src/OpenGl/OpenGl_GlFunctions.hxx

   1 // Created on: 2014-03-17
   2 // Created by: Kirill GAVRILOV
   3 // Copyright (c) 2014 OPEN CASCADE SAS
   4 //
   5 // This file is part of Open CASCADE Technology software library.
   6 //
   7 // This library is free software; you can redistribute it and/or modify it under
   8 // the terms of the GNU Lesser General Public License version 2.1 as published
   9 // by the Free Software Foundation, with special exception defined in the file
  10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
  11 // distribution for complete text of the license and disclaimer of any warranty.
  12 //
  13 // Alternatively, this file may be used under the terms of Open CASCADE
  14 // commercial license or contractual agreement.
  15
  16 #ifndef _OpenGl_GlFunctions_Header
  17 #define _OpenGl_GlFunctions_Header
  18
  19 // required for correct APIENTRY definition
  20 #if defined(_WIN32) && !defined(APIENTRY) && !defined(__CYGWIN__) && !defined(__SCITECH_SNAP__)
  21   #define WIN32_LEAN_AND_MEAN
  22   #include <windows.h>
  23 #endif
  24
  25 #include <Standard_Macro.hxx>
  26 #include <Standard_TypeDef.hxx>
  27
  28 #ifndef APIENTRY
  29   #define APIENTRY
  30 #endif
  31 #ifndef APIENTRYP
  32   #define APIENTRYP APIENTRY *
  33 #endif
  34 #ifndef GLAPI
  35   #define GLAPI extern
  36 #endif
  37
  38 // exclude modern definitions and system-provided glext.h, should be defined before gl.h inclusion
  39 #ifndef GL_GLEXT_LEGACY
  40   #define GL_GLEXT_LEGACY
  41 #endif
  42 #ifndef GLX_GLXEXT_LEGACY
  43   #define GLX_GLXEXT_LEGACY
  44 #endif
  45
  46 // include main OpenGL header provided with system
  47 #if defined(__APPLE__)
  48   #import <TargetConditionals.h>
  49   // macOS 10.4 deprecated OpenGL framework - suppress useless warnings
  50   #define GL_SILENCE_DEPRECATION
  51   #if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
  52     #include <OpenGLES/ES3/gl.h>
  53   #else
  54     #include <OpenGL/gl.h>
  55   #endif
  56   #define __X_GL_H // prevent chaotic gl.h inclusions to avoid compile errors
  57 #elif defined(HAVE_GLES2) || defined(OCCT_UWP) || defined(__ANDROID__) || defined(__QNX__) || defined(__EMSCRIPTEN__)
  58   #if defined(_WIN32)
  59     // Angle OpenGL ES headers do not define function prototypes even for core functions,
  60     // however OCCT is expected to be linked against libGLESv2
  61     #define GL_GLEXT_PROTOTYPES
  62   #endif
  63   #include <GLES3/gl3.h>
  64 #else
  65   #include <GL/gl.h>
  66 #endif
  67
  68 #if !defined(HAVE_EGL) && (defined(__ANDROID__) || defined(__QNX__) || defined(__EMSCRIPTEN__) || defined(HAVE_GLES2) || defined(OCCT_UWP))
  69   #define HAVE_EGL
  70 #endif
  71
  72 #include <InterfaceGraphic.hxx>
  73
  74 #if defined(GL_ES_VERSION_2_0)
  75   #include <OpenGl_GLESExtensions.hxx>
  76 #else
  77   // GL version can be defined by system gl.h header
  78   #undef GL_VERSION_1_2
  79   #undef GL_VERSION_1_3
  80   #undef GL_VERSION_1_4
  81   #undef GL_VERSION_1_5
  82   #undef GL_VERSION_2_0
  83   #undef GL_VERSION_2_1
  84   #undef GL_VERSION_3_0
  85   #undef GL_VERSION_3_1
  86   #undef GL_VERSION_3_2
  87   #undef GL_VERSION_3_3
  88   #undef GL_VERSION_4_0
  89   #undef GL_VERSION_4_1
  90   #undef GL_VERSION_4_2
  91   #undef GL_VERSION_4_3
  92   #undef GL_VERSION_4_4
  93   #undef GL_VERSION_4_5
  94
  95   // include glext.h provided by Khronos group
  96   #include <glext.h>
  97 #endif
  98
  99 class OpenGl_Context;
 100
 101 //! Mega structure defines the complete list of OpenGL functions.
 102 struct OpenGl_GlFunctions
 103 {
 104
 105   //! Check glGetError(); defined for debugging purposes.
 106   //! @return TRUE on error
 107   Standard_EXPORT bool debugPrintError (const char* theName) const;
 108
 109   //! Load functions.
 110   Standard_EXPORT void load (OpenGl_Context& theCtx,
 111                              Standard_Boolean theIsCoreProfile);
 112
 113   // This debug macros can be enabled to help debugging OpenGL implementations
 114   // without solid / working debugging capabilities.
