Import functionality for new GL backend

Brings in the following functionality:

  ARB_draw_instanced
  ARB_instanced_arrays
  NV_bindless_texture
  EXT_direct_state_access
  KHR_debug

Also cleans up some of the NVPR extension loading.

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/202c4c75fb806f751cf796850bf67fe9793e0643

Review URL: https://codereview.chromium.org/1185573003

13 files changed, 963 insertions, 219 deletions

diff --git a/include/gpu/gl/GrGLFunctions.h b/include/gpu/gl/GrGLFunctions.h
index cbab026968..8c6d88a23d 100644
--- a/include/gpu/gl/GrGLFunctions.h
+++ b/include/gpu/gl/GrGLFunctions.h
@@ -11,6 +11,9 @@
 
 #include "GrGLConfig.h"
 
+
+extern "C" {
+
 ////////////////////////////////////////////////////////////////////////////////
 
 /**
@@ -61,210 +64,350 @@ typedef signed long int GrGLintptr;
 typedef signed long int GrGLsizeiptr;
 #endif
 
+typedef void (GR_GL_FUNCTION_TYPE* GRGLDEBUGPROC)(GrGLenum source,
+                                                  GrGLenum type,
+                                                  GrGLuint id,
+                                                  GrGLenum severity,
+                                                  GrGLsizei length,
+                                                  const GrGLchar* message,
+                                                  const void* userParam);
+
 ///////////////////////////////////////////////////////////////////////////////
 
-extern "C" {
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLActiveTextureProc)(GrGLenum texture);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLAttachShaderProc)(GrGLuint program, GrGLuint shader);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBeginQueryProc)(GrGLenum target, GrGLuint id);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindAttribLocationProc)(GrGLuint program, GrGLuint index, const char* name);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindBufferProc)(GrGLenum target, GrGLuint buffer);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindFramebufferProc)(GrGLenum target, GrGLuint framebuffer);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindRenderbufferProc)(GrGLenum target, GrGLuint renderbuffer);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindTextureProc)(GrGLenum target, GrGLuint texture);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindFragDataLocationProc)(GrGLuint program, GrGLuint colorNumber, const GrGLchar* name);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindFragDataLocationIndexedProc)(GrGLuint program, GrGLuint colorNumber, GrGLuint index, const GrGLchar * name);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindVertexArrayProc)(GrGLuint array);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlendBarrierProc)();
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlendColorProc)(GrGLclampf red, GrGLclampf green, GrGLclampf blue, GrGLclampf alpha);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlendEquationProc)(GrGLenum mode);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlendFuncProc)(GrGLenum sfactor, GrGLenum dfactor);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlitFramebufferProc)(GrGLint srcX0, GrGLint srcY0, GrGLint srcX1, GrGLint srcY1, GrGLint dstX0, GrGLint dstY0, GrGLint dstX1, GrGLint dstY1, GrGLbitfield mask, GrGLenum filter);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBufferDataProc)(GrGLenum target, GrGLsizeiptr size, const GrGLvoid* data, GrGLenum usage);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBufferSubDataProc)(GrGLenum target, GrGLintptr offset, GrGLsizeiptr size, const GrGLvoid* data);
-    typedef GrGLenum (GR_GL_FUNCTION_TYPE* GrGLCheckFramebufferStatusProc)(GrGLenum target);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLClearProc)(GrGLbitfield mask);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLClearColorProc)(GrGLclampf red, GrGLclampf green, GrGLclampf blue, GrGLclampf alpha);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLClearStencilProc)(GrGLint s);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLClientActiveTextureProc)(GrGLenum texture);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLColorMaskProc)(GrGLboolean red, GrGLboolean green, GrGLboolean blue, GrGLboolean alpha);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompileShaderProc)(GrGLuint shader);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompressedTexImage2DProc)(GrGLenum target, GrGLint level, GrGLenum internalformat, GrGLsizei width, GrGLsizei height, GrGLint border, GrGLsizei imageSize, const GrGLvoid* data);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompressedTexSubImage2DProc)(GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLsizei imageSize, const GrGLvoid* data);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyTexSubImage2DProc)(GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyTextureCHROMIUMProc)(GrGLenum target, GrGLenum src, GrGLenum dst, GrGLint level, GrGLint format, GrGLenum type);
-    typedef GrGLuint (GR_GL_FUNCTION_TYPE* GrGLCreateProgramProc)(void);
-    typedef GrGLuint (GR_GL_FUNCTION_TYPE* GrGLCreateShaderProc)(GrGLenum type);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCullFaceProc)(GrGLenum mode);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteBuffersProc)(GrGLsizei n, const GrGLuint* buffers);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteFramebuffersProc)(GrGLsizei n, const GrGLuint *framebuffers);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteProgramProc)(GrGLuint program);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteQueriesProc)(GrGLsizei n, const GrGLuint *ids);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteRenderbuffersProc)(GrGLsizei n, const GrGLuint *renderbuffers);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteShaderProc)(GrGLuint shader);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteTexturesProc)(GrGLsizei n, const GrGLuint* textures);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteVertexArraysProc)(GrGLsizei n, const GrGLuint *arrays);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDepthMaskProc)(GrGLboolean flag);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDisableProc)(GrGLenum cap);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDisableVertexAttribArrayProc)(GrGLuint index);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawArraysProc)(GrGLenum mode, GrGLint first, GrGLsizei count);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawBufferProc)(GrGLenum mode);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawBuffersProc)(GrGLsizei n, const GrGLenum* bufs);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawElementsProc)(GrGLenum mode, GrGLsizei count, GrGLenum type, const GrGLvoid* indices);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLEnableProc)(GrGLenum cap);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLEnableVertexAttribArrayProc)(GrGLuint index);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLEndQueryProc)(GrGLenum target);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFinishProc)();
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFlushProc)();
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFlushMappedBufferRangeProc)(GrGLenum target, GrGLintptr offset, GrGLsizeiptr length);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFramebufferRenderbufferProc)(GrGLenum target, GrGLenum attachment, GrGLenum renderbuffertarget, GrGLuint renderbuffer);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFramebufferTexture2DProc)(GrGLenum target, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFramebufferTexture2DMultisampleProc)(GrGLenum target, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level, GrGLsizei samples);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFrontFaceProc)(GrGLenum mode);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenBuffersProc)(GrGLsizei n, GrGLuint* buffers);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenFramebuffersProc)(GrGLsizei n, GrGLuint *framebuffers);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenerateMipmapProc)(GrGLenum target);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenQueriesProc)(GrGLsizei n, GrGLuint *ids);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenRenderbuffersProc)(GrGLsizei n, GrGLuint *renderbuffers);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenTexturesProc)(GrGLsizei n, GrGLuint* textures);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenVertexArraysProc)(GrGLsizei n, GrGLuint *arrays);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetBufferParameterivProc)(GrGLenum target, GrGLenum pname, GrGLint* params);
-    typedef GrGLenum (GR_GL_FUNCTION_TYPE* GrGLGetErrorProc)();
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetFramebufferAttachmentParameterivProc)(GrGLenum target, GrGLenum attachment, GrGLenum pname, GrGLint* params);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetIntegervProc)(GrGLenum pname, GrGLint* params);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetProgramInfoLogProc)(GrGLuint program, GrGLsizei bufsize, GrGLsizei* length, char* infolog);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetProgramivProc)(GrGLuint program, GrGLenum pname, GrGLint* params);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryivProc)(GrGLenum GLtarget, GrGLenum pname, GrGLint *params);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryObjecti64vProc)(GrGLuint id, GrGLenum pname, GrGLint64 *params);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryObjectivProc)(GrGLuint id, GrGLenum pname, GrGLint *params);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryObjectui64vProc)(GrGLuint id, GrGLenum pname, GrGLuint64 *params);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryObjectuivProc)(GrGLuint id, GrGLenum pname, GrGLuint *params);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetRenderbufferParameterivProc)(GrGLenum target, GrGLenum pname, GrGLint* params);
-    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 GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetShaderPrecisionFormatProc)(GrGLenum shadertype, GrGLenum precisiontype, GrGLint *range, GrGLint *precision);
-    typedef const GrGLubyte* (GR_GL_FUNCTION_TYPE* GrGLGetStringProc)(GrGLenum name);
-    typedef const GrGLubyte* (GR_GL_FUNCTION_TYPE* GrGLGetStringiProc)(GrGLenum name, GrGLuint index);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetTexLevelParameterivProc)(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* GrGLInsertEventMarkerProc)(GrGLsizei length, const char* marker);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateBufferDataProc)(GrGLuint buffer);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateBufferSubDataProc)(GrGLuint buffer, GrGLintptr offset, GrGLsizeiptr length);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateFramebufferProc)(GrGLenum target, GrGLsizei numAttachments,  const GrGLenum *attachments);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateSubFramebufferProc)(GrGLenum target, GrGLsizei numAttachments, const GrGLenum *attachments, GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateTexImageProc)(GrGLuint texture, GrGLint level);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateTexSubImageProc)(GrGLuint texture, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLint zoffset, GrGLsizei width, GrGLsizei height, GrGLsizei depth);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLLineWidthProc)(GrGLfloat width);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLLinkProgramProc)(GrGLuint program);
-    typedef GrGLvoid* (GR_GL_FUNCTION_TYPE* GrGLMapBufferProc)(GrGLenum target, GrGLenum access);
-    typedef GrGLvoid* (GR_GL_FUNCTION_TYPE* GrGLMapBufferRangeProc)(GrGLenum target, GrGLintptr offset, GrGLsizeiptr length, GrGLbitfield access);
-    typedef GrGLvoid* (GR_GL_FUNCTION_TYPE* GrGLMapBufferSubDataProc)(GrGLuint target, GrGLintptr offset, GrGLsizeiptr size, GrGLenum access);
-    typedef GrGLvoid* (GR_GL_FUNCTION_TYPE* GrGLMapTexSubImage2DProc)(GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, GrGLenum access);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPixelStoreiProc)(GrGLenum pname, GrGLint param);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPopGroupMarkerProc)();
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPushGroupMarkerProc)(GrGLsizei length, const char* marker);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLQueryCounterProc)(GrGLuint id, GrGLenum target);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLRasterSamplesProc)(GrGLuint samples, GrGLboolean fixedsamplelocations);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLReadBufferProc)(GrGLenum src);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLReadPixelsProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, GrGLvoid* pixels);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLRenderbufferStorageProc)(GrGLenum target, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLRenderbufferStorageMultisampleProc)(GrGLenum target, GrGLsizei samples, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLResolveMultisampleFramebufferProc)();
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLScissorProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindUniformLocation)(GrGLuint program, GrGLint location, const char* name);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLActiveTextureProc)(GrGLenum texture);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLAttachShaderProc)(GrGLuint program, GrGLuint shader);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBeginQueryProc)(GrGLenum target, GrGLuint id);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindAttribLocationProc)(GrGLuint program, GrGLuint index, const char* name);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindBufferProc)(GrGLenum target, GrGLuint buffer);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindFramebufferProc)(GrGLenum target, GrGLuint framebuffer);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindRenderbufferProc)(GrGLenum target, GrGLuint renderbuffer);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindTextureProc)(GrGLenum target, GrGLuint texture);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindFragDataLocationProc)(GrGLuint program, GrGLuint colorNumber, const GrGLchar* name);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindFragDataLocationIndexedProc)(GrGLuint program, GrGLuint colorNumber, GrGLuint index, const GrGLchar * name);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindVertexArrayProc)(GrGLuint array);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlendBarrierProc)();
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlendColorProc)(GrGLclampf red, GrGLclampf green, GrGLclampf blue, GrGLclampf alpha);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlendEquationProc)(GrGLenum mode);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlendFuncProc)(GrGLenum sfactor, GrGLenum dfactor);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlitFramebufferProc)(GrGLint srcX0, GrGLint srcY0, GrGLint srcX1, GrGLint srcY1, GrGLint dstX0, GrGLint dstY0, GrGLint dstX1, GrGLint dstY1, GrGLbitfield mask, GrGLenum filter);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBufferDataProc)(GrGLenum target, GrGLsizeiptr size, const GrGLvoid* data, GrGLenum usage);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBufferSubDataProc)(GrGLenum target, GrGLintptr offset, GrGLsizeiptr size, const GrGLvoid* data);
+typedef GrGLenum (GR_GL_FUNCTION_TYPE* GrGLCheckFramebufferStatusProc)(GrGLenum target);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLClearProc)(GrGLbitfield mask);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLClearColorProc)(GrGLclampf red, GrGLclampf green, GrGLclampf blue, GrGLclampf alpha);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLClearStencilProc)(GrGLint s);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLClientActiveTextureProc)(GrGLenum texture);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLColorMaskProc)(GrGLboolean red, GrGLboolean green, GrGLboolean blue, GrGLboolean alpha);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompileShaderProc)(GrGLuint shader);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompressedTexImage2DProc)(GrGLenum target, GrGLint level, GrGLenum internalformat, GrGLsizei width, GrGLsizei height, GrGLint border, GrGLsizei imageSize, const GrGLvoid* data);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompressedTexSubImage2DProc)(GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLsizei imageSize, const GrGLvoid* data);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyTexSubImage2DProc)(GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyTextureCHROMIUMProc)(GrGLenum target, GrGLenum src, GrGLenum dst, GrGLint level, GrGLint format, GrGLenum type);
+typedef GrGLuint (GR_GL_FUNCTION_TYPE* GrGLCreateProgramProc)(void);
+typedef GrGLuint (GR_GL_FUNCTION_TYPE* GrGLCreateShaderProc)(GrGLenum type);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCullFaceProc)(GrGLenum mode);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteBuffersProc)(GrGLsizei n, const GrGLuint* buffers);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteFramebuffersProc)(GrGLsizei n, const GrGLuint *framebuffers);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteProgramProc)(GrGLuint program);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteQueriesProc)(GrGLsizei n, const GrGLuint *ids);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteRenderbuffersProc)(GrGLsizei n, const GrGLuint *renderbuffers);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteShaderProc)(GrGLuint shader);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteTexturesProc)(GrGLsizei n, const GrGLuint* textures);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteVertexArraysProc)(GrGLsizei n, const GrGLuint *arrays);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDepthMaskProc)(GrGLboolean flag);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDisableProc)(GrGLenum cap);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDisableVertexAttribArrayProc)(GrGLuint index);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawArraysProc)(GrGLenum mode, GrGLint first, GrGLsizei count);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawBufferProc)(GrGLenum mode);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawBuffersProc)(GrGLsizei n, const GrGLenum* bufs);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawElementsProc)(GrGLenum mode, GrGLsizei count, GrGLenum type, const GrGLvoid* indices);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLEnableProc)(GrGLenum cap);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLEnableVertexAttribArrayProc)(GrGLuint index);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLEndQueryProc)(GrGLenum target);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFinishProc)();
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFlushProc)();
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFlushMappedBufferRangeProc)(GrGLenum target, GrGLintptr offset, GrGLsizeiptr length);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFramebufferRenderbufferProc)(GrGLenum target, GrGLenum attachment, GrGLenum renderbuffertarget, GrGLuint renderbuffer);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFramebufferTexture2DProc)(GrGLenum target, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFramebufferTexture2DMultisampleProc)(GrGLenum target, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level, GrGLsizei samples);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFrontFaceProc)(GrGLenum mode);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenBuffersProc)(GrGLsizei n, GrGLuint* buffers);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenFramebuffersProc)(GrGLsizei n, GrGLuint *framebuffers);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenerateMipmapProc)(GrGLenum target);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenQueriesProc)(GrGLsizei n, GrGLuint *ids);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenRenderbuffersProc)(GrGLsizei n, GrGLuint *renderbuffers);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenTexturesProc)(GrGLsizei n, GrGLuint* textures);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenVertexArraysProc)(GrGLsizei n, GrGLuint *arrays);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetBufferParameterivProc)(GrGLenum target, GrGLenum pname, GrGLint* params);
+typedef GrGLenum (GR_GL_FUNCTION_TYPE* GrGLGetErrorProc)();
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetFramebufferAttachmentParameterivProc)(GrGLenum target, GrGLenum attachment, GrGLenum pname, GrGLint* params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetIntegervProc)(GrGLenum pname, GrGLint* params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetProgramInfoLogProc)(GrGLuint program, GrGLsizei bufsize, GrGLsizei* length, char* infolog);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetProgramivProc)(GrGLuint program, GrGLenum pname, GrGLint* params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryivProc)(GrGLenum GLtarget, GrGLenum pname, GrGLint *params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryObjecti64vProc)(GrGLuint id, GrGLenum pname, GrGLint64 *params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryObjectivProc)(GrGLuint id, GrGLenum pname, GrGLint *params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryObjectui64vProc)(GrGLuint id, GrGLenum pname, GrGLuint64 *params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryObjectuivProc)(GrGLuint id, GrGLenum pname, GrGLuint *params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetRenderbufferParameterivProc)(GrGLenum target, GrGLenum pname, GrGLint* params);
+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 GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetShaderPrecisionFormatProc)(GrGLenum shadertype, GrGLenum precisiontype, GrGLint *range, GrGLint *precision);
+typedef const GrGLubyte* (GR_GL_FUNCTION_TYPE* GrGLGetStringProc)(GrGLenum name);
+typedef const GrGLubyte* (GR_GL_FUNCTION_TYPE* GrGLGetStringiProc)(GrGLenum name, GrGLuint index);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetTexLevelParameterivProc)(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* GrGLInsertEventMarkerProc)(GrGLsizei length, const char* marker);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateBufferDataProc)(GrGLuint buffer);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateBufferSubDataProc)(GrGLuint buffer, GrGLintptr offset, GrGLsizeiptr length);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateFramebufferProc)(GrGLenum target, GrGLsizei numAttachments,  const GrGLenum *attachments);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateSubFramebufferProc)(GrGLenum target, GrGLsizei numAttachments, const GrGLenum *attachments, GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateTexImageProc)(GrGLuint texture, GrGLint level);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateTexSubImageProc)(GrGLuint texture, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLint zoffset, GrGLsizei width, GrGLsizei height, GrGLsizei depth);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLLineWidthProc)(GrGLfloat width);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLLinkProgramProc)(GrGLuint program);
+typedef GrGLvoid* (GR_GL_FUNCTION_TYPE* GrGLMapBufferProc)(GrGLenum target, GrGLenum access);
+typedef GrGLvoid* (GR_GL_FUNCTION_TYPE* GrGLMapBufferRangeProc)(GrGLenum target, GrGLintptr offset, GrGLsizeiptr length, GrGLbitfield access);
+typedef GrGLvoid* (GR_GL_FUNCTION_TYPE* GrGLMapBufferSubDataProc)(GrGLuint target, GrGLintptr offset, GrGLsizeiptr size, GrGLenum access);
+typedef GrGLvoid* (GR_GL_FUNCTION_TYPE* GrGLMapTexSubImage2DProc)(GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, GrGLenum access);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPixelStoreiProc)(GrGLenum pname, GrGLint param);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPopGroupMarkerProc)();
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPushGroupMarkerProc)(GrGLsizei length, const char* marker);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLQueryCounterProc)(GrGLuint id, GrGLenum target);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLRasterSamplesProc)(GrGLuint samples, GrGLboolean fixedsamplelocations);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLReadBufferProc)(GrGLenum src);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLReadPixelsProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, GrGLvoid* pixels);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLRenderbufferStorageProc)(GrGLenum target, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLRenderbufferStorageMultisampleProc)(GrGLenum target, GrGLsizei samples, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLResolveMultisampleFramebufferProc)();
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLScissorProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindUniformLocation)(GrGLuint program, GrGLint location, const char* name);
 
