diff --git a/gpu/include/GrGLConfig.h b/gpu/include/GrGLConfig.h
index e59fe55..d608775 100644
--- a/gpu/include/GrGLConfig.h
+++ b/gpu/include/GrGLConfig.h
@@ -202,6 +202,24 @@
         GR_GL(GetIntegerv(e, p));   \
     } while (0)
 
+#define GR_GL_GetFramebufferAttachmentParameteriv(t, a, pname, p)   \
+    do {                                                            \
+        *(p) = GR_GL_INIT_ZERO;                                     \
+        GR_GL(GetFramebufferAttachmentParameteriv(t, a, pname, p)); \
+    } while (0)
+
+#define GR_GL_GetRenderbufferParameteriv(t, pname, p)    \
+    do {                                                 \
+        *(p) = GR_GL_INIT_ZERO;                          \
+        GR_GL(GetRenderbufferParameteriv(t, pname, p));  \
+    } while (0)
+
+#define GR_GL_GetTexLevelParameteriv(t, l, pname, p)    \
+    do {                                                \
+        *(p) = GR_GL_INIT_ZERO;                         \
+        GR_GL(GetTexLevelParameteriv(t, l, pname, p));  \
+    } while (0)
+
 ////////////////////////////////////////////////////////////////////////////////
 
 #endif
diff --git a/gpu/include/GrGLDefines.h b/gpu/include/GrGLDefines.h
index 6c2483b..b0366fb 100644
--- a/gpu/include/GrGLDefines.h
+++ b/gpu/include/GrGLDefines.h
@@ -432,11 +432,11 @@
 #define GR_GL_TEXTURE_ENV                   0x2300
 #define GR_GL_TEXTURE_ENV_MODE              0x2200
 #define GR_GL_TEXTURE_1D                    0x0DE0
-#define GR_GL_TEXTURE_2D                    0x0DE1
-/*	GL_TEXTURE_WRAP_S */
-/*	GL_TEXTURE_WRAP_T */
-/*	GL_TEXTURE_MAG_FILTER */
-/*	GL_TEXTURE_MIN_FILTER */
+/* GL_TEXTURE_2D */
+/* GL_TEXTURE_WRAP_S */
+/* GL_TEXTURE_WRAP_T */
+/* GL_TEXTURE_MAG_FILTER */
+/* GL_TEXTURE_MIN_FILTER */
 #define GR_GL_TEXTURE_ENV_COLOR             0x2201
 #define GR_GL_TEXTURE_GEN_S                 0x0C60
 #define GR_GL_TEXTURE_GEN_T                 0x0C61
@@ -452,10 +452,11 @@
 #define GR_GL_TEXTURE_ALPHA_SIZE            0x805F
 #define GR_GL_TEXTURE_LUMINANCE_SIZE        0x8060
 #define GR_GL_TEXTURE_INTENSITY_SIZE        0x8061
-/*	GL_NEAREST_MIPMAP_NEAREST */
-/*	GL_NEAREST_MIPMAP_LINEAR */
-/*	GL_LINEAR_MIPMAP_NEAREST */
-/*	GL_LINEAR_MIPMAP_LINEAR */
+#define GR_GL_TEXTURE_INTERNAL_FORMAT       0x1003
+/* GL_NEAREST_MIPMAP_NEAREST */
+/* GL_NEAREST_MIPMAP_LINEAR */
+/* GL_LINEAR_MIPMAP_NEAREST */
+/* GL_LINEAR_MIPMAP_LINEAR */
 #define GR_GL_OBJECT_LINEAR                 0x2401
 #define GR_GL_OBJECT_PLANE                  0x2501
 #define GR_GL_EYE_LINEAR                    0x2400
@@ -605,6 +606,11 @@
 #define GR_GL_RGB5_A1                        0x8057
 #define GR_GL_RGB565                         0x8D62
 #define GR_GL_RGBA8                          0x8058
+#define GR_GL_RGB8                           0x8051
+#define GR_GL_SRGB                           0x8C40
+#define GR_GL_SRGB8                          0x8C41
+#define GR_GL_SRGB_ALPHA                     0x8C42
+#define GR_GL_SRGB8_ALPHA8                   0x8C43
 #define GR_GL_DEPTH_COMPONENT16              0x81A5
 #define GR_GL_STENCIL_INDEX                  0x1901
 #define GR_GL_STENCIL_INDEX4                 0x8D47
@@ -629,6 +635,13 @@
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME           0x8CD1
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL         0x8CD2
 #define GR_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE 0x8CD3
+#define GR_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER         0x8CD4
+#define GR_GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE              0x8212
+#define GR_GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE            0x8213
+#define GR_GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE             0x8214
+#define GR_GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE            0x8215
+#define GR_GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE            0x8216
+#define GR_GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE          0x8217
 
 #define GR_GL_COLOR_ATTACHMENT0              0x8CE0
 #define GR_GL_DEPTH_ATTACHMENT               0x8D00
diff --git a/gpu/include/GrGLInterface.h b/gpu/include/GrGLInterface.h
index 42ff0c8..c959c36 100644
--- a/gpu/include/GrGLInterface.h
+++ b/gpu/include/GrGLInterface.h
@@ -133,6 +133,7 @@
     typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetShaderInfoLogProc)(GrGLuint shader, GrGLsizei bufsize, GrGLsizei* length, char* infolog);
     typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetShaderivProc)(GrGLuint shader, GrGLenum pname, GrGLint* params);
     typedef const GrGLubyte* (GR_GL_FUNCTION_TYPE *GrGLGetStringProc)(GrGLenum name);
+    typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetTexLevelParameteriv)(GrGLenum target, GrGLint level, GrGLenum pname, GrGLint* params);
     typedef GrGLint (GR_GL_FUNCTION_TYPE *GrGLGetUniformLocationProc)(GrGLuint program, const char* name);
     typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLLineWidthProc)(GrGLfloat width);
     typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLLinkProgramProc)(GrGLuint program);
@@ -190,6 +191,8 @@
     typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLFramebufferTexture2DProc)(GrGLenum target, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level);
     typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGenFramebuffersProc)(GrGLsizei n, GrGLuint *framebuffers);
     typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGenRenderbuffersProc)(GrGLsizei n, GrGLuint *renderbuffers);
+    typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetFramebufferAttachmentParameterivProc)(GrGLenum target, GrGLenum attachment, GrGLenum pname, GrGLint* params);
+    typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetRenderbufferParameterivProc)(GrGLenum target, GrGLenum pname, GrGLint* params);
     typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLRenderbufferStorageProc)(GrGLenum target, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
 
