (mSettings.has(SETTING_ASSETID))
-        settings[SETTING_ASSETID] = mSettings[SETTING_ASSETID];
+    if (settings.has(SETTING_ASSETID))
+        mDaySettings[SETTING_ASSETID] = settings[SETTING_ASSETID];
 
-    settings[SETTING_TYPE] = getSettingsType();
+    mDaySettings[SETTING_TYPE] = getSettingsType();
 
     std::map<std::string, LLSettingsBase::ptr_t> in_use;
 
@@ -174,7 +183,7 @@ LLSD LLSettingsDay::getSettings() const
         }
         tracks.append(trackout);
     }
-    settings[SETTING_TRACKS] = tracks;
+    mDaySettings[SETTING_TRACKS] = tracks;
 
     LLSD frames(LLSD::emptyMap());
     for (std::map<std::string, LLSettingsBase::ptr_t>::iterator itFrame = in_use.begin(); itFrame != in_use.end(); ++itFrame)
@@ -184,9 +193,15 @@ LLSD LLSettingsDay::getSettings() const
 
         frames[(*itFrame).first] = framesettings;
     }
-    settings[SETTING_FRAMES] = frames;
+    mDaySettings[SETTING_FRAMES] = frames;
 
-    return settings;
+    return mDaySettings;
+}
+
+void LLSettingsDay::setLLSDDirty()
+{
+    mDaySettings = LLSD::emptyMap();
+    LLSettingsBase::setLLSDDirty();
 }
 
 bool LLSettingsDay::initialize(bool validate_frames)
@@ -392,6 +407,8 @@ bool LLSettingsDay::initialize(bool validate_frames)
         mSettings[SETTING_ASSETID] = assetid;
     }
 
+    loadValuesFromLLSD();
+
     mInitialized = true;
     return true;
 }
@@ -449,7 +466,7 @@ LLSD LLSettingsDay::defaults()
     return dfltsetting;
 }
 
-void LLSettingsDay::blend(const LLSettingsBase::ptr_t &other, F64 mix)
+void LLSettingsDay::blend(LLSettingsBase::ptr_t &other, F64 mix)
 {
     LL_ERRS("DAYCYCLE") << "Day cycles are not blendable!" << LL_ENDL;
 }
diff --git a/indra/llinventory/llsettingsdaycycle.h b/indra/llinventory/llsettingsdaycycle.h
index 917b0870f2..d37423ea9a 100644
--- a/indra/llinventory/llsettingsdaycycle.h
+++ b/indra/llinventory/llsettingsdaycycle.h
@@ -81,9 +81,10 @@ public:
 
     bool                        initialize(bool validate_frames = false);
 
-    virtual ptr_t               buildClone() const = 0;
-    virtual ptr_t               buildDeepCloneAndUncompress() const = 0;
-    virtual LLSD                getSettings() const SETTINGS_OVERRIDE;
+    virtual ptr_t               buildClone() = 0;
+    virtual ptr_t               buildDeepCloneAndUncompress() = 0;
+    virtual LLSD&               getSettings() SETTINGS_OVERRIDE;
+    virtual void                setLLSDDirty() override;
     virtual LLSettingsType::type_e  getSettingsTypeValue() const SETTINGS_OVERRIDE { return LLSettingsType::ST_DAYCYCLE; }
 
 
@@ -91,7 +92,7 @@ public:
     virtual std::string         getSettingsType() const SETTINGS_OVERRIDE { return std::string("daycycle"); }
 
     // Settings status
-    virtual void                blend(const LLSettingsBase::ptr_t &other, F64 mix) SETTINGS_OVERRIDE;
+    virtual void                blend(LLSettingsBase::ptr_t &other, F64 mix) SETTINGS_OVERRIDE;
 
     static LLSD                 defaults();
 
@@ -127,7 +128,7 @@ public:
     virtual validation_list_t   getValidationList() const SETTINGS_OVERRIDE;
     static validation_list_t    validationList();
 
-    virtual LLSettingsBase::ptr_t buildDerivedClone() const SETTINGS_OVERRIDE { return buildClone(); }
+    virtual LLSettingsBase::ptr_t buildDerivedClone() SETTINGS_OVERRIDE { return buildClone(); }
 
     LLSettingsBase::TrackPosition getUpperBoundFrame(S32 track, const LLSettingsBase::TrackPosition& keyframe);
     LLSettingsBase::TrackPosition getLowerBoundFrame(S32 track, const LLSettingsBase::TrackPosition& keyframe);
@@ -143,6 +144,7 @@ protected:
 
 private:
     CycleList_t                 mDayTracks;
+    LLSD                        mDaySettings;
 
     LLSettingsBase::Seconds     mLastUpdateTime;
 
diff --git a/indra/llinventory/llsettingssky.cpp b/indra/llinventory/llsettingssky.cpp
index cbec2f4906..3685915ffd 100644
--- a/indra/llinventory/llsettingssky.cpp
+++ b/indra/llinventory/llsettingssky.cpp
@@ -407,10 +407,11 @@ LLSettingsSky::LLSettingsSky(const LLSD &data) :
     mNextRainbowTextureId(),
     mNextHaloTextureId()
 {
+    loadValuesFromLLSD();
 }
 
 LLSettingsSky::LLSettingsSky():
-    LLSettingsBase(),
+    LLSettingsBase(LLSettingsSky::defaults()),
     mNextSunTextureId(),
     mNextMoonTextureId(),
     mNextCloudTextureId(),
@@ -418,6 +419,7 @@ LLSettingsSky::LLSettingsSky():
     mNextRainbowTextureId(),
     mNextHaloTextureId()
 {
+    replaceSettings(defaults());
 }
 
 void LLSettingsSky::replaceSettings(LLSD settings)
@@ -431,7 +433,80 @@ void LLSettingsSky::replaceSettings(LLSD settings)
     mNextHaloTextureId.setNull();
 }
 
-void LLSettingsSky::replaceWithSky(LLSettingsSky::ptr_t pother)
+void LLSettingsSky::replaceSettings(const LLSettingsBase::ptr_t& other_sky)
+{
+    LLSettingsBase::replaceSettings(other_sky);
+
+    llassert(getSettingsType() == other_sky->getSettingsType());
+
+    LLSettingsSky::ptr_t other = PTR_NAMESPACE::dynamic_pointer_cast<LLSettingsSky>(other_sky);
+
+    mCanAutoAdjust = other->mCanAutoAdjust;
+    mReflectionProbeAmbiance = other->mReflectionProbeAmbiance;
+
+    mSunScale = other->mSunScale;
+    mSunRotation = other->mSunRotation;
+    mSunlightColor = other->mSunlightColor;
+    mStarBrightness = other->mStarBrightness;
+    mMoonBrightness = other->mMoonBrightness;
+    mMoonScale = other->mMoonScale;
+    mMoonRotation = other->mMoonRotation;
+    mMaxY = other->mMaxY;
+    mGlow = other->mGlow;
+    mGamma = other->mGamma;
+    mCloudVariance = other->mCloudVariance;
+    mCloudShadow = other->mCloudShadow;
+    mScrollRate = other->mScrollRate;
+    mCloudScale = other->mCloudScale;
+    mCloudPosDensity1 = other->mCloudPosDensity1;
+    mCloudPosDensity2 = other->mCloudPosDensity2;
+    mCloudColor = other->mCloudColor;
+
+    mAbsorptionConfigs = other->mAbsorptionConfigs;
+    mMieConfigs = other->mMieConfigs;
+    mRayleighConfigs = other->mRayleighConfigs;
+
+    mSunArcRadians = other->mSunArcRadians;
+    mSkyTopRadius = other->mSkyTopRadius;
+    mSkyBottomRadius = other->mSkyBottomRadius;
+    mSkyMoistureLevel = other->mSkyMoistureLevel;
+    mSkyDropletRadius = other->mSkyDropletRadius;
+    mSkyIceLevel = other->mSkyIceLevel;
+    mPlanetRadius = other->mPlanetRadius;
+
+    mHasLegacyHaze = other->mHasLegacyHaze;
+    mDistanceMultiplier = other->mDistanceMultiplier;
+    mDensityMultiplier = other->mDensityMultiplier;
+    mHazeHorizon = other->mHazeHorizon;
+    mHazeDensity = other->mHazeDensity;
+    mBlueHorizon = other->mBlueHorizon;
+    mBlueDensity = other->mBlueDensity;
+    mAmbientColor = other->mAmbientColor;
+
+    mLegacyDistanceMultiplier = other->mLegacyDistanceMultiplier;
+    mLegacyDensityMultiplier = other->mLegacyDensityMultiplier;
+    mLegacyHazeHorizon = other->mLegacyHazeHorizon;
+    mLegacyHazeDensity = other->mLegacyHazeDensity;
+    mLegacyBlueHorizon = other->mLegacyBlueHorizon;
+    mLegacyBlueDensity = other->mLegacyBlueDensity;
+    mLegacyAmbientColor = other->mLegacyAmbientColor;
+
+    mSunTextureId = other->mSunTextureId;
+    mMoonTextureId = other->mMoonTextureId;
+    mCloudTextureId = other->mCloudTextureId;
+    mHaloTextureId = other->mHaloTextureId;
+    mRainbowTextureId = other->mRainbowTextureId;
+    mBloomTextureId = other->mBloomTextureId;
+
+    mNextSunTextureId.setNull();
+    mNextMoonTextureId.setNull();
+    mNextCloudTextureId.setNull();
+    mNextBloomTextureId.setNull();
+    mNextRainbowTextureId.setNull();
+    mNextHaloTextureId.setNull();
+}
+
+void LLSettingsSky::replaceWithSky(const LLSettingsSky::ptr_t& pother)
 {
     replaceWith(pother);
 
