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/ui/gl/gl_bindings_autogen_gl.cc

https://gitlab.com/jonnialva90/iridium-browser
C++ | 1197 lines | 1112 code | 76 blank | 9 comment | 221 complexity | 799157a590ab935c9a2c696b885bc23a MD5 | raw file
    

  1. // Copyright 2014 The Chromium Authors. All rights reserved.
    2. 

  2. // Use of this source code is governed by a BSD-style license that can be
    3. 

  3. // found in the LICENSE file.
    4. 

  4. //
    5. 

  5. // This file is auto-generated from
    6. 

  6. // ui/gl/generate_bindings.py
    7. 

  7. // It's formatted by clang-format using chromium coding style:
    8. 

  8. //    clang-format -i -style=chromium filename
    9. 

  9. // DO NOT EDIT!
    10. 

  10. 

  11. #include <string>
    12. 

  12. 

  13. #include "base/trace_event/trace_event.h"
    14. 

  14. #include "ui/gl/gl_bindings.h"
    15. 

  15. #include "ui/gl/gl_context.h"
    16. 

  16. #include "ui/gl/gl_enums.h"
    17. 

  17. #include "ui/gl/gl_gl_api_implementation.h"
    18. 

  18. #include "ui/gl/gl_implementation.h"
    19. 

  19. #include "ui/gl/gl_version_info.h"
    20. 

  20. 

  21. namespace gfx {
    22. 

  22. 

  23. static bool g_debugBindingsInitialized;
    24. 

  24. DriverGL g_driver_gl;
    25. 

  25. 

  26. void DriverGL::InitializeStaticBindings() {
    27. 

  27.   fn.glActiveTextureFn = reinterpret_cast<glActiveTextureProc>(
    28. 

  28.       GetGLProcAddress("glActiveTexture"));
    29. 

  29.   fn.glApplyFramebufferAttachmentCMAAINTELFn = 0;
    30. 

  30.   fn.glAttachShaderFn =
    31. 

  31.       reinterpret_cast<glAttachShaderProc>(GetGLProcAddress("glAttachShader"));
    32. 

  32.   fn.glBeginQueryFn = 0;
    33. 

  33.   fn.glBeginTransformFeedbackFn = 0;
    34. 

  34.   fn.glBindAttribLocationFn = reinterpret_cast<glBindAttribLocationProc>(
    35. 

  35.       GetGLProcAddress("glBindAttribLocation"));
    36. 

  36.   fn.glBindBufferFn =
    37. 

  37.       reinterpret_cast<glBindBufferProc>(GetGLProcAddress("glBindBuffer"));
    38. 

  38.   fn.glBindBufferBaseFn = 0;
    39. 

  39.   fn.glBindBufferRangeFn = 0;
    40. 

  40.   fn.glBindFragDataLocationFn = 0;
    41. 

  41.   fn.glBindFragDataLocationIndexedFn = 0;
    42. 

  42.   fn.glBindFramebufferEXTFn = 0;
    43. 

  43.   fn.glBindRenderbufferEXTFn = 0;
    44. 

  44.   fn.glBindSamplerFn = 0;
    45. 

  45.   fn.glBindTextureFn =
    46. 

  46.       reinterpret_cast<glBindTextureProc>(GetGLProcAddress("glBindTexture"));
    47. 

  47.   fn.glBindTransformFeedbackFn = 0;
    48. 

  48.   fn.glBindVertexArrayOESFn = 0;
    49. 

  49.   fn.glBlendBarrierKHRFn = 0;
    50. 

  50.   fn.glBlendColorFn =
    51. 

  51.       reinterpret_cast<glBlendColorProc>(GetGLProcAddress("glBlendColor"));
    52. 

  52.   fn.glBlendEquationFn = reinterpret_cast<glBlendEquationProc>(
    53. 

  53.       GetGLProcAddress("glBlendEquation"));
    54. 

  54.   fn.glBlendEquationSeparateFn = reinterpret_cast<glBlendEquationSeparateProc>(
    55. 

  55.       GetGLProcAddress("glBlendEquationSeparate"));
    56. 

  56.   fn.glBlendFuncFn =
    57. 

  57.       reinterpret_cast<glBlendFuncProc>(GetGLProcAddress("glBlendFunc"));
    58. 

  58.   fn.glBlendFuncSeparateFn = reinterpret_cast<glBlendFuncSeparateProc>(
    59. 

  59.       GetGLProcAddress("glBlendFuncSeparate"));
    60. 

  60.   fn.glBlitFramebufferFn = 0;
    61. 

  61.   fn.glBlitFramebufferANGLEFn = 0;
    62. 

  62.   fn.glBlitFramebufferEXTFn = 0;
    63. 

  63.   fn.glBufferDataFn =
    64. 

  64.       reinterpret_cast<glBufferDataProc>(GetGLProcAddress("glBufferData"));
    65. 

  65.   fn.glBufferSubDataFn = reinterpret_cast<glBufferSubDataProc>(
    66. 

  66.       GetGLProcAddress("glBufferSubData"));
    67. 

  67.   fn.glCheckFramebufferStatusEXTFn = 0;
    68. 

  68.   fn.glClearFn = reinterpret_cast<glClearProc>(GetGLProcAddress("glClear"));
    69. 

  69.   fn.glClearBufferfiFn = 0;
    70. 

  70.   fn.glClearBufferfvFn = 0;
    71. 

  71.   fn.glClearBufferivFn = 0;
    72. 

  72.   fn.glClearBufferuivFn = 0;
    73. 

  73.   fn.glClearColorFn =
    74. 

  74.       reinterpret_cast<glClearColorProc>(GetGLProcAddress("glClearColor"));
    75. 

  75.   fn.glClearDepthFn =
    76. 

  76.       reinterpret_cast<glClearDepthProc>(GetGLProcAddress("glClearDepth"));
    77. 

  77.   fn.glClearDepthfFn = 0;
    78. 

  78.   fn.glClearStencilFn =
    79. 

  79.       reinterpret_cast<glClearStencilProc>(GetGLProcAddress("glClearStencil"));
    80. 

  80.   fn.glClientWaitSyncFn = 0;
    81. 

  81.   fn.glColorMaskFn =
    82. 

  82.       reinterpret_cast<glColorMaskProc>(GetGLProcAddress("glColorMask"));
    83. 

  83.   fn.glCompileShaderFn = reinterpret_cast<glCompileShaderProc>(
    84. 

  84.       GetGLProcAddress("glCompileShader"));
    85. 

  85.   fn.glCompressedTexImage2DFn = reinterpret_cast<glCompressedTexImage2DProc>(
    86. 

  86.       GetGLProcAddress("glCompressedTexImage2D"));
    87. 

  87.   fn.glCompressedTexImage3DFn = 0;
    88. 

  88.   fn.glCompressedTexSubImage2DFn =
    89. 

  89.       reinterpret_cast<glCompressedTexSubImage2DProc>(
    90. 

  90.           GetGLProcAddress("glCompressedTexSubImage2D"));
    91. 

  91.   fn.glCompressedTexSubImage3DFn = 0;
    92. 

  92.   fn.glCopyBufferSubDataFn = 0;
    93. 

  93.   fn.glCopyTexImage2DFn = reinterpret_cast<glCopyTexImage2DProc>(
    94. 

  94.       GetGLProcAddress("glCopyTexImage2D"));
    95. 

  95.   fn.glCopyTexSubImage2DFn = reinterpret_cast<glCopyTexSubImage2DProc>(
    96. 

  96.       GetGLProcAddress("glCopyTexSubImage2D"));
    97. 

  97.   fn.glCopyTexSubImage3DFn = 0;
    98. 

  98.   fn.glCoverFillPathNVFn = 0;
    99. 

  99.   fn.glCoverStrokePathNVFn = 0;
    100. 

  100.   fn.glCreateProgramFn = reinterpret_cast<glCreateProgramProc>(
    101. 

  101.       GetGLProcAddress("glCreateProgram"));
    102. 

  102.   fn.glCreateShaderFn =
    103. 

  103.       reinterpret_cast<glCreateShaderProc>(GetGLProcAddress("glCreateShader"));
    104. 

  104.   fn.glCullFaceFn =
    105. 

  105.       reinterpret_cast<glCullFaceProc>(GetGLProcAddress("glCullFace"));
    106. 

  106.   fn.glDeleteBuffersARBFn = reinterpret_cast<glDeleteBuffersARBProc>(
    107. 

  107.       GetGLProcAddress("glDeleteBuffers"));
    108. 

  108.   fn.glDeleteFencesAPPLEFn = 0;
    109. 

  109.   fn.glDeleteFencesNVFn = 0;
    110. 

  110.   fn.glDeleteFramebuffersEXTFn = 0;
    111. 

  111.   fn.glDeletePathsNVFn = 0;
    112. 

  112.   fn.glDeleteProgramFn = reinterpret_cast<glDeleteProgramProc>(
    113. 

  113.       GetGLProcAddress("glDeleteProgram"));
    114. 

  114.   fn.glDeleteQueriesFn = 0;
    115. 

  115.   fn.glDeleteRenderbuffersEXTFn = 0;
    116. 

  116.   fn.glDeleteSamplersFn = 0;
    117. 

  117.   fn.glDeleteShaderFn =
    118. 

  118.       reinterpret_cast<glDeleteShaderProc>(GetGLProcAddress("glDeleteShader"));
    119. 

  119.   fn.glDeleteSyncFn = 0;
    120. 

  120.   fn.glDeleteTexturesFn = reinterpret_cast<glDeleteTexturesProc>(
    121. 

  121.       GetGLProcAddress("glDeleteTextures"));
    122. 

  122.   fn.glDeleteTransformFeedbacksFn = 0;
    123. 

  123.   fn.glDeleteVertexArraysOESFn = 0;
    124. 

  124.   fn.glDepthFuncFn =
    125. 

  125.       reinterpret_cast<glDepthFuncProc>(GetGLProcAddress("glDepthFunc"));
    126. 

  126.   fn.glDepthMaskFn =
    127. 

  127.       reinterpret_cast<glDepthMaskProc>(GetGLProcAddress("glDepthMask"));
    128. 

  128.   fn.glDepthRangeFn =
    129. 

  129.       reinterpret_cast<glDepthRangeProc>(GetGLProcAddress("glDepthRange"));
    130. 

  130.   fn.glDepthRangefFn = 0;
    131. 

  131.   fn.glDetachShaderFn =
    132. 

  132.       reinterpret_cast<glDetachShaderProc>(GetGLProcAddress("glDetachShader"));
    133. 

  133.   fn.glDisableFn =
    134. 

  134.       reinterpret_cast<glDisableProc>(GetGLProcAddress("glDisable"));
    135. 

  135.   fn.glDisableVertexAttribArrayFn =
    136. 

  136.       reinterpret_cast<glDisableVertexAttribArrayProc>(
    137. 

  137.           GetGLProcAddress("glDisableVertexAttribArray"));
    138. 

  138.   fn.glDiscardFramebufferEXTFn = 0;
    139. 

  139.   fn.glDrawArraysFn =
    140. 

  140.       reinterpret_cast<glDrawArraysProc>(GetGLProcAddress("glDrawArrays"));
    141. 

  141.   fn.glDrawArraysInstancedANGLEFn = 0;
    142. 

  142.   fn.glDrawBufferFn = 0;
    143. 

  143.   fn.glDrawBuffersARBFn = 0;
    144. 

  144.   fn.glDrawElementsFn =
    145. 

  145.       reinterpret_cast<glDrawElementsProc>(GetGLProcAddress("glDrawElements"));
    146. 

  146.   fn.glDrawElementsInstancedANGLEFn = 0;
    147. 

  147.   fn.glDrawRangeElementsFn = 0;
    148. 