 115   //#define OpenGl_TRACE(theName) {OpenGl_GlFunctions::debugPrintError(#theName);}
 116   #define OpenGl_TRACE(theName)
 117
 118 public: //! @name OpenGL ES 1.1
 119
 120 #if defined(GL_ES_VERSION_2_0)
 121
 122   inline void glActiveTexture (GLenum texture) const
 123   {
 124     ::glActiveTexture (texture);
 125     OpenGl_TRACE(glActiveTexture)
 126   }
 127
 128   inline void glCompressedTexImage2D (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid *data) const
 129   {
 130     ::glCompressedTexImage2D (target, level, internalformat, width, height, border, imageSize, data);
 131     OpenGl_TRACE(glCompressedTexImage2D)
 132   }
 133
 134   inline void glCompressedTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const GLvoid *data) const
 135   {
 136     ::glCompressedTexSubImage2D (target, level, xoffset, yoffset, width, height, format, imageSize, data);
 137     OpenGl_TRACE(glCompressedTexSubImage2D)
 138   }
 139
 140   inline void glBindBuffer (GLenum target, GLuint buffer) const
 141   {
 142     ::glBindBuffer (target, buffer);
 143     OpenGl_TRACE(glBindBuffer)
 144   }
 145
 146   inline void glBufferData (GLenum target, GLsizeiptr size, const void* data, GLenum usage) const
 147   {
 148     ::glBufferData (target, size, data, usage);
 149     OpenGl_TRACE(glBufferData)
 150   }
 151
 152   inline void glBufferSubData (GLenum target, GLintptr offset, GLsizeiptr size, const void* data) const
 153   {
 154     ::glBufferSubData (target, offset, size, data);
 155     OpenGl_TRACE(glBufferSubData)
 156   }
 157
 158   inline void glDeleteBuffers (GLsizei n, const GLuint *buffers) const
 159   {
 160     ::glDeleteBuffers (n, buffers);
 161     OpenGl_TRACE(glDeleteBuffers)
 162   }
 163
 164   inline void glDeleteTextures (GLsizei n, const GLuint *textures) const
 165   {
 166     ::glDeleteTextures (n, textures);
 167     OpenGl_TRACE(glDeleteTextures)
 168   }
 169
 170   inline void glDepthFunc (GLenum func) const
 171   {
 172     ::glDepthFunc (func);
 173     OpenGl_TRACE(glDepthFunc)
 174   }
 175
 176   inline void glDepthMask (GLboolean flag) const
 177   {
 178     ::glDepthMask (flag);
 179     OpenGl_TRACE(glDepthMask)
 180   }
 181
 182   inline void glDepthRangef (GLfloat n, GLfloat f) const
 183   {
 184     ::glDepthRangef (n, f);
 185     OpenGl_TRACE(glDepthRangef)
 186   }
 187
 188   inline void glGenBuffers (GLsizei n, GLuint *buffers) const
 189   {
 190     ::glGenBuffers (n, buffers);
 191     OpenGl_TRACE(glGenBuffers)
 192   }
 193
 194   inline void glGenTextures (GLsizei n, GLuint *textures) const
 195   {
 196     ::glGenTextures (n, textures);
 197     OpenGl_TRACE(glGenTextures)
 198   }
 199
 200   inline void glGetBufferParameteriv (GLenum target, GLenum pname, GLint* params) const
 201   {
 202     ::glGetBufferParameteriv (target, pname, params);
 203     OpenGl_TRACE(glGetBufferParameteriv)
 204   }
 205
 206   inline GLboolean glIsBuffer (GLuint buffer) const
 207   {
 208     return ::glIsBuffer (buffer);
 209   }
 210
 211   inline void glSampleCoverage (GLfloat value, GLboolean invert) const
 212   {
 213     ::glSampleCoverage (value, invert);
 214     OpenGl_TRACE(glSampleCoverage)
 215   }
 216
 217   inline void glMultiDrawElements (GLenum theMode, const GLsizei* theCount, GLenum theType, const void* const* theIndices, GLsizei theDrawCount) const
 218   {
 219     if (theCount   == NULL
 220      || theIndices == NULL)
 221     {
 222       return;
 223     }
 224
 225     for (GLsizei aBatchIter = 0; aBatchIter < theDrawCount; ++aBatchIter)
 226     {
 227       ::glDrawElements (theMode, theCount[aBatchIter], theType, theIndices[aBatchIter]);
 228     }
 229     OpenGl_TRACE(glMultiDrawElements)
 230   }
 231
 232 #endif
 233
 234 public: //! @name OpenGL ES 2.0
 235
 236 #if defined(GL_ES_VERSION_2_0)
 237   inline void glBlendColor (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha) const
 238   {
 239     ::glBlendColor (red, green, blue, alpha);
 240     OpenGl_TRACE(glBlendColor)
 241   }
 242
 243   inline void glBlendEquation (GLenum mode) const
 244   {
 245     ::glBlendEquation (mode);
 246     OpenGl_TRACE(glBlendEquation)
 247   }
 248
 249   inline void glBlendFuncSeparate (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha) const
 250   {
 251     ::glBlendFuncSeparate (sfactorRGB, dfactorRGB, sfactorAlpha, dfactorAlpha);
 252     OpenGl_TRACE(glBlendFuncSeparate)
 253   }
 254
 255   inline void glBlendEquationSeparate (GLenum modeRGB, GLenum modeAlpha) const
