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Use stream usage for dynamic vertex data.

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R=robertphillips@google.com
Review URL: https://codereview.chromium.org/12799005

git-svn-id: http://skia.googlecode.com/svn/trunk@8129 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
bsalomon@google.com 2013-03-13 15:31:11 +00:00
parent bb51fabc99
commit 306b2ce0e2
1 changed files with 6 additions and 2 deletions
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8
src/gpu/gl/GrGLBufferImpl.cpp
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@ -16,6 +16,10 @@
#define VALIDATE() do {} while(false)
#endif
// GL_STREAM_DRAW triggers an optimization in Chromium's GPU process where a client's vertex buffer
// objects are implemented as client-side-arrays on tile-deferred architectures.
#define DYNAMIC_USAGE_PARAM GR_GL_STREAM_DRAW
GrGLBufferImpl::GrGLBufferImpl(GrGpuGL* gpu, const Desc& desc, GrGLenum bufferType)
: fDesc(desc)
, fBufferType(bufferType)
@ -76,7 +80,7 @@ void* GrGLBufferImpl::lock(GrGpuGL* gpu) {
GL_CALL(gpu, BufferData(fBufferType,
fDesc.fSizeInBytes,
NULL,
fDesc.fDynamic ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW));
fDesc.fDynamic ? DYNAMIC_USAGE_PARAM : GR_GL_STATIC_DRAW));
GR_GL_CALL_RET(gpu->glInterface(),
fLockPtr,
MapBuffer(fBufferType, GR_GL_WRITE_ONLY));
@ -111,7 +115,7 @@ bool GrGLBufferImpl::updateData(GrGpuGL* gpu, const void* src, size_t srcSizeInB
return true;
}
this->bind(gpu);
GrGLenum usage = fDesc.fDynamic ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW;
GrGLenum usage = fDesc.fDynamic ? DYNAMIC_USAGE_PARAM : GR_GL_STATIC_DRAW;
#if GR_GL_USE_BUFFER_DATA_NULL_HINT
if (fDesc.fSizeInBytes == srcSizeInBytes) {