     // Multisampling Extension Functions
@@ -283,6 +286,7 @@
     GrGLGetShaderInfoLogProc fGetShaderInfoLog;
     GrGLGetShaderivProc fGetShaderiv;
     GrGLGetStringProc fGetString;
+    GrGLGetTexLevelParameteriv fGetTexLevelParameteriv;
     GrGLGetUniformLocationProc fGetUniformLocation;
     GrGLLineWidthProc fLineWidth;
     GrGLLinkProgramProc fLinkProgram;
@@ -340,6 +344,8 @@
     GrGLFramebufferTexture2DProc fFramebufferTexture2D;
     GrGLGenFramebuffersProc fGenFramebuffers;
     GrGLGenRenderbuffersProc fGenRenderbuffers;
+    GrGLGetFramebufferAttachmentParameterivProc fGetFramebufferAttachmentParameteriv;
+    GrGLGetRenderbufferParameterivProc fGetRenderbufferParameteriv;
     GrGLRenderbufferStorageProc fRenderbufferStorage;
 
     // Multisampling Extension Functions
diff --git a/gpu/include/GrGLTexture.h b/gpu/include/GrGLTexture.h
index fe2fa28..53dcd22 100644
--- a/gpu/include/GrGLTexture.h
+++ b/gpu/include/GrGLTexture.h
@@ -67,6 +67,7 @@
     GrGLRenderTarget(GrGpuGL* gpu,
                      const GLRenderTargetIDs& ids,
                      GrGLTexID* texID,
+                     GrPixelConfig config,
                      GrGLuint stencilBits,
                      bool isMultisampled,
                      const GrGLIRect& fViewport,
@@ -177,7 +178,7 @@
                                    int height,
                                    const void* srcData,
                                    size_t rowBytes);
-    virtual intptr_t getTextureHandle();
+    virtual intptr_t getTextureHandle() const;
 
     const TexParams& getTexParams() const { return fTexParams; }
     void setTexParams(const TexParams& texParams) { fTexParams = texParams; }
diff --git a/gpu/include/GrGeometryBuffer.h b/gpu/include/GrGeometryBuffer.h
index 98f58bd..d7dc177 100644
--- a/gpu/include/GrGeometryBuffer.h
+++ b/gpu/include/GrGeometryBuffer.h
@@ -26,12 +26,6 @@
  */
 class GrGeometryBuffer : public GrResource {
 public:
-    /**
-     * Retrieves the size of the buffer
-     *
-     * @return the size of the buffer in bytes
-     */
-    size_t size() const { return fSizeInBytes; }
 
     /**
      *Retrieves whether the buffer was created with the dynamic flag
@@ -94,6 +88,10 @@
     virtual bool updateSubData(const void* src,
                                size_t srcSizeInBytes,
                                size_t offset) = 0;
+
+    // GrResource overrides
+    virtual size_t sizeInBytes() const { return fSizeInBytes; }
+
 protected:
     GrGeometryBuffer(GrGpu* gpu, size_t sizeInBytes, bool dynamic)
         : INHERITED(gpu)
diff --git a/gpu/include/GrIndexBuffer.h b/gpu/include/GrIndexBuffer.h
index 366640e..23078c3 100644
--- a/gpu/include/GrIndexBuffer.h
+++ b/gpu/include/GrIndexBuffer.h
@@ -27,7 +27,9 @@
          * from the index buffer (using kTriangles_PrimitiveType).
          * @return the maximum number of quads using full size of index buffer.
          */
-        int maxQuads() const { return size() / (sizeof(uint16_t) * 6); }
+        int maxQuads() const {
+            return this->sizeInBytes() / (sizeof(uint16_t) * 6);
+        }
 protected:
     GrIndexBuffer(GrGpu* gpu, size_t sizeInBytes, bool dynamic)
         : INHERITED(gpu, sizeInBytes, dynamic) {}
diff --git a/gpu/include/GrResource.h b/gpu/include/GrResource.h
index 8cc4d57..eee1a81 100644
--- a/gpu/include/GrResource.h
+++ b/gpu/include/GrResource.h
@@ -54,6 +54,14 @@
      */
     bool isValid() const { return NULL != fGpu; }
 
+    /**
+     * Retrieves the size of the object in GPU memory. This is approximate since
+     * we aren't aware of additional padding or copies made by the driver.
+     *
+     * @return the size of the buffer in bytes
+     */
+     virtual size_t sizeInBytes() const = 0;
+
 protected:
 
     virtual void onRelease() = 0;
diff --git a/gpu/include/GrTexture.h b/gpu/include/GrTexture.h
index 50ed35d..cadf0f2 100644
--- a/gpu/include/GrTexture.h
+++ b/gpu/include/GrTexture.h
@@ -44,6 +44,13 @@
     int height() const { return fHeight; }
 
     /**
+     * @return the pixel config. Can be kUnknown_GrPixelConfig
+     * if client asked us to render to a target that has a pixel
+     * config that isn't equivalent with one of our configs.
+     */
+    int config() const { return fConfig; }
+
+    /**
      * @return the number of stencil bits in the rendertarget
      */
     int stencilBits() const { return fStencilBits; }
@@ -105,6 +112,9 @@
      */
     const GrIRect& getResolveRect() const { return fResolveRect; }
 