@@ -443,61 +518,158 @@ void LLSettingsSky::replaceWithSky(LLSettingsSky::ptr_t pother)
     mNextHaloTextureId = pother->mNextHaloTextureId;
 }
 
-void LLSettingsSky::blend(const LLSettingsBase::ptr_t &end, F64 blendf)
+bool lerp_legacy_color(LLColor3& a, bool& a_has_legacy, const LLColor3& b, bool b_has_legacy, const LLColor3& def, F32 mix)
 {
-    LL_PROFILE_ZONE_SCOPED_CATEGORY_ENVIRONMENT;
-    llassert(getSettingsType() == end->getSettingsType());
+    if (b_has_legacy)
+    {
+        if (a_has_legacy)
+        {
+            LLSettingsBase::lerpColor(a, b, mix);
+        }
+        else
+        {
+            a = def;
+            LLSettingsBase::lerpColor(a, b, mix);
+            a_has_legacy = true;
+        }
+    }
+    else if (a_has_legacy)
+    {
+        LLSettingsBase::lerpColor(a, def, mix);
+    }
+    else
+    {
+        LLSettingsBase::lerpColor(a, b, mix);
+    }
+    return a_has_legacy;
+}
 
-    LLSettingsSky::ptr_t other = PTR_NAMESPACE::dynamic_pointer_cast<LLSettingsSky>(end);
-    if (other)
+bool lerp_legacy_float(F32& a, bool& a_has_legacy, F32 b, bool b_has_legacy, F32 def, F32 mix)
+{
+    if (b_has_legacy)
     {
-        if (other->mSettings.has(SETTING_LEGACY_HAZE))
+        if (a_has_legacy)
         {
-            if (!mSettings.has(SETTING_LEGACY_HAZE) || !mSettings[SETTING_LEGACY_HAZE].has(SETTING_AMBIENT))
-            {
-                // Special case since SETTING_AMBIENT is both in outer and legacy maps, we prioritize legacy one
-                // see getAmbientColor(), we are about to replaceSettings(), so we are free to set it
-                setAmbientColor(getAmbientColor());
-            }
+            a = lerp(a, b, mix);
         }
         else
         {
-            if (mSettings.has(SETTING_LEGACY_HAZE) && mSettings[SETTING_LEGACY_HAZE].has(SETTING_AMBIENT))
-            {
-                // Special case due to ambient's duality
-                // We need to match 'other's' structure for interpolation.
-                // We are free to change mSettings, since we are about to reset it
-                mSettings[SETTING_AMBIENT] = getAmbientColor().getValue();
-                mSettings[SETTING_LEGACY_HAZE].erase(SETTING_AMBIENT);
-            }
+            a = lerp(def, b, mix);
+            a_has_legacy = true;
         }
+    }
+    else if (!a_has_legacy)
+    {
+        a = lerp(a, b, mix);
+    }
+    else
+    {
+        a = lerp(a, def, mix);
+    }
+    return a_has_legacy;
+}
 
+void LLSettingsSky::blend(LLSettingsBase::ptr_t &end, F64 blendf)
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_ENVIRONMENT;
+    llassert(getSettingsType() == end->getSettingsType());
+
+    LLSettingsSky::ptr_t other = PTR_NAMESPACE::dynamic_pointer_cast<LLSettingsSky>(end);
+    if (other)
+    {
         LLUUID cloud_noise_id = getCloudNoiseTextureId();
         LLUUID cloud_noise_id_next = other->getCloudNoiseTextureId();
-        F64 cloud_shadow = 0;
         if (!cloud_noise_id.isNull() && cloud_noise_id_next.isNull())
         {
             // If there is no cloud texture in destination, reduce coverage to imitate disappearance
             // See LLDrawPoolWLSky::renderSkyClouds... we don't blend present texture with null
             // Note: Probably can be done by shader
-            cloud_shadow = lerp((F32)mSettings[SETTING_CLOUD_SHADOW].asReal(), 0.f, (F32)blendf);
+            mCloudShadow = lerp(mCloudShadow, 0.f, (F32)blendf);
             cloud_noise_id_next = cloud_noise_id;
         }
         else if (cloud_noise_id.isNull() && !cloud_noise_id_next.isNull())
         {
             // Source has no cloud texture, reduce initial coverage to imitate appearance
             // use same texture as destination
-            cloud_shadow = lerp(0.f, (F32)other->mSettings[SETTING_CLOUD_SHADOW].asReal(), (F32)blendf);
+            mCloudShadow = lerp(0.f, mCloudShadow, (F32)blendf);
             setCloudNoiseTextureId(cloud_noise_id_next);
         }
         else
         {
-            cloud_shadow = lerp((F32)mSettings[SETTING_CLOUD_SHADOW].asReal(), (F32)other->mSettings[SETTING_CLOUD_SHADOW].asReal(), (F32)blendf);
+            mCloudShadow = lerp(mCloudShadow, (F32)other->mCloudShadow, (F32)blendf);
+        }
+
+        mSettingFlags |= other->mSettingFlags;
+
+        mCanAutoAdjust = false; // no point?
+
+        mSunRotation = slerp((F32)blendf, mSunRotation, other->mSunRotation);
+        mMoonRotation = slerp((F32)blendf, mMoonRotation, other->mMoonRotation);
+        lerpColor(mSunlightColor, other->mSunlightColor, (F32)blendf);
+        lerpColor(mGlow, other->mGlow, (F32)blendf);
+        mReflectionProbeAmbiance = lerp(mReflectionProbeAmbiance, other->mReflectionProbeAmbiance, (F32)blendf);
+        mSunScale = lerp(mSunScale, other->mSunScale, (F32)blendf);
+        mStarBrightness = lerp(mStarBrightness, other->mStarBrightness, (F32)blendf);
+        mMoonBrightness = lerp(mMoonBrightness, other->mMoonBrightness, (F32)blendf);
+        mMoonScale = lerp(mMoonScale, other->mMoonScale, (F32)blendf);
+        mMaxY = lerp(mMaxY, other->mMaxY, (F32)blendf);
+        mGamma = lerp(mGamma, other->mGamma, (F32)blendf);
+        mCloudVariance = lerp(mCloudVariance, other->mCloudVariance, (F32)blendf);
+        mCloudShadow = lerp(mCloudShadow, other->mCloudShadow, (F32)blendf);
+        mCloudScale = lerp(mCloudScale, other->mCloudScale, (F32)blendf);
+        lerpVector2(mScrollRate, other->mScrollRate, (F32)blendf);
+        lerpColor(mCloudPosDensity1, other->mCloudPosDensity1, (F32)blendf);
+        lerpColor(mCloudPosDensity2, other->mCloudPosDensity2, (F32)blendf);
+        lerpColor(mCloudColor, other->mCloudColor, (F32)blendf);
+
+        mSunArcRadians = lerp(mSunArcRadians, other->mSunArcRadians, (F32)blendf);
+        mSkyTopRadius = lerp(mSkyTopRadius, other->mSkyTopRadius, (F32)blendf);
+        mSkyBottomRadius = lerp(mSkyBottomRadius, other->mSkyBottomRadius, (F32)blendf);
+        mSkyMoistureLevel = lerp(mSkyMoistureLevel, other->mSkyMoistureLevel, (F32)blendf);
+        mSkyDropletRadius = lerp(mSkyDropletRadius, other->mSkyDropletRadius, (F32)blendf);
+        mSkyIceLevel = lerp(mSkyIceLevel, other->mSkyIceLevel, (F32)blendf);
+        mPlanetRadius = lerp(mPlanetRadius, other->mPlanetRadius, (F32)blendf);
+
+        // Legacy settings
+
+        if (other->mHasLegacyHaze)
+        {
+            if (!mHasLegacyHaze || !mLegacyAmbientColor)
+            {
+                // Special case since SETTING_AMBIENT is both in outer and legacy maps,
+                // we prioritize legacy one
+                setAmbientColor(other->getAmbientColor());
+                mLegacyAmbientColor = true;
+                mHasLegacyHaze = true;
+            }
+        }
+        else
+        {
+            if (mLegacyAmbientColor)
+            {
+                // Special case due to ambient's duality
+                mLegacyAmbientColor = false;
+            }
         }
 