  148.   fn.glEGLImageTargetRenderbufferStorageOESFn = 0;
    149. 

  149.   fn.glEGLImageTargetTexture2DOESFn = 0;
    150. 

  150.   fn.glEnableFn = reinterpret_cast<glEnableProc>(GetGLProcAddress("glEnable"));
    151. 

  151.   fn.glEnableVertexAttribArrayFn =
    152. 

  152.       reinterpret_cast<glEnableVertexAttribArrayProc>(
    153. 

  153.           GetGLProcAddress("glEnableVertexAttribArray"));
    154. 

  154.   fn.glEndQueryFn = 0;
    155. 

  155.   fn.glEndTransformFeedbackFn = 0;
    156. 

  156.   fn.glFenceSyncFn = 0;
    157. 

  157.   fn.glFinishFn = reinterpret_cast<glFinishProc>(GetGLProcAddress("glFinish"));
    158. 

  158.   fn.glFinishFenceAPPLEFn = 0;
    159. 

  159.   fn.glFinishFenceNVFn = 0;
    160. 

  160.   fn.glFlushFn = reinterpret_cast<glFlushProc>(GetGLProcAddress("glFlush"));
    161. 

  161.   fn.glFlushMappedBufferRangeFn = 0;
    162. 

  162.   fn.glFramebufferRenderbufferEXTFn = 0;
    163. 

  163.   fn.glFramebufferTexture2DEXTFn = 0;
    164. 

  164.   fn.glFramebufferTexture2DMultisampleEXTFn = 0;
    165. 

  165.   fn.glFramebufferTexture2DMultisampleIMGFn = 0;
    166. 

  166.   fn.glFramebufferTextureLayerFn = 0;
    167. 

  167.   fn.glFrontFaceFn =
    168. 

  168.       reinterpret_cast<glFrontFaceProc>(GetGLProcAddress("glFrontFace"));
    169. 

  169.   fn.glGenBuffersARBFn =
    170. 

  170.       reinterpret_cast<glGenBuffersARBProc>(GetGLProcAddress("glGenBuffers"));
    171. 

  171.   fn.glGenerateMipmapEXTFn = 0;
    172. 

  172.   fn.glGenFencesAPPLEFn = 0;
    173. 

  173.   fn.glGenFencesNVFn = 0;
    174. 

  174.   fn.glGenFramebuffersEXTFn = 0;
    175. 

  175.   fn.glGenPathsNVFn = 0;
    176. 

  176.   fn.glGenQueriesFn = 0;
    177. 

  177.   fn.glGenRenderbuffersEXTFn = 0;
    178. 

  178.   fn.glGenSamplersFn = 0;
    179. 

  179.   fn.glGenTexturesFn =
    180. 

  180.       reinterpret_cast<glGenTexturesProc>(GetGLProcAddress("glGenTextures"));
    181. 

  181.   fn.glGenTransformFeedbacksFn = 0;
    182. 

  182.   fn.glGenVertexArraysOESFn = 0;
    183. 

  183.   fn.glGetActiveAttribFn = reinterpret_cast<glGetActiveAttribProc>(
    184. 

  184.       GetGLProcAddress("glGetActiveAttrib"));
    185. 

  185.   fn.glGetActiveUniformFn = reinterpret_cast<glGetActiveUniformProc>(
    186. 

  186.       GetGLProcAddress("glGetActiveUniform"));
    187. 

  187.   fn.glGetActiveUniformBlockivFn = 0;
    188. 

  188.   fn.glGetActiveUniformBlockNameFn = 0;
    189. 

  189.   fn.glGetActiveUniformsivFn = 0;
    190. 

  190.   fn.glGetAttachedShadersFn = reinterpret_cast<glGetAttachedShadersProc>(
    191. 

  191.       GetGLProcAddress("glGetAttachedShaders"));
    192. 

  192.   fn.glGetAttribLocationFn = reinterpret_cast<glGetAttribLocationProc>(
    193. 

  193.       GetGLProcAddress("glGetAttribLocation"));
    194. 

  194.   fn.glGetBooleanvFn =
    195. 

  195.       reinterpret_cast<glGetBooleanvProc>(GetGLProcAddress("glGetBooleanv"));
    196. 

  196.   fn.glGetBufferParameterivFn = reinterpret_cast<glGetBufferParameterivProc>(
    197. 

  197.       GetGLProcAddress("glGetBufferParameteriv"));
    198. 

  198.   fn.glGetErrorFn =
    199. 

  199.       reinterpret_cast<glGetErrorProc>(GetGLProcAddress("glGetError"));
    200. 

  200.   fn.glGetFenceivNVFn = 0;
    201. 

  201.   fn.glGetFloatvFn =
    202. 

  202.       reinterpret_cast<glGetFloatvProc>(GetGLProcAddress("glGetFloatv"));
    203. 

  203.   fn.glGetFragDataLocationFn = 0;
    204. 

  204.   fn.glGetFramebufferAttachmentParameterivEXTFn = 0;
    205. 

  205.   fn.glGetGraphicsResetStatusARBFn = 0;
    206. 

  206.   fn.glGetInteger64i_vFn = 0;
    207. 

  207.   fn.glGetInteger64vFn = 0;
    208. 

  208.   fn.glGetIntegeri_vFn = 0;
    209. 

  209.   fn.glGetIntegervFn =
    210. 

  210.       reinterpret_cast<glGetIntegervProc>(GetGLProcAddress("glGetIntegerv"));
    211. 

  211.   fn.glGetInternalformativFn = 0;
    212. 

  212.   fn.glGetProgramBinaryFn = 0;
    213. 

  213.   fn.glGetProgramInfoLogFn = reinterpret_cast<glGetProgramInfoLogProc>(
    214. 

  214.       GetGLProcAddress("glGetProgramInfoLog"));
    215. 

  215.   fn.glGetProgramivFn =
    216. 

  216.       reinterpret_cast<glGetProgramivProc>(GetGLProcAddress("glGetProgramiv"));
    217. 

  217.   fn.glGetProgramResourceLocationFn = 0;
    218. 

  218.   fn.glGetQueryivFn = 0;
    219. 

  219.   fn.glGetQueryObjecti64vFn = 0;
    220. 

  220.   fn.glGetQueryObjectivFn = 0;
    221. 

  221.   fn.glGetQueryObjectui64vFn = 0;
    222. 

  222.   fn.glGetQueryObjectuivFn = 0;
    223. 

  223.   fn.glGetRenderbufferParameterivEXTFn = 0;
    224. 

  224.   fn.glGetSamplerParameterfvFn = 0;
    225. 

  225.   fn.glGetSamplerParameterivFn = 0;
    226. 

  226.   fn.glGetShaderInfoLogFn = reinterpret_cast<glGetShaderInfoLogProc>(
    227. 

  227.       GetGLProcAddress("glGetShaderInfoLog"));
    228. 

  228.   fn.glGetShaderivFn =
    229. 

  229.       reinterpret_cast<glGetShaderivProc>(GetGLProcAddress("glGetShaderiv"));
    230. 

  230.   fn.glGetShaderPrecisionFormatFn = 0;
    231. 

  231.   fn.glGetShaderSourceFn = reinterpret_cast<glGetShaderSourceProc>(
    232. 

  232.       GetGLProcAddress("glGetShaderSource"));
    233. 

  233.   fn.glGetStringFn =
    234. 

  234.       reinterpret_cast<glGetStringProc>(GetGLProcAddress("glGetString"));
    235. 

  235.   fn.glGetStringiFn =
    236. 

  236.       reinterpret_cast<glGetStringiProc>(GetGLProcAddress("glGetStringi"));
    237. 

  237.   fn.glGetSyncivFn = 0;
    238. 

  238.   fn.glGetTexLevelParameterfvFn = 0;
    239. 

  239.   fn.glGetTexLevelParameterivFn = 0;
    240. 

  240.   fn.glGetTexParameterfvFn = reinterpret_cast<glGetTexParameterfvProc>(
    241. 

  241.       GetGLProcAddress("glGetTexParameterfv"));
    242. 

  242.   fn.glGetTexParameterivFn = reinterpret_cast<glGetTexParameterivProc>(
    243. 

  243.       GetGLProcAddress("glGetTexParameteriv"));
    244. 

  244.   fn.glGetTransformFeedbackVaryingFn = 0;
    245. 

  245.   fn.glGetTranslatedShaderSourceANGLEFn = 0;
    246. 

  246.   fn.glGetUniformBlockIndexFn = 0;
    247. 

  247.   fn.glGetUniformfvFn =
    248. 

  248.       reinterpret_cast<glGetUniformfvProc>(GetGLProcAddress("glGetUniformfv"));
    249. 

  249.   fn.glGetUniformIndicesFn = 0;
    250. 

  250.   fn.glGetUniformivFn =
    251. 

  251.       reinterpret_cast<glGetUniformivProc>(GetGLProcAddress("glGetUniformiv"));
    252. 

  252.   fn.glGetUniformLocationFn = reinterpret_cast<glGetUniformLocationProc>(
    253. 

  253.       GetGLProcAddress("glGetUniformLocation"));
    254. 

  254.   fn.glGetUniformuivFn = 0;
    255. 

  255.   fn.glGetVertexAttribfvFn = reinterpret_cast<glGetVertexAttribfvProc>(
    256. 

  256.       GetGLProcAddress("glGetVertexAttribfv"));
    257. 

  257.   fn.glGetVertexAttribivFn = reinterpret_cast<glGetVertexAttribivProc>(
    258. 

  258.       GetGLProcAddress("glGetVertexAttribiv"));
    259. 

  259.   fn.glGetVertexAttribPointervFn =
    260. 

  260.       reinterpret_cast<glGetVertexAttribPointervProc>(
    261. 

  261.           GetGLProcAddress("glGetVertexAttribPointerv"));
    262. 

  262.   fn.glHintFn = reinterpret_cast<glHintProc>(GetGLProcAddress("glHint"));
    263. 

  263.   fn.glInsertEventMarkerEXTFn = 0;
    264. 

  264.   fn.glInvalidateFramebufferFn = 0;
    265. 

  265.   fn.glInvalidateSubFramebufferFn = 0;
    266. 

  266.   fn.glIsBufferFn =
    267. 

  267.       reinterpret_cast<glIsBufferProc>(GetGLProcAddress("glIsBuffer"));
    268. 

  268.   fn.glIsEnabledFn =
    269. 

  269.       reinterpret_cast<glIsEnabledProc>(GetGLProcAddress("glIsEnabled"));
    270. 

  270.   fn.glIsFenceAPPLEFn = 0;
    271. 

  271.   fn.glIsFenceNVFn = 0;
    272. 

  272.   fn.glIsFramebufferEXTFn = 0;
    273. 

  273.   fn.glIsPathNVFn = 0;
    274. 

  274.   fn.glIsProgramFn =
    275. 

  275.       reinterpret_cast<glIsProgramProc>(GetGLProcAddress("glIsProgram"));
    276. 

  276.   fn.glIsQueryFn = 0;
    277. 

  277.   fn.glIsRenderbufferEXTFn = 0;
    278. 

  278.   fn.glIsSamplerFn = 0;
    279. 

  279.   fn.glIsShaderFn =
    280. 

  280.       reinterpret_cast<glIsShaderProc>(GetGLProcAddress("glIsShader"));
    281. 

  281.   fn.glIsSyncFn = 0;
    282. 

  282.   fn.glIsTextureFn =
    283. 

  283.       reinterpret_cast<glIsTextureProc>(GetGLProcAddress("glIsTexture"));
    284. 

  284.   fn.glIsTransformFeedbackFn = 0;
    285. 

  285.   fn.glIsVertexArrayOESFn = 0;
    286. 

  286.   fn.glLineWidthFn =
    287. 