+    // GrResource overrides
+    virtual size_t sizeInBytes() const;
+
     /**
      * Reads a rectangle of pixels from the render target.
      * @param left          left edge of the rectangle to read (inclusive)
@@ -135,12 +145,14 @@
                    GrTexture* texture,
                    int width,
                    int height,
+                   GrPixelConfig config,
                    int stencilBits,
                    bool isMultisampled)
         : INHERITED(gpu)
         , fTexture(texture)
         , fWidth(width)
         , fHeight(height)
+        , fConfig(config)
         , fStencilBits(stencilBits)
         , fIsMultisampled(isMultisampled)
     {
@@ -160,11 +172,12 @@
 
 private:
     GrTexture* fTexture; // not ref'ed
-    int        fWidth;
-    int        fHeight;
-    int        fStencilBits;
-    bool       fIsMultisampled;
-    GrIRect    fResolveRect;
+    int             fWidth;
+    int             fHeight;
+    GrPixelConfig   fConfig;
+    int             fStencilBits;
+    bool            fIsMultisampled;
+    GrIRect         fResolveRect;
 
     // GrGpu keeps a cached clip in the render target to avoid redundantly
     // rendering the clip into the same stencil buffer.
@@ -208,7 +221,7 @@
     /**
      *  Approximate number of bytes used by the texture
      */
-    size_t sizeInBytes() const {
+    virtual size_t sizeInBytes() const {
         return fWidth * fHeight * GrBytesPerPixel(fConfig);
     }
 
@@ -273,7 +286,7 @@
      *  Return the native ID or handle to the texture, depending on the
      *  platform. e.g. on opengl, return the texture ID.
      */
-    virtual intptr_t getTextureHandle() = 0;
+    virtual intptr_t getTextureHandle() const = 0;
 
 #if GR_DEBUG
     void validate() const {
@@ -301,7 +314,7 @@
         fShiftFixedX = 31 - Gr_clz(fWidth);
         fShiftFixedY = 31 - Gr_clz(fHeight);
     }
-    
+
     // GrResource overrides
     virtual void onRelease() {
         releaseRenderTarget();
diff --git a/gpu/src/GrBufferAllocPool.cpp b/gpu/src/GrBufferAllocPool.cpp
index 5e9dbea..4255632 100644
--- a/gpu/src/GrBufferAllocPool.cpp
+++ b/gpu/src/GrBufferAllocPool.cpp
@@ -111,7 +111,7 @@
         if (block.fBuffer->isLocked()) {
             block.fBuffer->unlock();
         } else {
-            size_t flushSize = block.fBuffer->size() - block.fBytesFree;
+            size_t flushSize = block.fBuffer->sizeInBytes() - block.fBytesFree;
             flushCpuData(fBlocks.back().fBuffer, flushSize);
         }
         fBufferPtr = NULL;
@@ -137,7 +137,7 @@
         GrAssert(!fBlocks[i].fBuffer->isLocked());
     }
     for (int i = 0; i < fBlocks.count(); ++i) {
-        size_t bytes = fBlocks[i].fBuffer->size() - fBlocks[i].fBytesFree; 
+        size_t bytes = fBlocks[i].fBuffer->sizeInBytes() - fBlocks[i].fBytesFree; 
         bytesInUse += bytes;
         GrAssert(bytes || unusedBlockAllowed);
     }
@@ -163,7 +163,7 @@
 
     if (NULL != fBufferPtr) {
         BufferBlock& back = fBlocks.back();
-        size_t usedBytes = back.fBuffer->size() - back.fBytesFree;
+        size_t usedBytes = back.fBuffer->sizeInBytes() - back.fBytesFree;
         size_t pad = GrSizeAlignUpPad(usedBytes,
                                       alignment);
         if ((size + pad) <= back.fBytesFree) {
@@ -199,7 +199,7 @@
     VALIDATE();
     if (NULL != fBufferPtr) {
         const BufferBlock& back = fBlocks.back();
-        size_t usedBytes = back.fBuffer->size() - back.fBytesFree;
+        size_t usedBytes = back.fBuffer->sizeInBytes() - back.fBytesFree;
         size_t pad = GrSizeAlignUpPad(usedBytes, itemSize);
         return (back.fBytesFree - pad) / itemSize;
     } else if (fPreallocBuffersInUse < fPreallocBuffers.count()) {
@@ -223,7 +223,7 @@
         // caller shouldnt try to put back more than they've taken
         GrAssert(!fBlocks.empty());
         BufferBlock& block = fBlocks.back();
-        size_t bytesUsed = block.fBuffer->size() - block.fBytesFree;
+        size_t bytesUsed = block.fBuffer->sizeInBytes() - block.fBytesFree;
         if (bytes >= bytesUsed) {
             bytes -= bytesUsed;
             fBytesInUse -= bytesUsed;
@@ -271,7 +271,7 @@
             prev.fBuffer->unlock();
         } else {
             flushCpuData(prev.fBuffer,
-                         prev.fBuffer->size() - prev.fBytesFree);
+                         prev.fBuffer->sizeInBytes() - prev.fBytesFree);
         }
         fBufferPtr = NULL;
     }
@@ -317,7 +317,7 @@
     GrAssert(NULL != buffer);
     GrAssert(!buffer->isLocked());
     GrAssert(fCpuData.get() == fBufferPtr);
-    GrAssert(flushSize <= buffer->size());
+    GrAssert(flushSize <= buffer->sizeInBytes());
 