 #if GR_GL_USE_NEW_SHADER_SOURCE_SIGNATURE
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLShaderSourceProc)(GrGLuint shader, GrGLsizei count, const char* const * str, const GrGLint* length);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLShaderSourceProc)(GrGLuint shader, GrGLsizei count, const char* const * str, const GrGLint* length);
 #else
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLShaderSourceProc)(GrGLuint shader, GrGLsizei count, const char** str, const GrGLint* length);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLShaderSourceProc)(GrGLuint shader, GrGLsizei count, const char** str, const GrGLint* length);
 #endif
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilFuncProc)(GrGLenum func, GrGLint ref, GrGLuint mask);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilFuncSeparateProc)(GrGLenum face, GrGLenum func, GrGLint ref, GrGLuint mask);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilMaskProc)(GrGLuint mask);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilMaskSeparateProc)(GrGLenum face, GrGLuint mask);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilOpProc)(GrGLenum fail, GrGLenum zfail, GrGLenum zpass);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilOpSeparateProc)(GrGLenum face, GrGLenum fail, GrGLenum zfail, GrGLenum zpass);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTexImage2DProc)(GrGLenum target, GrGLint level, GrGLint internalformat, GrGLsizei width, GrGLsizei height, GrGLint border, GrGLenum format, GrGLenum type, const GrGLvoid* pixels);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTexParameteriProc)(GrGLenum target, GrGLenum pname, GrGLint param);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTexParameterivProc)(GrGLenum target, GrGLenum pname, const GrGLint* params);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTexStorage2DProc)(GrGLenum target, GrGLsizei levels, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDiscardFramebufferProc)(GrGLenum target, GrGLsizei numAttachments, const GrGLenum* attachments);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTexSubImage2DProc)(GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, const GrGLvoid* pixels);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTextureBarrierProc)();
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform1fProc)(GrGLint location, GrGLfloat v0);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform1iProc)(GrGLint location, GrGLint v0);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform1fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform1ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform2fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform2iProc)(GrGLint location, GrGLint v0, GrGLint v1);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform2fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform2ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform3fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1, GrGLfloat v2);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform3iProc)(GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform3fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform3ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform4fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1, GrGLfloat v2, GrGLfloat v3);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform4iProc)(GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2, GrGLint v3);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform4fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform4ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniformMatrix2fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniformMatrix3fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniformMatrix4fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value);
-    typedef GrGLboolean (GR_GL_FUNCTION_TYPE* GrGLUnmapBufferProc)(GrGLenum target);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUnmapBufferSubDataProc)(const GrGLvoid* mem);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUnmapTexSubImage2DProc)(const GrGLvoid* mem);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUseProgramProc)(GrGLuint program);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttrib1fProc)(GrGLuint indx, const GrGLfloat value);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttrib2fvProc)(GrGLuint indx, const GrGLfloat* values);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttrib3fvProc)(GrGLuint indx, const GrGLfloat* values);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttrib4fvProc)(GrGLuint indx, const GrGLfloat* values);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttribPointerProc)(GrGLuint indx, GrGLint size, GrGLenum type, GrGLboolean normalized, GrGLsizei stride, const GrGLvoid* ptr);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLViewportProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilFuncProc)(GrGLenum func, GrGLint ref, GrGLuint mask);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilFuncSeparateProc)(GrGLenum face, GrGLenum func, GrGLint ref, GrGLuint mask);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilMaskProc)(GrGLuint mask);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilMaskSeparateProc)(GrGLenum face, GrGLuint mask);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilOpProc)(GrGLenum fail, GrGLenum zfail, GrGLenum zpass);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilOpSeparateProc)(GrGLenum face, GrGLenum fail, GrGLenum zfail, GrGLenum zpass);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTexImage2DProc)(GrGLenum target, GrGLint level, GrGLint internalformat, GrGLsizei width, GrGLsizei height, GrGLint border, GrGLenum format, GrGLenum type, const GrGLvoid* pixels);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTexParameteriProc)(GrGLenum target, GrGLenum pname, GrGLint param);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTexParameterivProc)(GrGLenum target, GrGLenum pname, const GrGLint* params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTexStorage2DProc)(GrGLenum target, GrGLsizei levels, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDiscardFramebufferProc)(GrGLenum target, GrGLsizei numAttachments, const GrGLenum* attachments);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTexSubImage2DProc)(GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, const GrGLvoid* pixels);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTextureBarrierProc)();
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform1fProc)(GrGLint location, GrGLfloat v0);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform1iProc)(GrGLint location, GrGLint v0);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform1fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform1ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform2fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform2iProc)(GrGLint location, GrGLint v0, GrGLint v1);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform2fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform2ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform3fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1, GrGLfloat v2);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform3iProc)(GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform3fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform3ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform4fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1, GrGLfloat v2, GrGLfloat v3);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform4iProc)(GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2, GrGLint v3);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform4fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform4ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniformMatrix2fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniformMatrix3fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniformMatrix4fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value);
+typedef GrGLboolean (GR_GL_FUNCTION_TYPE* GrGLUnmapBufferProc)(GrGLenum target);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUnmapBufferSubDataProc)(const GrGLvoid* mem);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUnmapTexSubImage2DProc)(const GrGLvoid* mem);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUseProgramProc)(GrGLuint program);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttrib1fProc)(GrGLuint indx, const GrGLfloat value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttrib2fvProc)(GrGLuint indx, const GrGLfloat* values);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttrib3fvProc)(GrGLuint indx, const GrGLfloat* values);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttrib4fvProc)(GrGLuint indx, const GrGLfloat* values);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttribPointerProc)(GrGLuint indx, GrGLint size, GrGLenum type, GrGLboolean normalized, GrGLsizei stride, const GrGLvoid* ptr);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLViewportProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
+
+/* GL_NV_path_rendering */
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLMatrixLoadfProc)(GrGLenum matrixMode, const GrGLfloat* m);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLMatrixLoadIdentityProc)(GrGLenum);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathCommandsProc)(GrGLuint path, GrGLsizei numCommands, const GrGLubyte *commands, GrGLsizei numCoords, GrGLenum coordType, const GrGLvoid *coords);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathCoordsProc)(GrGLuint path, GrGLsizei numCoords, GrGLenum coordType, const GrGLvoid *coords);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathSubCoordsProc)(GrGLuint path, GrGLsizei coordStart, GrGLsizei numCoords, GrGLenum coordType, const GrGLvoid *coords);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathStringProc)(GrGLuint path, GrGLenum format, GrGLsizei length, const GrGLvoid *pathString);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathGlyphsProc)(GrGLuint firstPathName, GrGLenum fontTarget, const GrGLvoid *fontName, GrGLbitfield fontStyle, GrGLsizei numGlyphs, GrGLenum type, const GrGLvoid *charcodes, GrGLenum handleMissingGlyphs, GrGLuint pathParameterTemplate, GrGLfloat emScale);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathGlyphRangeProc)(GrGLuint firstPathName, GrGLenum fontTarget, const GrGLvoid *fontName, GrGLbitfield fontStyle, GrGLuint firstGlyph, GrGLsizei numGlyphs, GrGLenum handleMissingGlyphs, GrGLuint pathParameterTemplate, GrGLfloat emScale);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLWeightPathsProc)(GrGLuint resultPath, GrGLsizei numPaths, const GrGLuint paths[], const GrGLfloat weights[]);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyPathProc)(GrGLuint resultPath, GrGLuint srcPath);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInterpolatePathsProc)(GrGLuint resultPath, GrGLuint pathA, GrGLuint pathB, GrGLfloat weight);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTransformPathProc)(GrGLuint resultPath, GrGLuint srcPath, GrGLenum transformType, const GrGLfloat *transformValues);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathParameteriProc)(GrGLuint path, GrGLenum pname, GrGLint value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathParameterfProc)(GrGLuint path, GrGLenum pname, GrGLfloat value);
+typedef GrGLuint (GR_GL_FUNCTION_TYPE* GrGLGenPathsProc)(GrGLsizei range);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeletePathsProc)(GrGLuint path, GrGLsizei range);
+typedef GrGLboolean (GR_GL_FUNCTION_TYPE* GrGLIsPathProc)(GrGLuint path);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathStencilFuncProc)(GrGLenum func, GrGLint ref, GrGLuint mask);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilFillPathProc)(GrGLuint path, GrGLenum fillMode, GrGLuint mask);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilStrokePathProc)(GrGLuint path, GrGLint reference, GrGLuint mask);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilFillPathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLenum fillMode, GrGLuint mask, GrGLenum transformType, const GrGLfloat *transformValues);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilStrokePathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLint reference, GrGLuint mask, GrGLenum transformType, const GrGLfloat *transformValues);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathTexGenProc)(GrGLenum texCoordSet, GrGLenum genMode, GrGLint components, const GrGLfloat *coeffs);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverFillPathProc)(GrGLuint path, GrGLenum coverMode);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverStrokePathProc)(GrGLuint name, GrGLenum coverMode);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverFillPathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLenum coverMode, GrGLenum transformType, const GrGLfloat *transformValues);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverStrokePathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLenum coverMode, GrGLenum transformType, const GrGLfloat* transformValues);
+// NV_path_rendering v1.2
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilThenCoverFillPathProc)(GrGLuint path, GrGLenum fillMode, GrGLuint mask, GrGLenum coverMode);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilThenCoverStrokePathProc)(GrGLuint path, GrGLint reference, GrGLuint mask, GrGLenum coverMode);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilThenCoverFillPathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLenum fillMode, GrGLuint mask, GrGLenum coverMode, GrGLenum transformType, const GrGLfloat *transformValues);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilThenCoverStrokePathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLint reference, GrGLuint mask, GrGLenum coverMode, GrGLenum transformType, const GrGLfloat *transformValues);
+// NV_path_rendering v1.3
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramPathFragmentInputGenProc)(GrGLuint program, GrGLint location, GrGLenum genMode, GrGLint components,const GrGLfloat *coeffs);
+typedef GrGLenum (GR_GL_FUNCTION_TYPE* GrGLPathMemoryGlyphIndexArrayProc)(GrGLuint firstPathName, GrGLenum fontTarget, GrGLsizeiptr fontSize, const GrGLvoid *fontData, GrGLsizei faceIndex, GrGLuint firstGlyphIndex, GrGLsizei numGlyphs, GrGLuint pathParameterTemplate, GrGLfloat emScale);
+
+/* ARB_program_interface_query */
+typedef GrGLint (GR_GL_FUNCTION_TYPE* GrGLGetProgramResourceLocationProc)(GrGLuint program, GrGLenum programInterface, const GrGLchar *name);
+
+/* GL_NV_framebuffer_mixed_samples */
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverageModulationProc)(GrGLenum components);
+
+/* ARB_draw_instanced */
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawArraysInstancedProc)(GrGLenum mode, GrGLint first, GrGLsizei count, GrGLsizei primcount);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawElementsInstancedProc)(GrGLenum mode, GrGLsizei count, GrGLenum type, const GrGLvoid *indices, GrGLsizei primcount);
+
+/* ARB_instanced_arrays */
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttribDivisorProc)(GrGLuint index, GrGLuint divisor);
+
+/* NV_bindless_texture */
+typedef GrGLuint64 (GR_GL_FUNCTION_TYPE* GrGLGetTextureHandleProc)(GrGLuint texture);
+typedef GrGLuint64 (GR_GL_FUNCTION_TYPE* GrGLGetTextureSamplerHandleProc)(GrGLuint texture, GrGLuint sampler);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLMakeTextureHandleResidentProc)(GrGLuint64 handle);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLMakeTextureHandleNonResidentProc)(GrGLuint64 handle);
+typedef GrGLuint64 (GR_GL_FUNCTION_TYPE* GrGLGetImageHandleProc)(GrGLuint texture, GrGLint level, GrGLboolean layered, GrGLint layer, GrGLint format);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLMakeImageHandleResidentProc)(GrGLuint64 handle, GrGLenum access);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLMakeImageHandleNonResidentProc)(GrGLuint64 handle);
+typedef GrGLboolean (GR_GL_FUNCTION_TYPE* GrGLIsTextureHandleResidentProc)(GrGLuint64 handle);
+typedef GrGLboolean (GR_GL_FUNCTION_TYPE* GrGLIsImageHandleResidentProc)(GrGLuint64 handle);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniformHandleui64Proc)(GrGLint location, GrGLuint64 v0);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniformHandleui64vProc)(GrGLint location, GrGLsizei count, const GrGLuint64 *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniformHandleui64Proc)(GrGLuint program, GrGLint location, GrGLuint64 v0);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniformHandleui64vProc)(GrGLuint program, GrGLint location, GrGLsizei count, const GrGLuint64 *value);