-        LLSD blenddata = interpolateSDMap(mSettings, other->mSettings, other->getParameterMap(), blendf);
-        blenddata[SETTING_CLOUD_SHADOW] = LLSD::Real(cloud_shadow);
-        replaceSettings(blenddata);
+        mHasLegacyHaze |= lerp_legacy_float(mHazeHorizon, mLegacyHazeHorizon, other->mHazeHorizon, other->mLegacyHazeHorizon, 0.19f, (F32)blendf);
+        mHasLegacyHaze |= lerp_legacy_float(mHazeDensity, mLegacyHazeDensity, other->mHazeDensity, other->mLegacyHazeDensity, 0.7f, (F32)blendf);
+        mHasLegacyHaze |= lerp_legacy_float(mDistanceMultiplier, mLegacyDistanceMultiplier, other->mDistanceMultiplier, other->mLegacyDistanceMultiplier, 0.8f, (F32)blendf);
+        mHasLegacyHaze |= lerp_legacy_float(mDensityMultiplier, mLegacyDensityMultiplier, other->mDensityMultiplier, other->mLegacyDensityMultiplier, 0.0001f, (F32)blendf);
+        mHasLegacyHaze |= lerp_legacy_color(mBlueHorizon, mLegacyBlueHorizon, other->mBlueHorizon, other->mLegacyBlueHorizon, LLColor3(0.4954f, 0.4954f, 0.6399f), (F32)blendf);
+        mHasLegacyHaze |= lerp_legacy_color(mBlueDensity, mLegacyBlueDensity, other->mBlueDensity, other->mLegacyBlueDensity, LLColor3(0.2447f, 0.4487f, 0.7599f), (F32)blendf);
+
+        parammapping_t defaults = other->getParameterMap();
+        stringset_t skip = getSkipInterpolateKeys();
+        stringset_t slerps = getSlerpKeys();
+        mAbsorptionConfigs = interpolateSDMap(mAbsorptionConfigs, other->mAbsorptionConfigs, defaults, blendf, skip, slerps);
+        mMieConfigs = interpolateSDMap(mMieConfigs, other->mMieConfigs, defaults, blendf, skip, slerps);
+        mRayleighConfigs = interpolateSDMap(mRayleighConfigs, other->mRayleighConfigs, defaults, blendf, skip, slerps);
+
+        setDirtyFlag(true);
+        setReplaced();
+        setLLSDDirty();
+
         mNextSunTextureId = other->getSunTextureId();
         mNextMoonTextureId = other->getMoonTextureId();
         mNextCloudTextureId = cloud_noise_id_next;
@@ -955,6 +1127,184 @@ void LLSettingsSky::updateSettings()
     calculateLightSettings();
 }
 
+
+F32 get_float(bool &use_legacy, LLSD& settings, std::string key, F32 default_value)
+{
+    if (settings.has(LLSettingsSky::SETTING_LEGACY_HAZE) && settings[LLSettingsSky::SETTING_LEGACY_HAZE].has(key))
+    {
+        use_legacy = true;
+        return (F32)settings[LLSettingsSky::SETTING_LEGACY_HAZE][key].asReal();
+    }
+    if (settings.has(key))
+    {
+        return (F32)settings[key].asReal();
+    }
+    use_legacy = true;
+    return default_value;
+}
+
+LLColor3 get_color(bool& use_legacy, LLSD& settings, const std::string& key, const LLColor3& default_value)
+{
+    if (settings.has(LLSettingsSky::SETTING_LEGACY_HAZE) && settings[LLSettingsSky::SETTING_LEGACY_HAZE].has(key))
+    {
+        use_legacy = true;
+        return LLColor3(settings[LLSettingsSky::SETTING_LEGACY_HAZE][key]);
+    }
+    use_legacy = false;
+    if (settings.has(key))
+    {
+        return LLColor3(settings[key]);
+    }
+    use_legacy = true;
+    return default_value;
+}
+
+
+void LLSettingsSky::loadValuesFromLLSD()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_ENVIRONMENT;
+
+    LLSettingsBase::loadValuesFromLLSD();
+
+    LLSD& settings = getSettings();
+    mCanAutoAdjust = !settings.has(SETTING_REFLECTION_PROBE_AMBIANCE);
+    if (mCanAutoAdjust)
+    {
+        mReflectionProbeAmbiance = 0;
+    }
+    else
+    {
+        mReflectionProbeAmbiance = (F32)settings[SETTING_REFLECTION_PROBE_AMBIANCE].asReal();
+    }
+
+    mSunTextureId = settings[SETTING_SUN_TEXTUREID].asUUID();
+    mMoonTextureId = settings[SETTING_MOON_TEXTUREID].asUUID();
+    mCloudTextureId = settings[SETTING_CLOUD_TEXTUREID].asUUID();
+    mHaloTextureId = settings[SETTING_HALO_TEXTUREID].asUUID();
+    mRainbowTextureId = settings[SETTING_RAINBOW_TEXTUREID].asUUID();
+    mBloomTextureId = settings[SETTING_BLOOM_TEXTUREID].asUUID();
+
+    mSunScale = (F32)settings[SETTING_SUN_SCALE].asReal();
+    mSunRotation = LLQuaternion(settings[SETTING_SUN_ROTATION]);
+    mSunlightColor = LLColor3(settings[SETTING_SUNLIGHT_COLOR]);
+    mStarBrightness = (F32)settings[SETTING_STAR_BRIGHTNESS].asReal();
+    mMoonBrightness = (F32)settings[SETTING_MOON_BRIGHTNESS].asReal();
+    mMoonScale = (F32)settings[SETTING_MOON_SCALE].asReal();
+    mMoonRotation = LLQuaternion(settings[SETTING_MOON_ROTATION]);
+    mMaxY = (F32)settings[SETTING_MAX_Y].asReal();
+    mGlow = LLColor3(settings[SETTING_GLOW]);
+    mGamma = (F32)settings[SETTING_GAMMA].asReal();
+    mCloudVariance = (F32)settings[SETTING_CLOUD_VARIANCE].asReal();
+    mCloudShadow = (F32)settings[SETTING_CLOUD_SHADOW].asReal();
+    mScrollRate = LLVector2(settings[SETTING_CLOUD_SCROLL_RATE]);
+    mCloudScale = (F32)settings[SETTING_CLOUD_SCALE].asReal();
+    mCloudPosDensity1 = LLColor3(settings[SETTING_CLOUD_POS_DENSITY1]);
+    mCloudPosDensity2 = LLColor3(settings[SETTING_CLOUD_POS_DENSITY2]);
+    mCloudColor = LLColor3(settings[SETTING_CLOUD_COLOR]);
+    mAbsorptionConfigs = settings[SETTING_ABSORPTION_CONFIG];
+    mMieConfigs = settings[SETTING_MIE_CONFIG];
+    mRayleighConfigs = settings[SETTING_RAYLEIGH_CONFIG];
+    mSunArcRadians = (F32)settings[SETTING_SUN_ARC_RADIANS].asReal();
+    mSkyTopRadius = (F32)settings[SETTING_SKY_TOP_RADIUS].asReal();
+    mSkyBottomRadius = (F32)settings[SETTING_SKY_BOTTOM_RADIUS].asReal();
+    mSkyMoistureLevel = (F32)settings[SETTING_SKY_MOISTURE_LEVEL].asReal();
+    mSkyDropletRadius = (F32)settings[SETTING_SKY_DROPLET_RADIUS].asReal();
+    mSkyIceLevel = (F32)settings[SETTING_SKY_ICE_LEVEL].asReal();
+    mPlanetRadius = (F32)settings[SETTING_PLANET_RADIUS].asReal();
+
+    // special case for legacy handling
+    mHasLegacyHaze = settings.has(LLSettingsSky::SETTING_LEGACY_HAZE);
+    mDistanceMultiplier = get_float(mLegacyDistanceMultiplier, settings, SETTING_DISTANCE_MULTIPLIER, 0.8f);
+    mDensityMultiplier = get_float(mLegacyDensityMultiplier, settings, SETTING_DENSITY_MULTIPLIER, 0.0001f);
+    mHazeHorizon = get_float(mLegacyHazeHorizon, settings, SETTING_HAZE_HORIZON, 0.19f);
+    mHazeDensity = get_float(mLegacyHazeDensity, settings, SETTING_HAZE_DENSITY, 0.7f);
+    mBlueHorizon = get_color(mLegacyBlueHorizon, settings, SETTING_BLUE_HORIZON, LLColor3(0.4954f, 0.4954f, 0.6399f));
+    mBlueDensity = get_color(mLegacyBlueDensity, settings, SETTING_BLUE_DENSITY, LLColor3(0.2447f, 0.4487f, 0.7599f));
+    mAmbientColor = get_color(mLegacyAmbientColor, settings, SETTING_AMBIENT, LLColor3(0.25f, 0.25f, 0.25f));
+    // one of these values might be true despite not having SETTING_LEGACY_HAZE if defaults were used
+    mHasLegacyHaze |= mLegacyDistanceMultiplier
+                      || mLegacyDensityMultiplier
+                      || mLegacyHazeHorizon
+                      || mLegacyHazeDensity
+                      || mLegacyBlueHorizon
+                      || mLegacyBlueDensity
+                      || mLegacyAmbientColor;
+}
+
+void set_legacy(LLSD &settings, LLSD &legacy, const std::string& key, bool has_value, const LLSD & value)
+{
+    if (has_value)
+    {
+        legacy[key] = value;
+    }
+    else
+    {
+        settings[key] = value;
+        legacy.erase(key);
+    }
+}
+
+void LLSettingsSky::saveValuesToLLSD()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_ENVIRONMENT;
+
+    LLSettingsBase::saveValuesToLLSD();
+
+    LLSD& settings = getSettings();
+
+    if (mCanAutoAdjust)
+    {
+        settings.erase(SETTING_REFLECTION_PROBE_AMBIANCE);
+    }
+    else
+    {
+        settings[SETTING_REFLECTION_PROBE_AMBIANCE] = mReflectionProbeAmbiance;
+    }
+    settings[SETTING_SUN_TEXTUREID] = mSunTextureId;
+    settings[SETTING_MOON_TEXTUREID] = mMoonTextureId;
+    settings[SETTING_CLOUD_TEXTUREID] = mCloudTextureId;
+    settings[SETTING_HALO_TEXTUREID] = mHaloTextureId;
+    settings[SETTING_RAINBOW_TEXTUREID] = mRainbowTextureId;
+    settings[SETTING_BLOOM_TEXTUREID] = mBloomTextureId;
+
+    settings[SETTING_SUN_SCALE] = mSunScale;
+    settings[SETTING_SUN_ROTATION] = mSunRotation.getValue();
+    settings[SETTING_SUNLIGHT_COLOR] = mSunlightColor.getValue();
+    settings[SETTING_STAR_BRIGHTNESS] = mStarBrightness;
+    settings[SETTING_MOON_BRIGHTNESS] = mMoonBrightness;
+    settings[SETTING_MOON_SCALE] = mMoonScale;
+    settings[SETTING_MOON_ROTATION] = mMoonRotation.getValue();
+    settings[SETTING_MAX_Y] = mMaxY;
+    settings[SETTING_GLOW] = mGlow.getValue();
+    settings[SETTING_GAMMA] = mGamma;
+    settings[SETTING_CLOUD_VARIANCE] = mCloudVariance;
+    settings[SETTING_CLOUD_SHADOW] = mCloudShadow;
+    settings[SETTING_CLOUD_SCROLL_RATE] = mScrollRate.getValue();
+    settings[SETTING_CLOUD_SCALE] = mCloudScale;
+    settings[SETTING_CLOUD_POS_DENSITY1] = mCloudPosDensity1.getValue();
+    settings[SETTING_CLOUD_POS_DENSITY2] = mCloudPosDensity2.getValue();
+    settings[SETTING_CLOUD_COLOR] = mCloudColor.getValue();
+    settings[SETTING_ABSORPTION_CONFIG] = mAbsorptionConfigs;
+    settings[SETTING_MIE_CONFIG] = mMieConfigs;
+    settings[SETTING_RAYLEIGH_CONFIG] = mRayleighConfigs;
+    settings[SETTING_SUN_ARC_RADIANS] = mSunArcRadians;
+    settings[SETTING_SKY_TOP_RADIUS] = mSkyTopRadius;
+    settings[SETTING_SKY_BOTTOM_RADIUS] = mSkyBottomRadius;
+    settings[SETTING_SKY_MOISTURE_LEVEL] = mSkyMoistureLevel;
+    settings[SETTING_SKY_DROPLET_RADIUS] = mSkyDropletRadius;
+    settings[SETTING_SKY_ICE_LEVEL] = mSkyIceLevel;
+    settings[SETTING_PLANET_RADIUS] = mPlanetRadius;
+
+    LLSD& legacy = settings[SETTING_LEGACY_HAZE];
+    set_legacy(settings, legacy, SETTING_DISTANCE_MULTIPLIER, mLegacyDistanceMultiplier, LLSD::Real(mDistanceMultiplier));
+    set_legacy(settings, legacy, SETTING_DENSITY_MULTIPLIER, mLegacyDensityMultiplier, LLSD::Real(mDensityMultiplier));
+    set_legacy(settings, legacy, SETTING_HAZE_HORIZON, mLegacyHazeHorizon, LLSD::Real(mHazeHorizon));
+    set_legacy(settings, legacy, SETTING_HAZE_DENSITY, mLegacyHazeDensity, LLSD::Real(mHazeDensity));
+    set_legacy(settings, legacy, SETTING_BLUE_HORIZON, mLegacyBlueHorizon, mBlueHorizon.getValue());
+    set_legacy(settings, legacy, SETTING_BLUE_DENSITY, mLegacyBlueDensity, mBlueDensity.getValue());
+    set_legacy(settings, legacy, SETTING_AMBIENT, mLegacyAmbientColor, mAmbientColor.getValue());
+}
+
 F32 LLSettingsSky::getSunMoonGlowFactor() const
 {
     return getIsSunUp()  ? 1.0f  :
@@ -1024,37 +1374,40 @@ LLColor3 LLSettingsSky::getLightDiffuse() const
     return LLColor3::white;
 }
 
