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Review request for Viewer. By Gistya Eusebio. Description In llvertexbuffer.cpp we call: delete mFence; mFence is an instance of class LLGLSyncFence which is a sub-class of LLGLFence, which is defined in llgl.h. However, class LLGLFence should have a virtual destructor because it's the base class. This patch fixes that potential memory leak, adding a virtual destructor to class LLGLFence. The virtual destructor ensures that the destructor for the derived class also gets called when we call "delete mfence;". To quote Björn Pollex, "If you have a class that is supposed to be usable polymorphically, it should also be deletable polymorphically." (Unless I'm missing something...!) NOTE: I notice that related code is commented in methods "void LLVertexBuffer::placeFence() const" and "void LLVertexBuffer::waitFence() const" -- maybe we commented it out because this memory leak was unresolved? Perhaps it can be uncommented now? I haven't tried yet. There was no note as to why the code is commented out. Testing I did compile this with OS X 10.8 as a build target successfully. I made other changes too, so while my FPS seems improved, it could be from any number of issues. I did notice that any llCharacters that are moving around don't get rendered properly by my build, but I don't know if it's because of this code revision or something else. I need to do further testing on that. Diffs indra/llrender/llgl.h (UNKNOWN) View Diff
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