+
+/* EXT_direct_state_access */
+// (In the future some of these methods may be omitted)
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTextureParameteriProc)(GrGLuint texture, GrGLenum target, GrGLenum pname, GrGLint param);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTextureParameterivProc)(GrGLuint texture, GrGLenum target, GrGLenum pname, const GrGLint *param);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTextureParameterfProc)(GrGLuint texture, GrGLenum target, GrGLenum pname, float param);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTextureParameterfvProc)(GrGLuint texture, GrGLenum target, GrGLenum pname, const float *param);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTextureImage1DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLint GrGLinternalformat, GrGLsizei width, GrGLint border, GrGLenum format, GrGLenum type, const GrGLvoid *pixels);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTextureImage2DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLint GrGLinternalformat, GrGLsizei width, GrGLsizei height, GrGLint border, GrGLenum format, GrGLenum type, const GrGLvoid *pixels);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTextureSubImage1DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLint xoffset, GrGLsizei width, GrGLenum format, GrGLenum type, const GrGLvoid *pixels);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTextureSubImage2DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, const GrGLvoid *pixels);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyTextureImage1DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLenum GrGLinternalformat, GrGLint x, GrGLint y, GrGLsizei width, GrGLint border);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyTextureImage2DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLenum GrGLinternalformat, GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height, GrGLint border);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyTextureSubImage1DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint x, GrGLint y, GrGLsizei width);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyTextureSubImage2DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetTextureImageProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLenum format, GrGLenum type, GrGLvoid *pixels);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetTextureParameterfvProc)(GrGLuint texture, GrGLenum target, GrGLenum pname, float *params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetTextureParameterivProc)(GrGLuint texture, GrGLenum target, GrGLenum pname, GrGLint *params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetTextureLevelParameterfvProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLenum pname, float *params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetTextureLevelParameterivProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLenum pname, GrGLint *params);
+// OpenGL 1.2
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTextureImage3DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLint GrGLinternalformat, GrGLsizei width, GrGLsizei height, GrGLsizei depth, GrGLint border, GrGLenum format, GrGLenum type, const GrGLvoid *pixels);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTextureSubImage3DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLint zoffset, GrGLsizei width, GrGLsizei height, GrGLsizei depth, GrGLenum format, GrGLenum type, const GrGLvoid *pixels);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyTextureSubImage3DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLint zoffset, GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompressedTextureImage3DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLenum GrGLinternalformat, GrGLsizei width, GrGLsizei height, GrGLsizei depth, GrGLint border, GrGLsizei imageSize, const GrGLvoid *data);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompressedTextureImage2DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLenum GrGLinternalformat, GrGLsizei width, GrGLsizei height, GrGLint border, GrGLsizei imageSize, const GrGLvoid *data);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompressedTextureImage1DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLenum GrGLinternalformat, GrGLsizei width, GrGLint border, GrGLsizei imageSize, const GrGLvoid *data);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompressedTextureSubImage3DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLint zoffset, GrGLsizei width, GrGLsizei height, GrGLsizei depth, GrGLenum format, GrGLsizei imageSize, const GrGLvoid *data);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompressedTextureSubImage2DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLsizei imageSize, const GrGLvoid *data);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompressedTextureSubImage1DProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLint xoffset, GrGLsizei width, GrGLenum format, GrGLsizei imageSize, const GrGLvoid *data);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetCompressedTextureImageProc)(GrGLuint texture, GrGLenum target, GrGLint level, GrGLvoid *img);
+// OpenGL 1.5
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLNamedBufferDataProc)(GrGLuint buffer, GrGLsizeiptr size, const GrGLvoid *data, GrGLenum usage);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLNamedBufferSubDataProc)(GrGLuint buffer, GrGLintptr offset, GrGLsizeiptr size, const GrGLvoid *data);
+typedef GrGLvoid* (GR_GL_FUNCTION_TYPE* GrGLMapNamedBufferProc)(GrGLuint buffer, GrGLenum access);
+typedef GrGLboolean (GR_GL_FUNCTION_TYPE* GrGLUnmapNamedBufferProc)(GrGLuint buffer);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetNamedBufferParameterivProc)(GrGLuint buffer, GrGLenum pname, GrGLint *params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetNamedBufferPointervProc)(GrGLuint buffer, GrGLenum pname, GrGLvoid* *params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetNamedBufferSubDataProc)(GrGLuint buffer, GrGLintptr offset, GrGLsizeiptr size, GrGLvoid *data);
+// OpenGL 2.0
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform1fProc)(GrGLuint program, GrGLint location, float v0);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform2fProc)(GrGLuint program, GrGLint location, float v0, float v1);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform3fProc)(GrGLuint program, GrGLint location, float v0, float v1, float v2);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform4fProc)(GrGLuint program, GrGLint location, float v0, float v1, float v2, float v3);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform1iProc)(GrGLuint program, GrGLint location, GrGLint v0);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform2iProc)(GrGLuint program, GrGLint location, GrGLint v0, GrGLint v1);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform3iProc)(GrGLuint program, GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform4iProc)(GrGLuint program, GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2, GrGLint v3);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform1fvProc)(GrGLuint program, GrGLint location, GrGLsizei count, const float *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform2fvProc)(GrGLuint program, GrGLint location, GrGLsizei count, const float *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform3fvProc)(GrGLuint program, GrGLint location, GrGLsizei count, const float *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform4fvProc)(GrGLuint program, GrGLint location, GrGLsizei count, const float *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform1ivProc)(GrGLuint program, GrGLint location, GrGLsizei count, const GrGLint *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform2ivProc)(GrGLuint program, GrGLint location, GrGLsizei count, const GrGLint *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform3ivProc)(GrGLuint program, GrGLint location, GrGLsizei count, const GrGLint *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniform4ivProc)(GrGLuint program, GrGLint location, GrGLsizei count, const GrGLint *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniformMatrix2fvProc)(GrGLuint program, GrGLint location, GrGLsizei count, GrGLboolean transpose, const float *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniformMatrix3fvProc)(GrGLuint program, GrGLint location, GrGLsizei count, GrGLboolean transpose, const float *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniformMatrix4fvProc)(GrGLuint program, GrGLint location, GrGLsizei count, GrGLboolean transpose, const float *value);
+// OpenGL 2.1
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniformMatrix2x3fvProc)(GrGLuint program, GrGLint location, GrGLsizei count, GrGLboolean transpose, const float *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniformMatrix3x2fvProc)(GrGLuint program, GrGLint location, GrGLsizei count, GrGLboolean transpose, const float *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniformMatrix2x4fvProc)(GrGLuint program, GrGLint location, GrGLsizei count, GrGLboolean transpose, const float *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniformMatrix4x2fvProc)(GrGLuint program, GrGLint location, GrGLsizei count, GrGLboolean transpose, const float *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniformMatrix3x4fvProc)(GrGLuint program, GrGLint location, GrGLsizei count, GrGLboolean transpose, const float *value);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramUniformMatrix4x3fvProc)(GrGLuint program, GrGLint location, GrGLsizei count, GrGLboolean transpose, const float *value);
+// OpenGL 3.0
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLNamedRenderbufferStorageProc)(GrGLuint renderbuffer, GrGLenum GrGLinternalformat, GrGLsizei width, GrGLsizei height);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetNamedRenderbufferParameterivProc)(GrGLuint renderbuffer, GrGLenum pname, GrGLint *params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLNamedRenderbufferStorageMultisampleProc)(GrGLuint renderbuffer, GrGLsizei samples, GrGLenum GrGLinternalformat, GrGLsizei width, GrGLsizei height);
+typedef GrGLenum (GR_GL_FUNCTION_TYPE* GrGLCheckNamedFramebufferStatusProc)(GrGLuint framebuffer, GrGLenum target);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLNamedFramebufferTexture1DProc)(GrGLuint framebuffer, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLNamedFramebufferTexture2DProc)(GrGLuint framebuffer, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLNamedFramebufferTexture3DProc)(GrGLuint framebuffer, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level, GrGLint zoffset);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLNamedFramebufferRenderbufferProc)(GrGLuint framebuffer, GrGLenum attachment, GrGLenum renderbuffertarget, GrGLuint renderbuffer);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetNamedFramebufferAttachmentParameterivProc)(GrGLuint framebuffer, GrGLenum attachment, GrGLenum pname, GrGLint *params);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenerateTextureMipmapProc)(GrGLuint texture, GrGLenum target);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFramebufferDrawBufferProc)(GrGLuint framebuffer, GrGLenum mode);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFramebufferDrawBuffersProc)(GrGLuint framebuffer, GrGLsizei n, const GrGLenum *bufs);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFramebufferReadBufferProc)(GrGLuint framebuffer, GrGLenum mode);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetFramebufferParameterivProc)(GrGLuint framebuffer, GrGLenum pname, GrGLint *param);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLNamedCopyBufferSubDataProc)(GrGLuint readBuffer, GrGLuint writeBuffer, GrGLintptr readOffset, GrGLintptr writeOffset, GrGLsizeiptr size);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexArrayVertexOffsetProc)(GrGLuint vaobj, GrGLuint buffer, GrGLint size, GrGLenum type, GrGLsizei stride, GrGLintptr offset);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexArrayColorOffsetProc)(GrGLuint vaobj, GrGLuint buffer, GrGLint size, GrGLenum type, GrGLsizei stride, GrGLintptr offset);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexArrayEdgeFlagOffsetProc)(GrGLuint vaobj, GrGLuint buffer, GrGLsizei stride, GrGLintptr offset);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexArrayIndexOffsetProc)(GrGLuint vaobj, GrGLuint buffer, GrGLenum type, GrGLsizei stride, GrGLintptr offset);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexArrayNormalOffsetProc)(GrGLuint vaobj, GrGLuint buffer, GrGLenum type, GrGLsizei stride, GrGLintptr offset);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexArrayTexCoordOffsetProc)(GrGLuint vaobj, GrGLuint buffer, GrGLint size, GrGLenum type, GrGLsizei stride, GrGLintptr offset);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexArrayMultiTexCoordOffsetProc)(GrGLuint vaobj, GrGLuint buffer, GrGLenum texunit, GrGLint size, GrGLenum type, GrGLsizei stride, GrGLintptr offset);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexArrayFogCoordOffsetProc)(GrGLuint vaobj, GrGLuint buffer, GrGLenum type, GrGLsizei stride, GrGLintptr offset);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexArraySecondaryColorOffsetProc)(GrGLuint vaobj, GrGLuint buffer, GrGLint size, GrGLenum type, GrGLsizei stride, GrGLintptr offset);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexArrayVertexAttribOffsetProc)(GrGLuint vaobj, GrGLuint buffer, GrGLuint index, GrGLint size, GrGLenum type, GrGLboolean normalized, GrGLsizei stride, GrGLintptr offset);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexArrayVertexAttribIOffsetProc)(GrGLuint vaobj, GrGLuint buffer, GrGLuint index, GrGLint size, GrGLenum type, GrGLsizei stride, GrGLintptr offset);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLEnableVertexArrayProc)(GrGLuint vaobj, GrGLenum array);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDisableVertexArrayProc)(GrGLuint vaobj, GrGLenum array);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLEnableVertexArrayAttribProc)(GrGLuint vaobj, GrGLuint index);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDisableVertexArrayAttribProc)(GrGLuint vaobj, GrGLuint index);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetVertexArrayIntegervProc)(GrGLuint vaobj, GrGLenum pname, GrGLint *param);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetVertexArrayPointervProc)(GrGLuint vaobj, GrGLenum pname, GrGLvoid **param);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetVertexArrayIntegeri_vProc)(GrGLuint vaobj, GrGLuint index, GrGLenum pname, GrGLint *param);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetVertexArrayPointeri_vProc)(GrGLuint vaobj, GrGLuint index, GrGLenum pname, GrGLvoid **param);
+typedef GrGLvoid* (GR_GL_FUNCTION_TYPE* GrGLMapNamedBufferRangeProc)(GrGLuint buffer, GrGLintptr offset, GrGLsizeiptr length, GrGLbitfield access);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFlushMappedNamedBufferRangeProc)(GrGLuint buffer, GrGLintptr offset, GrGLsizeiptr length);
+
+/* KHR_debug */
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDebugMessageControlProc)(GrGLenum source, GrGLenum type, GrGLenum severity, GrGLsizei count, const GrGLuint* ids, GrGLboolean enabled);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDebugMessageInsertProc)(GrGLenum source, GrGLenum type, GrGLuint id, GrGLenum severity, GrGLsizei length,  const GrGLchar* buf);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDebugMessageCallbackProc)(GRGLDEBUGPROC callback, const GrGLvoid* userParam);
+typedef GrGLuint (GR_GL_FUNCTION_TYPE* GrGLGetDebugMessageLogProc)(GrGLuint count, GrGLsizei bufSize, GrGLenum* sources, GrGLenum* types, GrGLuint* ids, GrGLenum* severities, GrGLsizei* lengths,  GrGLchar* messageLog);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPushDebugGroupProc)(GrGLenum source, GrGLuint id, GrGLsizei length,  const GrGLchar * message);
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPopDebugGroupProc)();
+typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLObjectLabelProc)(GrGLenum identifier, GrGLuint name, GrGLsizei length, const GrGLchar *label);
 