  287.       reinterpret_cast<glLineWidthProc>(GetGLProcAddress("glLineWidth"));
    288. 

  288.   fn.glLinkProgramFn =
    289. 

  289.       reinterpret_cast<glLinkProgramProc>(GetGLProcAddress("glLinkProgram"));
    290. 

  290.   fn.glMapBufferFn = 0;
    291. 

  291.   fn.glMapBufferRangeFn = 0;
    292. 

  292.   fn.glMatrixLoadfEXTFn = 0;
    293. 

  293.   fn.glMatrixLoadIdentityEXTFn = 0;
    294. 

  294.   fn.glPathCommandsNVFn = 0;
    295. 

  295.   fn.glPathParameterfNVFn = 0;
    296. 

  296.   fn.glPathParameteriNVFn = 0;
    297. 

  297.   fn.glPathStencilFuncNVFn = 0;
    298. 

  298.   fn.glPauseTransformFeedbackFn = 0;
    299. 

  299.   fn.glPixelStoreiFn =
    300. 

  300.       reinterpret_cast<glPixelStoreiProc>(GetGLProcAddress("glPixelStorei"));
    301. 

  301.   fn.glPointParameteriFn = 0;
    302. 

  302.   fn.glPolygonOffsetFn = reinterpret_cast<glPolygonOffsetProc>(
    303. 

  303.       GetGLProcAddress("glPolygonOffset"));
    304. 

  304.   fn.glPopGroupMarkerEXTFn = 0;
    305. 

  305.   fn.glProgramBinaryFn = 0;
    306. 

  306.   fn.glProgramParameteriFn = 0;
    307. 

  307.   fn.glPushGroupMarkerEXTFn = 0;
    308. 

  308.   fn.glQueryCounterFn = 0;
    309. 

  309.   fn.glReadBufferFn = 0;
    310. 

  310.   fn.glReadPixelsFn =
    311. 

  311.       reinterpret_cast<glReadPixelsProc>(GetGLProcAddress("glReadPixels"));
    312. 

  312.   fn.glReleaseShaderCompilerFn = 0;
    313. 

  313.   fn.glRenderbufferStorageEXTFn = 0;
    314. 

  314.   fn.glRenderbufferStorageMultisampleFn = 0;
    315. 

  315.   fn.glRenderbufferStorageMultisampleANGLEFn = 0;
    316. 

  316.   fn.glRenderbufferStorageMultisampleEXTFn = 0;
    317. 

  317.   fn.glRenderbufferStorageMultisampleIMGFn = 0;
    318. 

  318.   fn.glResumeTransformFeedbackFn = 0;
    319. 

  319.   fn.glSampleCoverageFn = reinterpret_cast<glSampleCoverageProc>(
    320. 

  320.       GetGLProcAddress("glSampleCoverage"));
    321. 

  321.   fn.glSamplerParameterfFn = 0;
    322. 

  322.   fn.glSamplerParameterfvFn = 0;
    323. 

  323.   fn.glSamplerParameteriFn = 0;
    324. 

  324.   fn.glSamplerParameterivFn = 0;
    325. 

  325.   fn.glScissorFn =
    326. 

  326.       reinterpret_cast<glScissorProc>(GetGLProcAddress("glScissor"));
    327. 

  327.   fn.glSetFenceAPPLEFn = 0;
    328. 

  328.   fn.glSetFenceNVFn = 0;
    329. 

  329.   fn.glShaderBinaryFn = 0;
    330. 

  330.   fn.glShaderSourceFn =
    331. 

  331.       reinterpret_cast<glShaderSourceProc>(GetGLProcAddress("glShaderSource"));
    332. 

  332.   fn.glStencilFillPathNVFn = 0;
    333. 

  333.   fn.glStencilFuncFn =
    334. 

  334.       reinterpret_cast<glStencilFuncProc>(GetGLProcAddress("glStencilFunc"));
    335. 

  335.   fn.glStencilFuncSeparateFn = reinterpret_cast<glStencilFuncSeparateProc>(
    336. 

  336.       GetGLProcAddress("glStencilFuncSeparate"));
    337. 

  337.   fn.glStencilMaskFn =
    338. 

  338.       reinterpret_cast<glStencilMaskProc>(GetGLProcAddress("glStencilMask"));
    339. 

  339.   fn.glStencilMaskSeparateFn = reinterpret_cast<glStencilMaskSeparateProc>(
    340. 

  340.       GetGLProcAddress("glStencilMaskSeparate"));
    341. 

  341.   fn.glStencilOpFn =
    342. 

  342.       reinterpret_cast<glStencilOpProc>(GetGLProcAddress("glStencilOp"));
    343. 

  343.   fn.glStencilOpSeparateFn = reinterpret_cast<glStencilOpSeparateProc>(
    344. 

  344.       GetGLProcAddress("glStencilOpSeparate"));
    345. 

  345.   fn.glStencilStrokePathNVFn = 0;
    346. 

  346.   fn.glStencilThenCoverFillPathNVFn = 0;
    347. 

  347.   fn.glStencilThenCoverStrokePathNVFn = 0;
    348. 

  348.   fn.glTestFenceAPPLEFn = 0;
    349. 

  349.   fn.glTestFenceNVFn = 0;
    350. 

  350.   fn.glTexImage2DFn =
    351. 

  351.       reinterpret_cast<glTexImage2DProc>(GetGLProcAddress("glTexImage2D"));
    352. 

  352.   fn.glTexImage3DFn = 0;
    353. 

  353.   fn.glTexParameterfFn = reinterpret_cast<glTexParameterfProc>(
    354. 

  354.       GetGLProcAddress("glTexParameterf"));
    355. 

  355.   fn.glTexParameterfvFn = reinterpret_cast<glTexParameterfvProc>(
    356. 

  356.       GetGLProcAddress("glTexParameterfv"));
    357. 

  357.   fn.glTexParameteriFn = reinterpret_cast<glTexParameteriProc>(
    358. 

  358.       GetGLProcAddress("glTexParameteri"));
    359. 

  359.   fn.glTexParameterivFn = reinterpret_cast<glTexParameterivProc>(
    360. 

  360.       GetGLProcAddress("glTexParameteriv"));
    361. 

  361.   fn.glTexStorage2DEXTFn = 0;
    362. 

  362.   fn.glTexStorage3DFn = 0;
    363. 

  363.   fn.glTexSubImage2DFn = reinterpret_cast<glTexSubImage2DProc>(
    364. 

  364.       GetGLProcAddress("glTexSubImage2D"));
    365. 

  365.   fn.glTexSubImage3DFn = 0;
    366. 

  366.   fn.glTransformFeedbackVaryingsFn = 0;
    367. 

  367.   fn.glUniform1fFn =
    368. 

  368.       reinterpret_cast<glUniform1fProc>(GetGLProcAddress("glUniform1f"));
    369. 

  369.   fn.glUniform1fvFn =
    370. 

  370.       reinterpret_cast<glUniform1fvProc>(GetGLProcAddress("glUniform1fv"));
    371. 

  371.   fn.glUniform1iFn =
    372. 

  372.       reinterpret_cast<glUniform1iProc>(GetGLProcAddress("glUniform1i"));
    373. 

  373.   fn.glUniform1ivFn =
    374. 

  374.       reinterpret_cast<glUniform1ivProc>(GetGLProcAddress("glUniform1iv"));
    375. 

  375.   fn.glUniform1uiFn = 0;
    376. 

  376.   fn.glUniform1uivFn = 0;
    377. 

  377.   fn.glUniform2fFn =
    378. 

  378.       reinterpret_cast<glUniform2fProc>(GetGLProcAddress("glUniform2f"));
    379. 

  379.   fn.glUniform2fvFn =
    380. 

  380.       reinterpret_cast<glUniform2fvProc>(GetGLProcAddress("glUniform2fv"));
    381. 

  381.   fn.glUniform2iFn =
    382. 

  382.       reinterpret_cast<glUniform2iProc>(GetGLProcAddress("glUniform2i"));
    383. 

  383.   fn.glUniform2ivFn =
    384. 

  384.       reinterpret_cast<glUniform2ivProc>(GetGLProcAddress("glUniform2iv"));
    385. 

  385.   fn.glUniform2uiFn = 0;
    386. 

  386.   fn.glUniform2uivFn = 0;
    387. 

  387.   fn.glUniform3fFn =
    388. 

  388.       reinterpret_cast<glUniform3fProc>(GetGLProcAddress("glUniform3f"));
    389. 

  389.   fn.glUniform3fvFn =
    390. 

  390.       reinterpret_cast<glUniform3fvProc>(GetGLProcAddress("glUniform3fv"));
    391. 

  391.   fn.glUniform3iFn =
    392. 

  392.       reinterpret_cast<glUniform3iProc>(GetGLProcAddress("glUniform3i"));
    393. 

  393.   fn.glUniform3ivFn =
    394. 

  394.       reinterpret_cast<glUniform3ivProc>(GetGLProcAddress("glUniform3iv"));
    395. 

  395.   fn.glUniform3uiFn = 0;
    396. 

  396.   fn.glUniform3uivFn = 0;
    397. 

  397.   fn.glUniform4fFn =
    398. 

  398.       reinterpret_cast<glUniform4fProc>(GetGLProcAddress("glUniform4f"));
    399. 

  399.   fn.glUniform4fvFn =
    400. 

  400.       reinterpret_cast<glUniform4fvProc>(GetGLProcAddress("glUniform4fv"));
    401. 

  401.   fn.glUniform4iFn =
    402. 

  402.       reinterpret_cast<glUniform4iProc>(GetGLProcAddress("glUniform4i"));
    403. 

  403.   fn.glUniform4ivFn =
    404. 

  404.       reinterpret_cast<glUniform4ivProc>(GetGLProcAddress("glUniform4iv"));
    405. 

  405.   fn.glUniform4uiFn = 0;
    406. 

  406.   fn.glUniform4uivFn = 0;
    407. 

  407.   fn.glUniformBlockBindingFn = 0;
    408. 

  408.   fn.glUniformMatrix2fvFn = reinterpret_cast<glUniformMatrix2fvProc>(
    409. 

  409.       GetGLProcAddress("glUniformMatrix2fv"));
    410. 

  410.   fn.glUniformMatrix2x3fvFn = 0;
    411. 

  411.   fn.glUniformMatrix2x4fvFn = 0;
    412. 

  412.   fn.glUniformMatrix3fvFn = reinterpret_cast<glUniformMatrix3fvProc>(
    413. 

  413.       GetGLProcAddress("glUniformMatrix3fv"));
    414. 

  414.   fn.glUniformMatrix3x2fvFn = 0;
    415. 

  415.   fn.glUniformMatrix3x4fvFn = 0;
    416. 

  416.   fn.glUniformMatrix4fvFn = reinterpret_cast<glUniformMatrix4fvProc>(
    417. 

  417.       GetGLProcAddress("glUniformMatrix4fv"));
    418. 

  418.   fn.glUniformMatrix4x2fvFn = 0;
    419. 

  419.   fn.glUniformMatrix4x3fvFn = 0;
    420. 

  420.   fn.glUnmapBufferFn = 0;
    421. 

  421.   fn.glUseProgramFn =
    422. 

  422.       reinterpret_cast<glUseProgramProc>(GetGLProcAddress("glUseProgram"));
    423. 

  423.   fn.glValidateProgramFn = reinterpret_cast<glValidateProgramProc>(
    424. 

  424.       GetGLProcAddress("glValidateProgram"));
    425. 

  425.   fn.glVertexAttrib1fFn = reinterpret_cast<glVertexAttrib1fProc>(
    426. 

  426.       GetGLProcAddress("glVertexAttrib1f"));
    427. 

  427.   fn.glVertexAttrib1fvFn = reinterpret_cast<glVertexAttrib1fvProc>(
    428. 