 256   {
 257     ::glBlendEquationSeparate (modeRGB, modeAlpha);
 258     OpenGl_TRACE(glBlendEquationSeparate)
 259   }
 260
 261   inline void glStencilOpSeparate (GLenum face, GLenum sfail, GLenum dpfail, GLenum dppass) const
 262   {
 263     ::glStencilOpSeparate (face, sfail, dpfail, dppass);
 264     OpenGl_TRACE(glStencilOpSeparate)
 265   }
 266
 267   inline void glStencilFuncSeparate (GLenum face, GLenum func, GLint ref, GLuint mask) const
 268   {
 269     ::glStencilFuncSeparate (face, func, ref, mask);
 270     OpenGl_TRACE(glStencilFuncSeparate)
 271   }
 272
 273   inline void glStencilMaskSeparate (GLenum face, GLuint mask) const
 274   {
 275     ::glStencilMaskSeparate (face, mask);
 276     OpenGl_TRACE(glStencilMaskSeparate)
 277   }
 278
 279   inline void glAttachShader (GLuint program, GLuint shader) const
 280   {
 281     ::glAttachShader (program, shader);
 282     OpenGl_TRACE(glAttachShader)
 283   }
 284
 285   inline void glBindAttribLocation (GLuint program, GLuint index, const GLchar *name) const
 286   {
 287     ::glBindAttribLocation (program, index, name);
 288     OpenGl_TRACE(glBindAttribLocation)
 289   }
 290
 291   inline void glBindFramebuffer (GLenum target, GLuint framebuffer) const
 292   {
 293     ::glBindFramebuffer (target, framebuffer);
 294     OpenGl_TRACE(glBindFramebuffer)
 295   }
 296
 297   inline void glBindRenderbuffer (GLenum target, GLuint renderbuffer) const
 298   {
 299     ::glBindRenderbuffer (target, renderbuffer);
 300     OpenGl_TRACE(glBindRenderbuffer)
 301   }
 302
 303   inline GLenum glCheckFramebufferStatus (GLenum target) const
 304   {
 305     return ::glCheckFramebufferStatus (target);
 306   }
 307
 308   inline void glCompileShader (GLuint shader) const
 309   {
 310     ::glCompileShader (shader);
 311     OpenGl_TRACE(glCompileShader)
 312   }
 313
 314   inline GLuint glCreateProgram() const
 315   {
 316     return ::glCreateProgram();
 317   }
 318
 319   inline GLuint glCreateShader (GLenum type) const
 320   {
 321     return ::glCreateShader (type);
 322   }
 323
 324   inline void glDeleteFramebuffers (GLsizei n, const GLuint *framebuffers) const
 325   {
 326     ::glDeleteFramebuffers (n, framebuffers);
 327     OpenGl_TRACE(glDeleteFramebuffers)
 328   }
 329
 330   inline void glDeleteProgram (GLuint program) const
 331   {
 332     ::glDeleteProgram (program);
 333     OpenGl_TRACE(glDeleteProgram)
 334   }
 335
 336   inline void glDeleteRenderbuffers (GLsizei n, const GLuint *renderbuffers) const
 337   {
 338     ::glDeleteRenderbuffers (n, renderbuffers);
 339     OpenGl_TRACE(glDeleteRenderbuffers)
 340   }
 341
 342   inline void glDeleteShader (GLuint shader) const
 343   {
 344     ::glDeleteShader (shader);
 345     OpenGl_TRACE(glDeleteShader)
 346   }
 347
 348   inline void glDetachShader (GLuint program, GLuint shader) const
 349   {
 350     ::glDetachShader (program, shader);
 351     OpenGl_TRACE(glDetachShader)
 352   }
 353
 354   inline void glDisableVertexAttribArray (GLuint index) const
 355   {
 356     ::glDisableVertexAttribArray (index);
 357     OpenGl_TRACE(glDisableVertexAttribArray)
 358   }
 359
 360   inline void glEnableVertexAttribArray (GLuint index) const
 361   {
 362     ::glEnableVertexAttribArray (index);
 363     OpenGl_TRACE(glEnableVertexAttribArray)
 364   }
 365
 366   inline void glFramebufferRenderbuffer (GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer) const
 367   {
 368     ::glFramebufferRenderbuffer (target, attachment, renderbuffertarget, renderbuffer);
 369     OpenGl_TRACE(glFramebufferRenderbuffer)
 370   }
 371
 372   inline void glFramebufferTexture2D (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level) const
 373   {
 374     ::glFramebufferTexture2D (target, attachment, textarget, texture, level);
 375     OpenGl_TRACE(glFramebufferTexture2D)
 376   }
 377
 378   inline void glGenerateMipmap (GLenum target) const
 379   {
 380     ::glGenerateMipmap (target);
 381     OpenGl_TRACE(glGenerateMipmap)
 382   }
 383
 384   inline void glGenFramebuffers (GLsizei n, GLuint *framebuffers) const
 385   {
 386     ::glGenFramebuffers (n, framebuffers);
 387     OpenGl_TRACE(glGenFramebuffers)
 388   }
 389
 390   inline void glGenRenderbuffers (GLsizei n, GLuint *renderbuffers) const
 391   {
 392     ::glGenRenderbuffers (n, renderbuffers);
 393     OpenGl_TRACE(glGenRenderbuffers)
 394   }
 395
 396   inline void glGetActiveAttrib (GLuint program, GLuint index, GLsizei bufSize, GLsizei *length, GLint* size, GLenum *type, GLchar *name) const