     bool updated = false;
     if (fGpu->supportsBufferLocking() &&
diff --git a/gpu/src/GrDrawTarget.cpp b/gpu/src/GrDrawTarget.cpp
index 1e8761f..e4f0769 100644
--- a/gpu/src/GrDrawTarget.cpp
+++ b/gpu/src/GrDrawTarget.cpp
@@ -641,7 +641,7 @@
             maxValidVertex = geoSrc.fVertexCount;
             break;
         case kBuffer_GeometrySrcType:
-            maxValidVertex = geoSrc.fVertexBuffer->size() / 
+            maxValidVertex = geoSrc.fVertexBuffer->sizeInBytes() /
                              VertexSize(geoSrc.fVertexLayout);
             break;
     }
@@ -658,7 +658,7 @@
             maxValidIndex = geoSrc.fIndexCount;
             break;
         case kBuffer_GeometrySrcType:
-            maxValidIndex = geoSrc.fIndexBuffer->size() / sizeof(uint16_t);
+            maxValidIndex = geoSrc.fIndexBuffer->sizeInBytes() / sizeof(uint16_t);
             break;
     }
     if (maxIndex > maxValidIndex) {
@@ -685,7 +685,7 @@
             maxValidVertex = geoSrc.fVertexCount;
             break;
         case kBuffer_GeometrySrcType:
-            maxValidVertex = geoSrc.fVertexBuffer->size() / 
+            maxValidVertex = geoSrc.fVertexBuffer->sizeInBytes() /
             VertexSize(geoSrc.fVertexLayout);
             break;
     }
diff --git a/gpu/src/GrGLIndexBuffer.cpp b/gpu/src/GrGLIndexBuffer.cpp
index 1d3f893..579311a 100644
--- a/gpu/src/GrGLIndexBuffer.cpp
+++ b/gpu/src/GrGLIndexBuffer.cpp
@@ -59,8 +59,8 @@
     if (GPUGL->supportsBufferLocking()) {
         this->bind();
         // Let driver know it can discard the old data
-        GR_GL(BufferData(GR_GL_ELEMENT_ARRAY_BUFFER, size(), NULL,
-                         dynamic() ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW));
+        GR_GL(BufferData(GR_GL_ELEMENT_ARRAY_BUFFER, this->sizeInBytes(), NULL,
+                         this->dynamic() ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW));
         fLockPtr = GR_GL(MapBuffer(GR_GL_ELEMENT_ARRAY_BUFFER, GR_GL_WRITE_ONLY));
 
         return fLockPtr;
@@ -98,16 +98,16 @@
 bool GrGLIndexBuffer::updateData(const void* src, size_t srcSizeInBytes) {
     GrAssert(fBufferID);
     GrAssert(!isLocked());
-    if (srcSizeInBytes > size()) {
+    if (srcSizeInBytes > this->sizeInBytes()) {
         return false;
     }
     this->bind();
     GrGLenum usage = dynamic() ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW;
-    if (size() == srcSizeInBytes) {
+    if (this->sizeInBytes() == srcSizeInBytes) {
         GR_GL(BufferData(GR_GL_ELEMENT_ARRAY_BUFFER, srcSizeInBytes, src, usage));
     } else {
 #if GR_GL_USE_BUFFER_DATA_NULL_HINT
-        GR_GL(BufferData(GR_GL_ELEMENT_ARRAY_BUFFER, size(), NULL, usage));
+        GR_GL(BufferData(GR_GL_ELEMENT_ARRAY_BUFFER, this->sizeInBytes(), NULL, usage));
 #endif
         GR_GL(BufferSubData(GR_GL_ELEMENT_ARRAY_BUFFER, 0, srcSizeInBytes, src));
     }
@@ -119,7 +119,7 @@
                                     size_t offset) {
     GrAssert(fBufferID);
     GrAssert(!isLocked());
-    if (srcSizeInBytes + offset > size()) {
+    if (srcSizeInBytes + offset > this->sizeInBytes()) {
         return false;
     }
     this->bind();
diff --git a/gpu/src/GrGLInterface.cpp b/gpu/src/GrGLInterface.cpp
index 2237474..68d058d 100644
--- a/gpu/src/GrGLInterface.cpp
+++ b/gpu/src/GrGLInterface.cpp
@@ -236,6 +236,8 @@
         NULL == fDeleteRenderbuffers ||
         NULL == fFramebufferRenderbuffer ||
         NULL == fFramebufferTexture2D ||
+        NULL == fGetFramebufferAttachmentParameteriv ||
+        NULL == fGetRenderbufferParameteriv ||
         NULL == fGenFramebuffers ||
         NULL == fGenRenderbuffers ||
         NULL == fRenderbufferStorage) {
@@ -310,9 +312,11 @@
 
     // part of desktop GL
     if (kDesktop_GrGLBinding == fBindingsExported &&
-        NULL == fLineWidth) {
+        (NULL == fLineWidth ||
+         NULL == fGetTexLevelParameteriv)) {
         return false;
     }
+
     // FBO MSAA
     if (kDesktop_GrGLBinding == fBindingsExported) {
         // GL 3.0 and the ARB extension have multisample + blit
diff --git a/gpu/src/GrGLTexture.cpp b/gpu/src/GrGLTexture.cpp
index bbca5ed..c5375c9 100644
--- a/gpu/src/GrGLTexture.cpp
+++ b/gpu/src/GrGLTexture.cpp
@@ -23,12 +23,14 @@
 GrGLRenderTarget::GrGLRenderTarget(GrGpuGL* gpu,
                                    const GLRenderTargetIDs& ids,
                                    GrGLTexID* texID,
+                                   GrPixelConfig config,
                                    GrGLuint stencilBits,
                                    bool isMultisampled,
                                    const GrGLIRect& viewport,
                                    GrGLTexture* texture)
     : INHERITED(gpu, texture, viewport.fWidth, 
-                viewport.fHeight, stencilBits, isMultisampled) {
+                viewport.fHeight, config, 
+                stencilBits, isMultisampled) {
     fRTFBOID                = ids.fRTFBOID;
     fTexFBOID               = ids.fTexFBOID;
     fStencilRenderbufferID  = ids.fStencilRenderbufferID;
@@ -131,6 +133,7 @@
         vp.fBottom = textureDesc.fAllocHeight - textureDesc.fContentHeight;
 
         fRenderTarget = new GrGLRenderTarget(gpu, rtIDs, fTexIDObj,
+                                             textureDesc.fFormat,
                                              textureDesc.fStencilBits,
                                              rtIDs.fRTFBOID != rtIDs.fTexFBOID,
                                              vp, this);
@@ -226,7 +229,7 @@
     }
 }
 