-LLColor3 LLSettingsSky::getColor(const std::string& key, const LLColor3& default_value) const
+LLColor3 LLSettingsSky::getColor(const std::string& key, const LLColor3& default_value)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_ENVIRONMENT;
-    if (mSettings.has(SETTING_LEGACY_HAZE) && mSettings[SETTING_LEGACY_HAZE].has(key))
+    LLSD& settings = getSettings();
+    if (settings.has(SETTING_LEGACY_HAZE) && settings[SETTING_LEGACY_HAZE].has(key))
     {
-        return LLColor3(mSettings[SETTING_LEGACY_HAZE][key]);
+        return LLColor3(settings[SETTING_LEGACY_HAZE][key]);
     }
-    if (mSettings.has(key))
+    if (settings.has(key))
     {
-        return LLColor3(mSettings[key]);
+        return LLColor3(settings[key]);
     }
     return default_value;
 }
 
-F32 LLSettingsSky::getFloat(const std::string& key, F32 default_value) const
+F32 LLSettingsSky::getFloat(const std::string& key, F32 default_value)
 {
     LL_PROFILE_ZONE_SCOPED_CATEGORY_ENVIRONMENT;
-    if (mSettings.has(SETTING_LEGACY_HAZE) && mSettings[SETTING_LEGACY_HAZE].has(key))
+
+    LLSD& settings = getSettings();
+    if (settings.has(SETTING_LEGACY_HAZE) && settings[SETTING_LEGACY_HAZE].has(key))
     {
-        return (F32)mSettings[SETTING_LEGACY_HAZE][key].asReal();
+        return (F32)settings[SETTING_LEGACY_HAZE][key].asReal();
     }
-    if (mSettings.has(key))
+    if (settings.has(key))
     {
-        return (F32)mSettings[key].asReal();
+        return (F32)settings[key].asReal();
     }
     return default_value;
 }
 
 LLColor3 LLSettingsSky::getAmbientColor() const
 {
-    return getColor(SETTING_AMBIENT, LLColor3(0.25f, 0.25f, 0.25f));
+    return mAmbientColor;
 }
 
 LLColor3 LLSettingsSky::getAmbientColorClamped() const
@@ -1072,119 +1425,143 @@ LLColor3 LLSettingsSky::getAmbientColorClamped() const
 
 LLColor3 LLSettingsSky::getBlueDensity() const
 {
-    return getColor(SETTING_BLUE_DENSITY, LLColor3(0.2447f, 0.4487f, 0.7599f));
+    return mBlueDensity;
 }
 
 LLColor3 LLSettingsSky::getBlueHorizon() const
 {
-    return getColor(SETTING_BLUE_HORIZON, LLColor3(0.4954f, 0.4954f, 0.6399f));
+    return mBlueHorizon;
 }
 
 F32 LLSettingsSky::getHazeDensity() const
 {
-    return getFloat(SETTING_HAZE_DENSITY, 0.7f);
+    return mHazeDensity;
 }
 
 F32 LLSettingsSky::getHazeHorizon() const
 {
-    return getFloat(SETTING_HAZE_HORIZON, 0.19f);
+    return mHazeHorizon;
 }
 
 F32 LLSettingsSky::getDensityMultiplier() const
 {
-    return getFloat(SETTING_DENSITY_MULTIPLIER, 0.0001f);
+    return mDensityMultiplier;
 }
 
 F32 LLSettingsSky::getDistanceMultiplier() const
 {
-    return getFloat(SETTING_DISTANCE_MULTIPLIER, 0.8f);
+    return mDistanceMultiplier;
 }
 
 void LLSettingsSky::setPlanetRadius(F32 radius)
 {
-    mSettings[SETTING_PLANET_RADIUS] = radius;
+    mPlanetRadius = radius;
+    setDirtyFlag(true);
 }
 
 void LLSettingsSky::setSkyBottomRadius(F32 radius)
 {
-    mSettings[SETTING_SKY_BOTTOM_RADIUS] = radius;
+    mSkyBottomRadius = radius;
+    setDirtyFlag(true);
 }
 
 void LLSettingsSky::setSkyTopRadius(F32 radius)
 {
-    mSettings[SETTING_SKY_TOP_RADIUS] = radius;
+    mSkyTopRadius = radius;
+    setDirtyFlag(true);
 }
 
 void LLSettingsSky::setSunArcRadians(F32 radians)
 {
-    mSettings[SETTING_SUN_ARC_RADIANS] = radians;
+    mSunArcRadians = radians;
+    setDirtyFlag(true);
 }
 
 void LLSettingsSky::setMieAnisotropy(F32 aniso_factor)
 {
     getMieConfig()[SETTING_MIE_ANISOTROPY_FACTOR] = aniso_factor;
+    setDirtyFlag(true);
 }
 
 void LLSettingsSky::setSkyMoistureLevel(F32 moisture_level)
 {
-    setValue(SETTING_SKY_MOISTURE_LEVEL, moisture_level);
+    mSkyMoistureLevel = moisture_level;
+    setDirtyFlag(true);
 }
 
 void LLSettingsSky::setSkyDropletRadius(F32 radius)
 {
-    setValue(SETTING_SKY_DROPLET_RADIUS,radius);
+    mSkyDropletRadius = radius;
+    setDirtyFlag(true);
 }
 
 void LLSettingsSky::setSkyIceLevel(F32 ice_level)
 {
-    setValue(SETTING_SKY_ICE_LEVEL, ice_level);
+    mSkyIceLevel = ice_level;
+    setDirtyFlag(true);
 }
 
 void LLSettingsSky::setReflectionProbeAmbiance(F32 ambiance)
 {
-    setValue(SETTING_REFLECTION_PROBE_AMBIANCE, ambiance);
+    mReflectionProbeAmbiance = ambiance;
+    mCanAutoAdjust = false;
+    setLLSDDirty();
 }
 