 397   {
 398     ::glGetActiveAttrib (program, index, bufSize, length, size, type, name);
 399     OpenGl_TRACE(glGetActiveAttrib)
 400   }
 401
 402   inline void glGetActiveUniform (GLuint program, GLuint index, GLsizei bufSize, GLsizei *length, GLint* size, GLenum *type, GLchar *name) const
 403   {
 404     ::glGetActiveUniform (program, index, bufSize, length, size, type, name);
 405     OpenGl_TRACE(glGetActiveUniform)
 406   }
 407
 408   inline void glGetAttachedShaders (GLuint program, GLsizei maxCount, GLsizei *count, GLuint *shaders) const
 409   {
 410     ::glGetAttachedShaders (program, maxCount, count, shaders);
 411     OpenGl_TRACE(glGetAttachedShaders)
 412   }
 413
 414   inline GLint glGetAttribLocation (GLuint program, const GLchar *name) const
 415   {
 416     const GLint aRes = ::glGetAttribLocation (program, name);
 417     OpenGl_TRACE(glGetAttribLocation)
 418     return aRes;
 419   }
 420
 421   inline void glGetFramebufferAttachmentParameteriv (GLenum target, GLenum attachment, GLenum pname, GLint* params) const
 422   {
 423     ::glGetFramebufferAttachmentParameteriv (target, attachment, pname, params);
 424     OpenGl_TRACE(glGetFramebufferAttachmentParameteriv)
 425   }
 426
 427   inline void glGetProgramiv (GLuint program, GLenum pname, GLint* params) const
 428   {
 429     ::glGetProgramiv (program, pname, params);
 430     OpenGl_TRACE(glGetProgramiv)
 431   }
 432
 433   inline void glGetProgramInfoLog (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog) const
 434   {
 435     ::glGetProgramInfoLog (program, bufSize, length, infoLog);
 436     OpenGl_TRACE(glGetProgramInfoLog)
 437   }
 438
 439   inline void glGetRenderbufferParameteriv (GLenum target, GLenum pname, GLint* params) const
 440   {
 441     ::glGetRenderbufferParameteriv (target, pname, params);
 442     OpenGl_TRACE(glGetRenderbufferParameteriv)
 443   }
 444
 445   inline void glGetShaderiv (GLuint shader, GLenum pname, GLint* params) const
 446   {
 447     ::glGetShaderiv (shader, pname, params);
 448     OpenGl_TRACE(glGetShaderiv)
 449   }
 450
 451   inline void glGetShaderInfoLog (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog) const
 452   {
 453     ::glGetShaderInfoLog (shader, bufSize, length, infoLog);
 454     OpenGl_TRACE(glGetShaderInfoLog)
 455   }
 456
 457   inline void glGetShaderPrecisionFormat (GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision) const
 458   {
 459     ::glGetShaderPrecisionFormat (shadertype, precisiontype, range, precision);
 460     OpenGl_TRACE(glGetShaderPrecisionFormat)
 461   }
 462
 463   inline void glGetShaderSource (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *source) const
 464   {
 465     ::glGetShaderSource (shader, bufSize, length, source);
 466     OpenGl_TRACE(glGetShaderSource)
 467   }
 468
 469   inline void glGetUniformfv (GLuint program, GLint location, GLfloat* params) const
 470   {
 471     ::glGetUniformfv (program, location, params);
 472     OpenGl_TRACE(glGetUniformfv)
 473   }
 474
 475   inline void glGetUniformiv (GLuint program, GLint location, GLint* params) const
 476   {
 477     ::glGetUniformiv (program, location, params);
 478     OpenGl_TRACE(glGetUniformiv)
 479   }
 480
 481   GLint glGetUniformLocation (GLuint program, const GLchar *name) const
 482   {
 483     const GLint aRes = ::glGetUniformLocation (program, name);
 484     OpenGl_TRACE(glGetUniformLocation)
 485     return aRes;
 486   }
 487
 488   inline void glGetVertexAttribfv (GLuint index, GLenum pname, GLfloat* params) const
 489   {
 490     ::glGetVertexAttribfv (index, pname, params);
 491     OpenGl_TRACE(glGetVertexAttribfv)
 492   }
 493
 494   inline void glGetVertexAttribiv (GLuint index, GLenum pname, GLint* params) const
 495   {
 496     ::glGetVertexAttribiv (index, pname, params);
 497     OpenGl_TRACE(glGetVertexAttribiv)
 498   }
 499
 500   inline void glGetVertexAttribPointerv (GLuint index, GLenum pname, void* *pointer) const
 501   {
 502     ::glGetVertexAttribPointerv (index, pname, pointer);
 503     OpenGl_TRACE(glGetVertexAttribPointerv)
 504   }
 505
 506   inline GLboolean glIsFramebuffer (GLuint framebuffer) const
 507   {
 508     return ::glIsFramebuffer (framebuffer);
 509   }
 510
 511   inline GLboolean glIsProgram (GLuint program) const
 512   {
 513     return ::glIsProgram (program);
 514   }
 515
 516   inline GLboolean glIsRenderbuffer (GLuint renderbuffer) const
 517   {