-intptr_t GrGLTexture::getTextureHandle() {
+intptr_t GrGLTexture::getTextureHandle() const {
     return fTexIDObj->id();
 }
 
diff --git a/gpu/src/GrGLVertexBuffer.cpp b/gpu/src/GrGLVertexBuffer.cpp
index 5d274aa..bb51b4e 100644
--- a/gpu/src/GrGLVertexBuffer.cpp
+++ b/gpu/src/GrGLVertexBuffer.cpp
@@ -58,8 +58,8 @@
     if (GPUGL->supportsBufferLocking()) {
         this->bind();
         // Let driver know it can discard the old data
-        GR_GL(BufferData(GR_GL_ARRAY_BUFFER, size(), NULL,
-                         dynamic() ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW));
+        GR_GL(BufferData(GR_GL_ARRAY_BUFFER, this->sizeInBytes(), NULL,
+                         this->dynamic() ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW));
         fLockPtr = GR_GL(MapBuffer(GR_GL_ARRAY_BUFFER, GR_GL_WRITE_ONLY));
         return fLockPtr;
     }
@@ -97,16 +97,16 @@
 bool GrGLVertexBuffer::updateData(const void* src, size_t srcSizeInBytes) {
     GrAssert(fBufferID);
     GrAssert(!isLocked());
-    if (srcSizeInBytes > size()) {
+    if (srcSizeInBytes > this->sizeInBytes()) {
         return false;
     }
     this->bind();
     GrGLenum usage = dynamic() ? GR_GL_DYNAMIC_DRAW : GR_GL_STATIC_DRAW;
-    if (size() == srcSizeInBytes) {
+    if (this->sizeInBytes() == srcSizeInBytes) {
         GR_GL(BufferData(GR_GL_ARRAY_BUFFER, srcSizeInBytes, src, usage));
     } else {
 #if GR_GL_USE_BUFFER_DATA_NULL_HINT
-        GR_GL(BufferData(GR_GL_ARRAY_BUFFER, size(), NULL, usage));
+        GR_GL(BufferData(GR_GL_ARRAY_BUFFER, this->sizeInBytes(), NULL, usage));
 #endif
         GR_GL(BufferSubData(GR_GL_ARRAY_BUFFER, 0, srcSizeInBytes, src));
     }
@@ -118,7 +118,7 @@
                                      size_t offset) {
     GrAssert(fBufferID);
     GrAssert(!isLocked());
-    if (srcSizeInBytes + offset > size()) {
+    if (srcSizeInBytes + offset > this->sizeInBytes()) {
         return false;
     }
     this->bind();
diff --git a/gpu/src/GrGpuGL.cpp b/gpu/src/GrGpuGL.cpp
index 09b337c..eae2019 100644
--- a/gpu/src/GrGpuGL.cpp
+++ b/gpu/src/GrGpuGL.cpp
@@ -658,12 +658,152 @@
         viewport.fWidth  = desc.fWidth;
         viewport.fHeight = desc.fHeight;
 
-        return new GrGLRenderTarget(this, rtIDs, NULL, desc.fStencilBits,
-                                    kIsMultisampled_GrPlatformRenderTargetFlagBit & desc.fRenderTargetFlags,
-                                    viewport, NULL);
+        bool isMSAA = kIsMultisampled_GrPlatformRenderTargetFlagBit &
+                     desc.fRenderTargetFlags;
+
+        return new GrGLRenderTarget(this, rtIDs, NULL, desc.fConfig,
+                                    desc.fStencilBits, isMSAA, viewport, NULL);
     }
 }
 