-    // Experimental: Functions for GL_NV_path_rendering. These will be
-    // alphabetized with the above functions once this is fully supported
-    // (and functions we are unlikely to use will possibly be omitted).
-    // EXT_direct_state_access
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLMatrixLoadfProc)(GrGLenum matrixMode, const GrGLfloat* m);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLMatrixLoadIdentityProc)(GrGLenum);
-    // ARB_program_interface_query
-    typedef GrGLint (GR_GL_FUNCTION_TYPE* GrGLGetProgramResourceLocationProc)(GrGLuint program, GrGLenum programInterface, const GrGLchar *name);
-    // NV_path_rendering
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathCommandsProc)(GrGLuint path, GrGLsizei numCommands, const GrGLubyte *commands, GrGLsizei numCoords, GrGLenum coordType, const GrGLvoid *coords);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathCoordsProc)(GrGLuint path, GrGLsizei numCoords, GrGLenum coordType, const GrGLvoid *coords);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathSubCoordsProc)(GrGLuint path, GrGLsizei coordStart, GrGLsizei numCoords, GrGLenum coordType, const GrGLvoid *coords);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathStringProc)(GrGLuint path, GrGLenum format, GrGLsizei length, const GrGLvoid *pathString);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathGlyphsProc)(GrGLuint firstPathName, GrGLenum fontTarget, const GrGLvoid *fontName, GrGLbitfield fontStyle, GrGLsizei numGlyphs, GrGLenum type, const GrGLvoid *charcodes, GrGLenum handleMissingGlyphs, GrGLuint pathParameterTemplate, GrGLfloat emScale);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathGlyphRangeProc)(GrGLuint firstPathName, GrGLenum fontTarget, const GrGLvoid *fontName, GrGLbitfield fontStyle, GrGLuint firstGlyph, GrGLsizei numGlyphs, GrGLenum handleMissingGlyphs, GrGLuint pathParameterTemplate, GrGLfloat emScale);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLWeightPathsProc)(GrGLuint resultPath, GrGLsizei numPaths, const GrGLuint paths[], const GrGLfloat weights[]);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyPathProc)(GrGLuint resultPath, GrGLuint srcPath);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInterpolatePathsProc)(GrGLuint resultPath, GrGLuint pathA, GrGLuint pathB, GrGLfloat weight);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTransformPathProc)(GrGLuint resultPath, GrGLuint srcPath, GrGLenum transformType, const GrGLfloat *transformValues);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathParameteriProc)(GrGLuint path, GrGLenum pname, GrGLint value);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathParameterfProc)(GrGLuint path, GrGLenum pname, GrGLfloat value);
-    typedef GrGLuint (GR_GL_FUNCTION_TYPE* GrGLGenPathsProc)(GrGLsizei range);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeletePathsProc)(GrGLuint path, GrGLsizei range);
-    typedef GrGLboolean (GR_GL_FUNCTION_TYPE* GrGLIsPathProc)(GrGLuint path);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathStencilFuncProc)(GrGLenum func, GrGLint ref, GrGLuint mask);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilFillPathProc)(GrGLuint path, GrGLenum fillMode, GrGLuint mask);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilStrokePathProc)(GrGLuint path, GrGLint reference, GrGLuint mask);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilFillPathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLenum fillMode, GrGLuint mask, GrGLenum transformType, const GrGLfloat *transformValues);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilStrokePathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLint reference, GrGLuint mask, GrGLenum transformType, const GrGLfloat *transformValues);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathTexGenProc)(GrGLenum texCoordSet, GrGLenum genMode, GrGLint components, const GrGLfloat *coeffs);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverFillPathProc)(GrGLuint path, GrGLenum coverMode);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverStrokePathProc)(GrGLuint name, GrGLenum coverMode);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverFillPathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLenum coverMode, GrGLenum transformType, const GrGLfloat *transformValues);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverStrokePathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLenum coverMode, GrGLenum transformType, const GrGLfloat* transformValues);
-    // NV_path_rendering v1.2
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilThenCoverFillPathProc)(GrGLuint path, GrGLenum fillMode, GrGLuint mask, GrGLenum coverMode);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilThenCoverStrokePathProc)(GrGLuint path, GrGLint reference, GrGLuint mask, GrGLenum coverMode);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilThenCoverFillPathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLenum fillMode, GrGLuint mask, GrGLenum coverMode, GrGLenum transformType, const GrGLfloat *transformValues);
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilThenCoverStrokePathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLint reference, GrGLuint mask, GrGLenum coverMode, GrGLenum transformType, const GrGLfloat *transformValues);
-    // NV_path_rendering v1.3
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramPathFragmentInputGenProc)(GrGLuint program, GrGLint location, GrGLenum genMode, GrGLint components,const GrGLfloat *coeffs);
-    typedef GrGLenum (GR_GL_FUNCTION_TYPE* GrGLPathMemoryGlyphIndexArrayProc)(GrGLuint firstPathName, GrGLenum fontTarget, GrGLsizeiptr fontSize, const GrGLvoid *fontData, GrGLsizei faceIndex, GrGLuint firstGlyphIndex, GrGLsizei numGlyphs, GrGLuint pathParameterTemplate, GrGLfloat emScale);
-    // GL_NV_framebuffer_mixed_samples
-    typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverageModulationProc)(GrGLenum components);
 }  // extern "C"
 