  428.       GetGLProcAddress("glVertexAttrib1fv"));
    429. 

  429.   fn.glVertexAttrib2fFn = reinterpret_cast<glVertexAttrib2fProc>(
    430. 

  430.       GetGLProcAddress("glVertexAttrib2f"));
    431. 

  431.   fn.glVertexAttrib2fvFn = reinterpret_cast<glVertexAttrib2fvProc>(
    432. 

  432.       GetGLProcAddress("glVertexAttrib2fv"));
    433. 

  433.   fn.glVertexAttrib3fFn = reinterpret_cast<glVertexAttrib3fProc>(
    434. 

  434.       GetGLProcAddress("glVertexAttrib3f"));
    435. 

  435.   fn.glVertexAttrib3fvFn = reinterpret_cast<glVertexAttrib3fvProc>(
    436. 

  436.       GetGLProcAddress("glVertexAttrib3fv"));
    437. 

  437.   fn.glVertexAttrib4fFn = reinterpret_cast<glVertexAttrib4fProc>(
    438. 

  438.       GetGLProcAddress("glVertexAttrib4f"));
    439. 

  439.   fn.glVertexAttrib4fvFn = reinterpret_cast<glVertexAttrib4fvProc>(
    440. 

  440.       GetGLProcAddress("glVertexAttrib4fv"));
    441. 

  441.   fn.glVertexAttribDivisorANGLEFn = 0;
    442. 

  442.   fn.glVertexAttribI4iFn = 0;
    443. 

  443.   fn.glVertexAttribI4ivFn = 0;
    444. 

  444.   fn.glVertexAttribI4uiFn = 0;
    445. 

  445.   fn.glVertexAttribI4uivFn = 0;
    446. 

  446.   fn.glVertexAttribIPointerFn = 0;
    447. 

  447.   fn.glVertexAttribPointerFn = reinterpret_cast<glVertexAttribPointerProc>(
    448. 

  448.       GetGLProcAddress("glVertexAttribPointer"));
    449. 

  449.   fn.glViewportFn =
    450. 

  450.       reinterpret_cast<glViewportProc>(GetGLProcAddress("glViewport"));
    451. 

  451.   fn.glWaitSyncFn = 0;
    452. 

  452. }
    453. 

  453. 

  454. void DriverGL::InitializeDynamicBindings(GLContext* context) {
    455. 

  455.   DCHECK(context && context->IsCurrent(NULL));
    456. 

  456.   const GLVersionInfo* ver = context->GetVersionInfo();
    457. 

  457.   ALLOW_UNUSED_LOCAL(ver);
    458. 

  458.   std::string extensions = context->GetExtensions() + " ";
    459. 

  459.   ALLOW_UNUSED_LOCAL(extensions);
    460. 

  460. 

  461.   ext.b_GL_ANGLE_framebuffer_blit =
    462. 

  462.       extensions.find("GL_ANGLE_framebuffer_blit ") != std::string::npos;
    463. 

  463.   ext.b_GL_ANGLE_framebuffer_multisample =
    464. 

  464.       extensions.find("GL_ANGLE_framebuffer_multisample ") != std::string::npos;
    465. 

  465.   ext.b_GL_ANGLE_instanced_arrays =
    466. 

  466.       extensions.find("GL_ANGLE_instanced_arrays ") != std::string::npos;
    467. 

  467.   ext.b_GL_ANGLE_translated_shader_source =
    468. 

  468.       extensions.find("GL_ANGLE_translated_shader_source ") !=
    469. 

  469.       std::string::npos;
    470. 

  470.   ext.b_GL_APPLE_fence =
    471. 

  471.       extensions.find("GL_APPLE_fence ") != std::string::npos;
    472. 

  472.   ext.b_GL_APPLE_vertex_array_object =
    473. 

  473.       extensions.find("GL_APPLE_vertex_array_object ") != std::string::npos;
    474. 

  474.   ext.b_GL_ARB_draw_buffers =
    475. 

  475.       extensions.find("GL_ARB_draw_buffers ") != std::string::npos;
    476. 

  476.   ext.b_GL_ARB_draw_instanced =
    477. 

  477.       extensions.find("GL_ARB_draw_instanced ") != std::string::npos;
    478. 

  478.   ext.b_GL_ARB_get_program_binary =
    479. 

  479.       extensions.find("GL_ARB_get_program_binary ") != std::string::npos;
    480. 

  480.   ext.b_GL_ARB_instanced_arrays =
    481. 

  481.       extensions.find("GL_ARB_instanced_arrays ") != std::string::npos;
    482. 

  482.   ext.b_GL_ARB_map_buffer_range =
    483. 

  483.       extensions.find("GL_ARB_map_buffer_range ") != std::string::npos;
    484. 

  484.   ext.b_GL_ARB_occlusion_query =
    485. 

  485.       extensions.find("GL_ARB_occlusion_query ") != std::string::npos;
    486. 

  486.   ext.b_GL_ARB_robustness =
    487. 

  487.       extensions.find("GL_ARB_robustness ") != std::string::npos;
    488. 

  488.   ext.b_GL_ARB_sync = extensions.find("GL_ARB_sync ") != std::string::npos;
    489. 

  489.   ext.b_GL_ARB_texture_storage =
    490. 

  490.       extensions.find("GL_ARB_texture_storage ") != std::string::npos;
    491. 

  491.   ext.b_GL_ARB_timer_query =
    492. 

  492.       extensions.find("GL_ARB_timer_query ") != std::string::npos;
    493. 

  493.   ext.b_GL_ARB_vertex_array_object =
    494. 

  494.       extensions.find("GL_ARB_vertex_array_object ") != std::string::npos;
    495. 

  495.   ext.b_GL_CHROMIUM_gles_depth_binding_hack =
    496. 

  496.       extensions.find("GL_CHROMIUM_gles_depth_binding_hack ") !=
    497. 

  497.       std::string::npos;
    498. 

  498.   ext.b_GL_CHROMIUM_glgetstringi_hack =
    499. 

  499.       extensions.find("GL_CHROMIUM_glgetstringi_hack ") != std::string::npos;
    500. 

  500.   ext.b_GL_EXT_debug_marker =
    501. 

  501.       extensions.find("GL_EXT_debug_marker ") != std::string::npos;
    502. 

  502.   ext.b_GL_EXT_direct_state_access =
    503. 

  503.       extensions.find("GL_EXT_direct_state_access ") != std::string::npos;
    504. 

  504.   ext.b_GL_EXT_discard_framebuffer =
    505. 

  505.       extensions.find("GL_EXT_discard_framebuffer ") != std::string::npos;
    506. 

  506.   ext.b_GL_EXT_disjoint_timer_query =
    507. 

  507.       extensions.find("GL_EXT_disjoint_timer_query ") != std::string::npos;
    508. 

  508.   ext.b_GL_EXT_draw_buffers =
    509. 

  509.       extensions.find("GL_EXT_draw_buffers ") != std::string::npos;
    510. 

  510.   ext.b_GL_EXT_framebuffer_blit =
    511. 

  511.       extensions.find("GL_EXT_framebuffer_blit ") != std::string::npos;
    512. 

  512.   ext.b_GL_EXT_framebuffer_multisample =
    513. 

  513.       extensions.find("GL_EXT_framebuffer_multisample ") != std::string::npos;
    514. 

  514.   ext.b_GL_EXT_framebuffer_object =
    515. 

  515.       extensions.find("GL_EXT_framebuffer_object ") != std::string::npos;
    516. 

  516.   ext.b_GL_EXT_map_buffer_range =
    517. 

  517.       extensions.find("GL_EXT_map_buffer_range ") != std::string::npos;
    518. 

  518.   ext.b_GL_EXT_multisampled_render_to_texture =
    519. 

  519.       extensions.find("GL_EXT_multisampled_render_to_texture ") !=
    520. 

  520.       std::string::npos;
    521. 

  521.   ext.b_GL_EXT_occlusion_query_boolean =
    522. 

  522.       extensions.find("GL_EXT_occlusion_query_boolean ") != std::string::npos;
    523. 

  523.   ext.b_GL_EXT_robustness =
    524. 

  524.       extensions.find("GL_EXT_robustness ") != std::string::npos;
    525. 

  525.   ext.b_GL_EXT_texture_storage =
    526. 

  526.       extensions.find("GL_EXT_texture_storage ") != std::string::npos;
    527. 

  527.   ext.b_GL_EXT_timer_query =
    528. 

  528.       extensions.find("GL_EXT_timer_query ") != std::string::npos;
    529. 

  529.   ext.b_GL_IMG_multisampled_render_to_texture =
    530. 

  530.       extensions.find("GL_IMG_multisampled_render_to_texture ") !=
    531. 

  531.       std::string::npos;
    532. 

  532.   ext.b_GL_INTEL_framebuffer_CMAA =
    533. 

  533.       extensions.find("GL_INTEL_framebuffer_CMAA ") != std::string::npos;
    534. 

  534.   ext.b_GL_KHR_blend_equation_advanced =
    535. 

  535.       extensions.find("GL_KHR_blend_equation_advanced ") != std::string::npos;
    536. 

  536.   ext.b_GL_KHR_robustness =
    537. 

  537.       extensions.find("GL_KHR_robustness ") != std::string::npos;
    538. 

  538.   ext.b_GL_NV_blend_equation_advanced =
    539. 

  539.       extensions.find("GL_NV_blend_equation_advanced ") != std::string::npos;
    540. 

  540.   ext.b_GL_NV_fence = extensions.find("GL_NV_fence ") != std::string::npos;
    541. 

  541.   ext.b_GL_NV_path_rendering =
    542. 

  542.       extensions.find("GL_NV_path_rendering ") != std::string::npos;
    543. 

  543.   ext.b_GL_OES_EGL_image =
    544. 

  544.       extensions.find("GL_OES_EGL_image ") != std::string::npos;
    545. 

  545.   ext.b_GL_OES_get_program_binary =
    546. 

  546.       extensions.find("GL_OES_get_program_binary ") != std::string::npos;
    547. 

  547.   ext.b_GL_OES_mapbuffer =
    548. 

  548.       extensions.find("GL_OES_mapbuffer ") != std::string::npos;
    549. 

  549.   ext.b_GL_OES_vertex_array_object =
    550. 

  550.       extensions.find("GL_OES_vertex_array_object ") != std::string::npos;
    551. 

  551. 

  552.   debug_fn.glApplyFramebufferAttachmentCMAAINTELFn = 0;
    553. 

  553.   if (ext.b_GL_INTEL_framebuffer_CMAA) {
    554. 

  554.     fn.glApplyFramebufferAttachmentCMAAINTELFn =
    555. 

  555.         reinterpret_cast<glApplyFramebufferAttachmentCMAAINTELProc>(
    556. 

  556.             GetGLProcAddress("glApplyFramebufferAttachmentCMAAINTEL"));
    557. 

  557.     DCHECK(fn.glApplyFramebufferAttachmentCMAAINTELFn);
    558. 

  558.   }
    559. 

  559. 

  560.   debug_fn.glBeginQueryFn = 0;
    561. 

  561.   if (!ver->is_es || ver->IsAtLeastGLES(3u, 0u)) {
    562. 

  562.     fn.glBeginQueryFn =
    563. 

  563.         reinterpret_cast<glBeginQueryProc>(GetGLProcAddress("glBeginQuery"));
    564. 

  564.     DCHECK(fn.glBeginQueryFn);
    565. 

  565.   } else if (ext.b_GL_ARB_occlusion_query) {
    566. 

  566.     fn.glBeginQueryFn =
    567. 

  567.         reinterpret_cast<glBeginQueryProc>(GetGLProcAddress("glBeginQueryARB"));
    568. 