+namespace {
+
+static const GrGLenum kUnknownGLFormat = ~0;
+
+GrGLenum get_fbo_color_format() {
+    GrGLint cbType;
+    GR_GL_GetFramebufferAttachmentParameteriv(GR_GL_FRAMEBUFFER,
+                                    GR_GL_COLOR_ATTACHMENT0,
+                                    GR_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE,
+                                    &cbType);
+    GrGLint cbID;
+    GrGLint cbFormat;
+    switch (cbType) {
+        case GR_GL_RENDERBUFFER:
+            GR_GL_GetFramebufferAttachmentParameteriv(GR_GL_FRAMEBUFFER,
+                                    GR_GL_COLOR_ATTACHMENT0,
+                                    GR_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,
+                                    &cbID);
+            GR_GL(BindRenderbuffer(GR_GL_RENDERBUFFER, cbID));
+            GR_GL_GetRenderbufferParameteriv(GR_GL_RENDERBUFFER,
+                                             GR_GL_RENDERBUFFER_INTERNAL_FORMAT,
+                                             &cbFormat);
+            return cbFormat;
+            break;
+        case GR_GL_TEXTURE:
+            // ES doesn't have glGetTexLevelParameter
+            if (GR_GL_SUPPORT_DESKTOP) {
+                GrGLint cbLevel;
+                GrGLint cbFace;
+                GR_GL_GetFramebufferAttachmentParameteriv(GR_GL_FRAMEBUFFER,
+                                    GR_GL_COLOR_ATTACHMENT0,
+                                    GR_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME,
+                                    &cbID);
+                GR_GL_GetFramebufferAttachmentParameteriv(GR_GL_FRAMEBUFFER,
+                                    GR_GL_COLOR_ATTACHMENT0,
+                                    GR_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL,
+                                    &cbLevel);
+                GR_GL_GetFramebufferAttachmentParameteriv(GR_GL_FRAMEBUFFER,
+                            GR_GL_COLOR_ATTACHMENT0,
+                            GR_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE,
+                            &cbFace);
+                GrGLenum bind;
+                GrGLenum target;
+                if (cbFace) {
+                    bind = GR_GL_TEXTURE_CUBE_MAP;
+                    target = cbFace;
+                } else {
+                    bind = GR_GL_TEXTURE_2D;
+                    target = GR_GL_TEXTURE_2D;
+                }
+                GR_GL(BindTexture(bind, cbID));
+                GR_GL_GetTexLevelParameteriv(target, cbLevel, 
+                                    GR_GL_TEXTURE_INTERNAL_FORMAT, &cbFormat);
+                return cbFormat;
+            } else {
+                return kUnknownGLFormat;
+            }
+            break;
+        default:
+            // we can get here with FBO 0, not a render buffer or a texture
+            return kUnknownGLFormat;
+    }
+}
+
+GrPixelConfig internal_color_format_to_config(GrGLenum iFormat) {
+    switch (iFormat) {
+        case GR_GL_RGB565:
+            return kRGB_565_GrPixelConfig;
+        case GR_GL_RGBA4:
+            return kRGBA_4444_GrPixelConfig;
+        case GR_GL_RGBA8:
+        case GR_GL_SRGB8_ALPHA8:
+        case GR_GL_SRGB_ALPHA:
+        case GR_GL_RGBA:
+        case GR_GL_BGRA:
+            return kRGBA_8888_GrPixelConfig;
+        case GR_GL_RGB8:
+        case GR_GL_SRGB8:
+        case GR_GL_SRGB:
+            return kRGBX_8888_GrPixelConfig;
+        default:
+            // there are many GL formats we don't have enums
+            // for. We should still render to them if the client
+            // asks us.
+            return kUnknown_GrPixelConfig;
+    }
+}
+
+GrPixelConfig get_implied_color_config(bool arbFBOExtension) {
+    GrGLint rSize, bSize, gSize, aSize;
+    if (arbFBOExtension) {
+        GR_GL_GetFramebufferAttachmentParameteriv(GR_GL_FRAMEBUFFER, 
+                GR_GL_COLOR_ATTACHMENT0,
+                GR_GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE, &rSize);
+        GR_GL_GetFramebufferAttachmentParameteriv(GR_GL_FRAMEBUFFER,
+                GR_GL_COLOR_ATTACHMENT0,
+                GR_GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE, &gSize);
+        GR_GL_GetFramebufferAttachmentParameteriv(GR_GL_FRAMEBUFFER, 
+                GR_GL_COLOR_ATTACHMENT0,
+                GR_GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE, &bSize);
+        GR_GL_GetFramebufferAttachmentParameteriv(GR_GL_FRAMEBUFFER,
+                GR_GL_COLOR_ATTACHMENT0, 
+                GR_GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE, &aSize);
+    } else {
+        GR_GL_GetIntegerv(GR_GL_RED_BITS, &rSize);
+        GR_GL_GetIntegerv(GR_GL_GREEN_BITS, &gSize);
+        GR_GL_GetIntegerv(GR_GL_BLUE_BITS, &bSize);
+        GR_GL_GetIntegerv(GR_GL_ALPHA_BITS, &aSize);
+    }
+
+    if(8 == rSize && 8 == gSize && 8 == bSize) {
+       if (0 == aSize) {
+           return kRGBX_8888_GrPixelConfig;
+       } else if (8 == aSize) {
+           return kRGBA_8888_GrPixelConfig;
+       }
+    } else if (4 == rSize && 4 == gSize && 4 == bSize && 4 == aSize) {
+        return kRGBA_4444_GrPixelConfig;
+    } else if (5 == rSize && 6 == gSize && 5 == bSize && 0 == aSize) {
+        return kRGB_565_GrPixelConfig;
+    }
+    return kUnknown_GrPixelConfig;
+}
+
+int get_fbo_stencil_bits(bool arbFBOExtension) {
+    GrGLint stencilBits;
+    if (arbFBOExtension) {
+        GR_GL_GetFramebufferAttachmentParameteriv(GR_GL_FRAMEBUFFER,
+                                    GR_GL_STENCIL_ATTACHMENT,
+                                    GR_GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE,
+                                    &stencilBits);
+    } else {
+        GR_GL_GetIntegerv(GR_GL_STENCIL_BITS, &stencilBits);
+    }
+    return stencilBits;
+}
+}
+
 GrRenderTarget* GrGpuGL::onCreateRenderTargetFrom3DApiState() {
 
     GrGLRenderTarget::GLRenderTargetIDs rtIDs;
@@ -673,17 +813,29 @@
     rtIDs.fMSColorRenderbufferID = 0;
     rtIDs.fStencilRenderbufferID = 0;
 
+    bool arbFBO = (GR_GL_SUPPORT_DESKTOP && (fGLVersion > 3.0 ||
+                   this->hasExtension("GL_ARB_framebuffer_object")));
+
     GrGLIRect viewport;
     viewport.setFromGLViewport();
-    GrGLuint stencilBits;
-    GR_GL_GetIntegerv(GR_GL_STENCIL_BITS, (GrGLint*)&stencilBits);
+    int stencilBits = get_fbo_stencil_bits(arbFBO);
 
+    GrPixelConfig config;
     GrGLint samples;
     GR_GL_GetIntegerv(GR_GL_SAMPLES, &samples);
+    GrGLenum fmat = get_fbo_color_format();
+    if (kUnknownGLFormat == fmat) {
+        config = get_implied_color_config(arbFBO);
+    } else {
+        config = internal_color_format_to_config(fmat);
+    }
+
+    // may have to bind a texture to gets its format
+    this->setSpareTextureUnit();
 
     rtIDs.fOwnIDs = false;
 
-    return new GrGLRenderTarget(this, rtIDs, NULL, stencilBits, 
+    return new GrGLRenderTarget(this, rtIDs, NULL, config, stencilBits,
                                 (samples > 0), viewport, NULL);
 }
 
diff --git a/gpu/src/GrTextContext.cpp b/gpu/src/GrTextContext.cpp
index 5d0f9f7..9d69a97 100644
--- a/gpu/src/GrTextContext.cpp
+++ b/gpu/src/GrTextContext.cpp
@@ -277,7 +277,7 @@
                                        NULL);
         }
 
