Add support for glMapBufferRange. Use glMapBufferRange and glMapBufferSubData.
BUG=skia:2402
Committed: http://code.google.com/p/skia/source/detail?r=14533
R=robertphillips@google.com, djsollen@google.com
Author: bsalomon@google.com
Review URL: https://codereview.chromium.org/243413002
git-svn-id: http://skia.googlecode.com/svn/trunk@14564 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrDrawTargetCaps.h b/src/gpu/GrDrawTargetCaps.h
index a77bce4..648b5c3 100644
--- a/src/gpu/GrDrawTargetCaps.h
+++ b/src/gpu/GrDrawTargetCaps.h
@@ -37,12 +37,25 @@
bool shaderDerivativeSupport() const { return fShaderDerivativeSupport; }
bool geometryShaderSupport() const { return fGeometryShaderSupport; }
bool dualSourceBlendingSupport() const { return fDualSourceBlendingSupport; }
- bool bufferLockSupport() const { return fBufferLockSupport; }
bool pathRenderingSupport() const { return fPathRenderingSupport; }
bool dstReadInShaderSupport() const { return fDstReadInShaderSupport; }
bool discardRenderTargetSupport() const { return fDiscardRenderTargetSupport; }
bool gpuTracingSupport() const { return fGpuTracingSupport; }
+ /**
+ * Indicates whether GPU->CPU memory mapping for GPU resources such as vertex buffers and
+ * textures allows partial mappings or full mappings.
+ */
+ enum MapFlags {
+ kNone_MapFlags = 0x0, //<! Cannot map the resource.
+
+ kCanMap_MapFlag = 0x1, //<! The resource can be mapped. Must be set for any of
+ // the other flags to have meaning.k
+ kSubset_MapFlag = 0x2, //<! The resource can be partially mapped.
+ };
+
+ uint32_t mapBufferFlags() const { return fMapBufferFlags; }
+
// Scratch textures not being reused means that those scratch textures
// that we upload to (i.e., don't have a render target) will not be
// recycled in the texture cache. This is to prevent ghosting by drivers
@@ -69,13 +82,14 @@
bool fShaderDerivativeSupport : 1;
bool fGeometryShaderSupport : 1;
bool fDualSourceBlendingSupport : 1;
- bool fBufferLockSupport : 1;
bool fPathRenderingSupport : 1;
bool fDstReadInShaderSupport : 1;
bool fDiscardRenderTargetSupport: 1;
bool fReuseScratchTextures : 1;
bool fGpuTracingSupport : 1;
+ uint32_t fMapBufferFlags;
+
int fMaxRenderTargetSize;
int fMaxTextureSize;
int fMaxSampleCount;