  568.     DCHECK(fn.glBeginQueryFn);
    569. 

  569.   } else if (ext.b_GL_EXT_disjoint_timer_query ||
    570. 

  570.              ext.b_GL_EXT_occlusion_query_boolean) {
    571. 

  571.     fn.glBeginQueryFn =
    572. 

  572.         reinterpret_cast<glBeginQueryProc>(GetGLProcAddress("glBeginQueryEXT"));
    573. 

  573.     DCHECK(fn.glBeginQueryFn);
    574. 

  574.   }
    575. 

  575. 

  576.   debug_fn.glBeginTransformFeedbackFn = 0;
    577. 

  577.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u)) {
    578. 

  578.     fn.glBeginTransformFeedbackFn =
    579. 

  579.         reinterpret_cast<glBeginTransformFeedbackProc>(
    580. 

  580.             GetGLProcAddress("glBeginTransformFeedback"));
    581. 

  581.     DCHECK(fn.glBeginTransformFeedbackFn);
    582. 

  582.   }
    583. 

  583. 

  584.   debug_fn.glBindBufferBaseFn = 0;
    585. 

  585.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u)) {
    586. 

  586.     fn.glBindBufferBaseFn = reinterpret_cast<glBindBufferBaseProc>(
    587. 

  587.         GetGLProcAddress("glBindBufferBase"));
    588. 

  588.     DCHECK(fn.glBindBufferBaseFn);
    589. 

  589.   }
    590. 

  590. 

  591.   debug_fn.glBindBufferRangeFn = 0;
    592. 

  592.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u)) {
    593. 

  593.     fn.glBindBufferRangeFn = reinterpret_cast<glBindBufferRangeProc>(
    594. 

  594.         GetGLProcAddress("glBindBufferRange"));
    595. 

  595.     DCHECK(fn.glBindBufferRangeFn);
    596. 

  596.   }
    597. 

  597. 

  598.   debug_fn.glBindFragDataLocationFn = 0;
    599. 

  599.   if (ver->IsAtLeastGL(3u, 0u)) {
    600. 

  600.     fn.glBindFragDataLocationFn = reinterpret_cast<glBindFragDataLocationProc>(
    601. 

  601.         GetGLProcAddress("glBindFragDataLocation"));
    602. 

  602.     DCHECK(fn.glBindFragDataLocationFn);
    603. 

  603.   }
    604. 

  604. 

  605.   debug_fn.glBindFragDataLocationIndexedFn = 0;
    606. 

  606.   if (ver->IsAtLeastGL(3u, 3u)) {
    607. 

  607.     fn.glBindFragDataLocationIndexedFn =
    608. 

  608.         reinterpret_cast<glBindFragDataLocationIndexedProc>(
    609. 

  609.             GetGLProcAddress("glBindFragDataLocationIndexed"));
    610. 

  610.     DCHECK(fn.glBindFragDataLocationIndexedFn);
    611. 

  611.   }
    612. 

  612. 

  613.   debug_fn.glBindFramebufferEXTFn = 0;
    614. 

  614.   if (ver->IsAtLeastGL(3u, 0u) || ver->is_es) {
    615. 

  615.     fn.glBindFramebufferEXTFn = reinterpret_cast<glBindFramebufferEXTProc>(
    616. 

  616.         GetGLProcAddress("glBindFramebuffer"));
    617. 

  617.     DCHECK(fn.glBindFramebufferEXTFn);
    618. 

  618.   } else if (ext.b_GL_EXT_framebuffer_object) {
    619. 

  619.     fn.glBindFramebufferEXTFn = reinterpret_cast<glBindFramebufferEXTProc>(
    620. 

  620.         GetGLProcAddress("glBindFramebufferEXT"));
    621. 

  621.     DCHECK(fn.glBindFramebufferEXTFn);
    622. 

  622.   }
    623. 

  623. 

  624.   debug_fn.glBindRenderbufferEXTFn = 0;
    625. 

  625.   if (ver->IsAtLeastGL(3u, 0u) || ver->is_es) {
    626. 

  626.     fn.glBindRenderbufferEXTFn = reinterpret_cast<glBindRenderbufferEXTProc>(
    627. 

  627.         GetGLProcAddress("glBindRenderbuffer"));
    628. 

  628.     DCHECK(fn.glBindRenderbufferEXTFn);
    629. 

  629.   } else if (ext.b_GL_EXT_framebuffer_object) {
    630. 

  630.     fn.glBindRenderbufferEXTFn = reinterpret_cast<glBindRenderbufferEXTProc>(
    631. 

  631.         GetGLProcAddress("glBindRenderbufferEXT"));
    632. 

  632.     DCHECK(fn.glBindRenderbufferEXTFn);
    633. 

  633.   }
    634. 

  634. 

  635.   debug_fn.glBindSamplerFn = 0;
    636. 

  636.   if (ver->IsAtLeastGL(3u, 3u) || ver->IsAtLeastGLES(3u, 0u)) {
    637. 

  637.     fn.glBindSamplerFn =
    638. 

  638.         reinterpret_cast<glBindSamplerProc>(GetGLProcAddress("glBindSampler"));
    639. 

  639.     DCHECK(fn.glBindSamplerFn);
    640. 

  640.   }
    641. 

  641. 

  642.   debug_fn.glBindTransformFeedbackFn = 0;
    643. 

  643.   if (ver->IsAtLeastGLES(3u, 0u) || ver->IsAtLeastGL(4u, 0u)) {
    644. 

  644.     fn.glBindTransformFeedbackFn =
    645. 

  645.         reinterpret_cast<glBindTransformFeedbackProc>(
    646. 

  646.             GetGLProcAddress("glBindTransformFeedback"));
    647. 

  647.     DCHECK(fn.glBindTransformFeedbackFn);
    648. 

  648.   }
    649. 

  649. 

  650.   debug_fn.glBindVertexArrayOESFn = 0;
    651. 

  651.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u) ||
    652. 

  652.       ext.b_GL_ARB_vertex_array_object) {
    653. 

  653.     fn.glBindVertexArrayOESFn = reinterpret_cast<glBindVertexArrayOESProc>(
    654. 

  654.         GetGLProcAddress("glBindVertexArray"));
    655. 

  655.     DCHECK(fn.glBindVertexArrayOESFn);
    656. 

  656.   } else if (ext.b_GL_OES_vertex_array_object) {
    657. 

  657.     fn.glBindVertexArrayOESFn = reinterpret_cast<glBindVertexArrayOESProc>(
    658. 

  658.         GetGLProcAddress("glBindVertexArrayOES"));
    659. 

  659.     DCHECK(fn.glBindVertexArrayOESFn);
    660. 

  660.   } else if (ext.b_GL_APPLE_vertex_array_object) {
    661. 

  661.     fn.glBindVertexArrayOESFn = reinterpret_cast<glBindVertexArrayOESProc>(
    662. 

  662.         GetGLProcAddress("glBindVertexArrayAPPLE"));
    663. 

  663.     DCHECK(fn.glBindVertexArrayOESFn);
    664. 

  664.   }
    665. 

  665. 

  666.   debug_fn.glBlendBarrierKHRFn = 0;
    667. 

  667.   if (ext.b_GL_NV_blend_equation_advanced) {
    668. 

  668.     fn.glBlendBarrierKHRFn = reinterpret_cast<glBlendBarrierKHRProc>(
    669. 

  669.         GetGLProcAddress("glBlendBarrierNV"));
    670. 

  670.     DCHECK(fn.glBlendBarrierKHRFn);
    671. 

  671.   } else if (ext.b_GL_KHR_blend_equation_advanced) {
    672. 

  672.     fn.glBlendBarrierKHRFn = reinterpret_cast<glBlendBarrierKHRProc>(
    673. 

  673.         GetGLProcAddress("glBlendBarrierKHR"));
    674. 

  674.     DCHECK(fn.glBlendBarrierKHRFn);
    675. 

  675.   }
    676. 

  676. 

  677.   debug_fn.glBlitFramebufferFn = 0;
    678. 

  678.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u)) {
    679. 

  679.     fn.glBlitFramebufferFn = reinterpret_cast<glBlitFramebufferProc>(
    680. 

  680.         GetGLProcAddress("glBlitFramebuffer"));
    681. 

  681.     DCHECK(fn.glBlitFramebufferFn);
    682. 

  682.   }
    683. 

  683. 

  684.   debug_fn.glBlitFramebufferANGLEFn = 0;
    685. 

  685.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u)) {
    686. 

  686.     fn.glBlitFramebufferANGLEFn = reinterpret_cast<glBlitFramebufferANGLEProc>(
    687. 

  687.         GetGLProcAddress("glBlitFramebuffer"));
    688. 

  688.     DCHECK(fn.glBlitFramebufferANGLEFn);
    689. 

  689.   } else if (ext.b_GL_ANGLE_framebuffer_blit) {
    690. 

  690.     fn.glBlitFramebufferANGLEFn = reinterpret_cast<glBlitFramebufferANGLEProc>(
    691. 

  691.         GetGLProcAddress("glBlitFramebufferANGLE"));
    692. 

  692.     DCHECK(fn.glBlitFramebufferANGLEFn);
    693. 

  693.   }
    694. 

  694. 

  695.   debug_fn.glBlitFramebufferEXTFn = 0;
    696. 

  696.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u)) {
    697. 

  697.     fn.glBlitFramebufferEXTFn = reinterpret_cast<glBlitFramebufferEXTProc>(
    698. 

  698.         GetGLProcAddress("glBlitFramebuffer"));
    699. 

  699.     DCHECK(fn.glBlitFramebufferEXTFn);
    700. 

  700.   } else if (ext.b_GL_EXT_framebuffer_blit) {
    701. 

  701.     fn.glBlitFramebufferEXTFn = reinterpret_cast<glBlitFramebufferEXTProc>(
    702. 

  702.         GetGLProcAddress("glBlitFramebufferEXT"));
    703. 

  703.     DCHECK(fn.glBlitFramebufferEXTFn);
    704. 

  704.   }
    705. 

  705. 

  706.   debug_fn.glCheckFramebufferStatusEXTFn = 0;
    707. 

  707.   if (ver->IsAtLeastGL(3u, 0u) || ver->is_es) {
    708. 

  708.     fn.glCheckFramebufferStatusEXTFn =
    709. 

  709.         reinterpret_cast<glCheckFramebufferStatusEXTProc>(
    710. 

  710.             GetGLProcAddress("glCheckFramebufferStatus"));
    711. 

  711.     DCHECK(fn.glCheckFramebufferStatusEXTFn);
    712. 

  712.   } else if (ext.b_GL_EXT_framebuffer_object) {
    713. 

  713.     fn.glCheckFramebufferStatusEXTFn =
    714. 

  714.         reinterpret_cast<glCheckFramebufferStatusEXTProc>(
    715. 

  715.             GetGLProcAddress("glCheckFramebufferStatusEXT"));
    716. 

  716.     DCHECK(fn.glCheckFramebufferStatusEXTFn);
    717. 

  717.   }
    718. 

  718. 

  719.   debug_fn.glClearBufferfiFn = 0;
    720. 

  720.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u)) {
    721. 

  721.     fn.glClearBufferfiFn = reinterpret_cast<glClearBufferfiProc>(
    722. 

  722.         GetGLProcAddress("glClearBufferfi"));
    723. 

  723.     DCHECK(fn.glClearBufferfiFn);
    724. 

  724.   }
    725. 

  725. 

  726.   debug_fn.glClearBufferfvFn = 0;
    727. 

  727.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u)) {
    728. 

  728.     fn.glClearBufferfvFn = reinterpret_cast<glClearBufferfvProc>(
    729. 

  729.         GetGLProcAddress("glClearBufferfv"));
    730. 

  730.     DCHECK(fn.glClearBufferfvFn);
    731. 

  731.   }
    732. 

