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Try manually nulling out vbo data if its entire contents are to be overwritten. Rumored intel/nvidia optimization.

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Shyotl
2014-01-23 19:06:52 -06:00
parent 97d57d81b0
commit a0c7b1f8ac
1 changed files with 2 additions and 0 deletions
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2
indra/llrender/llvertexbuffer.cpp
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@@ -1850,6 +1850,7 @@ void LLVertexBuffer::unmapBuffer()
else
{
stop_glerror();
glBufferDataARB(GL_ARRAY_BUFFER_ARB, getSize(), NULL, mUsage);
glBufferSubDataARB(GL_ARRAY_BUFFER_ARB, 0, getSize(), (U8*) mMappedData);
stop_glerror();
}
@@ -1916,6 +1917,7 @@ void LLVertexBuffer::unmapBuffer()
else
{
stop_glerror();
glBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, getIndicesSize(), NULL, mUsage);
glBufferSubDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0, getIndicesSize(), (U8*) mMappedIndexData);
stop_glerror();
}