-        int maxQuadVertices = 4 * fContext->getQuadIndexBuffer()->size() / (6 * sizeof(uint16_t));
+        int maxQuadVertices = 4 * fContext->getQuadIndexBuffer()->maxQuads();
         if (fMaxVertices < kMinRequestedVerts) {
             fMaxVertices = kDefaultRequestedVerts;
         } else if (fMaxVertices > maxQuadVertices) {
diff --git a/gpu/src/GrTexture.cpp b/gpu/src/GrTexture.cpp
index 8df9c9e..360bcf6 100644
--- a/gpu/src/GrTexture.cpp
+++ b/gpu/src/GrTexture.cpp
@@ -29,6 +29,16 @@
                                            config, buffer);
 }
 
+size_t GrRenderTarget::sizeInBytes() const {
+    int colorBits;
+    if (kUnknown_GrPixelConfig == fConfig) {
+        colorBits = 32; // don't know, make a guess
+    } else {
+        colorBits = GrBytesPerPixel(fConfig);
+    }
+    return fWidth * fHeight * (fStencilBits + colorBits);
+}
+
 void GrRenderTarget::flagAsNeedingResolve(const GrIRect* rect) {
     if (kCanResolve_ResolveType == getResolveType()) {
         if (NULL != rect) {
@@ -63,3 +73,4 @@
                                         width, height,
                                         config, buffer);
 }
+
diff --git a/gpu/src/android/GrGLDefaultInterface_android.cpp b/gpu/src/android/GrGLDefaultInterface_android.cpp
index 4c06f17..dfb9041 100644
--- a/gpu/src/android/GrGLDefaultInterface_android.cpp
+++ b/gpu/src/android/GrGLDefaultInterface_android.cpp
@@ -67,6 +67,7 @@
     glGetShaderInfoLog,
     glGetShaderiv,
     glGetString,
+    NULL, // glGetTexLevelParameteriv
     glGetUniformLocation,
     glLineWidth,
     glLinkProgram,
@@ -122,13 +123,15 @@
     glFramebufferTexture2D,
     glGenFramebuffers,
     glGenRenderbuffers,
+    glGetFramebufferAttachmentParameteriv,
+    glGetRenderbufferParameteriv,
     glRenderbufferStorage,
     NULL,  // glRenderbufferStorageMultisampleEXT,
     NULL,  // glBlitFramebufferEXT,
     NULL,  // glResolveMultisampleFramebuffer
     glMapBufferOES,
     glUnmapBufferOES,
-    NULL,
+    NULL, // glBindFragDataLocationIndexed
     GrGLInterface::kStaticInitEndGuard
   };
   static bool host_StubGL_initialized = false;
diff --git a/gpu/src/ios/GrGLDefaultInterface_iOS.cpp b/gpu/src/ios/GrGLDefaultInterface_iOS.cpp
index 4126d25..252a8c2 100644
--- a/gpu/src/ios/GrGLDefaultInterface_iOS.cpp
+++ b/gpu/src/ios/GrGLDefaultInterface_iOS.cpp
@@ -127,6 +127,8 @@
         gDefaultInterface.fViewport = glViewport;
         
         gDefaultInterface.fGenFramebuffers = glGenFramebuffers;
+        gDefaultInterface.fGetFramebufferAttachmentParameteriv = glFramebufferAttachmentParameteriv;
+        gDefaultInterface.fGetRenderbufferParameteriv = glRenderbufferParameteriv;
         gDefaultInterface.fBindFramebuffer = glBindFramebuffer;
         gDefaultInterface.fFramebufferTexture2D = glFramebufferTexture2D;
         gDefaultInterface.fCheckFramebufferStatus = glCheckFramebufferStatus;
diff --git a/gpu/src/mac/GrGLDefaultInterface_mac.cpp b/gpu/src/mac/GrGLDefaultInterface_mac.cpp
index d21bdda..3ed5c55 100644
--- a/gpu/src/mac/GrGLDefaultInterface_mac.cpp
+++ b/gpu/src/mac/GrGLDefaultInterface_mac.cpp
@@ -72,6 +72,7 @@
         gDefaultInterface.fGetShaderInfoLog = glGetShaderInfoLog;
         gDefaultInterface.fGetShaderiv = glGetShaderiv;
         gDefaultInterface.fGetString = glGetString;
+        gDefaultInterface.fGetTexLevelParameteriv = glGetTexLevelParameteriv;
         gDefaultInterface.fGenTextures = glGenTextures;
         gDefaultInterface.fGetUniformLocation = glGetUniformLocation;
         gDefaultInterface.fLineWidth = glLineWidth;
@@ -127,6 +128,8 @@
 