 518     return ::glIsRenderbuffer (renderbuffer);
 519   }
 520
 521   inline GLboolean glIsShader (GLuint shader) const
 522   {
 523     return ::glIsShader (shader);
 524   }
 525
 526   inline void glLinkProgram (GLuint program) const
 527   {
 528     ::glLinkProgram (program);
 529     OpenGl_TRACE(glLinkProgram)
 530   }
 531
 532   inline void glReleaseShaderCompiler() const
 533   {
 534     ::glReleaseShaderCompiler();
 535     OpenGl_TRACE(glReleaseShaderCompiler)
 536   }
 537
 538   inline void glRenderbufferStorage (GLenum target, GLenum internalformat, GLsizei width, GLsizei height) const
 539   {
 540     ::glRenderbufferStorage (target, internalformat, width, height);
 541     OpenGl_TRACE(glRenderbufferStorage)
 542   }
 543
 544   inline void glShaderBinary (GLsizei count, const GLuint *shaders, GLenum binaryformat, const void* binary, GLsizei length) const
 545   {
 546     ::glShaderBinary (count, shaders, binaryformat, binary, length);
 547     OpenGl_TRACE(glShaderBinary)
 548   }
 549
 550   inline void glShaderSource (GLuint shader, GLsizei count, const GLchar** string, const GLint* length) const
 551   {
 552     ::glShaderSource (shader, count, string, length);
 553     OpenGl_TRACE(glShaderSource)
 554   }
 555
 556   inline void glUniform1f (GLint location, GLfloat v0) const
 557   {
 558     ::glUniform1f (location, v0);
 559     OpenGl_TRACE(glUniform1f)
 560   }
 561
 562   inline void glUniform1fv (GLint location, GLsizei count, const GLfloat* value) const
 563   {
 564     ::glUniform1fv (location, count, value);
 565     OpenGl_TRACE(glUniform1fv)
 566   }
 567
 568   inline void glUniform1i (GLint location, GLint v0) const
 569   {
 570     ::glUniform1i (location, v0);
 571     OpenGl_TRACE(glUniform1i)
 572   }
 573
 574   inline void glUniform1iv (GLint location, GLsizei count, const GLint* value) const
 575   {
 576     ::glUniform1iv (location, count, value);
 577     OpenGl_TRACE(glUniform1iv)
 578   }
 579
 580   inline void glUniform2f (GLint location, GLfloat v0, GLfloat v1) const
 581   {
 582     ::glUniform2f (location, v0, v1);
 583     OpenGl_TRACE(glUniform2f)
 584   }
 585
 586   inline void glUniform2fv (GLint location, GLsizei count, const GLfloat* value) const
 587   {
 588     ::glUniform2fv (location, count, value);
 589     OpenGl_TRACE(glUniform2fv)
 590   }
 591
 592   inline void glUniform2i (GLint location, GLint v0, GLint v1) const
 593   {
 594     ::glUniform2i (location, v0, v1);
 595     OpenGl_TRACE(glUniform2i)
 596   }
 597
 598   inline void glUniform2iv (GLint location, GLsizei count, const GLint* value) const
 599   {
 600     ::glUniform2iv (location, count, value);
 601     OpenGl_TRACE(glUniform2iv)
 602   }
 603
 604   inline void glUniform3f (GLint location, GLfloat v0, GLfloat v1, GLfloat v2) const
 605   {
 606     ::glUniform3f (location, v0, v1, v2);
 607     OpenGl_TRACE(glUniform3f)
 608   }
 609
 610   inline void glUniform3fv (GLint location, GLsizei count, const GLfloat* value) const
 611   {
 612     ::glUniform3fv (location, count, value);
 613     OpenGl_TRACE(glUniform3fv)
 614   }
 615
 616   inline void glUniform3i (GLint location, GLint v0, GLint v1, GLint v2) const
 617   {
 618     ::glUniform3i (location, v0, v1, v2);
 619     OpenGl_TRACE(glUniform3i)
 620   }
 621
 622   inline void glUniform3iv (GLint location, GLsizei count, const GLint* value) const
 623   {
 624     ::glUniform3iv (location, count, value);
 625     OpenGl_TRACE(glUniform3iv)
 626   }
 627
 628   inline void glUniform4f (GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3) const
 629   {
 630     ::glUniform4f (location, v0, v1, v2, v3);
 631     OpenGl_TRACE(glUniform4f)
 632   }
 633
 634   inline void glUniform4fv (GLint location, GLsizei count, const GLfloat* value) const
 635   {
 636     ::glUniform4fv (location, count, value);
 637     OpenGl_TRACE(glUniform4fv)
 638   }
 639
 640   inline void glUniform4i (GLint location, GLint v0, GLint v1, GLint v2, GLint v3) const
 641   {
 642     ::glUniform4i (location, v0, v1, v2, v3);
 643     OpenGl_TRACE(glUniform4i)
 644   }
 645
 646   inline void glUniform4iv (GLint location, GLsizei count, const GLint* value) const
 647   {
 648     ::glUniform4iv (location, count, value);
 649     OpenGl_TRACE(glUniform4iv)
 650   }
 651
 652   inline void glUniformMatrix2fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value) const
 653   {
 654     ::glUniformMatrix2fv (location, count, transpose, value);
 655     OpenGl_TRACE(glUniformMatrix2fv)
 656   }