  732. 

  733.   debug_fn.glClearBufferivFn = 0;
    734. 

  734.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u)) {
    735. 

  735.     fn.glClearBufferivFn = reinterpret_cast<glClearBufferivProc>(
    736. 

  736.         GetGLProcAddress("glClearBufferiv"));
    737. 

  737.     DCHECK(fn.glClearBufferivFn);
    738. 

  738.   }
    739. 

  739. 

  740.   debug_fn.glClearBufferuivFn = 0;
    741. 

  741.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u)) {
    742. 

  742.     fn.glClearBufferuivFn = reinterpret_cast<glClearBufferuivProc>(
    743. 

  743.         GetGLProcAddress("glClearBufferuiv"));
    744. 

  744.     DCHECK(fn.glClearBufferuivFn);
    745. 

  745.   }
    746. 

  746. 

  747.   debug_fn.glClearDepthfFn = 0;
    748. 

  748.   if (ver->IsAtLeastGL(4u, 1u) || ver->is_es) {
    749. 

  749.     fn.glClearDepthfFn =
    750. 

  750.         reinterpret_cast<glClearDepthfProc>(GetGLProcAddress("glClearDepthf"));
    751. 

  751.     DCHECK(fn.glClearDepthfFn);
    752. 

  752.   }
    753. 

  753. 

  754.   debug_fn.glClientWaitSyncFn = 0;
    755. 

  755.   if (ver->IsAtLeastGL(3u, 2u) || ver->IsAtLeastGLES(3u, 0u) ||
    756. 

  756.       ext.b_GL_ARB_sync) {
    757. 

  757.     fn.glClientWaitSyncFn = reinterpret_cast<glClientWaitSyncProc>(
    758. 

  758.         GetGLProcAddress("glClientWaitSync"));
    759. 

  759.     DCHECK(fn.glClientWaitSyncFn);
    760. 

  760.   }
    761. 

  761. 

  762.   debug_fn.glCompressedTexImage3DFn = 0;
    763. 

  763.   if (!ver->is_es || ver->IsAtLeastGLES(3u, 0u)) {
    764. 

  764.     fn.glCompressedTexImage3DFn = reinterpret_cast<glCompressedTexImage3DProc>(
    765. 

  765.         GetGLProcAddress("glCompressedTexImage3D"));
    766. 

  766.     DCHECK(fn.glCompressedTexImage3DFn);
    767. 

  767.   }
    768. 

  768. 

  769.   debug_fn.glCompressedTexSubImage3DFn = 0;
    770. 

  770.   if (!ver->is_es || ver->IsAtLeastGLES(3u, 0u)) {
    771. 

  771.     fn.glCompressedTexSubImage3DFn =
    772. 

  772.         reinterpret_cast<glCompressedTexSubImage3DProc>(
    773. 

  773.             GetGLProcAddress("glCompressedTexSubImage3D"));
    774. 

  774.     DCHECK(fn.glCompressedTexSubImage3DFn);
    775. 

  775.   }
    776. 

  776. 

  777.   debug_fn.glCopyBufferSubDataFn = 0;
    778. 

  778.   if (ver->IsAtLeastGLES(3u, 0u) || ver->IsAtLeastGL(3u, 1u)) {
    779. 

  779.     fn.glCopyBufferSubDataFn = reinterpret_cast<glCopyBufferSubDataProc>(
    780. 

  780.         GetGLProcAddress("glCopyBufferSubData"));
    781. 

  781.     DCHECK(fn.glCopyBufferSubDataFn);
    782. 

  782.   }
    783. 

  783. 

  784.   debug_fn.glCopyTexSubImage3DFn = 0;
    785. 

  785.   if (!ver->is_es || ver->IsAtLeastGLES(3u, 0u)) {
    786. 

  786.     fn.glCopyTexSubImage3DFn = reinterpret_cast<glCopyTexSubImage3DProc>(
    787. 

  787.         GetGLProcAddress("glCopyTexSubImage3D"));
    788. 

  788.     DCHECK(fn.glCopyTexSubImage3DFn);
    789. 

  789.   }
    790. 

  790. 

  791.   debug_fn.glCoverFillPathNVFn = 0;
    792. 

  792.   if (ext.b_GL_NV_path_rendering) {
    793. 

  793.     fn.glCoverFillPathNVFn = reinterpret_cast<glCoverFillPathNVProc>(
    794. 

  794.         GetGLProcAddress("glCoverFillPathNV"));
    795. 

  795.     DCHECK(fn.glCoverFillPathNVFn);
    796. 

  796.   }
    797. 

  797. 

  798.   debug_fn.glCoverStrokePathNVFn = 0;
    799. 

  799.   if (ext.b_GL_NV_path_rendering) {
    800. 

  800.     fn.glCoverStrokePathNVFn = reinterpret_cast<glCoverStrokePathNVProc>(
    801. 

  801.         GetGLProcAddress("glCoverStrokePathNV"));
    802. 

  802.     DCHECK(fn.glCoverStrokePathNVFn);
    803. 

  803.   }
    804. 

  804. 

  805.   debug_fn.glDeleteFencesAPPLEFn = 0;
    806. 

  806.   if (ext.b_GL_APPLE_fence) {
    807. 

  807.     fn.glDeleteFencesAPPLEFn = reinterpret_cast<glDeleteFencesAPPLEProc>(
    808. 

  808.         GetGLProcAddress("glDeleteFencesAPPLE"));
    809. 

  809.     DCHECK(fn.glDeleteFencesAPPLEFn);
    810. 

  810.   }
    811. 

  811. 

  812.   debug_fn.glDeleteFencesNVFn = 0;
    813. 

  813.   if (ext.b_GL_NV_fence) {
    814. 

  814.     fn.glDeleteFencesNVFn = reinterpret_cast<glDeleteFencesNVProc>(
    815. 

  815.         GetGLProcAddress("glDeleteFencesNV"));
    816. 

  816.     DCHECK(fn.glDeleteFencesNVFn);
    817. 

  817.   }
    818. 

  818. 

  819.   debug_fn.glDeleteFramebuffersEXTFn = 0;
    820. 

  820.   if (ver->IsAtLeastGL(3u, 0u) || ver->is_es) {
    821. 

  821.     fn.glDeleteFramebuffersEXTFn =
    822. 

  822.         reinterpret_cast<glDeleteFramebuffersEXTProc>(
    823. 

  823.             GetGLProcAddress("glDeleteFramebuffers"));
    824. 

  824.     DCHECK(fn.glDeleteFramebuffersEXTFn);
    825. 

  825.   } else if (ext.b_GL_EXT_framebuffer_object) {
    826. 

  826.     fn.glDeleteFramebuffersEXTFn =
    827. 

  827.         reinterpret_cast<glDeleteFramebuffersEXTProc>(
    828. 

  828.             GetGLProcAddress("glDeleteFramebuffersEXT"));
    829. 

  829.     DCHECK(fn.glDeleteFramebuffersEXTFn);
    830. 

  830.   }
    831. 

  831. 

  832.   debug_fn.glDeletePathsNVFn = 0;
    833. 

  833.   if (ext.b_GL_NV_path_rendering) {
    834. 

  834.     fn.glDeletePathsNVFn = reinterpret_cast<glDeletePathsNVProc>(
    835. 

  835.         GetGLProcAddress("glDeletePathsNV"));
    836. 

  836.     DCHECK(fn.glDeletePathsNVFn);
    837. 

  837.   }
    838. 

  838. 

  839.   debug_fn.glDeleteQueriesFn = 0;
    840. 

  840.   if (!ver->is_es || ver->IsAtLeastGLES(3u, 0u)) {
    841. 

  841.     fn.glDeleteQueriesFn = reinterpret_cast<glDeleteQueriesProc>(
    842. 

  842.         GetGLProcAddress("glDeleteQueries"));
    843. 

  843.     DCHECK(fn.glDeleteQueriesFn);
    844. 

  844.   } else if (ext.b_GL_ARB_occlusion_query) {
    845. 

  845.     fn.glDeleteQueriesFn = reinterpret_cast<glDeleteQueriesProc>(
    846. 

  846.         GetGLProcAddress("glDeleteQueriesARB"));
    847. 

  847.     DCHECK(fn.glDeleteQueriesFn);
    848. 

  848.   } else if (ext.b_GL_EXT_disjoint_timer_query ||
    849. 

  849.              ext.b_GL_EXT_occlusion_query_boolean) {
    850. 

  850.     fn.glDeleteQueriesFn = reinterpret_cast<glDeleteQueriesProc>(
    851. 

  851.         GetGLProcAddress("glDeleteQueriesEXT"));
    852. 

  852.     DCHECK(fn.glDeleteQueriesFn);
    853. 

  853.   }
    854. 

  854. 

  855.   debug_fn.glDeleteRenderbuffersEXTFn = 0;
    856. 

  856.   if (ver->IsAtLeastGL(3u, 0u) || ver->is_es) {
    857. 

  857.     fn.glDeleteRenderbuffersEXTFn =
    858. 

  858.         reinterpret_cast<glDeleteRenderbuffersEXTProc>(
    859. 

  859.             GetGLProcAddress("glDeleteRenderbuffers"));
    860. 

  860.     DCHECK(fn.glDeleteRenderbuffersEXTFn);
    861. 

  861.   } else if (ext.b_GL_EXT_framebuffer_object) {
    862. 

  862.     fn.glDeleteRenderbuffersEXTFn =
    863. 

  863.         reinterpret_cast<glDeleteRenderbuffersEXTProc>(
    864. 

  864.             GetGLProcAddress("glDeleteRenderbuffersEXT"));
    865. 

  865.     DCHECK(fn.glDeleteRenderbuffersEXTFn);
    866. 

  866.   }
    867. 

  867. 

  868.   debug_fn.glDeleteSamplersFn = 0;
    869. 

  869.   if (ver->IsAtLeastGL(3u, 3u) || ver->IsAtLeastGLES(3u, 0u)) {
    870. 

  870.     fn.glDeleteSamplersFn = reinterpret_cast<glDeleteSamplersProc>(
    871. 

  871.         GetGLProcAddress("glDeleteSamplers"));
    872. 

  872.     DCHECK(fn.glDeleteSamplersFn);
    873. 

  873.   }
    874. 

  874. 

  875.   debug_fn.glDeleteSyncFn = 0;
    876. 

  876.   if (ver->IsAtLeastGL(3u, 2u) || ver->IsAtLeastGLES(3u, 0u) ||
    877. 

  877.       ext.b_GL_ARB_sync) {
    878. 

  878.     fn.glDeleteSyncFn =
    879. 

  879.         reinterpret_cast<glDeleteSyncProc>(GetGLProcAddress("glDeleteSync"));
    880. 

  880.     DCHECK(fn.glDeleteSyncFn);
    881. 

  881.   }
    882. 

  882. 

  883.   debug_fn.glDeleteTransformFeedbacksFn = 0;
    884. 

  884.   if (ver->IsAtLeastGLES(3u, 0u) || ver->IsAtLeastGL(4u, 0u)) {
    885. 

  885.     fn.glDeleteTransformFeedbacksFn =
    886. 

  886.         reinterpret_cast<glDeleteTransformFeedbacksProc>(
    887. 

  887.             GetGLProcAddress("glDeleteTransformFeedbacks"));
    888. 

  888.     DCHECK(fn.glDeleteTransformFeedbacksFn);
    889. 

  889.   }
    890. 

  890. 

  891.   debug_fn.glDeleteVertexArraysOESFn = 0;
    892. 

  892.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u) ||
    893. 

  893.       ext.b_GL_ARB_vertex_array_object) {
    894. 

  894.     fn.glDeleteVertexArraysOESFn =
    895. 

  895.         reinterpret_cast<glDeleteVertexArraysOESProc>(
    896. 

