1 
2 /*
3  * Copyright 2012 Google Inc.
4  *
5  * Use of this source code is governed by a BSD-style license that can be
6  * found in the LICENSE file.
7  */
8 
9 #ifndef GrGLFunctions_DEFINED
10 #define GrGLFunctions_DEFINED
11 
12 #include "GrGLConfig.h"
13 
14 ////////////////////////////////////////////////////////////////////////////////
15 
16 /**
17  * Classifies GL contexts by which standard they implement (currently as Desktop
18  * vs. ES).
19  */
20 enum GrGLStandard {
21     kNone_GrGLStandard,
22     kGL_GrGLStandard,
23     kGLES_GrGLStandard,
24 };
25 static const int kGrGLStandardCnt = 3;
26 
27 ///////////////////////////////////////////////////////////////////////////////
28 
29 /**
30  * Declares typedefs for all the GL functions used in GrGLInterface
31  */
32 
33 typedef unsigned int GrGLenum;
34 typedef unsigned char GrGLboolean;
35 typedef unsigned int GrGLbitfield;
36 typedef signed char GrGLbyte;
37 typedef char GrGLchar;
38 typedef short GrGLshort;
39 typedef int GrGLint;
40 typedef int GrGLsizei;
41 typedef int64_t GrGLint64;
42 typedef unsigned char GrGLubyte;
43 typedef unsigned short GrGLushort;
44 typedef unsigned int GrGLuint;
45 typedef uint64_t GrGLuint64;
46 typedef float GrGLfloat;
47 typedef float GrGLclampf;
48 typedef double GrGLdouble;
49 typedef double GrGLclampd;
50 typedef void GrGLvoid;
51 #ifndef SK_IGNORE_64BIT_OPENGL_CHANGES
52 #ifdef _WIN64
53 typedef signed long long int GrGLintptr;
54 typedef signed long long int GrGLsizeiptr;
55 #else
56 typedef signed long int GrGLintptr;
57 typedef signed long int GrGLsizeiptr;
58 #endif
59 #else
60 typedef signed long int GrGLintptr;
61 typedef signed long int GrGLsizeiptr;
62 #endif
63 
64 ///////////////////////////////////////////////////////////////////////////////
65 
66 extern "C" {
67     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLActiveTextureProc)(GrGLenum texture);
68     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLAttachShaderProc)(GrGLuint program, GrGLuint shader);
69     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBeginQueryProc)(GrGLenum target, GrGLuint id);
70     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindAttribLocationProc)(GrGLuint program, GrGLuint index, const char* name);
71     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindBufferProc)(GrGLenum target, GrGLuint buffer);
72     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindFramebufferProc)(GrGLenum target, GrGLuint framebuffer);
73     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindRenderbufferProc)(GrGLenum target, GrGLuint renderbuffer);
74     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindTextureProc)(GrGLenum target, GrGLuint texture);
75     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindFragDataLocationProc)(GrGLuint program, GrGLuint colorNumber, const GrGLchar* name);
76     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindFragDataLocationIndexedProc)(GrGLuint program, GrGLuint colorNumber, GrGLuint index, const GrGLchar * name);
77     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindVertexArrayProc)(GrGLuint array);
78     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlendBarrierProc)();
79     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlendColorProc)(GrGLclampf red, GrGLclampf green, GrGLclampf blue, GrGLclampf alpha);
80     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlendEquationProc)(GrGLenum mode);
81     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBlendFuncProc)(GrGLenum sfactor, GrGLenum dfactor);
82     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);
83     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBufferDataProc)(GrGLenum target, GrGLsizeiptr size, const GrGLvoid* data, GrGLenum usage);
84     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBufferSubDataProc)(GrGLenum target, GrGLintptr offset, GrGLsizeiptr size, const GrGLvoid* data);
85     typedef GrGLenum (GR_GL_FUNCTION_TYPE* GrGLCheckFramebufferStatusProc)(GrGLenum target);
86     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLClearProc)(GrGLbitfield mask);
87     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLClearColorProc)(GrGLclampf red, GrGLclampf green, GrGLclampf blue, GrGLclampf alpha);
88     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLClearStencilProc)(GrGLint s);
89     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLClientActiveTextureProc)(GrGLenum texture);
90     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLColorMaskProc)(GrGLboolean red, GrGLboolean green, GrGLboolean blue, GrGLboolean alpha);
91     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompileShaderProc)(GrGLuint shader);
92     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCompressedTexImage2DProc)(GrGLenum target, GrGLint level, GrGLenum internalformat, GrGLsizei width, GrGLsizei height, GrGLint border, GrGLsizei imageSize, const GrGLvoid* data);
93     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);
94     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyTexSubImage2DProc)(GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