 657
 658   inline void glUniformMatrix3fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value) const
 659   {
 660     ::glUniformMatrix3fv (location, count, transpose, value);
 661     OpenGl_TRACE(glUniformMatrix3fv)
 662   }
 663
 664   inline void glUniformMatrix4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value) const
 665   {
 666     ::glUniformMatrix4fv (location, count, transpose, value);
 667     OpenGl_TRACE(glUniformMatrix4fv)
 668   }
 669
 670   inline void glUseProgram (GLuint program) const
 671   {
 672     ::glUseProgram (program);
 673     OpenGl_TRACE(glUseProgram)
 674   }
 675
 676   inline void glValidateProgram (GLuint program) const
 677   {
 678     ::glValidateProgram (program);
 679     OpenGl_TRACE(glValidateProgram)
 680   }
 681
 682   inline void glVertexAttrib1f (GLuint index, GLfloat x) const
 683   {
 684     ::glVertexAttrib1f (index, x);
 685     OpenGl_TRACE(glVertexAttrib1f)
 686   }
 687
 688   inline void glVertexAttrib1fv (GLuint index, const GLfloat* v) const
 689   {
 690     ::glVertexAttrib1fv (index, v);
 691     OpenGl_TRACE(glVertexAttrib1fv)
 692   }
 693
 694   inline void glVertexAttrib2f (GLuint index, GLfloat x, GLfloat y) const
 695   {
 696     ::glVertexAttrib2f (index, x, y);
 697     OpenGl_TRACE(glVertexAttrib2f)
 698   }
 699
 700   inline void glVertexAttrib2fv (GLuint index, const GLfloat* v) const
 701   {
 702     ::glVertexAttrib2fv (index, v);
 703     OpenGl_TRACE(glVertexAttrib2fv)
 704   }
 705
 706   inline void glVertexAttrib3f (GLuint index, GLfloat x, GLfloat y, GLfloat z) const
 707   {
 708     ::glVertexAttrib3f (index, x, y, z);
 709     OpenGl_TRACE(glVertexAttrib3f)
 710   }
 711
 712   inline void glVertexAttrib3fv (GLuint index, const GLfloat* v) const
 713   {
 714     ::glVertexAttrib3fv (index, v);
 715     OpenGl_TRACE(glVertexAttrib3fv)
 716   }
 717
 718   inline void glVertexAttrib4f (GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w) const
 719   {
 720     ::glVertexAttrib4f (index, x, y, z, w);
 721     OpenGl_TRACE(glVertexAttrib4f)
 722   }
 723
 724   inline void glVertexAttrib4fv (GLuint index, const GLfloat* v) const
 725   {
 726     ::glVertexAttrib4fv (index, v);
 727     OpenGl_TRACE(glVertexAttrib4fv)
 728   }
 729
 730   inline void glVertexAttribPointer (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void* pointer) const
 731   {
 732     ::glVertexAttribPointer (index, size, type, normalized, stride, pointer);
 733     OpenGl_TRACE(glVertexAttribPointer)
 734   }
 735
 736 public: //! @name OpenGL ES 3.0
 737
 738   opencascade::PFNGLREADBUFFERPROC glReadBuffer;
 739   opencascade::PFNGLDRAWRANGEELEMENTSPROC glDrawRangeElements;
 740   opencascade::PFNGLTEXIMAGE3DPROC glTexImage3D;
 741   opencascade::PFNGLTEXSUBIMAGE3DPROC glTexSubImage3D;
 742   opencascade::PFNGLCOPYTEXSUBIMAGE3DPROC glCopyTexSubImage3D;
 743   opencascade::PFNGLCOMPRESSEDTEXIMAGE3DPROC glCompressedTexImage3D;
 744   opencascade::PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC glCompressedTexSubImage3D;
 745   opencascade::PFNGLGENQUERIESPROC glGenQueries;
 746   opencascade::PFNGLDELETEQUERIESPROC glDeleteQueries;
 747   opencascade::PFNGLISQUERYPROC    glIsQuery;
 748   opencascade::PFNGLBEGINQUERYPROC glBeginQuery;
 749   opencascade::PFNGLENDQUERYPROC   glEndQuery;
 750   opencascade::PFNGLGETQUERYIVPROC glGetQueryiv;
 751   opencascade::PFNGLGETQUERYOBJECTUIVPROC glGetQueryObjectuiv;
 752   opencascade::PFNGLUNMAPBUFFERPROC glUnmapBuffer;
 753   opencascade::PFNGLGETBUFFERPOINTERVPROC glGetBufferPointerv;
 754   opencascade::PFNGLDRAWBUFFERSPROC glDrawBuffers;
 755   opencascade::PFNGLUNIFORMMATRIX2X3FVPROC glUniformMatrix2x3fv;
 756   opencascade::PFNGLUNIFORMMATRIX3X2FVPROC glUniformMatrix3x2fv;
 757   opencascade::PFNGLUNIFORMMATRIX2X4FVPROC glUniformMatrix2x4fv;
 758   opencascade::PFNGLUNIFORMMATRIX4X2FVPROC glUniformMatrix4x2fv;
 759   opencascade::PFNGLUNIFORMMATRIX3X4FVPROC glUniformMatrix3x4fv;
 760   opencascade::PFNGLUNIFORMMATRIX4X3FVPROC glUniformMatrix4x3fv;
 761   opencascade::PFNGLBLITFRAMEBUFFERPROC glBlitFramebuffer;
 762   opencascade::PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC glRenderbufferStorageMultisample;
 763   opencascade::PFNGLFRAMEBUFFERTEXTURELAYERPROC glFramebufferTextureLayer;
 764   opencascade::PFNGLMAPBUFFERRANGEPROC  glMapBufferRange;
 765   opencascade::PFNGLFLUSHMAPPEDBUFFERRANGEPROC glFlushMappedBufferRange;
 766   opencascade::PFNGLBINDVERTEXARRAYPROC glBindVertexArray;