 #endif
diff --git a/include/gpu/gl/GrGLInterface.h b/include/gpu/gl/GrGLInterface.h
index 27f1eccda7..1901cb2dee 100644
--- a/include/gpu/gl/GrGLInterface.h
+++ b/include/gpu/gl/GrGLInterface.h
@@ -240,8 +240,6 @@ public:
         GLPtr<GrGLMapBufferRangeProc> fMapBufferRange;
         GLPtr<GrGLMapBufferSubDataProc> fMapBufferSubData;
         GLPtr<GrGLMapTexSubImage2DProc> fMapTexSubImage2D;
-        GLPtr<GrGLMatrixLoadfProc> fMatrixLoadf;
-        GLPtr<GrGLMatrixLoadIdentityProc> fMatrixLoadIdentity;
         GLPtr<GrGLPixelStoreiProc> fPixelStorei;
         GLPtr<GrGLPopGroupMarkerProc> fPopGroupMarker;
         GLPtr<GrGLPushGroupMarkerProc> fPushGroupMarker;
@@ -323,9 +321,9 @@ public:
         GLPtr<GrGLVertexAttribPointerProc> fVertexAttribPointer;
         GLPtr<GrGLViewportProc> fViewport;
 
-        // Experimental: Functions for GL_NV_path_rendering. These will be
-        // alphabetized with the above functions once this is fully supported
-        // (and functions we are unlikely to use will possibly be omitted).
+        /* GL_NV_path_rendering */
+        GLPtr<GrGLMatrixLoadfProc> fMatrixLoadf;
+        GLPtr<GrGLMatrixLoadIdentityProc> fMatrixLoadIdentity;
         GLPtr<GrGLGetProgramResourceLocationProc> fGetProgramResourceLocation;
         GLPtr<GrGLPathCommandsProc> fPathCommands;
         GLPtr<GrGLPathCoordsProc> fPathCoords;
@@ -352,8 +350,146 @@ public:
         // NV_path_rendering v1.3
         GLPtr<GrGLProgramPathFragmentInputGenProc> fProgramPathFragmentInputGen;
         GLPtr<GrGLPathMemoryGlyphIndexArrayProc> fPathMemoryGlyphIndexArray;
-        // NV_framebuffer_mixed_samples
+
+        /* NV_framebuffer_mixed_samples */
         GLPtr<GrGLCoverageModulationProc> fCoverageModulation;
+
+        /* ARB_draw_instanced */
+        GLPtr<GrGLDrawArraysInstancedProc> fDrawArraysInstanced;
+        GLPtr<GrGLDrawElementsInstancedProc> fDrawElementsInstanced;
+
+        /* ARB_instanced_arrays */
+        GLPtr<GrGLVertexAttribDivisorProc> fVertexAttribDivisor;
+
+        /* NV_bindless_texture */
+        // We use the NVIDIA verson for now because it does not require dynamically uniform handles.
+        // We may switch the the ARB version and/or omit methods in the future.
+        GLPtr<GrGLGetTextureHandleProc> fGetTextureHandle;
+        GLPtr<GrGLGetTextureSamplerHandleProc> fGetTextureSamplerHandle;
+        GLPtr<GrGLMakeTextureHandleResidentProc> fMakeTextureHandleResident;
+        GLPtr<GrGLMakeTextureHandleNonResidentProc> fMakeTextureHandleNonResident;
+        GLPtr<GrGLGetImageHandleProc> fGetImageHandle;
+        GLPtr<GrGLMakeImageHandleResidentProc> fMakeImageHandleResident;
+        GLPtr<GrGLMakeImageHandleNonResidentProc> fMakeImageHandleNonResident;
+        GLPtr<GrGLIsTextureHandleResidentProc> fIsTextureHandleResident;
+        GLPtr<GrGLIsImageHandleResidentProc> fIsImageHandleResident;
+        GLPtr<GrGLUniformHandleui64Proc> fUniformHandleui64;
+        GLPtr<GrGLUniformHandleui64vProc> fUniformHandleui64v;
+        GLPtr<GrGLProgramUniformHandleui64Proc> fProgramUniformHandleui64;
+        GLPtr<GrGLProgramUniformHandleui64vProc> fProgramUniformHandleui64v;
+
+        /* EXT_direct_state_access */
+        // We use the EXT verson because it is more expansive and interacts with more extensions
+        // than the ARB or core (4.5) versions. We may switch and/or omit methods in the future.
+        GLPtr<GrGLTextureParameteriProc> fTextureParameteri;
+        GLPtr<GrGLTextureParameterivProc> fTextureParameteriv;
+        GLPtr<GrGLTextureParameterfProc> fTextureParameterf;
+        GLPtr<GrGLTextureParameterfvProc> fTextureParameterfv;
+        GLPtr<GrGLTextureImage1DProc> fTextureImage1D;
+        GLPtr<GrGLTextureImage2DProc> fTextureImage2D;
+        GLPtr<GrGLTextureSubImage1DProc> fTextureSubImage1D;
+        GLPtr<GrGLTextureSubImage2DProc> fTextureSubImage2D;
+        GLPtr<GrGLCopyTextureImage1DProc> fCopyTextureImage1D;
+        GLPtr<GrGLCopyTextureImage2DProc> fCopyTextureImage2D;
+        GLPtr<GrGLCopyTextureSubImage1DProc> fCopyTextureSubImage1D;
+        GLPtr<GrGLCopyTextureSubImage2DProc> fCopyTextureSubImage2D;
+        GLPtr<GrGLGetTextureImageProc> fGetTextureImage;
+        GLPtr<GrGLGetTextureParameterfvProc> fGetTextureParameterfv;
+        GLPtr<GrGLGetTextureParameterivProc> fGetTextureParameteriv;
+        GLPtr<GrGLGetTextureLevelParameterfvProc> fGetTextureLevelParameterfv;
+        GLPtr<GrGLGetTextureLevelParameterivProc> fGetTextureLevelParameteriv;
+        // OpenGL 1.2
+        GLPtr<GrGLTextureImage3DProc> fTextureImage3D;
+        GLPtr<GrGLTextureSubImage3DProc> fTextureSubImage3D;
+        GLPtr<GrGLCopyTextureSubImage3DProc> fCopyTextureSubImage3D;
+        GLPtr<GrGLCompressedTextureImage3DProc> fCompressedTextureImage3D;
+        GLPtr<GrGLCompressedTextureImage2DProc> fCompressedTextureImage2D;
+        GLPtr<GrGLCompressedTextureImage1DProc> fCompressedTextureImage1D;
+        GLPtr<GrGLCompressedTextureSubImage3DProc> fCompressedTextureSubImage3D;
+        GLPtr<GrGLCompressedTextureSubImage2DProc> fCompressedTextureSubImage2D;
+        GLPtr<GrGLCompressedTextureSubImage1DProc> fCompressedTextureSubImage1D;
+        GLPtr<GrGLGetCompressedTextureImageProc> fGetCompressedTextureImage;
+        // OpenGL 1.5
+        GLPtr<GrGLNamedBufferDataProc> fNamedBufferData;
+        GLPtr<GrGLNamedBufferSubDataProc> fNamedBufferSubData;
+        GLPtr<GrGLMapNamedBufferProc> fMapNamedBuffer;
+        GLPtr<GrGLUnmapNamedBufferProc> fUnmapNamedBuffer;
+        GLPtr<GrGLGetNamedBufferParameterivProc> fGetNamedBufferParameteriv;
+        GLPtr<GrGLGetNamedBufferPointervProc> fGetNamedBufferPointerv;
+        GLPtr<GrGLGetNamedBufferSubDataProc> fGetNamedBufferSubData;
+        // OpenGL 2.0
+        GLPtr<GrGLProgramUniform1fProc> fProgramUniform1f;
+        GLPtr<GrGLProgramUniform2fProc> fProgramUniform2f;
+        GLPtr<GrGLProgramUniform3fProc> fProgramUniform3f;
+        GLPtr<GrGLProgramUniform4fProc> fProgramUniform4f;
+        GLPtr<GrGLProgramUniform1iProc> fProgramUniform1i;
+        GLPtr<GrGLProgramUniform2iProc> fProgramUniform2i;
+        GLPtr<GrGLProgramUniform3iProc> fProgramUniform3i;
+        GLPtr<GrGLProgramUniform4iProc> fProgramUniform4i;
+        GLPtr<GrGLProgramUniform1fvProc> fProgramUniform1fv;
+        GLPtr<GrGLProgramUniform2fvProc> fProgramUniform2fv;
+        GLPtr<GrGLProgramUniform3fvProc> fProgramUniform3fv;
+        GLPtr<GrGLProgramUniform4fvProc> fProgramUniform4fv;
+        GLPtr<GrGLProgramUniform1ivProc> fProgramUniform1iv;
+        GLPtr<GrGLProgramUniform2ivProc> fProgramUniform2iv;
+        GLPtr<GrGLProgramUniform3ivProc> fProgramUniform3iv;
+        GLPtr<GrGLProgramUniform4ivProc> fProgramUniform4iv;
+        GLPtr<GrGLProgramUniformMatrix2fvProc> fProgramUniformMatrix2fv;
+        GLPtr<GrGLProgramUniformMatrix3fvProc> fProgramUniformMatrix3fv;
+        GLPtr<GrGLProgramUniformMatrix4fvProc> fProgramUniformMatrix4fv;
+        // OpenGL 2.1
+        GLPtr<GrGLProgramUniformMatrix2x3fvProc> fProgramUniformMatrix2x3fv;
+        GLPtr<GrGLProgramUniformMatrix3x2fvProc> fProgramUniformMatrix3x2fv;
+        GLPtr<GrGLProgramUniformMatrix2x4fvProc> fProgramUniformMatrix2x4fv;
+        GLPtr<GrGLProgramUniformMatrix4x2fvProc> fProgramUniformMatrix4x2fv;
+        GLPtr<GrGLProgramUniformMatrix3x4fvProc> fProgramUniformMatrix3x4fv;
+        GLPtr<GrGLProgramUniformMatrix4x3fvProc> fProgramUniformMatrix4x3fv;
+        // OpenGL 3.0
+        GLPtr<GrGLNamedRenderbufferStorageProc> fNamedRenderbufferStorage;
+        GLPtr<GrGLGetNamedRenderbufferParameterivProc> fGetNamedRenderbufferParameteriv;
+        GLPtr<GrGLNamedRenderbufferStorageMultisampleProc> fNamedRenderbufferStorageMultisample;
+        GLPtr<GrGLCheckNamedFramebufferStatusProc> fCheckNamedFramebufferStatus;
+        GLPtr<GrGLNamedFramebufferTexture1DProc> fNamedFramebufferTexture1D;
+        GLPtr<GrGLNamedFramebufferTexture2DProc> fNamedFramebufferTexture2D;
+        GLPtr<GrGLNamedFramebufferTexture3DProc> fNamedFramebufferTexture3D;
+        GLPtr<GrGLNamedFramebufferRenderbufferProc> fNamedFramebufferRenderbuffer;
+        GLPtr<GrGLGetNamedFramebufferAttachmentParameterivProc> fGetNamedFramebufferAttachmentParameteriv;
+        GLPtr<GrGLGenerateTextureMipmapProc> fGenerateTextureMipmap;
+        GLPtr<GrGLFramebufferDrawBufferProc> fFramebufferDrawBuffer;
+        GLPtr<GrGLFramebufferDrawBuffersProc> fFramebufferDrawBuffers;
+        GLPtr<GrGLFramebufferReadBufferProc> fFramebufferReadBuffer;
+        GLPtr<GrGLGetFramebufferParameterivProc> fGetFramebufferParameteriv;
+        GLPtr<GrGLNamedCopyBufferSubDataProc> fNamedCopyBufferSubData;
+        GLPtr<GrGLVertexArrayVertexOffsetProc> fVertexArrayVertexOffset;
+        GLPtr<GrGLVertexArrayColorOffsetProc> fVertexArrayColorOffset;
+        GLPtr<GrGLVertexArrayEdgeFlagOffsetProc> fVertexArrayEdgeFlagOffset;
+        GLPtr<GrGLVertexArrayIndexOffsetProc> fVertexArrayIndexOffset;
+        GLPtr<GrGLVertexArrayNormalOffsetProc> fVertexArrayNormalOffset;
+        GLPtr<GrGLVertexArrayTexCoordOffsetProc> fVertexArrayTexCoordOffset;
+        GLPtr<GrGLVertexArrayMultiTexCoordOffsetProc> fVertexArrayMultiTexCoordOffset;
+        GLPtr<GrGLVertexArrayFogCoordOffsetProc> fVertexArrayFogCoordOffset;
+        GLPtr<GrGLVertexArraySecondaryColorOffsetProc> fVertexArraySecondaryColorOffset;
+        GLPtr<GrGLVertexArrayVertexAttribOffsetProc> fVertexArrayVertexAttribOffset;
+        GLPtr<GrGLVertexArrayVertexAttribIOffsetProc> fVertexArrayVertexAttribIOffset;
+        GLPtr<GrGLEnableVertexArrayProc> fEnableVertexArray;
+        GLPtr<GrGLDisableVertexArrayProc> fDisableVertexArray;
+        GLPtr<GrGLEnableVertexArrayAttribProc> fEnableVertexArrayAttrib;
+        GLPtr<GrGLDisableVertexArrayAttribProc> fDisableVertexArrayAttrib;
+        GLPtr<GrGLGetVertexArrayIntegervProc> fGetVertexArrayIntegerv;
+        GLPtr<GrGLGetVertexArrayPointervProc> fGetVertexArrayPointerv;
+        GLPtr<GrGLGetVertexArrayIntegeri_vProc> fGetVertexArrayIntegeri_v;
+        GLPtr<GrGLGetVertexArrayPointeri_vProc> fGetVertexArrayPointeri_v;
+        GLPtr<GrGLMapNamedBufferRangeProc> fMapNamedBufferRange;
+        GLPtr<GrGLFlushMappedNamedBufferRangeProc> fFlushMappedNamedBufferRange;
+
+        /* KHR_debug */
+        GLPtr<GrGLDebugMessageControlProc> fDebugMessageControl;
+        GLPtr<GrGLDebugMessageInsertProc> fDebugMessageInsert;
+        GLPtr<GrGLDebugMessageCallbackProc> fDebugMessageCallback;
+        GLPtr<GrGLGetDebugMessageLogProc> fGetDebugMessageLog;
+        GLPtr<GrGLPushDebugGroupProc> fPushDebugGroup;
+        GLPtr<GrGLPopDebugGroupProc> fPopDebugGroup;
+        GLPtr<GrGLObjectLabelProc> fObjectLabel;
     } fFunctions;
 
     // Per-GL func callback
diff --git a/src/gpu/gl/GrGLAssembleInterface.cpp b/src/gpu/gl/GrGLAssembleInterface.cpp
index af5b336b9f..6296f6ec3d 100644
--- a/src/gpu/gl/GrGLAssembleInterface.cpp
+++ b/src/gpu/gl/GrGLAssembleInterface.cpp
@@ -153,10 +153,6 @@ const GrGLInterface* GrGLAssembleGLInterface(void* ctx, GrGLGetProc get) {
     GET_PROC(LineWidth);
     GET_PROC(LinkProgram);
     GET_PROC(MapBuffer);
-    if (extensions.has("GL_EXT_direct_state_access")) {
-        GET_PROC_SUFFIX(MatrixLoadf, EXT);
-        GET_PROC_SUFFIX(MatrixLoadIdentity, EXT);
-    }
     GET_PROC(PixelStorei);
     if (extensions.has("GL_EXT_raster_multisample")) {
         GET_PROC_SUFFIX(RasterSamples, EXT);
@@ -273,6 +269,8 @@ const GrGLInterface* GrGLAssembleGLInterface(void* ctx, GrGLGetProc get) {
     }
 
     if (extensions.has("GL_NV_path_rendering")) {
+        GET_PROC_SUFFIX(MatrixLoadf, EXT);
+        GET_PROC_SUFFIX(MatrixLoadIdentity, EXT);
         GET_PROC_SUFFIX(PathCommands, NV);
         GET_PROC_SUFFIX(PathCoords, NV);
         GET_PROC_SUFFIX(PathParameteri, NV);
@@ -323,6 +321,150 @@ const GrGLInterface* GrGLAssembleGLInterface(void* ctx, GrGLGetProc get) {
         GET_PROC(GetProgramResourceLocation);
     }
 