95     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyTextureCHROMIUMProc)(GrGLenum target, GrGLenum src, GrGLenum dst, GrGLint level, GrGLint format, GrGLenum type);
96     typedef GrGLuint (GR_GL_FUNCTION_TYPE* GrGLCreateProgramProc)(void);
97     typedef GrGLuint (GR_GL_FUNCTION_TYPE* GrGLCreateShaderProc)(GrGLenum type);
98     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCullFaceProc)(GrGLenum mode);
99     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteBuffersProc)(GrGLsizei n, const GrGLuint* buffers);
100     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteFramebuffersProc)(GrGLsizei n, const GrGLuint *framebuffers);
101     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteProgramProc)(GrGLuint program);
102     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteQueriesProc)(GrGLsizei n, const GrGLuint *ids);
103     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteRenderbuffersProc)(GrGLsizei n, const GrGLuint *renderbuffers);
104     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteShaderProc)(GrGLuint shader);
105     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteTexturesProc)(GrGLsizei n, const GrGLuint* textures);
106     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeleteVertexArraysProc)(GrGLsizei n, const GrGLuint *arrays);
107     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDepthMaskProc)(GrGLboolean flag);
108     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDisableProc)(GrGLenum cap);
109     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDisableVertexAttribArrayProc)(GrGLuint index);
110     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawArraysProc)(GrGLenum mode, GrGLint first, GrGLsizei count);
111     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawBufferProc)(GrGLenum mode);
112     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawBuffersProc)(GrGLsizei n, const GrGLenum* bufs);
113     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDrawElementsProc)(GrGLenum mode, GrGLsizei count, GrGLenum type, const GrGLvoid* indices);
114     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLEnableProc)(GrGLenum cap);
115     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLEnableVertexAttribArrayProc)(GrGLuint index);
116     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLEndQueryProc)(GrGLenum target);
117     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFinishProc)();
118     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFlushProc)();
119     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFlushMappedBufferRangeProc)(GrGLenum target, GrGLintptr offset, GrGLsizeiptr length);
120     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFramebufferRenderbufferProc)(GrGLenum target, GrGLenum attachment, GrGLenum renderbuffertarget, GrGLuint renderbuffer);
121     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFramebufferTexture2DProc)(GrGLenum target, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level);
122     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFramebufferTexture2DMultisampleProc)(GrGLenum target, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level, GrGLsizei samples);
123     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLFrontFaceProc)(GrGLenum mode);
124     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenBuffersProc)(GrGLsizei n, GrGLuint* buffers);
125     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenFramebuffersProc)(GrGLsizei n, GrGLuint *framebuffers);
126     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenerateMipmapProc)(GrGLenum target);
127     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenQueriesProc)(GrGLsizei n, GrGLuint *ids);
128     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenRenderbuffersProc)(GrGLsizei n, GrGLuint *renderbuffers);
129     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenTexturesProc)(GrGLsizei n, GrGLuint* textures);
130     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGenVertexArraysProc)(GrGLsizei n, GrGLuint *arrays);
131     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetBufferParameterivProc)(GrGLenum target, GrGLenum pname, GrGLint* params);
132     typedef GrGLenum (GR_GL_FUNCTION_TYPE* GrGLGetErrorProc)();
133     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetFramebufferAttachmentParameterivProc)(GrGLenum target, GrGLenum attachment, GrGLenum pname, GrGLint* params);
134     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetIntegervProc)(GrGLenum pname, GrGLint* params);
135     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetProgramInfoLogProc)(GrGLuint program, GrGLsizei bufsize, GrGLsizei* length, char* infolog);
136     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetProgramivProc)(GrGLuint program, GrGLenum pname, GrGLint* params);
137     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryivProc)(GrGLenum GLtarget, GrGLenum pname, GrGLint *params);
138     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryObjecti64vProc)(GrGLuint id, GrGLenum pname, GrGLint64 *params);