 767   opencascade::PFNGLDELETEVERTEXARRAYSPROC glDeleteVertexArrays;
 768   opencascade::PFNGLGENVERTEXARRAYSPROC glGenVertexArrays;
 769   opencascade::PFNGLISVERTEXARRAYPROC   glIsVertexArray;
 770   opencascade::PFNGLGETINTEGERI_VPROC   glGetIntegeri_v;
 771   opencascade::PFNGLBEGINTRANSFORMFEEDBACKPROC glBeginTransformFeedback;
 772   opencascade::PFNGLENDTRANSFORMFEEDBACKPROC glEndTransformFeedback;
 773   opencascade::PFNGLBINDBUFFERRANGEPROC glBindBufferRange;
 774   opencascade::PFNGLBINDBUFFERBASEPROC  glBindBufferBase;
 775   opencascade::PFNGLTRANSFORMFEEDBACKVARYINGSPROC glTransformFeedbackVaryings;
 776   opencascade::PFNGLGETTRANSFORMFEEDBACKVARYINGPROC glGetTransformFeedbackVarying;
 777   opencascade::PFNGLVERTEXATTRIBIPOINTERPROC glVertexAttribIPointer;
 778   opencascade::PFNGLGETVERTEXATTRIBIIVPROC   glGetVertexAttribIiv;
 779   opencascade::PFNGLGETVERTEXATTRIBIUIVPROC  glGetVertexAttribIuiv;
 780   opencascade::PFNGLVERTEXATTRIBI4IPROC   glVertexAttribI4i;
 781   opencascade::PFNGLVERTEXATTRIBI4UIPROC  glVertexAttribI4ui;
 782   opencascade::PFNGLVERTEXATTRIBI4IVPROC  glVertexAttribI4iv;
 783   opencascade::PFNGLVERTEXATTRIBI4UIVPROC glVertexAttribI4uiv;
 784   opencascade::PFNGLGETUNIFORMUIVPROC glGetUniformuiv;
 785   opencascade::PFNGLGETFRAGDATALOCATIONPROC glGetFragDataLocation;
 786   opencascade::PFNGLUNIFORM1UIPROC glUniform1ui;
 787   opencascade::PFNGLUNIFORM2UIPROC glUniform2ui;
 788   opencascade::PFNGLUNIFORM3UIPROC glUniform3ui;
 789   opencascade::PFNGLUNIFORM4UIPROC glUniform4ui;
 790   opencascade::PFNGLUNIFORM1UIVPROC glUniform1uiv;
 791   opencascade::PFNGLUNIFORM2UIVPROC glUniform2uiv;
 792   opencascade::PFNGLUNIFORM3UIVPROC glUniform3uiv;
 793   opencascade::PFNGLUNIFORM4UIVPROC glUniform4uiv;
 794   opencascade::PFNGLCLEARBUFFERIVPROC  glClearBufferiv;
 795   opencascade::PFNGLCLEARBUFFERUIVPROC glClearBufferuiv;
 796   opencascade::PFNGLCLEARBUFFERFVPROC  glClearBufferfv;
 797   opencascade::PFNGLCLEARBUFFERFIPROC  glClearBufferfi;
 798   opencascade::PFNGLGETSTRINGIPROC glGetStringi;
 799   opencascade::PFNGLCOPYBUFFERSUBDATAPROC glCopyBufferSubData;
 800   opencascade::PFNGLGETUNIFORMINDICESPROC glGetUniformIndices;
 801   opencascade::PFNGLGETACTIVEUNIFORMSIVPROC  glGetActiveUniformsiv;
 802   opencascade::PFNGLGETUNIFORMBLOCKINDEXPROC glGetUniformBlockIndex;
 803   opencascade::PFNGLGETACTIVEUNIFORMBLOCKIVPROC   glGetActiveUniformBlockiv;
 804   opencascade::PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC glGetActiveUniformBlockName;
 805   opencascade::PFNGLUNIFORMBLOCKBINDINGPROC   glUniformBlockBinding;
 806   opencascade::PFNGLDRAWARRAYSINSTANCEDPROC   glDrawArraysInstanced;
 807   opencascade::PFNGLDRAWELEMENTSINSTANCEDPROC glDrawElementsInstanced;
 808   opencascade::PFNGLFENCESYNCPROC      glFenceSync;
 809   opencascade::PFNGLISSYNCPROC         glIsSync;
 810   opencascade::PFNGLDELETESYNCPROC     glDeleteSync;
 811   opencascade::PFNGLCLIENTWAITSYNCPROC glClientWaitSync;
 812   opencascade::PFNGLWAITSYNCPROC       glWaitSync;
 813   opencascade::PFNGLGETINTEGER64VPROC  glGetInteger64v;
 814   opencascade::PFNGLGETSYNCIVPROC      glGetSynciv;
 815   opencascade::PFNGLGETINTEGER64I_VPROC glGetInteger64i_v;
 816   opencascade::PFNGLGETBUFFERPARAMETERI64VPROC glGetBufferParameteri64v;
 817   opencascade::PFNGLGENSAMPLERSPROC glGenSamplers;
 818   opencascade::PFNGLDELETESAMPLERSPROC glDeleteSamplers;
 819   opencascade::PFNGLISSAMPLERPROC   glIsSampler;
 820   opencascade::PFNGLBINDSAMPLERPROC glBindSampler;
 821   opencascade::PFNGLSAMPLERPARAMETERIPROC  glSamplerParameteri;
 822   opencascade::PFNGLSAMPLERPARAMETERIVPROC glSamplerParameteriv;
 823   opencascade::PFNGLSAMPLERPARAMETERFPROC  glSamplerParameterf;
 824   opencascade::PFNGLSAMPLERPARAMETERFVPROC glSamplerParameterfv;
 825   opencascade::PFNGLGETSAMPLERPARAMETERIVPROC glGetSamplerParameteriv;
 826   opencascade::PFNGLGETSAMPLERPARAMETERFVPROC glGetSamplerParameterfv;
 827   opencascade::PFNGLVERTEXATTRIBDIVISORPROC glVertexAttribDivisor;
 828   opencascade::PFNGLBINDTRANSFORMFEEDBACKPROC glBindTransformFeedback;
 829   opencascade::PFNGLDELETETRANSFORMFEEDBACKSPROC glDeleteTransformFeedbacks;
 830   opencascade::PFNGLGENTRANSFORMFEEDBACKSPROC glGenTransformFeedbacks;
 831   opencascade::PFNGLISTRANSFORMFEEDBACKPROC glIsTransformFeedback;
 832   opencascade::PFNGLPAUSETRANSFORMFEEDBACKPROC glPauseTransformFeedback;
 833   opencascade::PFNGLRESUMETRANSFORMFEEDBACKPROC glResumeTransformFeedback;
 834   opencascade::PFNGLGETPROGRAMBINARYPROC glGetProgramBinary;