 #if GL_ARB_framebuffer_object
         gDefaultInterface.fGenFramebuffers = glGenFramebuffers;
+        gDefaultInterface.fGetFramebufferAttachmentParameteriv = glGetFramebufferAttachmentParameteriv;
+        gDefaultInterface.fGetRenderbufferParameteriv = glGetRenderbufferParameteriv;
         gDefaultInterface.fBindFramebuffer = glBindFramebuffer;
         gDefaultInterface.fFramebufferTexture2D = glFramebufferTexture2D;
         gDefaultInterface.fCheckFramebufferStatus = glCheckFramebufferStatus;
@@ -141,6 +144,8 @@
         gDefaultInterface.fBlitFramebuffer = glBlitFramebuffer;
 #elif GL_EXT_framebuffer_object
         gDefaultInterface.fGenFramebuffers = glGenFramebuffersEXT;
+        gDefaultInterface.fGetFramebufferAttachmentivParameter = glGetFramebufferAttachmentParameterivEXT;
+        gDefaultInterface.fGLGetRenderbufferParameteriv = glGetRenderbufferParameterivEXT;
         gDefaultInterface.fBindFramebuffer = glBindFramebufferEXT;
         gDefaultInterface.fFramebufferTexture2D = glFramebufferTexture2DEXT;
         gDefaultInterface.fCheckFramebufferStatus = glCheckFramebufferStatusEXT;
diff --git a/gpu/src/mesa/GrGLDefaultInterface_mesa.cpp b/gpu/src/mesa/GrGLDefaultInterface_mesa.cpp
index 1324649..a2f70e0 100644
--- a/gpu/src/mesa/GrGLDefaultInterface_mesa.cpp
+++ b/gpu/src/mesa/GrGLDefaultInterface_mesa.cpp
@@ -86,6 +86,7 @@
         GR_GL_GET_PROC(GetShaderInfoLog);
         GR_GL_GET_PROC(GetShaderiv);
         gDefaultInterface.fGetString = glGetString;
+        gDefaultInterface.fGetTexLevelParameteriv = glGetTexLevelParameteriv;
         gDefaultInterface.fGenTextures = glGenTextures;
         GR_GL_GET_PROC(GetUniformLocation);
         gDefaultInterface.fLineWidth = glLineWidth;
@@ -142,6 +143,8 @@
         if (major >= 3 || has_gl_extension_from_string(
                 "GL_ARB_framebuffer_object", extString)) {
             GR_GL_GET_PROC(GenFramebuffers);
+            GR_GL_GET_PROC(GetFramebufferAttachmentParameteriv);
+            GR_GL_GET_PROC(GetRenderbufferParameteriv);
             GR_GL_GET_PROC(BindFramebuffer);
             GR_GL_GET_PROC(FramebufferTexture2D);
             GR_GL_GET_PROC(CheckFramebufferStatus);
@@ -156,6 +159,8 @@
         } else if (has_gl_extension_from_string("GL_EXT_framebuffer_object",
                                                 extString)) {
             GR_GL_GET_PROC_SUFFIX(GenFramebuffers, EXT);
+            GR_GL_GET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT);
+            GR_GL_GET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT);
             GR_GL_GET_PROC_SUFFIX(BindFramebuffer, EXT);
             GR_GL_GET_PROC_SUFFIX(FramebufferTexture2D, EXT);
             GR_GL_GET_PROC_SUFFIX(CheckFramebufferStatus, EXT);
diff --git a/gpu/src/unix/GrGLDefaultInterface_unix.cpp b/gpu/src/unix/GrGLDefaultInterface_unix.cpp
index 724f438..df2ab69 100644
--- a/gpu/src/unix/GrGLDefaultInterface_unix.cpp
+++ b/gpu/src/unix/GrGLDefaultInterface_unix.cpp
@@ -88,6 +88,7 @@
         GR_GL_GET_PROC(GetShaderInfoLog);
         GR_GL_GET_PROC(GetShaderiv);
         gDefaultInterface.fGetString = glGetString;
+        gDefaultInterface.fGetTexLevelParameteriv = glGetTexLevelParameteriv;
         gDefaultInterface.fGenTextures = glGenTextures;
         GR_GL_GET_PROC(GetUniformLocation);
         gDefaultInterface.fLineWidth = glLineWidth;
@@ -144,6 +145,8 @@
         if (major >= 3 || has_gl_extension_from_string(
                 "GL_ARB_framebuffer_object", extString)) {
             GR_GL_GET_PROC(GenFramebuffers);
+            GR_GL_GET_PROC(GetFramebufferAttachmentParameteriv);
+            GR_GL_GET_PROC(GetRenderbufferParameteriv);
             GR_GL_GET_PROC(BindFramebuffer);
             GR_GL_GET_PROC(FramebufferTexture2D);
             GR_GL_GET_PROC(CheckFramebufferStatus);
@@ -158,6 +161,8 @@
         } else if (has_gl_extension_from_string("GL_EXT_framebuffer_object",
                                                 extString)) {
             GR_GL_GET_PROC_SUFFIX(GenFramebuffers, EXT);
+            GR_GL_GET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT);
+            GR_GL_GET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT);
             GR_GL_GET_PROC_SUFFIX(BindFramebuffer, EXT);
             GR_GL_GET_PROC_SUFFIX(FramebufferTexture2D, EXT);
             GR_GL_GET_PROC_SUFFIX(CheckFramebufferStatus, EXT);
diff --git a/gpu/src/win/GrGLDefaultInterface_win.cpp b/gpu/src/win/GrGLDefaultInterface_win.cpp
index 3bbd262..f012ccf 100644
--- a/gpu/src/win/GrGLDefaultInterface_win.cpp
+++ b/gpu/src/win/GrGLDefaultInterface_win.cpp
@@ -72,6 +72,7 @@
             gDefaultInterface.fGetError = glGetError;
             gDefaultInterface.fGetIntegerv = glGetIntegerv;
             gDefaultInterface.fGetString = glGetString;
+            gDefaultInterface.fGetTexLevelParameteriv = glGetTexLevelParameteriv;
             gDefaultInterface.fLineWidth = glLineWidth;
             gDefaultInterface.fLoadMatrixf = glLoadMatrixf;
             gDefaultInterface.fMatrixMode = glMatrixMode;
@@ -149,6 +150,8 @@
             // GL_ARB_framebuffer_object doesn't use ARB suffix.)
             if (major >= 3 || has_gl_extension_from_string("GL_ARB_framebuffer_object", extString)) {
                 GR_GL_GET_PROC(GenFramebuffers);
+                GR_GL_GET_PROC(GetFramebufferAttachmentParameteriv);
+                GR_GL_GET_PROC(GetRenderbufferParameteriv);
                 GR_GL_GET_PROC(BindFramebuffer);
                 GR_GL_GET_PROC(FramebufferTexture2D);
                 GR_GL_GET_PROC(CheckFramebufferStatus);
@@ -162,6 +165,8 @@
                 GR_GL_GET_PROC(BlitFramebuffer);
             } else if (has_gl_extension_from_string("GL_EXT_framebuffer_object", extString)) {
                 GR_GL_GET_PROC_SUFFIX(GenFramebuffers, EXT);
+                GR_GL_GET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT);
+                GR_GL_GET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT);
                 GR_GL_GET_PROC_SUFFIX(BindFramebuffer, EXT);
                 GR_GL_GET_PROC_SUFFIX(FramebufferTexture2D, EXT);
                 GR_GL_GET_PROC_SUFFIX(CheckFramebufferStatus, EXT);