139     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryObjectivProc)(GrGLuint id, GrGLenum pname, GrGLint *params);
140     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryObjectui64vProc)(GrGLuint id, GrGLenum pname, GrGLuint64 *params);
141     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetQueryObjectuivProc)(GrGLuint id, GrGLenum pname, GrGLuint *params);
142     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetRenderbufferParameterivProc)(GrGLenum target, GrGLenum pname, GrGLint* params);
143     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetShaderInfoLogProc)(GrGLuint shader, GrGLsizei bufsize, GrGLsizei* length, char* infolog);
144     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetShaderivProc)(GrGLuint shader, GrGLenum pname, GrGLint* params);
145     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetShaderPrecisionFormatProc)(GrGLenum shadertype, GrGLenum precisiontype, GrGLint *range, GrGLint *precision);
146     typedef const GrGLubyte* (GR_GL_FUNCTION_TYPE* GrGLGetStringProc)(GrGLenum name);
147     typedef const GrGLubyte* (GR_GL_FUNCTION_TYPE* GrGLGetStringiProc)(GrGLenum name, GrGLuint index);
148     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLGetTexLevelParameterivProc)(GrGLenum target, GrGLint level, GrGLenum pname, GrGLint* params);
149     typedef GrGLint (GR_GL_FUNCTION_TYPE* GrGLGetUniformLocationProc)(GrGLuint program, const char* name);
150     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInsertEventMarkerProc)(GrGLsizei length, const char* marker);
151     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateBufferDataProc)(GrGLuint buffer);
152     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateBufferSubDataProc)(GrGLuint buffer, GrGLintptr offset, GrGLsizeiptr length);
153     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateFramebufferProc)(GrGLenum target, GrGLsizei numAttachments,  const GrGLenum *attachments);
154     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateSubFramebufferProc)(GrGLenum target, GrGLsizei numAttachments, const GrGLenum *attachments, GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
155     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateTexImageProc)(GrGLuint texture, GrGLint level);
156     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInvalidateTexSubImageProc)(GrGLuint texture, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLint zoffset, GrGLsizei width, GrGLsizei height, GrGLsizei depth);
157     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLLineWidthProc)(GrGLfloat width);
158     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLLinkProgramProc)(GrGLuint program);
159     typedef GrGLvoid* (GR_GL_FUNCTION_TYPE* GrGLMapBufferProc)(GrGLenum target, GrGLenum access);
160     typedef GrGLvoid* (GR_GL_FUNCTION_TYPE* GrGLMapBufferRangeProc)(GrGLenum target, GrGLintptr offset, GrGLsizeiptr length, GrGLbitfield access);
161     typedef GrGLvoid* (GR_GL_FUNCTION_TYPE* GrGLMapBufferSubDataProc)(GrGLuint target, GrGLintptr offset, GrGLsizeiptr size, GrGLenum access);
162     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);
163     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPixelStoreiProc)(GrGLenum pname, GrGLint param);
164     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPopGroupMarkerProc)();
165     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPushGroupMarkerProc)(GrGLsizei length, const char* marker);
166     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLQueryCounterProc)(GrGLuint id, GrGLenum target);
167     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLReadBufferProc)(GrGLenum src);
168     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLReadPixelsProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, GrGLvoid* pixels);
169     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLRenderbufferStorageProc)(GrGLenum target, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
170     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLRenderbufferStorageMultisampleProc)(GrGLenum target, GrGLsizei samples, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
171     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLResolveMultisampleFramebufferProc)();
172     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLScissorProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
173     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLBindUniformLocation)(GrGLuint program, GrGLint location, const char* name);
174 
175 #if GR_GL_USE_NEW_SHADER_SOURCE_SIGNATURE
176     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLShaderSourceProc)(GrGLuint shader, GrGLsizei count, const char* const * str, const GrGLint* length);
177 #else
178     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLShaderSourceProc)(GrGLuint shader, GrGLsizei count, const char** str, const GrGLint* length);
179 #endif
180     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilFuncProc)(GrGLenum func, GrGLint ref, GrGLuint mask);
181     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilFuncSeparateProc)(GrGLenum face, GrGLenum func, GrGLint ref, GrGLuint mask);