 void LLSettingsSky::setAmbientColor(const LLColor3 &val)
 {
-    mSettings[SETTING_LEGACY_HAZE][SETTING_AMBIENT] = val.getValue();
+    mAmbientColor = val;
+    mLegacyAmbientColor = true;
     setDirtyFlag(true);
+    setLLSDDirty();
 }
 
 void LLSettingsSky::setBlueDensity(const LLColor3 &val)
 {
-    mSettings[SETTING_LEGACY_HAZE][SETTING_BLUE_DENSITY] = val.getValue();
+    mBlueDensity = val;
+    mLegacyBlueDensity = true;
     setDirtyFlag(true);
+    setLLSDDirty();
 }
 
 void LLSettingsSky::setBlueHorizon(const LLColor3 &val)
 {
-    mSettings[SETTING_LEGACY_HAZE][SETTING_BLUE_HORIZON] = val.getValue();
+    mBlueHorizon = val;
+    mLegacyBlueHorizon = true;
     setDirtyFlag(true);
+    setLLSDDirty();
 }
 
 void LLSettingsSky::setDensityMultiplier(F32 val)
 {
-    mSettings[SETTING_LEGACY_HAZE][SETTING_DENSITY_MULTIPLIER] = val;
+    mDensityMultiplier = val;
+    mLegacyDensityMultiplier = true;
     setDirtyFlag(true);
+    setLLSDDirty();
 }
 
 void LLSettingsSky::setDistanceMultiplier(F32 val)
 {
-    mSettings[SETTING_LEGACY_HAZE][SETTING_DISTANCE_MULTIPLIER] = val;
+    mDistanceMultiplier = val;
+    mLegacyDistanceMultiplier = true;
     setDirtyFlag(true);
+    setLLSDDirty();
 }
 
 void LLSettingsSky::setHazeDensity(F32 val)
 {
-    mSettings[SETTING_LEGACY_HAZE][SETTING_HAZE_DENSITY] = val;
+    mHazeDensity = val;
+    mLegacyHazeDensity = true;
     setDirtyFlag(true);
+    setLLSDDirty();
 }
 
 void LLSettingsSky::setHazeHorizon(F32 val)
 {
-    mSettings[SETTING_LEGACY_HAZE][SETTING_HAZE_HORIZON] = val;
+    mHazeHorizon = val;
+    mLegacyHazeHorizon = true;
     setDirtyFlag(true);
+    setLLSDDirty();
 }
 
 // Get total from rayleigh and mie density values for normalization
@@ -1299,7 +1676,7 @@ LLColor3 LLSettingsSky::getMoonlightColor() const
     return getSunlightColor(); //moon and sun share light color
 }
 
-void LLSettingsSky::clampColor(LLColor3& color, F32 gamma, F32 scale) const
+void LLSettingsSky::clampColor(LLColor3& color, F32 gamma, F32 scale)
 {
     F32 max_color = llmax(color.mV[0], color.mV[1], color.mV[2]);
     if (max_color > scale)
@@ -1415,22 +1792,22 @@ LLUUID LLSettingsSky::GetDefaultHaloTextureId()
 
 F32 LLSettingsSky::getPlanetRadius() const
 {
-    return (F32)mSettings[SETTING_PLANET_RADIUS].asReal();
+    return mPlanetRadius;
 }
 
 F32 LLSettingsSky::getSkyMoistureLevel() const
 {
-    return (F32)mSettings[SETTING_SKY_MOISTURE_LEVEL].asReal();
+    return mSkyMoistureLevel;
 }
 
 F32 LLSettingsSky::getSkyDropletRadius() const
 {
-    return (F32)mSettings[SETTING_SKY_DROPLET_RADIUS].asReal();
+    return mSkyDropletRadius;
 }
 
 F32 LLSettingsSky::getSkyIceLevel() const
 {
-    return (F32)mSettings[SETTING_SKY_ICE_LEVEL].asReal();
+    return mSkyIceLevel;
 }
 
 F32 LLSettingsSky::getReflectionProbeAmbiance(bool auto_adjust) const
@@ -1440,22 +1817,22 @@ F32 LLSettingsSky::getReflectionProbeAmbiance(bool auto_adjust) const
         return sAutoAdjustProbeAmbiance;
     }
 
-    return (F32)mSettings[SETTING_REFLECTION_PROBE_AMBIANCE].asReal();
+    return mReflectionProbeAmbiance;
 }
 
 F32 LLSettingsSky::getSkyBottomRadius() const
 {
-    return (F32)mSettings[SETTING_SKY_BOTTOM_RADIUS].asReal();
+    return mSkyBottomRadius;
 }
 
 F32 LLSettingsSky::getSkyTopRadius() const
 {
-    return (F32)mSettings[SETTING_SKY_TOP_RADIUS].asReal();
+    return mSkyTopRadius;
 }
 
 F32 LLSettingsSky::getSunArcRadians() const
 {
-    return (F32)mSettings[SETTING_SUN_ARC_RADIANS].asReal();
+    return mSunArcRadians;
 }
 
 F32 LLSettingsSky::getMieAnisotropy() const
@@ -1465,158 +1842,171 @@ F32 LLSettingsSky::getMieAnisotropy() const
 
 LLSD LLSettingsSky::getRayleighConfig() const
 {
-    LLSD copy = *(mSettings[SETTING_RAYLEIGH_CONFIG].beginArray());
+    LLSD copy = *(mRayleighConfigs.beginArray());
     return copy;
 }
 
 LLSD LLSettingsSky::getMieConfig() const
 {
-    LLSD copy = *(mSettings[SETTING_MIE_CONFIG].beginArray());
+    LLSD copy = *(mMieConfigs.beginArray());
     return copy;
 }
 
 LLSD LLSettingsSky::getAbsorptionConfig() const
 {
-    LLSD copy = *(mSettings[SETTING_ABSORPTION_CONFIG].beginArray());
+    LLSD copy = *(mAbsorptionConfigs.beginArray());
     return copy;
 }
 
 LLSD LLSettingsSky::getRayleighConfigs() const
 {
-    return mSettings[SETTING_RAYLEIGH_CONFIG];
+    return mRayleighConfigs;
 }
 
 LLSD LLSettingsSky::getMieConfigs() const
 {
-    return mSettings[SETTING_MIE_CONFIG];
+    return mMieConfigs;
 }
 
 LLSD LLSettingsSky::getAbsorptionConfigs() const
 {
-    return mSettings[SETTING_ABSORPTION_CONFIG];
+    return mAbsorptionConfigs;
 }
 
 void LLSettingsSky::setRayleighConfigs(const LLSD& rayleighConfig)
 {
-    mSettings[SETTING_RAYLEIGH_CONFIG] = rayleighConfig;
+    mRayleighConfigs = rayleighConfig;
+    setLLSDDirty();
 }
 
 void LLSettingsSky::setMieConfigs(const LLSD& mieConfig)
 {
-    mSettings[SETTING_MIE_CONFIG] = mieConfig;
+    mMieConfigs = mieConfig;
+    setLLSDDirty();
 }
 
 void LLSettingsSky::setAbsorptionConfigs(const LLSD& absorptionConfig)
 {
-    mSettings[SETTING_ABSORPTION_CONFIG] = absorptionConfig;
+    mAbsorptionConfigs = absorptionConfig;
+    setLLSDDirty();
 }
 
 LLUUID LLSettingsSky::getBloomTextureId() const
 {
-    return mSettings[SETTING_BLOOM_TEXTUREID].asUUID();
+    return mBloomTextureId;
 }
 
 LLUUID LLSettingsSky::getRainbowTextureId() const
 {
-    return mSettings[SETTING_RAINBOW_TEXTUREID].asUUID();
+    return mRainbowTextureId;
 }
 
 LLUUID LLSettingsSky::getHaloTextureId() const
 {
-    return mSettings[SETTING_HALO_TEXTUREID].asUUID();
+    return mHaloTextureId;
 }
 
 //---------------------------------------------------------------------
 LLColor3 LLSettingsSky::getCloudColor() const
 {
-    return LLColor3(mSettings[SETTING_CLOUD_COLOR]);
+    return mCloudColor;
 }
 
 void LLSettingsSky::setCloudColor(const LLColor3 &val)
 {
-    setValue(SETTING_CLOUD_COLOR, val);
+    mCloudColor = val;
+    setLLSDDirty();
 }
 
 LLUUID LLSettingsSky::getCloudNoiseTextureId() const
 {
-    return mSettings[SETTING_CLOUD_TEXTUREID].asUUID();
+    return mCloudTextureId;
 }
 
 void LLSettingsSky::setCloudNoiseTextureId(const LLUUID &id)
 {
-    setValue(SETTING_CLOUD_TEXTUREID, id);
+    mCloudTextureId = id;
+    setLLSDDirty();
 }
 
 LLColor3 LLSettingsSky::getCloudPosDensity1() const
 {
-    return LLColor3(mSettings[SETTING_CLOUD_POS_DENSITY1]);
+    return mCloudPosDensity1;
 }
 
 void LLSettingsSky::setCloudPosDensity1(const LLColor3 &val)
 {
-    setValue(SETTING_CLOUD_POS_DENSITY1, val);
+    mCloudPosDensity1 = val;
+    setLLSDDirty();
 }
 