+    if (glVer >= GR_GL_VER(3,1) || extensions.has("GL_ARB_draw_instanced")) {
+        GET_PROC(DrawArraysInstanced);
+        GET_PROC(DrawElementsInstanced);
+    }
+
+    if (glVer >= GR_GL_VER(3,2) || extensions.has("GL_ARB_instanced_arrays")) {
+        GET_PROC(VertexAttribDivisor);
+    }
+
+    if (extensions.has("GL_NV_bindless_texture")) {
+        GET_PROC_SUFFIX(GetTextureHandle, NV);
+        GET_PROC_SUFFIX(GetTextureSamplerHandle, NV);
+        GET_PROC_SUFFIX(MakeTextureHandleResident, NV);
+        GET_PROC_SUFFIX(MakeTextureHandleNonResident, NV);
+        GET_PROC_SUFFIX(GetImageHandle, NV);
+        GET_PROC_SUFFIX(MakeImageHandleResident, NV);
+        GET_PROC_SUFFIX(MakeImageHandleNonResident, NV);
+        GET_PROC_SUFFIX(IsTextureHandleResident, NV);
+        GET_PROC_SUFFIX(IsImageHandleResident, NV);
+        GET_PROC_SUFFIX(UniformHandleui64, NV);
+        GET_PROC_SUFFIX(UniformHandleui64v, NV);
+        GET_PROC_SUFFIX(ProgramUniformHandleui64, NV);
+        GET_PROC_SUFFIX(ProgramUniformHandleui64v, NV);
+    }
+
+    if (extensions.has("GL_EXT_direct_state_access")) {
+        GET_PROC_SUFFIX(TextureParameteri, EXT);
+        GET_PROC_SUFFIX(TextureParameteriv, EXT);
+        GET_PROC_SUFFIX(TextureParameterf, EXT);
+        GET_PROC_SUFFIX(TextureParameterfv, EXT);
+        GET_PROC_SUFFIX(TextureImage1D, EXT);
+        GET_PROC_SUFFIX(TextureImage2D, EXT);
+        GET_PROC_SUFFIX(TextureSubImage1D, EXT);
+        GET_PROC_SUFFIX(TextureSubImage2D, EXT);
+        GET_PROC_SUFFIX(CopyTextureImage1D, EXT);
+        GET_PROC_SUFFIX(CopyTextureImage2D, EXT);
+        GET_PROC_SUFFIX(CopyTextureSubImage1D, EXT);
+        GET_PROC_SUFFIX(CopyTextureSubImage2D, EXT);
+        GET_PROC_SUFFIX(GetTextureImage, EXT);
+        GET_PROC_SUFFIX(GetTextureParameterfv, EXT);
+        GET_PROC_SUFFIX(GetTextureParameteriv, EXT);
+        GET_PROC_SUFFIX(GetTextureLevelParameterfv, EXT);
+        GET_PROC_SUFFIX(GetTextureLevelParameteriv, EXT);
+        if (glVer >= GR_GL_VER(1,2)) {
+            GET_PROC_SUFFIX(TextureImage3D, EXT);
+            GET_PROC_SUFFIX(TextureSubImage3D, EXT);
+            GET_PROC_SUFFIX(CopyTextureSubImage3D, EXT);
+            GET_PROC_SUFFIX(CompressedTextureImage3D, EXT);
+            GET_PROC_SUFFIX(CompressedTextureImage2D, EXT);
+            GET_PROC_SUFFIX(CompressedTextureImage1D, EXT);
+            GET_PROC_SUFFIX(CompressedTextureSubImage3D, EXT);
+            GET_PROC_SUFFIX(CompressedTextureSubImage2D, EXT);
+            GET_PROC_SUFFIX(CompressedTextureSubImage1D, EXT);
+            GET_PROC_SUFFIX(GetCompressedTextureImage, EXT);
+        }
+        if (glVer >= GR_GL_VER(1,5)) {
+            GET_PROC_SUFFIX(NamedBufferData, EXT);
+            GET_PROC_SUFFIX(NamedBufferSubData, EXT);
+            GET_PROC_SUFFIX(MapNamedBuffer, EXT);
+            GET_PROC_SUFFIX(UnmapNamedBuffer, EXT);
+            GET_PROC_SUFFIX(GetNamedBufferParameteriv, EXT);
+            GET_PROC_SUFFIX(GetNamedBufferPointerv, EXT);
+            GET_PROC_SUFFIX(GetNamedBufferSubData, EXT);
+        }
+        if (glVer >= GR_GL_VER(2,0)) {
+            GET_PROC_SUFFIX(ProgramUniform1f, EXT);
+            GET_PROC_SUFFIX(ProgramUniform2f, EXT);
+            GET_PROC_SUFFIX(ProgramUniform3f, EXT);
+            GET_PROC_SUFFIX(ProgramUniform4f, EXT);
+            GET_PROC_SUFFIX(ProgramUniform1i, EXT);
+            GET_PROC_SUFFIX(ProgramUniform2i, EXT);
+            GET_PROC_SUFFIX(ProgramUniform3i, EXT);
+            GET_PROC_SUFFIX(ProgramUniform4i, EXT);
+            GET_PROC_SUFFIX(ProgramUniform1fv, EXT);
+            GET_PROC_SUFFIX(ProgramUniform2fv, EXT);
+            GET_PROC_SUFFIX(ProgramUniform3fv, EXT);
+            GET_PROC_SUFFIX(ProgramUniform4fv, EXT);
+            GET_PROC_SUFFIX(ProgramUniform1iv, EXT);
+            GET_PROC_SUFFIX(ProgramUniform2iv, EXT);
+            GET_PROC_SUFFIX(ProgramUniform3iv, EXT);
+            GET_PROC_SUFFIX(ProgramUniform4iv, EXT);
+            GET_PROC_SUFFIX(ProgramUniformMatrix2fv, EXT);
+            GET_PROC_SUFFIX(ProgramUniformMatrix3fv, EXT);
+            GET_PROC_SUFFIX(ProgramUniformMatrix4fv, EXT);
+        }
+        if (glVer >= GR_GL_VER(2,1)) {
+            GET_PROC_SUFFIX(ProgramUniformMatrix2x3fv, EXT);
+            GET_PROC_SUFFIX(ProgramUniformMatrix3x2fv, EXT);
+            GET_PROC_SUFFIX(ProgramUniformMatrix2x4fv, EXT);
+            GET_PROC_SUFFIX(ProgramUniformMatrix4x2fv, EXT);
+            GET_PROC_SUFFIX(ProgramUniformMatrix3x4fv, EXT);
+            GET_PROC_SUFFIX(ProgramUniformMatrix4x3fv, EXT);
+        }
+        if (glVer >= GR_GL_VER(3,0)) {
+            GET_PROC_SUFFIX(NamedRenderbufferStorage, EXT);
+            GET_PROC_SUFFIX(GetNamedRenderbufferParameteriv, EXT);
+            GET_PROC_SUFFIX(NamedRenderbufferStorageMultisample, EXT);
+            GET_PROC_SUFFIX(CheckNamedFramebufferStatus, EXT);
+            GET_PROC_SUFFIX(NamedFramebufferTexture1D, EXT);
+            GET_PROC_SUFFIX(NamedFramebufferTexture2D, EXT);
+            GET_PROC_SUFFIX(NamedFramebufferTexture3D, EXT);
+            GET_PROC_SUFFIX(NamedFramebufferRenderbuffer, EXT);
+            GET_PROC_SUFFIX(GetNamedFramebufferAttachmentParameteriv, EXT);
+            GET_PROC_SUFFIX(GenerateTextureMipmap, EXT);
+            GET_PROC_SUFFIX(FramebufferDrawBuffer, EXT);
+            GET_PROC_SUFFIX(FramebufferDrawBuffers, EXT);
+            GET_PROC_SUFFIX(FramebufferReadBuffer, EXT);
+            GET_PROC_SUFFIX(GetFramebufferParameteriv, EXT);
+            GET_PROC_SUFFIX(NamedCopyBufferSubData, EXT);
+            GET_PROC_SUFFIX(VertexArrayVertexOffset, EXT);
+            GET_PROC_SUFFIX(VertexArrayColorOffset, EXT);
+            GET_PROC_SUFFIX(VertexArrayEdgeFlagOffset, EXT);
+            GET_PROC_SUFFIX(VertexArrayIndexOffset, EXT);
+            GET_PROC_SUFFIX(VertexArrayNormalOffset, EXT);
+            GET_PROC_SUFFIX(VertexArrayTexCoordOffset, EXT);
+            GET_PROC_SUFFIX(VertexArrayMultiTexCoordOffset, EXT);
+            GET_PROC_SUFFIX(VertexArrayFogCoordOffset, EXT);
+            GET_PROC_SUFFIX(VertexArraySecondaryColorOffset, EXT);
+            GET_PROC_SUFFIX(VertexArrayVertexAttribOffset, EXT);
+            GET_PROC_SUFFIX(VertexArrayVertexAttribIOffset, EXT);
+            GET_PROC_SUFFIX(EnableVertexArray, EXT);
+            GET_PROC_SUFFIX(DisableVertexArray, EXT);
+            GET_PROC_SUFFIX(EnableVertexArrayAttrib, EXT);
+            GET_PROC_SUFFIX(DisableVertexArrayAttrib, EXT);
+            GET_PROC_SUFFIX(GetVertexArrayIntegerv, EXT);
+            GET_PROC_SUFFIX(GetVertexArrayPointerv, EXT);
+            GET_PROC_SUFFIX(GetVertexArrayIntegeri_v, EXT);
+            GET_PROC_SUFFIX(GetVertexArrayPointeri_v, EXT);
+            GET_PROC_SUFFIX(MapNamedBufferRange, EXT);
+            GET_PROC_SUFFIX(FlushMappedNamedBufferRange, EXT);
+        }
+    }
+
+    if (glVer >= GR_GL_VER(4,3) || extensions.has("GL_KHR_debug")) {
+        // KHR_debug defines these methods to have no suffix in an OpenGL (not ES) context.
+        GET_PROC(DebugMessageControl);
+        GET_PROC(DebugMessageInsert);
+        GET_PROC(DebugMessageCallback);
+        GET_PROC(GetDebugMessageLog);
+        GET_PROC(PushDebugGroup);
+        GET_PROC(PopDebugGroup);
+        GET_PROC(ObjectLabel);
+    }
+
     interface->fStandard = kGL_GrGLStandard;
     interface->fExtensions.swap(&extensions);
 
@@ -566,6 +708,41 @@ const GrGLInterface* GrGLAssembleGLESInterface(void* ctx, GrGLGetProc get) {
         GET_PROC_SUFFIX(CoverageModulation, NV);
     }
 
+    if (version >= GR_GL_VER(3,0) || extensions.has("GL_EXT_draw_instanced")) {
+        GET_PROC(DrawArraysInstanced);
+        GET_PROC(DrawElementsInstanced);
+    }
+
+    if (version >= GR_GL_VER(3,0) || extensions.has("GL_EXT_instanced_arrays")) {
+        GET_PROC(VertexAttribDivisor);
+    }
+
+    if (extensions.has("GL_NV_bindless_texture")) {
+        GET_PROC_SUFFIX(GetTextureHandle, NV);
+        GET_PROC_SUFFIX(GetTextureSamplerHandle, NV);
+        GET_PROC_SUFFIX(MakeTextureHandleResident, NV);
+        GET_PROC_SUFFIX(MakeTextureHandleNonResident, NV);
+        GET_PROC_SUFFIX(GetImageHandle, NV);
+        GET_PROC_SUFFIX(MakeImageHandleResident, NV);
+        GET_PROC_SUFFIX(MakeImageHandleNonResident, NV);
+        GET_PROC_SUFFIX(IsTextureHandleResident, NV);
+        GET_PROC_SUFFIX(IsImageHandleResident, NV);
+        GET_PROC_SUFFIX(UniformHandleui64, NV);
+        GET_PROC_SUFFIX(UniformHandleui64v, NV);
+        GET_PROC_SUFFIX(ProgramUniformHandleui64, NV);
+        GET_PROC_SUFFIX(ProgramUniformHandleui64v, NV);
+    }
+
+    if (extensions.has("GL_KHR_debug")) {
+        GET_PROC_SUFFIX(DebugMessageControl, KHR);
+        GET_PROC_SUFFIX(DebugMessageInsert, KHR);
+        GET_PROC_SUFFIX(DebugMessageCallback, KHR);
+        GET_PROC_SUFFIX(GetDebugMessageLog, KHR);
+        GET_PROC_SUFFIX(PushDebugGroup, KHR);
+        GET_PROC_SUFFIX(PopDebugGroup, KHR);
+        GET_PROC_SUFFIX(ObjectLabel, KHR);
+    }
+
     interface->fStandard = kGLES_GrGLStandard;
     interface->fExtensions.swap(&extensions);
 
diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp
index 91cf83147c..eacf6f6084 100644
--- a/src/gpu/gl/GrGLCaps.cpp
+++ b/src/gpu/gl/GrGLCaps.cpp
@@ -39,6 +39,9 @@ GrGLCaps::GrGLCaps(const GrContextOptions& contextOptions,
     fTwoFormatLimit = false;
     fFragCoordsConventionSupport = false;
     fVertexArrayObjectSupport = false;
+    fInstancedDrawingSupport = false;
+    fDirectStateAccessSupport = false;
+    fDebugSupport = false;
     fES2CompatibilitySupport = false;
     fMultisampleDisableSupport = false;
     fUseNonVBOVertexAndIndexDynamicData = false;
@@ -89,6 +92,8 @@ void GrGLCaps::init(const GrContextOptions& contextOptions,
         }
     }
 
+    glslCaps->fBindlessTextureSupport = ctxInfo.hasExtension("GL_NV_bindless_texture");
+
     // Adreno GPUs have a tendency to drop tiles when there is a divide-by-zero in a shader
     glslCaps->fDropsTileOnZeroDivide = kQualcomm_GrGLVendor == ctxInfo.vendor();
 
@@ -230,6 +235,28 @@ void GrGLCaps::init(const GrContextOptions& contextOptions,
                                     ctxInfo.hasExtension("GL_OES_vertex_array_object");
     }
 
+    if ((kGL_GrGLStandard == standard && version >= GR_GL_VER(3,2)) ||
+        (kGLES_GrGLStandard == standard && version >= GR_GL_VER(3,0))) {
+        fInstancedDrawingSupport = true;
+    } else {
+        fInstancedDrawingSupport = (ctxInfo.hasExtension("GL_ARB_draw_instanced") ||
+                                    ctxInfo.hasExtension("GL_EXT_draw_instanced")) &&
+                                   (ctxInfo.hasExtension("GL_ARB_instanced_arrays") ||
+                                    ctxInfo.hasExtension("GL_EXT_instanced_arrays"));
+    }
+
+    if (kGL_GrGLStandard == standard) {
+        fDirectStateAccessSupport = ctxInfo.hasExtension("GL_EXT_direct_state_access");
+    } else {
+        fDirectStateAccessSupport = false;
+    }
+
+    if (kGL_GrGLStandard == standard && version >= GR_GL_VER(4,3)) {
+        fDebugSupport = true;
+    } else {
+        fDebugSupport = ctxInfo.hasExtension("GL_KHR_debug");
+    }
+
     if (kGL_GrGLStandard == standard) {
         fES2CompatibilitySupport = ctxInfo.hasExtension("GL_ARB_ES2_compatibility");
     }
@@ -254,9 +281,7 @@ void GrGLCaps::init(const GrContextOptions& contextOptions,
             // We only support v1.3+ of GL_NV_path_rendering which allows us to
             // set individual fragment inputs with ProgramPathFragmentInputGen. The API
             // additions are detected by checking the existence of the function.
-            glslCaps->fPathRenderingSupport =
-                ctxInfo.hasExtension("GL_EXT_direct_state_access") &&
-                ((ctxInfo.version() >= GR_GL_VER(4, 3) ||
+            glslCaps->fPathRenderingSupport = ((ctxInfo.version() >= GR_GL_VER(4, 3) ||
                 ctxInfo.hasExtension("GL_ARB_program_interface_query")) &&
                 gli->fFunctions.fProgramPathFragmentInputGen);
         }
@@ -1023,6 +1048,9 @@ SkString GrGLCaps::dump() const {
     r.appendf("Fragment coord conventions support: %s\n",
              (fFragCoordsConventionSupport ? "YES": "NO"));
     r.appendf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ? "YES": "NO"));
+    r.appendf("Instanced drawing support: %s\n", (fInstancedDrawingSupport ? "YES": "NO"));
+    r.appendf("Direct state access support: %s\n", (fDirectStateAccessSupport ? "YES": "NO"));
+    r.appendf("Debug support: %s\n", (fDebugSupport ? "YES": "NO"));
     r.appendf("Multisample disable support: %s\n", (fMultisampleDisableSupport ? "YES" : "NO"));
     r.appendf("Use non-VBO for dynamic data: %s\n",
              (fUseNonVBOVertexAndIndexDynamicData ? "YES" : "NO"));
@@ -1039,6 +1067,7 @@ GrGLSLCaps::GrGLSLCaps(const GrContextOptions& options,
     fDropsTileOnZeroDivide = false;
     fFBFetchSupport = false;
     fFBFetchNeedsCustomOutput = false;
+    fBindlessTextureSupport = false;
     fAdvBlendEqInteraction = kNotSupported_AdvBlendEqInteraction;
     fFBFetchColorName = NULL;
     fFBFetchExtensionString = NULL;
@@ -1063,6 +1092,7 @@ SkString GrGLSLCaps::dump() const {
 
     r.appendf("FB Fetch Support: %s\n", (fFBFetchSupport ? "YES" : "NO"));
     r.appendf("Drops tile on zero divide: %s\n", (fDropsTileOnZeroDivide ? "YES" : "NO"));
+    r.appendf("Bindless texture support: %s\n", (fBindlessTextureSupport ? "YES" : "NO"));
     r.appendf("Advanced blend equation interaction: %s\n",
               kAdvBlendEqInteractionStr[fAdvBlendEqInteraction]);
     return r;
diff --git a/src/gpu/gl/GrGLCaps.h b/src/gpu/gl/GrGLCaps.h
index ac89115a7b..1f5d6c2650 100644
--- a/src/gpu/gl/GrGLCaps.h
+++ b/src/gpu/gl/GrGLCaps.h
@@ -224,6 +224,15 @@ public:
     /// Is there support for Vertex Array Objects?
     bool vertexArrayObjectSupport() const { return fVertexArrayObjectSupport; }
 