182     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilMaskProc)(GrGLuint mask);
183     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilMaskSeparateProc)(GrGLenum face, GrGLuint mask);
184     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilOpProc)(GrGLenum fail, GrGLenum zfail, GrGLenum zpass);
185     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilOpSeparateProc)(GrGLenum face, GrGLenum fail, GrGLenum zfail, GrGLenum zpass);
186     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);
187     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTexParameteriProc)(GrGLenum target, GrGLenum pname, GrGLint param);
188     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTexParameterivProc)(GrGLenum target, GrGLenum pname, const GrGLint* params);
189     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTexStorage2DProc)(GrGLenum target, GrGLsizei levels, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
190     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDiscardFramebufferProc)(GrGLenum target, GrGLsizei numAttachments, const GrGLenum* attachments);
191     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);
192     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTextureBarrierProc)();
193     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform1fProc)(GrGLint location, GrGLfloat v0);
194     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform1iProc)(GrGLint location, GrGLint v0);
195     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform1fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
196     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform1ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
197     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform2fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1);
198     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform2iProc)(GrGLint location, GrGLint v0, GrGLint v1);
199     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform2fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
200     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform2ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
201     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform3fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1, GrGLfloat v2);
202     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform3iProc)(GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2);
203     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform3fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
204     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform3ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
205     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform4fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1, GrGLfloat v2, GrGLfloat v3);
206     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform4iProc)(GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2, GrGLint v3);
207     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform4fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
208     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniform4ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
209     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniformMatrix2fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value);
210     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniformMatrix3fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value);
211     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUniformMatrix4fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value);
212     typedef GrGLboolean (GR_GL_FUNCTION_TYPE* GrGLUnmapBufferProc)(GrGLenum target);
213     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUnmapBufferSubDataProc)(const GrGLvoid* mem);
214     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUnmapTexSubImage2DProc)(const GrGLvoid* mem);
215     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLUseProgramProc)(GrGLuint program);
216     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttrib1fProc)(GrGLuint indx, const GrGLfloat value);
217     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttrib2fvProc)(GrGLuint indx, const GrGLfloat* values);
218     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttrib3fvProc)(GrGLuint indx, const GrGLfloat* values);
219     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttrib4fvProc)(GrGLuint indx, const GrGLfloat* values);
220     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLVertexAttribPointerProc)(GrGLuint indx, GrGLint size, GrGLenum type, GrGLboolean normalized, GrGLsizei stride, const GrGLvoid* ptr);
221     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLViewportProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
222 
223     // Experimental: Functions for GL_NV_path_rendering. These will be
224     // alphabetized with the above functions once this is fully supported
225     // (and functions we are unlikely to use will possibly be omitted).
