diff options
Diffstat (limited to 'indra/llrender/llvertexbuffer.cpp')
| -rw-r--r-- | indra/llrender/llvertexbuffer.cpp | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/indra/llrender/llvertexbuffer.cpp b/indra/llrender/llvertexbuffer.cpp index 62be5c7368..eb302392bb 100644 --- a/indra/llrender/llvertexbuffer.cpp +++ b/indra/llrender/llvertexbuffer.cpp @@ -166,13 +166,18 @@ volatile U8* LLVBOPool::allocate(U32& name, U32 size) //make a new buffer glGenBuffersARB(1, &name); glBindBufferARB(mType, name); - glBufferDataARB(mType, size, 0, mUsage); LLVertexBuffer::sAllocatedBytes += size; if (LLVertexBuffer::sDisableVBOMapping || mUsage != GL_DYNAMIC_DRAW_ARB) { + glBufferDataARB(mType, size, 0, mUsage); ret = (U8*) ll_aligned_malloc_16(size); } + else + { //always use a true hint of static draw when allocating non-client-backed buffers + glBufferDataARB(mType, size, 0, GL_STATIC_DRAW_ARB); + } + glBindBufferARB(mType, 0); } else @@ -794,9 +799,17 @@ LLVertexBuffer::LLVertexBuffer(U32 typemask, S32 usage) : if (mUsage && mUsage != GL_STREAM_DRAW_ARB) { //only stream_draw and dynamic_draw are supported when using VBOs, dynamic draw is the default - mUsage = GL_DYNAMIC_DRAW_ARB; + if (sDisableVBOMapping) + { //always use stream draw if VBO mapping is disabled + mUsage = GL_STREAM_DRAW_ARB; + } + else + { + mUsage = GL_DYNAMIC_DRAW_ARB; + } } - + + if (mUsage == GL_DYNAMIC_DRAW_ARB && !sDisableVBOMapping) { mMappable = TRUE; |