+    /// Is there support for glDraw*Instanced and glVertexAttribDivisor?
+    bool instancedDrawingSupport() const { return fInstancedDrawingSupport; }
+
+    /// Is there support for GL_EXT_direct_state_access?
+    bool directStateAccessSupport() const { return fDirectStateAccessSupport; }
+
+    /// Is there support for GL_KHR_debug?
+    bool debugSupport() const { return fDebugSupport; }
+
     /// Is there support for ES2 compatability?
     bool ES2CompatibilitySupport() const { return fES2CompatibilitySupport; }
 
@@ -350,6 +359,9 @@ private:
     bool fTwoFormatLimit : 1;
     bool fFragCoordsConventionSupport : 1;
     bool fVertexArrayObjectSupport : 1;
+    bool fInstancedDrawingSupport : 1;
+    bool fDirectStateAccessSupport : 1;
+    bool fDebugSupport : 1;
     bool fES2CompatibilitySupport : 1;
     bool fMultisampleDisableSupport : 1;
     bool fUseNonVBOVertexAndIndexDynamicData : 1;
@@ -405,6 +417,8 @@ public:
 
     bool fbFetchNeedsCustomOutput() const { return fFBFetchNeedsCustomOutput; }
 
+    bool bindlessTextureSupport() const { return fBindlessTextureSupport; }
+
     const char* fbFetchColorName() const { return fFBFetchColorName; }
 
     const char* fbFetchExtensionString() const { return fFBFetchExtensionString; }
@@ -441,6 +455,7 @@ private:
     bool fDropsTileOnZeroDivide : 1;
     bool fFBFetchSupport : 1;
     bool fFBFetchNeedsCustomOutput : 1;
+    bool fBindlessTextureSupport : 1;
 
     const char* fFBFetchColorName;
     const char* fFBFetchExtensionString;
diff --git a/src/gpu/gl/GrGLCreateNullInterface.cpp b/src/gpu/gl/GrGLCreateNullInterface.cpp
index 512c672a65..41d8f5ddd0 100644
--- a/src/gpu/gl/GrGLCreateNullInterface.cpp
+++ b/src/gpu/gl/GrGLCreateNullInterface.cpp
@@ -382,9 +382,11 @@ const GrGLInterface* GrGLCreateNullInterface() {
     functions->fDisable = noOpGLDisable;
     functions->fDisableVertexAttribArray = noOpGLDisableVertexAttribArray;
     functions->fDrawArrays = noOpGLDrawArrays;
+    functions->fDrawArraysInstanced = noOpGLDrawArraysInstanced;
     functions->fDrawBuffer = noOpGLDrawBuffer;
     functions->fDrawBuffers = noOpGLDrawBuffers;
     functions->fDrawElements = noOpGLDrawElements;
+    functions->fDrawElementsInstanced = noOpGLDrawElementsInstanced;
     functions->fEnable = noOpGLEnable;
     functions->fEnableVertexAttribArray = noOpGLEnableVertexAttribArray;
     functions->fEndQuery = noOpGLEndQuery;
@@ -464,6 +466,7 @@ const GrGLInterface* GrGLCreateNullInterface() {
     functions->fVertexAttrib3fv = noOpGLVertexAttrib3fv;
     functions->fVertexAttrib4fv = noOpGLVertexAttrib4fv;
     functions->fVertexAttribPointer = noOpGLVertexAttribPointer;
+    functions->fVertexAttribDivisor = noOpGLVertexAttribDivisor;
     functions->fViewport = nullGLViewport;
     functions->fBindFramebuffer = nullGLBindFramebuffer;
     functions->fBindRenderbuffer = nullGLBindRenderbuffer;
diff --git a/src/gpu/gl/GrGLDefines.h b/src/gpu/gl/GrGLDefines.h
index c08c582b71..cc588b93b7 100644
--- a/src/gpu/gl/GrGLDefines.h
+++ b/src/gpu/gl/GrGLDefines.h
@@ -889,4 +889,43 @@
 #define GR_GL_MULTISAMPLE_RASTERIZATION_ALLOWED             0x932B
 #define GR_GL_EFFECTIVE_RASTER_SAMPLES                      0x932C
 
+/* GL_KHR_debug */
+#define GR_GL_DEBUG_OUTPUT                                  0x92E0
+#define GR_GL_DEBUG_OUTPUT_SYNCHRONOUS                      0x8242
+#define GR_GL_CONTEXT_FLAG_DEBUG_BIT                        0x00000002
+#define GR_GL_MAX_DEBUG_MESSAGE_LENGTH                      0x9143
+#define GR_GL_MAX_DEBUG_LOGGED_MESSAGES                     0x9144
+#define GR_GL_DEBUG_LOGGED_MESSAGES                         0x9145
+#define GR_GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH              0x8243
+#define GR_GL_MAX_DEBUG_GROUP_STACK_DEPTH                   0x826C
+#define GR_GL_DEBUG_GROUP_STACK_DEPTH                       0x826D
+#define GR_GL_MAX_LABEL_LENGTH                              0x82E8
+#define GR_GL_DEBUG_SOURCE_API                              0x8246
+#define GR_GL_DEBUG_SOURCE_WINDOW_SYSTEM                    0x8247
+#define GR_GL_DEBUG_SOURCE_SHADER_COMPILER                  0x8248
+#define GR_GL_DEBUG_SOURCE_THIRD_PARTY                      0x8249
+#define GR_GL_DEBUG_SOURCE_APPLICATION                      0x824A
+#define GR_GL_DEBUG_SOURCE_OTHER                            0x824B
+#define GR_GL_DEBUG_TYPE_ERROR                              0x824C
+#define GR_GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR                0x824D
+#define GR_GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR                 0x824E
+#define GR_GL_DEBUG_TYPE_PORTABILITY                        0x824F
+#define GR_GL_DEBUG_TYPE_PERFORMANCE                        0x8250
+#define GR_GL_DEBUG_TYPE_OTHER                              0x8251
+#define GR_GL_DEBUG_TYPE_MARKER                             0x8268
+#define GR_GL_DEBUG_TYPE_PUSH_GROUP                         0x8269
+#define GR_GL_DEBUG_TYPE_POP_GROUP                          0x826A
+#define GR_GL_DEBUG_SEVERITY_HIGH                           0x9146
+#define GR_GL_DEBUG_SEVERITY_MEDIUM                         0x9147
+#define GR_GL_DEBUG_SEVERITY_LOW                            0x9148
+#define GR_GL_DEBUG_SEVERITY_NOTIFICATION                   0x826B
+#define GR_GL_STACK_UNDERFLOW                               0x0504
+#define GR_GL_STACK_OVERFLOW                                0x0503
+#define GR_GL_BUFFER                                        0x82E0
+#define GR_GL_SHADER                                        0x82E1
+#define GR_GL_PROGRAM                                       0x82E2
+#define GR_GL_QUERY                                         0x82E3
+#define GR_GL_PROGRAM_PIPELINE                              0x82E4
+#define GR_GL_SAMPLER                                       0x82E6
+
 #endif
diff --git a/src/gpu/gl/GrGLInterface.cpp b/src/gpu/gl/GrGLInterface.cpp
index 8bbd2f3b1b..29a092adae 100644
--- a/src/gpu/gl/GrGLInterface.cpp
+++ b/src/gpu/gl/GrGLInterface.cpp
@@ -466,14 +466,6 @@ bool GrGLInterface::validate() const {
         }
     }
 
-    if ((kGL_GrGLStandard == fStandard && fExtensions.has("GL_EXT_direct_state_access")) ||
-        (kGLES_GrGLStandard == fStandard && fExtensions.has("GL_NV_path_rendering"))) {
-        if (NULL == fFunctions.fMatrixLoadf ||
-            NULL == fFunctions.fMatrixLoadIdentity) {
-            RETURN_FALSE_INTERFACE
-        }
-    }
-
     if ((kGL_GrGLStandard == fStandard &&
          (glVer >= GR_GL_VER(4,3) || fExtensions.has("GL_ARB_program_interface_query"))) ||
         (kGLES_GrGLStandard == fStandard && glVer >= GR_GL_VER(3,1))) {
@@ -492,7 +484,9 @@ bool GrGLInterface::validate() const {
     }
 
     if (fExtensions.has("GL_NV_path_rendering")) {
-        if (NULL == fFunctions.fPathCommands ||
+        if (NULL == fFunctions.fMatrixLoadf ||
+            NULL == fFunctions.fMatrixLoadIdentity ||
+            NULL == fFunctions.fPathCommands ||
             NULL == fFunctions.fPathCoords ||
             NULL == fFunctions.fPathParameteri ||
             NULL == fFunctions.fPathParameterf ||
@@ -540,5 +534,175 @@ bool GrGLInterface::validate() const {
         }
     }
 