 LLColor3 LLSettingsSky::getCloudPosDensity2() const
 {
-    return LLColor3(mSettings[SETTING_CLOUD_POS_DENSITY2]);
+    return mCloudPosDensity2;
 }
 
 void LLSettingsSky::setCloudPosDensity2(const LLColor3 &val)
 {
-    setValue(SETTING_CLOUD_POS_DENSITY2, val);
+    mCloudPosDensity2 = val;
+    setLLSDDirty();
 }
 
 F32 LLSettingsSky::getCloudScale() const
 {
-    return (F32)mSettings[SETTING_CLOUD_SCALE].asReal();
+    return mCloudScale;
 }
 
 void LLSettingsSky::setCloudScale(F32 val)
 {
-    setValue(SETTING_CLOUD_SCALE, val);
+    mCloudScale = val;
+    setLLSDDirty();
 }
 
 LLVector2 LLSettingsSky::getCloudScrollRate() const
 {
-    return LLVector2(mSettings[SETTING_CLOUD_SCROLL_RATE]);
+    return mScrollRate;
 }
 
 void LLSettingsSky::setCloudScrollRate(const LLVector2 &val)
 {
-    setValue(SETTING_CLOUD_SCROLL_RATE, val);
+    mScrollRate = val;
+    setLLSDDirty();
 }
 
 void LLSettingsSky::setCloudScrollRateX(F32 val)
 {
-    mSettings[SETTING_CLOUD_SCROLL_RATE][0] = val;
+    mScrollRate.mV[0] = val;
     setDirtyFlag(true);
+    setLLSDDirty();
 }
 
 void LLSettingsSky::setCloudScrollRateY(F32 val)
 {
-    mSettings[SETTING_CLOUD_SCROLL_RATE][1] = val;
+    mScrollRate.mV[1] = val;
     setDirtyFlag(true);
+    setLLSDDirty();
 }
 
 F32 LLSettingsSky::getCloudShadow() const
 {
-    return (F32)mSettings[SETTING_CLOUD_SHADOW].asReal();
+    return mCloudShadow;
 }
 
 void LLSettingsSky::setCloudShadow(F32 val)
 {
-    setValue(SETTING_CLOUD_SHADOW, val);
+    mCloudShadow = val;
+    setLLSDDirty();
 }
 
 F32 LLSettingsSky::getCloudVariance() const
 {
-    return (F32)mSettings[SETTING_CLOUD_VARIANCE].asReal();
+    return mCloudVariance;
 }
 
 void LLSettingsSky::setCloudVariance(F32 val)
 {
-    setValue(SETTING_CLOUD_VARIANCE, val);
+    mCloudVariance = val;
+    setLLSDDirty();
 }
 
 F32 LLSettingsSky::getDomeOffset() const
@@ -1633,88 +2023,95 @@ F32 LLSettingsSky::getDomeRadius() const
 
 F32 LLSettingsSky::getGamma() const
 {
-    return (F32)mSettings[SETTING_GAMMA].asReal();
+    return mGamma;
 }
 
 void LLSettingsSky::setGamma(F32 val)
 {
-    mSettings[SETTING_GAMMA] = LLSD::Real(val);
+    mGamma = val;
     setDirtyFlag(true);
+    setLLSDDirty();
 }
-
 LLColor3 LLSettingsSky::getGlow() const
 {
-    return LLColor3(mSettings[SETTING_GLOW]);
+    return mGlow;
 }
 
 void LLSettingsSky::setGlow(const LLColor3 &val)
 {
-    setValue(SETTING_GLOW, val);
+    mGlow = val;
+    setLLSDDirty();
 }
 
 F32 LLSettingsSky::getMaxY() const
 {
-    return (F32)mSettings[SETTING_MAX_Y].asReal();
+    return mMaxY;
 }
 
 void LLSettingsSky::setMaxY(F32 val)
 {
-    setValue(SETTING_MAX_Y, val);
+    mMaxY = val;
+    setLLSDDirty();
 }
 
 LLQuaternion LLSettingsSky::getMoonRotation() const
 {
-    return LLQuaternion(mSettings[SETTING_MOON_ROTATION]);
+    return mMoonRotation;
 }
 
 void LLSettingsSky::setMoonRotation(const LLQuaternion &val)
 {
-    setValue(SETTING_MOON_ROTATION, val);
+    mMoonRotation = val;
+    setLLSDDirty();
 }
 
 F32 LLSettingsSky::getMoonScale() const
 {
-    return (F32)mSettings[SETTING_MOON_SCALE].asReal();
+    return mMoonScale;
 }
 
 void LLSettingsSky::setMoonScale(F32 val)
 {
-    setValue(SETTING_MOON_SCALE, val);
+    mMoonScale = val;
+    setLLSDDirty();
 }
 
 LLUUID LLSettingsSky::getMoonTextureId() const
 {
-    return mSettings[SETTING_MOON_TEXTUREID].asUUID();
+    return mMoonTextureId;
 }
 
 void LLSettingsSky::setMoonTextureId(LLUUID id)
 {
-    setValue(SETTING_MOON_TEXTUREID, id);
+    mMoonTextureId = id;
+    setLLSDDirty();
 }
 
 F32 LLSettingsSky::getMoonBrightness() const
 {
-    return (F32)mSettings[SETTING_MOON_BRIGHTNESS].asReal();
+    return mMoonBrightness;
 }
 
 void LLSettingsSky::setMoonBrightness(F32 brightness_factor)
 {
-    setValue(SETTING_MOON_BRIGHTNESS, brightness_factor);
+    mMoonBrightness = brightness_factor;
+    setLLSDDirty();
 }
 
 F32 LLSettingsSky::getStarBrightness() const
 {
-    return (F32)mSettings[SETTING_STAR_BRIGHTNESS].asReal();
+    return mStarBrightness;
 }
 
 void LLSettingsSky::setStarBrightness(F32 val)
 {
-    setValue(SETTING_STAR_BRIGHTNESS, val);
+    mStarBrightness = val;
+    setLLSDDirty();
 }
 
 LLColor3 LLSettingsSky::getSunlightColor() const
 {
-    return LLColor3(mSettings[SETTING_SUNLIGHT_COLOR]);
+    return mSunlightColor;
 }
 
 LLColor3 LLSettingsSky::getSunlightColorClamped() const
@@ -1733,38 +2130,41 @@ LLColor3 LLSettingsSky::getSunlightColorClamped() const
 
 void LLSettingsSky::setSunlightColor(const LLColor3 &val)
 {
-    setValue(SETTING_SUNLIGHT_COLOR, val);
+    mSunlightColor = val;
+    setLLSDDirty();
 }
 
 LLQuaternion LLSettingsSky::getSunRotation() const
 {
-    return LLQuaternion(mSettings[SETTING_SUN_ROTATION]);
+    return mSunRotation;
 }
 
 void LLSettingsSky::setSunRotation(const LLQuaternion &val)
 {
-    setValue(SETTING_SUN_ROTATION, val);
+    mSunRotation = val;
+    setLLSDDirty();
 }
 
-
 F32 LLSettingsSky::getSunScale() const
 {
-    return (F32)mSettings[SETTING_SUN_SCALE].asReal();
+    return mSunScale;
 }
 
 void LLSettingsSky::setSunScale(F32 val)
 {
-    setValue(SETTING_SUN_SCALE, val);
+    mSunScale = val;
+    setLLSDDirty();
 }
 
 LLUUID LLSettingsSky::getSunTextureId() const
 {
-    return mSettings[SETTING_SUN_TEXTUREID].asUUID();
+    return mSunTextureId;
 }
 
 void LLSettingsSky::setSunTextureId(LLUUID id)
 {
-    setValue(SETTING_SUN_TEXTUREID, id);
+    mSunTextureId = id;
+    setLLSDDirty();
 }
 
 LLUUID LLSettingsSky::getNextSunTextureId() const
@@ -1790,5 +2190,5 @@ LLUUID LLSettingsSky::getNextBloomTextureId() const
 // if true, this sky is a candidate for auto-adjustment
 bool LLSettingsSky::canAutoAdjust() const
 {
-    return !mSettings.has(SETTING_REFLECTION_PROBE_AMBIANCE);
+    return mCanAutoAdjust;
 }
diff --git a/indra/llinventory/llsettingssky.h b/indra/llinventory/llsettingssky.h
index 40bb337a48..38c0368423 100644
--- a/indra/llinventory/llsettingssky.h
+++ b/indra/llinventory/llsettingssky.h
@@ -111,20 +111,24 @@ public:
     LLSettingsSky(const LLSD &data);
     virtual ~LLSettingsSky() { };
 
-    virtual ptr_t   buildClone() const = 0;
+    virtual ptr_t   buildClone() = 0;
 
     //---------------------------------------------------------------------
     virtual std::string getSettingsType() const SETTINGS_OVERRIDE { return std::string("sky"); }
     virtual LLSettingsType::type_e getSettingsTypeValue() const SETTINGS_OVERRIDE { return LLSettingsType::ST_SKY; }
 
     // Settings status
-    virtual void blend(const LLSettingsBase::ptr_t &end, F64 blendf) SETTINGS_OVERRIDE;
+    virtual void blend(LLSettingsBase::ptr_t &end, F64 blendf) SETTINGS_OVERRIDE;
 
     virtual void replaceSettings(LLSD settings) SETTINGS_OVERRIDE;
+    virtual void replaceSettings(const LLSettingsBase::ptr_t& other_sky) override;
 
-    void replaceWithSky(LLSettingsSky::ptr_t pother);
+    void replaceWithSky(const LLSettingsSky::ptr_t& pother);
     static LLSD defaults(const LLSettingsBase::TrackPosition& position = 0.0f);
 