  896.             GetGLProcAddress("glDeleteVertexArrays"));
    897. 

  897.     DCHECK(fn.glDeleteVertexArraysOESFn);
    898. 

  898.   } else if (ext.b_GL_OES_vertex_array_object) {
    899. 

  899.     fn.glDeleteVertexArraysOESFn =
    900. 

  900.         reinterpret_cast<glDeleteVertexArraysOESProc>(
    901. 

  901.             GetGLProcAddress("glDeleteVertexArraysOES"));
    902. 

  902.     DCHECK(fn.glDeleteVertexArraysOESFn);
    903. 

  903.   } else if (ext.b_GL_APPLE_vertex_array_object) {
    904. 

  904.     fn.glDeleteVertexArraysOESFn =
    905. 

  905.         reinterpret_cast<glDeleteVertexArraysOESProc>(
    906. 

  906.             GetGLProcAddress("glDeleteVertexArraysAPPLE"));
    907. 

  907.     DCHECK(fn.glDeleteVertexArraysOESFn);
    908. 

  908.   }
    909. 

  909. 

  910.   debug_fn.glDepthRangefFn = 0;
    911. 

  911.   if (ver->IsAtLeastGL(4u, 1u) || ver->is_es) {
    912. 

  912.     fn.glDepthRangefFn =
    913. 

  913.         reinterpret_cast<glDepthRangefProc>(GetGLProcAddress("glDepthRangef"));
    914. 

  914.     DCHECK(fn.glDepthRangefFn);
    915. 

  915.   }
    916. 

  916. 

  917.   debug_fn.glDiscardFramebufferEXTFn = 0;
    918. 

  918.   if (ext.b_GL_EXT_discard_framebuffer) {
    919. 

  919.     fn.glDiscardFramebufferEXTFn =
    920. 

  920.         reinterpret_cast<glDiscardFramebufferEXTProc>(
    921. 

  921.             GetGLProcAddress("glDiscardFramebufferEXT"));
    922. 

  922.     DCHECK(fn.glDiscardFramebufferEXTFn);
    923. 

  923.   }
    924. 

  924. 

  925.   debug_fn.glDrawArraysInstancedANGLEFn = 0;
    926. 

  926.   if (ver->IsAtLeastGLES(3u, 0u) || ver->IsAtLeastGL(3u, 1u)) {
    927. 

  927.     fn.glDrawArraysInstancedANGLEFn =
    928. 

  928.         reinterpret_cast<glDrawArraysInstancedANGLEProc>(
    929. 

  929.             GetGLProcAddress("glDrawArraysInstanced"));
    930. 

  930.     DCHECK(fn.glDrawArraysInstancedANGLEFn);
    931. 

  931.   } else if (ext.b_GL_ARB_draw_instanced) {
    932. 

  932.     fn.glDrawArraysInstancedANGLEFn =
    933. 

  933.         reinterpret_cast<glDrawArraysInstancedANGLEProc>(
    934. 

  934.             GetGLProcAddress("glDrawArraysInstancedARB"));
    935. 

  935.     DCHECK(fn.glDrawArraysInstancedANGLEFn);
    936. 

  936.   } else if (ext.b_GL_ANGLE_instanced_arrays) {
    937. 

  937.     fn.glDrawArraysInstancedANGLEFn =
    938. 

  938.         reinterpret_cast<glDrawArraysInstancedANGLEProc>(
    939. 

  939.             GetGLProcAddress("glDrawArraysInstancedANGLE"));
    940. 

  940.     DCHECK(fn.glDrawArraysInstancedANGLEFn);
    941. 

  941.   }
    942. 

  942. 

  943.   debug_fn.glDrawBufferFn = 0;
    944. 

  944.   if (!ver->is_es) {
    945. 

  945.     fn.glDrawBufferFn =
    946. 

  946.         reinterpret_cast<glDrawBufferProc>(GetGLProcAddress("glDrawBuffer"));
    947. 

  947.     DCHECK(fn.glDrawBufferFn);
    948. 

  948.   }
    949. 

  949. 

  950.   debug_fn.glDrawBuffersARBFn = 0;
    951. 

  951.   if (!ver->is_es || ver->IsAtLeastGLES(3u, 0u)) {
    952. 

  952.     fn.glDrawBuffersARBFn = reinterpret_cast<glDrawBuffersARBProc>(
    953. 

  953.         GetGLProcAddress("glDrawBuffers"));
    954. 

  954.     DCHECK(fn.glDrawBuffersARBFn);
    955. 

  955.   } else if (ext.b_GL_ARB_draw_buffers) {
    956. 

  956.     fn.glDrawBuffersARBFn = reinterpret_cast<glDrawBuffersARBProc>(
    957. 

  957.         GetGLProcAddress("glDrawBuffersARB"));
    958. 

  958.     DCHECK(fn.glDrawBuffersARBFn);
    959. 

  959.   } else if (ext.b_GL_EXT_draw_buffers) {
    960. 

  960.     fn.glDrawBuffersARBFn = reinterpret_cast<glDrawBuffersARBProc>(
    961. 

  961.         GetGLProcAddress("glDrawBuffersEXT"));
    962. 

  962.     DCHECK(fn.glDrawBuffersARBFn);
    963. 

  963.   }
    964. 

  964. 

  965.   debug_fn.glDrawElementsInstancedANGLEFn = 0;
    966. 

  966.   if (ver->IsAtLeastGLES(3u, 0u) || ver->IsAtLeastGL(3u, 1u)) {
    967. 

  967.     fn.glDrawElementsInstancedANGLEFn =
    968. 

  968.         reinterpret_cast<glDrawElementsInstancedANGLEProc>(
    969. 

  969.             GetGLProcAddress("glDrawElementsInstanced"));
    970. 

  970.     DCHECK(fn.glDrawElementsInstancedANGLEFn);
    971. 

  971.   } else if (ext.b_GL_ARB_draw_instanced) {
    972. 

  972.     fn.glDrawElementsInstancedANGLEFn =
    973. 

  973.         reinterpret_cast<glDrawElementsInstancedANGLEProc>(
    974. 

  974.             GetGLProcAddress("glDrawElementsInstancedARB"));
    975. 

  975.     DCHECK(fn.glDrawElementsInstancedANGLEFn);
    976. 

  976.   } else if (ext.b_GL_ANGLE_instanced_arrays) {
    977. 

  977.     fn.glDrawElementsInstancedANGLEFn =
    978. 

  978.         reinterpret_cast<glDrawElementsInstancedANGLEProc>(
    979. 

  979.             GetGLProcAddress("glDrawElementsInstancedANGLE"));
    980. 

  980.     DCHECK(fn.glDrawElementsInstancedANGLEFn);
    981. 

  981.   }
    982. 

  982. 

  983.   debug_fn.glDrawRangeElementsFn = 0;
    984. 

  984.   if (!ver->is_es || ver->IsAtLeastGLES(3u, 0u)) {
    985. 

  985.     fn.glDrawRangeElementsFn = reinterpret_cast<glDrawRangeElementsProc>(
    986. 

  986.         GetGLProcAddress("glDrawRangeElements"));
    987. 

  987.     DCHECK(fn.glDrawRangeElementsFn);
    988. 

  988.   }
    989. 

  989. 

  990.   debug_fn.glEGLImageTargetRenderbufferStorageOESFn = 0;
    991. 

  991.   if (ext.b_GL_OES_EGL_image) {
    992. 

  992.     fn.glEGLImageTargetRenderbufferStorageOESFn =
    993. 

  993.         reinterpret_cast<glEGLImageTargetRenderbufferStorageOESProc>(
    994. 

  994.             GetGLProcAddress("glEGLImageTargetRenderbufferStorageOES"));
    995. 

  995.     DCHECK(fn.glEGLImageTargetRenderbufferStorageOESFn);
    996. 

  996.   }
    997. 

  997. 

  998.   debug_fn.glEGLImageTargetTexture2DOESFn = 0;
    999. 

  999.   if (ext.b_GL_OES_EGL_image) {
    1000. 

  1000.     fn.glEGLImageTargetTexture2DOESFn =
    1001. 

  1001.         reinterpret_cast<glEGLImageTargetTexture2DOESProc>(
    1002. 

  1002.             GetGLProcAddress("glEGLImageTargetTexture2DOES"));
    1003. 

  1003.     DCHECK(fn.glEGLImageTargetTexture2DOESFn);
    1004. 

  1004.   }
    1005. 

  1005. 

  1006.   debug_fn.glEndQueryFn = 0;
    1007. 

  1007.   if (!ver->is_es || ver->IsAtLeastGLES(3u, 0u)) {
    1008. 

  1008.     fn.glEndQueryFn =
    1009. 

  1009.         reinterpret_cast<glEndQueryProc>(GetGLProcAddress("glEndQuery"));
    1010. 

  1010.     DCHECK(fn.glEndQueryFn);
    1011. 

  1011.   } else if (ext.b_GL_ARB_occlusion_query) {
    1012. 

  1012.     fn.glEndQueryFn =
    1013. 

  1013.         reinterpret_cast<glEndQueryProc>(GetGLProcAddress("glEndQueryARB"));
    1014. 

  1014.     DCHECK(fn.glEndQueryFn);
    1015. 

  1015.   } else if (ext.b_GL_EXT_disjoint_timer_query ||
    1016. 

  1016.              ext.b_GL_EXT_occlusion_query_boolean) {
    1017. 

  1017.     fn.glEndQueryFn =
    1018. 

  1018.         reinterpret_cast<glEndQueryProc>(GetGLProcAddress("glEndQueryEXT"));
    1019. 

  1019.     DCHECK(fn.glEndQueryFn);
    1020. 

  1020.   }
    1021. 

  1021. 

  1022.   debug_fn.glEndTransformFeedbackFn = 0;
    1023. 

  1023.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u)) {
    1024. 

  1024.     fn.glEndTransformFeedbackFn = reinterpret_cast<glEndTransformFeedbackProc>(
    1025. 

  1025.         GetGLProcAddress("glEndTransformFeedback"));
    1026. 

  1026.     DCHECK(fn.glEndTransformFeedbackFn);
    1027. 

  1027.   }
    1028. 

  1028. 

  1029.   debug_fn.glFenceSyncFn = 0;
    1030. 

  1030.   if (ver->IsAtLeastGL(3u, 2u) || ver->IsAtLeastGLES(3u, 0u) ||
    1031. 

  1031.       ext.b_GL_ARB_sync) {
    1032. 

  1032.     fn.glFenceSyncFn =
    1033. 

  1033.         reinterpret_cast<glFenceSyncProc>(GetGLProcAddress("glFenceSync"));
    1034. 

  1034.     DCHECK(fn.glFenceSyncFn);
    1035. 

  1035.   }
    1036. 

  1036. 

  1037.   debug_fn.glFinishFenceAPPLEFn = 0;
    1038. 

  1038.   if (ext.b_GL_APPLE_fence) {
    1039. 

  1039.     fn.glFinishFenceAPPLEFn = reinterpret_cast<glFinishFenceAPPLEProc>(
    1040. 

  1040.         GetGLProcAddress("glFinishFenceAPPLE"));
    1041. 

  1041.     DCHECK(fn.glFinishFenceAPPLEFn);
    1042. 

  1042.   }
    1043. 

  1043. 

  1044.   debug_fn.glFinishFenceNVFn = 0;
    1045. 

  1045.   if (ext.b_GL_NV_fence) {
    1046. 

  1046.     fn.glFinishFenceNVFn = reinterpret_cast<glFinishFenceNVProc>(
    1047. 

  1047.         GetGLProcAddress("glFinishFenceNV"));
    1048. 

  1048.     DCHECK(fn.glFinishFenceNVFn);
    1049. 

  1049.   }
    1050. 