226     // EXT_direct_state_access
227     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLMatrixLoadfProc)(GrGLenum matrixMode, const GrGLfloat* m);
228     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLMatrixLoadIdentityProc)(GrGLenum);
229     // ARB_program_interface_query
230     typedef GrGLint (GR_GL_FUNCTION_TYPE* GrGLGetProgramResourceLocationProc)(GrGLuint program, GrGLenum programInterface, const GrGLchar *name);
231     // NV_path_rendering
232     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathCommandsProc)(GrGLuint path, GrGLsizei numCommands, const GrGLubyte *commands, GrGLsizei numCoords, GrGLenum coordType, const GrGLvoid *coords);
233     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathCoordsProc)(GrGLuint path, GrGLsizei numCoords, GrGLenum coordType, const GrGLvoid *coords);
234     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathSubCoordsProc)(GrGLuint path, GrGLsizei coordStart, GrGLsizei numCoords, GrGLenum coordType, const GrGLvoid *coords);
235     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathStringProc)(GrGLuint path, GrGLenum format, GrGLsizei length, const GrGLvoid *pathString);
236     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);
237     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);
238     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLWeightPathsProc)(GrGLuint resultPath, GrGLsizei numPaths, const GrGLuint paths[], const GrGLfloat weights[]);
239     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCopyPathProc)(GrGLuint resultPath, GrGLuint srcPath);
240     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLInterpolatePathsProc)(GrGLuint resultPath, GrGLuint pathA, GrGLuint pathB, GrGLfloat weight);
241     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLTransformPathProc)(GrGLuint resultPath, GrGLuint srcPath, GrGLenum transformType, const GrGLfloat *transformValues);
242     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathParameteriProc)(GrGLuint path, GrGLenum pname, GrGLint value);
243     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathParameterfProc)(GrGLuint path, GrGLenum pname, GrGLfloat value);
244     typedef GrGLuint (GR_GL_FUNCTION_TYPE* GrGLGenPathsProc)(GrGLsizei range);
245     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLDeletePathsProc)(GrGLuint path, GrGLsizei range);
246     typedef GrGLboolean (GR_GL_FUNCTION_TYPE* GrGLIsPathProc)(GrGLuint path);
247     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathStencilFuncProc)(GrGLenum func, GrGLint ref, GrGLuint mask);
248     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilFillPathProc)(GrGLuint path, GrGLenum fillMode, GrGLuint mask);
249     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilStrokePathProc)(GrGLuint path, GrGLint reference, GrGLuint mask);
250     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);
251     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);
252     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLPathTexGenProc)(GrGLenum texCoordSet, GrGLenum genMode, GrGLint components, const GrGLfloat *coeffs);
253     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverFillPathProc)(GrGLuint path, GrGLenum coverMode);
254     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverStrokePathProc)(GrGLuint name, GrGLenum coverMode);
255     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverFillPathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLenum coverMode, GrGLenum transformType, const GrGLfloat *transformValues);
256     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverStrokePathInstancedProc)(GrGLsizei numPaths, GrGLenum pathNameType, const GrGLvoid *paths, GrGLuint pathBase, GrGLenum coverMode, GrGLenum transformType, const GrGLfloat* transformValues);
257     // NV_path_rendering v1.2
258     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilThenCoverFillPathProc)(GrGLuint path, GrGLenum fillMode, GrGLuint mask, GrGLenum coverMode);
259     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLStencilThenCoverStrokePathProc)(GrGLuint path, GrGLint reference, GrGLuint mask, GrGLenum coverMode);
260     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);
261     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);
262     // NV_path_rendering v1.3
263     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLProgramPathFragmentInputGenProc)(GrGLuint program, GrGLint location, GrGLenum genMode, GrGLint components,const GrGLfloat *coeffs);
264     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);
265     // GL_NV_framebuffer_mixed_samples
266     typedef GrGLvoid (GR_GL_FUNCTION_TYPE* GrGLCoverageModulationProc)(GrGLenum components);
267 }  // extern "C"
268 
269 #endif
270