+    void loadValuesFromLLSD() override;
+    void saveValuesToLLSD() override;
+
     F32 getPlanetRadius() const;
     F32 getSkyBottomRadius() const;
     F32 getSkyTopRadius() const;
@@ -306,7 +310,7 @@ public:
     LLColor3 getSunlightColorClamped() const;
     LLColor3 getAmbientColorClamped() const;
 
-    virtual LLSettingsBase::ptr_t buildDerivedClone() const SETTINGS_OVERRIDE { return buildClone(); }
+    virtual LLSettingsBase::ptr_t buildDerivedClone() SETTINGS_OVERRIDE { return buildClone(); }
 
     static LLUUID GetDefaultAssetId();
     static LLUUID GetDefaultSunTextureId();
@@ -348,6 +352,12 @@ protected:
     virtual stringset_t getSlerpKeys() const SETTINGS_OVERRIDE;
     virtual stringset_t getSkipInterpolateKeys() const SETTINGS_OVERRIDE;
 
+    LLUUID      mSunTextureId;
+    LLUUID      mMoonTextureId;
+    LLUUID      mCloudTextureId;
+    LLUUID      mBloomTextureId;
+    LLUUID      mRainbowTextureId;
+    LLUUID      mHaloTextureId;
     LLUUID      mNextSunTextureId;
     LLUUID      mNextMoonTextureId;
     LLUUID      mNextCloudTextureId;
@@ -355,17 +365,64 @@ protected:
     LLUUID      mNextRainbowTextureId;
     LLUUID      mNextHaloTextureId;
 
+    bool mCanAutoAdjust;
+    LLQuaternion mSunRotation;
+    LLQuaternion mMoonRotation;
+    LLColor3 mSunlightColor;
+    LLColor3 mGlow;
+    F32 mReflectionProbeAmbiance;
+    F32 mSunScale;
+    F32 mStarBrightness;
+    F32 mMoonBrightness;
+    F32 mMoonScale;
+    F32 mMaxY;
+    F32 mGamma;
+    F32 mCloudVariance;
+    F32 mCloudShadow;
+    F32 mCloudScale;
+    LLVector2 mScrollRate;
+    LLColor3 mCloudPosDensity1;
+    LLColor3 mCloudPosDensity2;
+    LLColor3 mCloudColor;
+    LLSD mAbsorptionConfigs;
+    LLSD mMieConfigs;
+    LLSD mRayleighConfigs;
+    F32 mSunArcRadians;
+    F32 mSkyTopRadius;
+    F32 mSkyBottomRadius;
+    F32 mSkyMoistureLevel;
+    F32 mSkyDropletRadius;
+    F32 mSkyIceLevel;
+    F32 mPlanetRadius;
+
+    F32 mHazeHorizon;
+    F32 mHazeDensity;
+    F32 mDistanceMultiplier;
+    F32 mDensityMultiplier;
+    LLColor3 mBlueHorizon;
+    LLColor3 mBlueDensity;
+    LLColor3 mAmbientColor;
+
+    bool mHasLegacyHaze;
+    bool mLegacyHazeHorizon;
+    bool mLegacyHazeDensity;
+    bool mLegacyDistanceMultiplier;
+    bool mLegacyDensityMultiplier;
+    bool mLegacyBlueHorizon;
+    bool mLegacyBlueDensity;
+    bool mLegacyAmbientColor;
+
 private:
     static LLSD rayleighConfigDefault();
     static LLSD absorptionConfigDefault();
     static LLSD mieConfigDefault();
 
-    LLColor3 getColor(const std::string& key, const LLColor3& default_value) const;
-    F32      getFloat(const std::string& key, F32 default_value) const;
+    LLColor3 getColor(const std::string& key, const LLColor3& default_value);
+    F32      getFloat(const std::string& key, F32 default_value);
 
     void        calculateHeavenlyBodyPositions() const;
     void        calculateLightSettings() const;
-    void        clampColor(LLColor3& color, F32 gamma, const F32 scale = 1.0f) const;
+    static void clampColor(LLColor3& color, F32 gamma, const F32 scale = 1.0f);
 
     mutable LLVector3   mSunDirection;
     mutable LLVector3   mMoonDirection;
diff --git a/indra/llinventory/llsettingswater.cpp b/indra/llinventory/llsettingswater.cpp
index 161b8cda25..08e18ea26e 100644
--- a/indra/llinventory/llsettingswater.cpp
+++ b/indra/llinventory/llsettingswater.cpp
@@ -68,14 +68,18 @@ static const LLUUID DEFAULT_OPAQUE_WATER_TEXTURE("43c32285-d658-1793-c123-bf8631
 //=========================================================================
 LLSettingsWater::LLSettingsWater(const LLSD &data) :
     LLSettingsBase(data),
-    mNextNormalMapID()
+    mNextNormalMapID(),
+    mNextTransparentTextureID()
 {
+    loadValuesFromLLSD();
 }
 
 LLSettingsWater::LLSettingsWater() :
     LLSettingsBase(),
-    mNextNormalMapID()
+    mNextNormalMapID(),
+    mNextTransparentTextureID()
 {
+    replaceSettings(defaults());
 }
 
 //=========================================================================
@@ -109,6 +113,53 @@ LLSD LLSettingsWater::defaults(const LLSettingsBase::TrackPosition& position)
     return dfltsetting;
 }
 
+void LLSettingsWater::loadValuesFromLLSD()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_ENVIRONMENT;
+
+    LLSettingsBase::loadValuesFromLLSD();
+
+    LLSD& settings = getSettings();
+
+    mBlurMultiplier = (F32)settings[SETTING_BLUR_MULTIPLIER].asReal();
+    mWaterFogColor = LLColor3(settings[SETTING_FOG_COLOR]);
+    mWaterFogDensity = (F32)settings[SETTING_FOG_DENSITY].asReal();
+    mFogMod = (F32)settings[SETTING_FOG_MOD].asReal();
+    mFresnelOffset = (F32)settings[SETTING_FRESNEL_OFFSET].asReal();
+    mFresnelScale = (F32)settings[SETTING_FRESNEL_SCALE].asReal();
+    mNormalScale = LLVector3(settings[SETTING_NORMAL_SCALE]);
+    mScaleAbove = (F32)settings[SETTING_SCALE_ABOVE].asReal();
+    mScaleBelow = (F32)settings[SETTING_SCALE_BELOW].asReal();
+    mWave1Dir = LLVector2(settings[SETTING_WAVE1_DIR]);
+    mWave2Dir = LLVector2(settings[SETTING_WAVE2_DIR]);
+
+    mNormalMapID = getNormalMapID();
+    mTransparentTextureID = getTransparentTextureID();
+}
+
+void LLSettingsWater::saveValuesToLLSD()
+{
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_ENVIRONMENT;
+
+    LLSettingsBase::saveValuesToLLSD();
+
+    LLSD & settings = getSettings();
+    settings[SETTING_BLUR_MULTIPLIER] = LLSD::Real(mBlurMultiplier);
+    settings[SETTING_FOG_COLOR] = mWaterFogColor.getValue();
+    settings[SETTING_FOG_DENSITY] = LLSD::Real(mWaterFogDensity);
+    settings[SETTING_FOG_MOD] = LLSD::Real(mFogMod);
+    settings[SETTING_FRESNEL_OFFSET] = LLSD::Real(mFresnelOffset);
+    settings[SETTING_FRESNEL_SCALE] = LLSD::Real(mFresnelScale);
+    settings[SETTING_NORMAL_SCALE] = mNormalScale.getValue();
+    settings[SETTING_SCALE_ABOVE] = LLSD::Real(mScaleAbove);
+    settings[SETTING_SCALE_BELOW] = LLSD::Real(mScaleBelow);
+    settings[SETTING_WAVE1_DIR] = mWave1Dir.getValue();
+    settings[SETTING_WAVE2_DIR] = mWave2Dir.getValue();
+
+    settings[SETTING_NORMAL_MAP] = mNormalMapID;
+    settings[SETTING_TRANSPARENT_TEXTURE] = mTransparentTextureID;
+}
+
 LLSD LLSettingsWater::translateLegacySettings(LLSD legacy)
 {
     bool converted_something(false);
@@ -180,13 +231,30 @@ LLSD LLSettingsWater::translateLegacySettings(LLSD legacy)
     return newsettings;
 }
 
-void LLSettingsWater::blend(const LLSettingsBase::ptr_t &end, F64 blendf)
+void LLSettingsWater::blend(LLSettingsBase::ptr_t &end, F64 blendf)
 {
+    LL_PROFILE_ZONE_SCOPED_CATEGORY_ENVIRONMENT;
     LLSettingsWater::ptr_t other = PTR_NAMESPACE::static_pointer_cast<LLSettingsWater>(end);
     if (other)
     {
-        LLSD blenddata = interpolateSDMap(mSettings, other->mSettings, other->getParameterMap(), blendf);
-        replaceSettings(blenddata);
+        mSettingFlags |= other->mSettingFlags;
+
+        mBlurMultiplier = lerp((F32)blendf, mBlurMultiplier, other->mBlurMultiplier);
+        lerpColor(mWaterFogColor, other->mWaterFogColor, (F32)blendf);
+        mWaterFogDensity = lerp((F32)blendf, mWaterFogDensity, other->mWaterFogDensity);
+        mFogMod = lerp((F32)blendf, mFogMod, other->mFogMod);
+        mFresnelOffset = lerp((F32)blendf, mFresnelOffset, other->mFresnelOffset);
+        mFresnelScale = lerp((F32)blendf, mFresnelScale, other->mFresnelScale);
+        lerpVector3(mNormalScale, other->mNormalScale, (F32)blendf);
+        mScaleAbove = lerp((F32)blendf, mScaleAbove, other->mScaleAbove);
+        mScaleBelow = lerp((F32)blendf, mScaleBelow, other->mScaleBelow);
+        lerpVector2(mWave1Dir, other->mWave1Dir, (F32)blendf);
+        lerpVector2(mWave2Dir, other->mWave2Dir, (F32)blendf);
+
+        setDirtyFlag(true);
+        setReplaced();
+        setLLSDDirty();
+
         mNextNormalMapID = other->getNormalMapID();
         mNextTransparentTextureID = other->getTransparentTextureID();
     }
@@ -204,7 +272,34 @@ void LLSettingsWater::replaceSettings(LLSD settings)
     mNextTransparentTextureID.setNull();
 }
 