+    if ((kGL_GrGLStandard == fStandard && glVer >= GR_GL_VER(3,1)) ||
+        (kGLES_GrGLStandard == fStandard && glVer >= GR_GL_VER(3,0)) ||
+        fExtensions.has("GL_ARB_draw_instanced") ||
+        fExtensions.has("GL_EXT_draw_instanced")) {
+        if (NULL == fFunctions.fDrawArraysInstanced ||
+            NULL == fFunctions.fDrawElementsInstanced) {
+            RETURN_FALSE_INTERFACE
+        }
+    }
+
+    if ((kGL_GrGLStandard == fStandard && glVer >= GR_GL_VER(3,2)) ||
+        (kGLES_GrGLStandard == fStandard && glVer >= GR_GL_VER(3,0)) ||
+        fExtensions.has("GL_ARB_instanced_arrays") ||
+        fExtensions.has("GL_EXT_instanced_arrays")) {
+        if (NULL == fFunctions.fVertexAttribDivisor) {
+            RETURN_FALSE_INTERFACE
+        }
+    }
+
+    if (fExtensions.has("GL_NV_bindless_texture")) {
+        if (NULL == fFunctions.fGetTextureHandle ||
+            NULL == fFunctions.fGetTextureSamplerHandle ||
+            NULL == fFunctions.fMakeTextureHandleResident ||
+            NULL == fFunctions.fMakeTextureHandleNonResident ||
+            NULL == fFunctions.fGetImageHandle ||
+            NULL == fFunctions.fMakeImageHandleResident ||
+            NULL == fFunctions.fMakeImageHandleNonResident ||
+            NULL == fFunctions.fIsTextureHandleResident ||
+            NULL == fFunctions.fIsImageHandleResident ||
+            NULL == fFunctions.fUniformHandleui64 ||
+            NULL == fFunctions.fUniformHandleui64v ||
+            NULL == fFunctions.fProgramUniformHandleui64 ||
+            NULL == fFunctions.fProgramUniformHandleui64v) {
+            RETURN_FALSE_INTERFACE
+        }
+    }
+
+    if (kGL_GrGLStandard == fStandard && fExtensions.has("GL_EXT_direct_state_access")) {
+        if (NULL == fFunctions.fTextureParameteri ||
+            NULL == fFunctions.fTextureParameteriv ||
+            NULL == fFunctions.fTextureParameterf ||
+            NULL == fFunctions.fTextureParameterfv ||
+            NULL == fFunctions.fTextureImage1D ||
+            NULL == fFunctions.fTextureImage2D ||
+            NULL == fFunctions.fTextureSubImage1D ||
+            NULL == fFunctions.fTextureSubImage2D ||
+            NULL == fFunctions.fCopyTextureImage1D ||
+            NULL == fFunctions.fCopyTextureImage2D ||
+            NULL == fFunctions.fCopyTextureSubImage1D ||
+            NULL == fFunctions.fCopyTextureSubImage2D ||
+            NULL == fFunctions.fGetTextureImage ||
+            NULL == fFunctions.fGetTextureParameterfv ||
+            NULL == fFunctions.fGetTextureParameteriv ||
+            NULL == fFunctions.fGetTextureLevelParameterfv ||
+            NULL == fFunctions.fGetTextureLevelParameteriv) {
+            RETURN_FALSE_INTERFACE
+        }
+        if (glVer >= GR_GL_VER(1,2)) {
+            if (NULL == fFunctions.fTextureImage3D ||
+                NULL == fFunctions.fTextureSubImage3D ||
+                NULL == fFunctions.fCopyTextureSubImage3D ||
+                NULL == fFunctions.fCompressedTextureImage3D ||
+                NULL == fFunctions.fCompressedTextureImage2D ||
+                NULL == fFunctions.fCompressedTextureImage1D ||
+                NULL == fFunctions.fCompressedTextureSubImage3D ||
+                NULL == fFunctions.fCompressedTextureSubImage2D ||
+                NULL == fFunctions.fCompressedTextureSubImage1D ||
+                NULL == fFunctions.fGetCompressedTextureImage) {
+                RETURN_FALSE_INTERFACE
+            }
+        }
+        if (glVer >= GR_GL_VER(1,5)) {
+            if (NULL == fFunctions.fNamedBufferData ||
+                NULL == fFunctions.fNamedBufferSubData ||
+                NULL == fFunctions.fMapNamedBuffer ||
+                NULL == fFunctions.fUnmapNamedBuffer ||
+                NULL == fFunctions.fGetNamedBufferParameteriv ||
+                NULL == fFunctions.fGetNamedBufferPointerv ||
+                NULL == fFunctions.fGetNamedBufferSubData) {
+                RETURN_FALSE_INTERFACE
+            }
+        }
+        if (glVer >= GR_GL_VER(2,0)) {
+            if (NULL == fFunctions.fProgramUniform1f ||
+                NULL == fFunctions.fProgramUniform2f ||
+                NULL == fFunctions.fProgramUniform3f ||
+                NULL == fFunctions.fProgramUniform4f ||
+                NULL == fFunctions.fProgramUniform1i ||
+                NULL == fFunctions.fProgramUniform2i ||
+                NULL == fFunctions.fProgramUniform3i ||
+                NULL == fFunctions.fProgramUniform4i ||
+                NULL == fFunctions.fProgramUniform1fv ||
+                NULL == fFunctions.fProgramUniform2fv ||
+                NULL == fFunctions.fProgramUniform3fv ||
+                NULL == fFunctions.fProgramUniform4fv ||
+                NULL == fFunctions.fProgramUniform1iv ||
+                NULL == fFunctions.fProgramUniform2iv ||
+                NULL == fFunctions.fProgramUniform3iv ||
+                NULL == fFunctions.fProgramUniform4iv ||
+                NULL == fFunctions.fProgramUniformMatrix2fv ||
+                NULL == fFunctions.fProgramUniformMatrix3fv ||
+                NULL == fFunctions.fProgramUniformMatrix4fv) {
+                RETURN_FALSE_INTERFACE
+            }
+        }
+        if (glVer >= GR_GL_VER(2,1)) {
+            if (NULL == fFunctions.fProgramUniformMatrix2x3fv ||
+                NULL == fFunctions.fProgramUniformMatrix3x2fv ||
+                NULL == fFunctions.fProgramUniformMatrix2x4fv ||
+                NULL == fFunctions.fProgramUniformMatrix4x2fv ||
+                NULL == fFunctions.fProgramUniformMatrix3x4fv ||
+                NULL == fFunctions.fProgramUniformMatrix4x3fv) {
+                RETURN_FALSE_INTERFACE
+            }
+        }
+        if (glVer >= GR_GL_VER(3,0)) {
+            if (NULL == fFunctions.fNamedRenderbufferStorage ||
+                NULL == fFunctions.fGetNamedRenderbufferParameteriv ||
+                NULL == fFunctions.fNamedRenderbufferStorageMultisample ||
+                NULL == fFunctions.fCheckNamedFramebufferStatus ||
+                NULL == fFunctions.fNamedFramebufferTexture1D ||
+                NULL == fFunctions.fNamedFramebufferTexture2D ||
+                NULL == fFunctions.fNamedFramebufferTexture3D ||
+                NULL == fFunctions.fNamedFramebufferRenderbuffer ||
+                NULL == fFunctions.fGetNamedFramebufferAttachmentParameteriv ||
+                NULL == fFunctions.fGenerateTextureMipmap ||
+                NULL == fFunctions.fFramebufferDrawBuffer ||
+                NULL == fFunctions.fFramebufferDrawBuffers ||
+                NULL == fFunctions.fFramebufferReadBuffer ||
+                NULL == fFunctions.fGetFramebufferParameteriv ||
+                NULL == fFunctions.fNamedCopyBufferSubData ||
+                NULL == fFunctions.fVertexArrayVertexOffset ||
+                NULL == fFunctions.fVertexArrayColorOffset ||
+                NULL == fFunctions.fVertexArrayEdgeFlagOffset ||
+                NULL == fFunctions.fVertexArrayIndexOffset ||
+                NULL == fFunctions.fVertexArrayNormalOffset ||
+                NULL == fFunctions.fVertexArrayTexCoordOffset ||
+                NULL == fFunctions.fVertexArrayMultiTexCoordOffset ||
+                NULL == fFunctions.fVertexArrayFogCoordOffset ||
+                NULL == fFunctions.fVertexArraySecondaryColorOffset ||
+                NULL == fFunctions.fVertexArrayVertexAttribOffset ||
+                NULL == fFunctions.fVertexArrayVertexAttribIOffset ||
+                NULL == fFunctions.fEnableVertexArray ||
+                NULL == fFunctions.fDisableVertexArray ||
+                NULL == fFunctions.fEnableVertexArrayAttrib ||
+                NULL == fFunctions.fDisableVertexArrayAttrib ||
+                NULL == fFunctions.fGetVertexArrayIntegerv ||
+                NULL == fFunctions.fGetVertexArrayPointerv ||
+                NULL == fFunctions.fGetVertexArrayIntegeri_v ||
+                NULL == fFunctions.fGetVertexArrayPointeri_v ||
+                NULL == fFunctions.fMapNamedBufferRange ||
+                NULL == fFunctions.fFlushMappedNamedBufferRange) {
+                RETURN_FALSE_INTERFACE
+            }
+        }
+    }
+
+    if ((kGL_GrGLStandard == fStandard && glVer >= GR_GL_VER(4,3)) ||
+        fExtensions.has("GL_KHR_debug")) {
+        if (NULL == fFunctions.fDebugMessageControl ||
+            NULL == fFunctions.fDebugMessageInsert ||
+            NULL == fFunctions.fDebugMessageCallback ||
+            NULL == fFunctions.fGetDebugMessageLog ||
+            NULL == fFunctions.fPushDebugGroup ||
+            NULL == fFunctions.fPopDebugGroup ||
+            NULL == fFunctions.fObjectLabel) {
+            RETURN_FALSE_INTERFACE
+        }
+    }
+
     return true;
 }
diff --git a/src/gpu/gl/GrGLNoOpInterface.cpp b/src/gpu/gl/GrGLNoOpInterface.cpp
index f588046455..396eaa46ea 100644
--- a/src/gpu/gl/GrGLNoOpInterface.cpp
+++ b/src/gpu/gl/GrGLNoOpInterface.cpp
@@ -140,6 +140,12 @@ GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawArrays(GrGLenum mode,
                                               GrGLsizei count) {
 }
 
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawArraysInstanced(GrGLenum mode,
+                                                       GrGLint first,
+                                                       GrGLsizei count,
+                                                       GrGLsizei primcount) {
+}
+
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawBuffer(GrGLenum mode) {
 }
 
@@ -153,6 +159,13 @@ GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawElements(GrGLenum mode,
                                                 const GrGLvoid* indices) {
 }
 
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawElementsInstanced(GrGLenum mode,
+                                                         GrGLsizei count,
+                                                         GrGLenum type,
+                                                         const GrGLvoid* indices,
+                                                         GrGLsizei primcount) {
+}
+
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLEnable(GrGLenum cap) {
 }
 
@@ -389,6 +402,9 @@ GrGLvoid GR_GL_FUNCTION_TYPE noOpGLVertexAttribPointer(GrGLuint indx,
                                                        const GrGLvoid* ptr) {
 }
 
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLVertexAttribDivisor(GrGLuint index, GrGLuint divisor) {
+}
+
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLViewport(GrGLint x,
                                             GrGLint y,
                                             GrGLsizei width,
diff --git a/src/gpu/gl/GrGLNoOpInterface.h b/src/gpu/gl/GrGLNoOpInterface.h
index b803b46097..d90a9b17e3 100644
--- a/src/gpu/gl/GrGLNoOpInterface.h
+++ b/src/gpu/gl/GrGLNoOpInterface.h
@@ -86,6 +86,11 @@ GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDisableVertexAttribArray(GrGLuint index);
 
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawArrays(GrGLenum mode, GrGLint first, GrGLsizei count);
 
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawArraysInstanced(GrGLenum mode,
+                                                       GrGLint first,
+                                                       GrGLsizei count,
+                                                       GrGLsizei primcount);
+
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawBuffer(GrGLenum mode);
 
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawBuffers(GrGLsizei n,
@@ -96,6 +101,12 @@ GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawElements(GrGLenum mode,
                                                 GrGLenum type,
                                                 const GrGLvoid* indices);
 
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawElementsInstanced(GrGLenum mode,
+                                                         GrGLsizei count,
+                                                         GrGLenum type,
+                                                         const GrGLvoid* indices,
+                                                         GrGLsizei primcount);
+
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLEnable(GrGLenum cap);
 
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLEnableVertexAttribArray(GrGLuint index);
@@ -283,6 +294,8 @@ GrGLvoid GR_GL_FUNCTION_TYPE noOpGLVertexAttribPointer(GrGLuint indx,
                                                        GrGLsizei stride,
                                                        const GrGLvoid* ptr);
 
+GrGLvoid GR_GL_FUNCTION_TYPE noOpGLVertexAttribDivisor(GrGLuint index, GrGLuint divisor);
+
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLViewport(GrGLint x,
                                             GrGLint y,
                                             GrGLsizei width,
diff --git a/src/gpu/gl/SkNullGLContext.cpp b/src/gpu/gl/SkNullGLContext.cpp
index cf07cb3ca2..7ced85e89e 100644
--- a/src/gpu/gl/SkNullGLContext.cpp
+++ b/src/gpu/gl/SkNullGLContext.cpp
@@ -385,9 +385,11 @@ static GrGLInterface* create_null_interface(State* state) {
     functions->fDisable = noOpGLDisable;
     functions->fDisableVertexAttribArray = noOpGLDisableVertexAttribArray;
     functions->fDrawArrays = noOpGLDrawArrays;
+    functions->fDrawArraysInstanced = noOpGLDrawArraysInstanced;
     functions->fDrawBuffer = noOpGLDrawBuffer;
     functions->fDrawBuffers = noOpGLDrawBuffers;
     functions->fDrawElements = noOpGLDrawElements;
+    functions->fDrawElementsInstanced = noOpGLDrawElementsInstanced;
     functions->fEnable = noOpGLEnable;
     functions->fEnableVertexAttribArray = noOpGLEnableVertexAttribArray;
     functions->fEndQuery = noOpGLEndQuery;
@@ -467,6 +469,7 @@ static GrGLInterface* create_null_interface(State* state) {
     functions->fVertexAttrib3fv = noOpGLVertexAttrib3fv;
     functions->fVertexAttrib4fv = noOpGLVertexAttrib4fv;
     functions->fVertexAttribPointer = noOpGLVertexAttribPointer;
+    functions->fVertexAttribDivisor = noOpGLVertexAttribDivisor;
     functions->fViewport = nullGLViewport;
     functions->fBindFramebuffer = nullGLBindFramebuffer;
     functions->fBindRenderbuffer = nullGLBindRenderbuffer;
diff --git a/src/gpu/gl/debug/GrGLCreateDebugInterface.cpp b/src/gpu/gl/debug/GrGLCreateDebugInterface.cpp
index e60c519be3..5c5e407c32 100644
--- a/src/gpu/gl/debug/GrGLCreateDebugInterface.cpp
+++ b/src/gpu/gl/debug/GrGLCreateDebugInterface.cpp
@@ -875,9 +875,11 @@ const GrGLInterface* GrGLCreateDebugInterface() {
     functions->fDisable = noOpGLDisable;
     functions->fDisableVertexAttribArray = noOpGLDisableVertexAttribArray;
     functions->fDrawArrays = noOpGLDrawArrays;
+    functions->fDrawArraysInstanced = noOpGLDrawArraysInstanced;
     functions->fDrawBuffer = noOpGLDrawBuffer;
     functions->fDrawBuffers = noOpGLDrawBuffers;
     functions->fDrawElements = noOpGLDrawElements;
+    functions->fDrawElementsInstanced = noOpGLDrawElementsInstanced;
     functions->fEnable = noOpGLEnable;
     functions->fEnableVertexAttribArray = noOpGLEnableVertexAttribArray;
     functions->fEndQuery = noOpGLEndQuery;
@@ -954,6 +956,7 @@ const GrGLInterface* GrGLCreateDebugInterface() {
     functions->fVertexAttrib3fv = noOpGLVertexAttrib3fv;
     functions->fVertexAttrib4fv = noOpGLVertexAttrib4fv;
     functions->fVertexAttribPointer = noOpGLVertexAttribPointer;
+    functions->fVertexAttribDivisor = noOpGLVertexAttribDivisor;
     functions->fViewport = noOpGLViewport;
     functions->fBindFramebuffer = debugGLBindFramebuffer;
     functions->fBindRenderbuffer = debugGLBindRenderbuffer;
diff --git a/tests/GrDrawTargetTest.cpp b/tests/GrDrawTargetTest.cpp
index 14d4f78314..6f3f31f17b 100644
--- a/tests/GrDrawTargetTest.cpp
+++ b/tests/GrDrawTargetTest.cpp
@@ -18,6 +18,8 @@ static void test_print(skiatest::Reporter*, const GrCaps* caps) {
     // This used to assert.
     SkString result = caps->dump();
     SkASSERT(!result.isEmpty());
+    SkString shaderResult = caps->shaderCaps()->dump();
+    SkASSERT(!shaderResult.isEmpty());
 }
 
 DEF_GPUTEST(GrDrawTarget, reporter, factory) {