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The previous implementation went to some effort to crash if anyone attempted
to create or destroy an LLInstanceTracker subclass instance during traversal.
That restriction is manageable within a single thread, but becomes unworkable
if it's possible that a given subclass might be used on more than one thread.
Remove LLInstanceTracker::instance_iter, beginInstances(), endInstances(),
also key_iter, beginKeys() and endKeys(). Instead, introduce key_snapshot()
and instance_snapshot(), the only means of iterating over LLInstanceTracker
instances. (These are intended to resemble functions, but in fact the current
implementation simply presents the classes.) Iterating over a captured
snapshot defends against container modifications during traversal. The term
'snapshot' reminds the coder that a new instance created during traversal will
not be considered. To defend against instance deletion during traversal, a
snapshot stores std::weak_ptrs which it lazily dereferences, skipping on the
fly any that have expired.
Dereferencing instance_snapshot::iterator gets you a reference rather than a
pointer. Because some use cases want to delete all existing instances, add an
instance_snapshot::deleteAll() method that extracts the pointer. Those cases
used to require explicitly copying instance pointers into a separate
container; instance_snapshot() now takes care of that. It remains the caller's
responsibility to ensure that all instances of that LLInstanceTracker subclass
were allocated on the heap.
Replace unkeyed static LLInstanceTracker::getInstance(T*) -- which returned
nullptr if that instance had been destroyed -- with new getWeak() method
returning std::weak_ptr<T>. Caller must detect expiration of that weak_ptr.
Adjust tests accordingly.
Use of std::weak_ptr to detect expired instances requires engaging
std::shared_ptr in the constructor. We now store shared_ptrs in the static
containers (std::map for keyed, std::set for unkeyed).
Make LLInstanceTrackerBase a template parameterized on the type of the static
data it manages. For that reason, hoist static data class declarations out of
the class definitions to an LLInstanceTrackerStuff namespace.
Remove the static atomic sIterationNestDepth and its methods incrementDepth(),
decrementDepth() and getDepth(), since they were used only to forbid creation
and destruction during traversal.
Add a std::mutex to static data. Introduce an internal LockStatic class that
locks the mutex while providing a pointer to static data, making that the only
way to access the static data.
The LLINSTANCETRACKER_DTOR_NOEXCEPT macro goes away because we no longer
expect ~LLInstanceTracker() to throw an exception in test programs.
That affects LLTrace::StatBase as well as LLInstanceTracker itself.
Adapt consumers to the new LLInstanceTracker API.
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Moderately often I want to copy the (long) integration test program path from
build output and rerun the test program by hand. But typically we need
environment variables set as well so it can find its dynamic libraries. This
has resulted in my copying parts of several lines of build output, then
pasting to a command prompt, then hand-tweaking the pasted text so it makes
sense as a command.
Streamline run_build_test.py output so less hand-tweaking is needed.
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Davep/DRTVWR-440
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davep/DRTVWR-440
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materialF and fullbrightShinyF
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SL-11589
Approved-by: Dave Houlton <euclid@lindenlab.com>
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SL-12574 tweak brightness
Approved-by: Dave Houlton <euclid@lindenlab.com>
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SL-12865, add bias to alpha mask values to avoid 8-bit acne
Approved-by: Andrey Kleshchev
Approved-by: Michael Pohoreski
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Merge master (release 6.3.9) into DRTVWR-440
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following promotion of DRTVWR-481
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SL-10449 remove soft gamma adjustment that breaks Mac GLSL compiler
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SL-12574: Tweak sky cubemap to not be as dark to better match Windlight
Approved-by: Dave Houlton <euclid@lindenlab.com>
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Add missing fullbrightAtmosTransportFrag stub.
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SL-12005 Fix for projectors getting brighter when switching to single light shader.
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shader.
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SL-12781
Approved-by: Dave Houlton <euclid@lindenlab.com>
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SL-12784 disambiguate vertex_color.a of 0
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SL-12850
Approved-by: Dave Houlton <euclid@lindenlab.com>
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SL-12233 Fix for disagreement between fullbright implementations with ALM on and off.
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and off.
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test for background and model preview
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mCameraDistance as it is set in setPreviewTarget() via initModelPreview()
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SL-12784 restore vertex color alpha contribution
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