  1050. 

  1051.   debug_fn.glFlushMappedBufferRangeFn = 0;
    1052. 

  1052.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u)) {
    1053. 

  1053.     fn.glFlushMappedBufferRangeFn =
    1054. 

  1054.         reinterpret_cast<glFlushMappedBufferRangeProc>(
    1055. 

  1055.             GetGLProcAddress("glFlushMappedBufferRange"));
    1056. 

  1056.     DCHECK(fn.glFlushMappedBufferRangeFn);
    1057. 

  1057.   }
    1058. 

  1058. 

  1059.   debug_fn.glFramebufferRenderbufferEXTFn = 0;
    1060. 

  1060.   if (ver->IsAtLeastGL(3u, 0u) || ver->is_es) {
    1061. 

  1061.     fn.glFramebufferRenderbufferEXTFn =
    1062. 

  1062.         reinterpret_cast<glFramebufferRenderbufferEXTProc>(
    1063. 

  1063.             GetGLProcAddress("glFramebufferRenderbuffer"));
    1064. 

  1064.     DCHECK(fn.glFramebufferRenderbufferEXTFn);
    1065. 

  1065.   } else if (ext.b_GL_EXT_framebuffer_object) {
    1066. 

  1066.     fn.glFramebufferRenderbufferEXTFn =
    1067. 

  1067.         reinterpret_cast<glFramebufferRenderbufferEXTProc>(
    1068. 

  1068.             GetGLProcAddress("glFramebufferRenderbufferEXT"));
    1069. 

  1069.     DCHECK(fn.glFramebufferRenderbufferEXTFn);
    1070. 

  1070.   }
    1071. 

  1071. 

  1072.   debug_fn.glFramebufferTexture2DEXTFn = 0;
    1073. 

  1073.   if (ver->IsAtLeastGL(3u, 0u) || ver->is_es) {
    1074. 

  1074.     fn.glFramebufferTexture2DEXTFn =
    1075. 

  1075.         reinterpret_cast<glFramebufferTexture2DEXTProc>(
    1076. 

  1076.             GetGLProcAddress("glFramebufferTexture2D"));
    1077. 

  1077.     DCHECK(fn.glFramebufferTexture2DEXTFn);
    1078. 

  1078.   } else if (ext.b_GL_EXT_framebuffer_object) {
    1079. 

  1079.     fn.glFramebufferTexture2DEXTFn =
    1080. 

  1080.         reinterpret_cast<glFramebufferTexture2DEXTProc>(
    1081. 

  1081.             GetGLProcAddress("glFramebufferTexture2DEXT"));
    1082. 

  1082.     DCHECK(fn.glFramebufferTexture2DEXTFn);
    1083. 

  1083.   }
    1084. 

  1084. 

  1085.   debug_fn.glFramebufferTexture2DMultisampleEXTFn = 0;
    1086. 

  1086.   if (ext.b_GL_EXT_multisampled_render_to_texture) {
    1087. 

  1087.     fn.glFramebufferTexture2DMultisampleEXTFn =
    1088. 

  1088.         reinterpret_cast<glFramebufferTexture2DMultisampleEXTProc>(
    1089. 

  1089.             GetGLProcAddress("glFramebufferTexture2DMultisampleEXT"));
    1090. 

  1090.     DCHECK(fn.glFramebufferTexture2DMultisampleEXTFn);
    1091. 

  1091.   }
    1092. 

  1092. 

  1093.   debug_fn.glFramebufferTexture2DMultisampleIMGFn = 0;
    1094. 

  1094.   if (ext.b_GL_IMG_multisampled_render_to_texture) {
    1095. 

  1095.     fn.glFramebufferTexture2DMultisampleIMGFn =
    1096. 

  1096.         reinterpret_cast<glFramebufferTexture2DMultisampleIMGProc>(
    1097. 

  1097.             GetGLProcAddress("glFramebufferTexture2DMultisampleIMG"));
    1098. 

  1098.     DCHECK(fn.glFramebufferTexture2DMultisampleIMGFn);
    1099. 

  1099.   }
    1100. 

  1100. 

  1101.   debug_fn.glFramebufferTextureLayerFn = 0;
    1102. 

  1102.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u)) {
    1103. 

  1103.     fn.glFramebufferTextureLayerFn =
    1104. 

  1104.         reinterpret_cast<glFramebufferTextureLayerProc>(
    1105. 

  1105.             GetGLProcAddress("glFramebufferTextureLayer"));
    1106. 

  1106.     DCHECK(fn.glFramebufferTextureLayerFn);
    1107. 

  1107.   }
    1108. 

  1108. 

  1109.   debug_fn.glGenerateMipmapEXTFn = 0;
    1110. 

  1110.   if (ver->IsAtLeastGL(3u, 0u) || ver->is_es) {
    1111. 

  1111.     fn.glGenerateMipmapEXTFn = reinterpret_cast<glGenerateMipmapEXTProc>(
    1112. 

  1112.         GetGLProcAddress("glGenerateMipmap"));
    1113. 

  1113.     DCHECK(fn.glGenerateMipmapEXTFn);
    1114. 

  1114.   } else if (ext.b_GL_EXT_framebuffer_object) {
    1115. 

  1115.     fn.glGenerateMipmapEXTFn = reinterpret_cast<glGenerateMipmapEXTProc>(
    1116. 

  1116.         GetGLProcAddress("glGenerateMipmapEXT"));
    1117. 

  1117.     DCHECK(fn.glGenerateMipmapEXTFn);
    1118. 

  1118.   }
    1119. 

  1119. 

  1120.   debug_fn.glGenFencesAPPLEFn = 0;
    1121. 

  1121.   if (ext.b_GL_APPLE_fence) {
    1122. 

  1122.     fn.glGenFencesAPPLEFn = reinterpret_cast<glGenFencesAPPLEProc>(
    1123. 

  1123.         GetGLProcAddress("glGenFencesAPPLE"));
    1124. 

  1124.     DCHECK(fn.glGenFencesAPPLEFn);
    1125. 

  1125.   }
    1126. 

  1126. 

  1127.   debug_fn.glGenFencesNVFn = 0;
    1128. 

  1128.   if (ext.b_GL_NV_fence) {
    1129. 

  1129.     fn.glGenFencesNVFn =
    1130. 

  1130.         reinterpret_cast<glGenFencesNVProc>(GetGLProcAddress("glGenFencesNV"));
    1131. 

  1131.     DCHECK(fn.glGenFencesNVFn);
    1132. 

  1132.   }
    1133. 

  1133. 

  1134.   debug_fn.glGenFramebuffersEXTFn = 0;
    1135. 

  1135.   if (ver->IsAtLeastGL(3u, 0u) || ver->is_es) {
    1136. 

  1136.     fn.glGenFramebuffersEXTFn = reinterpret_cast<glGenFramebuffersEXTProc>(
    1137. 

  1137.         GetGLProcAddress("glGenFramebuffers"));
    1138. 

  1138.     DCHECK(fn.glGenFramebuffersEXTFn);
    1139. 

  1139.   } else if (ext.b_GL_EXT_framebuffer_object) {
    1140. 

  1140.     fn.glGenFramebuffersEXTFn = reinterpret_cast<glGenFramebuffersEXTProc>(
    1141. 

  1141.         GetGLProcAddress("glGenFramebuffersEXT"));
    1142. 

  1142.     DCHECK(fn.glGenFramebuffersEXTFn);
    1143. 

  1143.   }
    1144. 

  1144. 

  1145.   debug_fn.glGenPathsNVFn = 0;
    1146. 

  1146.   if (ext.b_GL_NV_path_rendering) {
    1147. 

  1147.     fn.glGenPathsNVFn =
    1148. 

  1148.         reinterpret_cast<glGenPathsNVProc>(GetGLProcAddress("glGenPathsNV"));
    1149. 

  1149.     DCHECK(fn.glGenPathsNVFn);
    1150. 

  1150.   }
    1151. 

  1151. 

  1152.   debug_fn.glGenQueriesFn = 0;
    1153. 

  1153.   if (!ver->is_es || ver->IsAtLeastGLES(3u, 0u)) {
    1154. 

  1154.     fn.glGenQueriesFn =
    1155. 

  1155.         reinterpret_cast<glGenQueriesProc>(GetGLProcAddress("glGenQueries"));
    1156. 

  1156.     DCHECK(fn.glGenQueriesFn);
    1157. 

  1157.   } else if (ext.b_GL_ARB_occlusion_query) {
    1158. 

  1158.     fn.glGenQueriesFn =
    1159. 

  1159.         reinterpret_cast<glGenQueriesProc>(GetGLProcAddress("glGenQueriesARB"));
    1160. 

  1160.     DCHECK(fn.glGenQueriesFn);
    1161. 

  1161.   } else if (ext.b_GL_EXT_disjoint_timer_query ||
    1162. 

  1162.              ext.b_GL_EXT_occlusion_query_boolean) {
    1163. 

  1163.     fn.glGenQueriesFn =
    1164. 

  1164.         reinterpret_cast<glGenQueriesProc>(GetGLProcAddress("glGenQueriesEXT"));
    1165. 

  1165.     DCHECK(fn.glGenQueriesFn);
    1166. 

  1166.   }
    1167. 

  1167. 

  1168.   debug_fn.glGenRenderbuffersEXTFn = 0;
    1169. 

  1169.   if (ver->IsAtLeastGL(3u, 0u) || ver->is_es) {
    1170. 

  1170.     fn.glGenRenderbuffersEXTFn = reinterpret_cast<glGenRenderbuffersEXTProc>(
    1171. 

  1171.         GetGLProcAddress("glGenRenderbuffers"));
    1172. 

  1172.     DCHECK(fn.glGenRenderbuffersEXTFn);
    1173. 

  1173.   } else if (ext.b_GL_EXT_framebuffer_object) {
    1174. 

  1174.     fn.glGenRenderbuffersEXTFn = reinterpret_cast<glGenRenderbuffersEXTProc>(
    1175. 

  1175.         GetGLProcAddress("glGenRenderbuffersEXT"));
    1176. 

  1176.     DCHECK(fn.glGenRenderbuffersEXTFn);
    1177. 

  1177.   }
    1178. 

  1178. 

  1179.   debug_fn.glGenSamplersFn = 0;
    1180. 

  1180.   if (ver->IsAtLeastGL(3u, 3u) || ver->IsAtLeastGLES(3u, 0u)) {
    1181. 

  1181.     fn.glGenSamplersFn =
    1182. 

  1182.         reinterpret_cast<glGenSamplersProc>(GetGLProcAddress("glGenSamplers"));
    1183. 

  1183.     DCHECK(fn.glGenSamplersFn);
    1184. 

  1184.   }
    1185. 

  1185. 

  1186.   debug_fn.glGenTransformFeedbacksFn = 0;
    1187. 

  1187.   if (ver->IsAtLeastGLES(3u, 0u) || ver->IsAtLeastGL(4u, 0u)) {
    1188. 

  1188.     fn.glGenTransformFeedbacksFn =
    1189. 

  1189.         reinterpret_cast<glGenTransformFeedbacksProc>(
    1190. 

  1190.             GetGLProcAddress("glGenTransformFeedbacks"));
    1191. 

  1191.     DCHECK(fn.glGenTransformFeedbacksFn);
    1192. 

  1192.   }
    1193. 

  1193. 

  1194.   debug_fn.glGenVertexArraysOESFn = 0;
    1195. 

  1195.   if (ver->IsAtLeastGL(3u, 0u) || ver->IsAtLeastGLES(3u, 0u) ||
    1196. 

  1196.       ext.b_GL_ARB_vertex_array_object) {
    1197. 

  1197.     fn.glGenVertexArraysOESFn = reinterpret_cast<glGenVertexArr
    1198.