Add caps and GL API for buffer texture

include/gpu/gl/GrGLInterface.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLInterface_DEFINED
 #define GrGLInterface_DEFINED
 
@@ skipping 258 matching lines @@
 
         GrGLFunction<GrGLResolveMultisampleFramebufferProc> fResolveMultisampleFramebuffer;
         GrGLFunction<GrGLScissorProc> fScissor;
         GrGLFunction<GrGLShaderSourceProc> fShaderSource;
         GrGLFunction<GrGLStencilFuncProc> fStencilFunc;
         GrGLFunction<GrGLStencilFuncSeparateProc> fStencilFuncSeparate;
         GrGLFunction<GrGLStencilMaskProc> fStencilMask;
         GrGLFunction<GrGLStencilMaskSeparateProc> fStencilMaskSeparate;
         GrGLFunction<GrGLStencilOpProc> fStencilOp;
         GrGLFunction<GrGLStencilOpSeparateProc> fStencilOpSeparate;
+        GrGLFunction<GrGLTexBufferProc> fTexBuffer;
         GrGLFunction<GrGLTexImage2DProc> fTexImage2D;
         GrGLFunction<GrGLTexParameteriProc> fTexParameteri;
         GrGLFunction<GrGLTexParameterivProc> fTexParameteriv;
         GrGLFunction<GrGLTexSubImage2DProc> fTexSubImage2D;
         GrGLFunction<GrGLTexStorage2DProc> fTexStorage2D;
         GrGLFunction<GrGLTextureBarrierProc> fTextureBarrier;
         GrGLFunction<GrGLDiscardFramebufferProc> fDiscardFramebuffer;
         GrGLFunction<GrGLUniform1fProc> fUniform1f;
         GrGLFunction<GrGLUniform1iProc> fUniform1i;
         GrGLFunction<GrGLUniform1fvProc> fUniform1fv;
@@ skipping 175 matching lines @@
         GrGLFunction<GrGLEnableVertexArrayProc> fEnableVertexArray;
         GrGLFunction<GrGLDisableVertexArrayProc> fDisableVertexArray;
         GrGLFunction<GrGLEnableVertexArrayAttribProc> fEnableVertexArrayAttrib;
         GrGLFunction<GrGLDisableVertexArrayAttribProc> fDisableVertexArrayAttrib;
         GrGLFunction<GrGLGetVertexArrayIntegervProc> fGetVertexArrayIntegerv;
         GrGLFunction<GrGLGetVertexArrayPointervProc> fGetVertexArrayPointerv;
         GrGLFunction<GrGLGetVertexArrayIntegeri_vProc> fGetVertexArrayIntegeri_v;
         GrGLFunction<GrGLGetVertexArrayPointeri_vProc> fGetVertexArrayPointeri_v;
         GrGLFunction<GrGLMapNamedBufferRangeProc> fMapNamedBufferRange;
         GrGLFunction<GrGLFlushMappedNamedBufferRangeProc> fFlushMappedNamedBufferRange;
+        // OpenGL 3.1
+        GrGLFunction<GrGLTextureBufferProc> fTextureBuffer;
 
         /* KHR_debug */
         GrGLFunction<GrGLDebugMessageControlProc> fDebugMessageControl;
         GrGLFunction<GrGLDebugMessageInsertProc> fDebugMessageInsert;
         GrGLFunction<GrGLDebugMessageCallbackProc> fDebugMessageCallback;
         GrGLFunction<GrGLGetDebugMessageLogProc> fGetDebugMessageLog;
         GrGLFunction<GrGLPushDebugGroupProc> fPushDebugGroup;
         GrGLFunction<GrGLPopDebugGroupProc> fPopDebugGroup;
         GrGLFunction<GrGLObjectLabelProc> fObjectLabel;
 
         /* EGL functions */
         GrGLFunction<GrEGLCreateImageProc> fEGLCreateImage;
         GrGLFunction<GrEGLDestroyImageProc> fEGLDestroyImage;
     } fFunctions;
 
     // Per-GL func callback
 #if GR_GL_PER_GL_FUNC_CALLBACK
     GrGLInterfaceCallbackProc fCallback;
     GrGLInterfaceCallbackData fCallbackData;
 #endif
 
     // This exists for internal testing.
     virtual void abandon() const {}
 };
 
 #endif