-void LLSettingsWater::replaceWithWater(LLSettingsWater::ptr_t other)
+void LLSettingsWater::replaceSettings(const LLSettingsBase::ptr_t& other_water)
+{
+    LLSettingsBase::replaceSettings(other_water);
+
+    llassert(getSettingsType() == other_water->getSettingsType());
+
+    LLSettingsWater::ptr_t other = PTR_NAMESPACE::dynamic_pointer_cast<LLSettingsWater>(other_water);
+
+    mBlurMultiplier = other->mBlurMultiplier;
+    mWaterFogColor = other->mWaterFogColor;
+    mWaterFogDensity = other->mWaterFogDensity;
+    mFogMod = other->mFogMod;
+    mFresnelOffset = other->mFresnelOffset;
+    mFresnelScale = other->mFresnelScale;
+    mNormalScale = other->mNormalScale;
+    mScaleAbove = other->mScaleAbove;
+    mScaleBelow = other->mScaleBelow;
+    mWave1Dir = other->mWave1Dir;
+    mWave2Dir = other->mWave2Dir;
+
+    mNormalMapID = other->mNormalMapID;
+    mTransparentTextureID = other->mTransparentTextureID;
+
+    mNextNormalMapID.setNull();
+    mNextTransparentTextureID.setNull();
+}
+
+void LLSettingsWater::replaceWithWater(const LLSettingsWater::ptr_t& other)
 {
     replaceWith(other);
 
diff --git a/indra/llinventory/llsettingswater.h b/indra/llinventory/llsettingswater.h
index 9e7ff61272..82fc37cfb3 100644
--- a/indra/llinventory/llsettingswater.h
+++ b/indra/llinventory/llsettingswater.h
@@ -55,151 +55,181 @@ public:
     LLSettingsWater(const LLSD &data);
     virtual ~LLSettingsWater() { };
 
-    virtual ptr_t   buildClone() const = 0;
+    virtual ptr_t   buildClone() = 0;
 
     //---------------------------------------------------------------------
     virtual std::string     getSettingsType() const SETTINGS_OVERRIDE { return std::string("water"); }
     virtual LLSettingsType::type_e  getSettingsTypeValue() const SETTINGS_OVERRIDE { return LLSettingsType::ST_WATER; }
 
     // Settings status
-    virtual void blend(const LLSettingsBase::ptr_t &end, F64 blendf) SETTINGS_OVERRIDE;
+    virtual void blend(LLSettingsBase::ptr_t &end, F64 blendf) SETTINGS_OVERRIDE;
 
     virtual void replaceSettings(LLSD settings) SETTINGS_OVERRIDE;
-    void replaceWithWater(LLSettingsWater::ptr_t other);
+    virtual void replaceSettings(const LLSettingsBase::ptr_t& other_water) override;
+    void replaceWithWater(const LLSettingsWater::ptr_t& other);
 
     static LLSD defaults(const LLSettingsBase::TrackPosition& position = 0.0f);
 
+    void loadValuesFromLLSD() override;
+    void saveValuesToLLSD() override;
+
     //---------------------------------------------------------------------
     F32 getBlurMultiplier() const
     {
-        return (F32)mSettings[SETTING_BLUR_MULTIPLIER].asReal();
+        return mBlurMultiplier;
     }
 
     void setBlurMultiplier(F32 val)
     {
-        setValue(SETTING_BLUR_MULTIPLIER, val);
+        mBlurMultiplier = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     LLColor3 getWaterFogColor() const
     {
-        return LLColor3(mSettings[SETTING_FOG_COLOR]);
+        return mWaterFogColor;
     }
 
     void setWaterFogColor(LLColor3 val)
     {
-        setValue(SETTING_FOG_COLOR, val);
+        mWaterFogColor = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     F32 getWaterFogDensity() const
     {
-        return (F32)mSettings[SETTING_FOG_DENSITY].asReal();
+        return mWaterFogDensity;
     }
 
     F32 getModifiedWaterFogDensity(bool underwater) const;
 
     void setWaterFogDensity(F32 val)
     {
-        setValue(SETTING_FOG_DENSITY, val);
+        mWaterFogDensity = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     F32 getFogMod() const
     {
-        return (F32)mSettings[SETTING_FOG_MOD].asReal();
+        return mFogMod;
     }
 
     void setFogMod(F32 val)
     {
-        setValue(SETTING_FOG_MOD, val);
+        mFogMod = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     F32 getFresnelOffset() const
     {
-        return (F32)mSettings[SETTING_FRESNEL_OFFSET].asReal();
+        return mFresnelOffset;
     }
 
     void setFresnelOffset(F32 val)
     {
-        setValue(SETTING_FRESNEL_OFFSET, val);
+        mFresnelOffset = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     F32 getFresnelScale() const
     {
-        return (F32)mSettings[SETTING_FRESNEL_SCALE].asReal();
+        return mFresnelScale;
     }
 
     void setFresnelScale(F32 val)
     {
-        setValue(SETTING_FRESNEL_SCALE, val);
+        mFresnelScale = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     LLUUID getTransparentTextureID() const
     {
-        return mSettings[SETTING_TRANSPARENT_TEXTURE].asUUID();
+        return mTransparentTextureID;
     }
 
     void setTransparentTextureID(LLUUID val)
     {
-        setValue(SETTING_TRANSPARENT_TEXTURE, val);
+        mTransparentTextureID = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     LLUUID getNormalMapID() const
     {
-        return mSettings[SETTING_NORMAL_MAP].asUUID();
+        return mNormalMapID;
     }
 
     void setNormalMapID(LLUUID val)
     {
-        setValue(SETTING_NORMAL_MAP, val);
+        mNormalMapID = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     LLVector3 getNormalScale() const
     {
-        return LLVector3(mSettings[SETTING_NORMAL_SCALE]);
+        return mNormalScale;
     }
 
     void setNormalScale(LLVector3 val)
     {
-        setValue(SETTING_NORMAL_SCALE, val);
+        mNormalScale = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     F32 getScaleAbove() const
     {
-        return (F32)mSettings[SETTING_SCALE_ABOVE].asReal();
+        return mScaleAbove;
     }
 
     void setScaleAbove(F32 val)
     {
-        setValue(SETTING_SCALE_ABOVE, val);
+        mScaleAbove = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     F32 getScaleBelow() const
     {
-        return (F32)mSettings[SETTING_SCALE_BELOW].asReal();
+        return mScaleBelow;
     }
 
     void setScaleBelow(F32 val)
     {
-        setValue(SETTING_SCALE_BELOW, val);
+        mScaleBelow = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     LLVector2 getWave1Dir() const
     {
-        return LLVector2(mSettings[SETTING_WAVE1_DIR]);
+        return mWave1Dir;
     }
 
     void setWave1Dir(LLVector2 val)
     {
-        setValue(SETTING_WAVE1_DIR, val);
+        mWave1Dir = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     LLVector2 getWave2Dir() const
     {
-        return LLVector2(mSettings[SETTING_WAVE2_DIR]);
+        return mWave2Dir;
     }
 
     void setWave2Dir(LLVector2 val)
     {
-        setValue(SETTING_WAVE2_DIR, val);
+        mWave2Dir = val;
+        setDirtyFlag(true);
+        setLLSDDirty();
     }
 
     //-------------------------------------------
@@ -218,7 +248,7 @@ public:
 
     static LLSD         translateLegacySettings(LLSD legacy);
 
-    virtual LLSettingsBase::ptr_t buildDerivedClone() const SETTINGS_OVERRIDE { return buildClone(); }
+    virtual LLSettingsBase::ptr_t buildDerivedClone() SETTINGS_OVERRIDE { return buildClone(); }
 
     static LLUUID GetDefaultAssetId();
     static LLUUID GetDefaultWaterNormalAssetId();
@@ -241,9 +271,22 @@ protected:
 
     LLSettingsWater();
 
+    LLUUID    mTransparentTextureID;
+    LLUUID    mNormalMapID;
     LLUUID    mNextTransparentTextureID;
     LLUUID    mNextNormalMapID;
 
+    F32 mBlurMultiplier;
+    LLColor3 mWaterFogColor;
+    F32 mWaterFogDensity;
+    F32 mFogMod;
+    F32 mFresnelOffset;
+    F32 mFresnelScale;
+    LLVector3 mNormalScale;
+    F32 mScaleAbove;
+    F32 mScaleBelow;
+    LLVector2 mWave1Dir;
+    LLVector2 mWave2Dir;
 };
 
 #endif