 835   opencascade::PFNGLPROGRAMBINARYPROC glProgramBinary;
 836   opencascade::PFNGLPROGRAMPARAMETERIPROC glProgramParameteri;
 837   opencascade::PFNGLINVALIDATEFRAMEBUFFERPROC glInvalidateFramebuffer;
 838   opencascade::PFNGLINVALIDATESUBFRAMEBUFFERPROC glInvalidateSubFramebuffer;
 839   opencascade::PFNGLTEXSTORAGE2DPROC glTexStorage2D;
 840   opencascade::PFNGLTEXSTORAGE3DPROC glTexStorage3D;
 841   opencascade::PFNGLGETINTERNALFORMATIVPROC glGetInternalformativ;
 842
 843 public: //! @name OpenGL ES 3.1
 844
 845   opencascade::PFNGLDISPATCHCOMPUTEPROC glDispatchCompute;
 846   opencascade::PFNGLDISPATCHCOMPUTEINDIRECTPROC glDispatchComputeIndirect;
 847   opencascade::PFNGLDRAWARRAYSINDIRECTPROC glDrawArraysIndirect;
 848   opencascade::PFNGLDRAWELEMENTSINDIRECTPROC glDrawElementsIndirect;
 849   opencascade::PFNGLFRAMEBUFFERPARAMETERIPROC glFramebufferParameteri;
 850   opencascade::PFNGLGETFRAMEBUFFERPARAMETERIVPROC glGetFramebufferParameteriv;
 851   opencascade::PFNGLGETPROGRAMINTERFACEIVPROC glGetProgramInterfaceiv;
 852   opencascade::PFNGLGETPROGRAMRESOURCEINDEXPROC glGetProgramResourceIndex;
 853   opencascade::PFNGLGETPROGRAMRESOURCENAMEPROC glGetProgramResourceName;
 854   opencascade::PFNGLGETPROGRAMRESOURCEIVPROC glGetProgramResourceiv;
 855   opencascade::PFNGLGETPROGRAMRESOURCELOCATIONPROC glGetProgramResourceLocation;
 856   opencascade::PFNGLUSEPROGRAMSTAGESPROC glUseProgramStages;
 857   opencascade::PFNGLACTIVESHADERPROGRAMPROC glActiveShaderProgram;
 858   opencascade::PFNGLCREATESHADERPROGRAMVPROC glCreateShaderProgramv;
 859   opencascade::PFNGLBINDPROGRAMPIPELINEPROC glBindProgramPipeline;
 860   opencascade::PFNGLDELETEPROGRAMPIPELINESPROC glDeleteProgramPipelines;
 861   opencascade::PFNGLGENPROGRAMPIPELINESPROC glGenProgramPipelines;
 862   opencascade::PFNGLISPROGRAMPIPELINEPROC glIsProgramPipeline;
 863   opencascade::PFNGLGETPROGRAMPIPELINEIVPROC glGetProgramPipelineiv;
 864   opencascade::PFNGLPROGRAMUNIFORM1IPROC glProgramUniform1i;
 865   opencascade::PFNGLPROGRAMUNIFORM2IPROC glProgramUniform2i;
 866   opencascade::PFNGLPROGRAMUNIFORM3IPROC glProgramUniform3i;
 867   opencascade::PFNGLPROGRAMUNIFORM4IPROC glProgramUniform4i;
 868   opencascade::PFNGLPROGRAMUNIFORM1UIPROC glProgramUniform1ui;
 869   opencascade::PFNGLPROGRAMUNIFORM2UIPROC glProgramUniform2ui;
 870   opencascade::PFNGLPROGRAMUNIFORM3UIPROC glProgramUniform3ui;
 871   opencascade::PFNGLPROGRAMUNIFORM4UIPROC glProgramUniform4ui;
 872   opencascade::PFNGLPROGRAMUNIFORM1FPROC glProgramUniform1f;
 873   opencascade::PFNGLPROGRAMUNIFORM2FPROC glProgramUniform2f;
 874   opencascade::PFNGLPROGRAMUNIFORM3FPROC glProgramUniform3f;
 875   opencascade::PFNGLPROGRAMUNIFORM4FPROC glProgramUniform4f;
 876   opencascade::PFNGLPROGRAMUNIFORM1IVPROC glProgramUniform1iv;
 877   opencascade::PFNGLPROGRAMUNIFORM2IVPROC glProgramUniform2iv;
 878   opencascade::PFNGLPROGRAMUNIFORM3IVPROC glProgramUniform3iv;
 879   opencascade::PFNGLPROGRAMUNIFORM4IVPROC glProgramUniform4iv;
 880   opencascade::PFNGLPROGRAMUNIFORM1UIVPROC glProgramUniform1uiv;
 881   opencascade::PFNGLPROGRAMUNIFORM2UIVPROC glProgramUniform2uiv;
 882   opencascade::PFNGLPROGRAMUNIFORM3UIVPROC glProgramUniform3uiv;
 883   opencascade::PFNGLPROGRAMUNIFORM4UIVPROC glProgramUniform4uiv;
 884   opencascade::PFNGLPROGRAMUNIFORM1FVPROC glProgramUniform1fv;
 885   opencascade::PFNGLPROGRAMUNIFORM2FVPROC glProgramUniform2fv;
 886   opencascade::PFNGLPROGRAMUNIFORM3FVPROC glProgramUniform3fv;
 887   opencascade::PFNGLPROGRAMUNIFORM4FVPROC glProgramUniform4fv;
 888   opencascade::PFNGLPROGRAMUNIFORMMATRIX2FVPROC glProgramUniformMatrix2fv;
 889   opencascade::PFNGLPROGRAMUNIFORMMATRIX3FVPROC glProgramUniformMatrix3fv;
 890   opencascade::PFNGLPROGRAMUNIFORMMATRIX4FVPROC glProgramUniformMatrix4fv;
 891   opencascade::PFNGLPROGRAMUNIFORMMATRIX2X3FVPROC glProgramUniformMatrix2x3fv;
 892   opencascade::PFNGLPROGRAMUNIFORMMATRIX3X2FVPROC glProgramUniformMatrix3x2fv;
 893   opencascade::PFNGLPROGRAMUNIFORMMATRIX2X4FVPROC glProgramUniformMatrix2x4fv;
 894   opencascade::PFNGLPROGRAMUNIFORMMATRIX4X2FVPROC glProgramUniformMatrix4x2fv;
 895   opencascade::PFNGLPROGRAMUNIFORMMATRIX3X4FVPROC glProgramUniformMatrix3x4fv;
 896   opencascade::PFNGLPROGRAMUNIFORMMATRIX4X3FVPROC glProgramUniformMatrix4x3fv;
 897   opencascade::PFNGLVALIDATEPROGRAMPIPELINEPROC glValidateProgramPipeline;
 898   opencascade::PFNGLGETPROGRAMPIPELINEINFOLOGPROC glGetProgramPipelineInfoLog;
 899   opencascade::PFNGLBINDIMAGETEXTUREPROC glBindImageTexture;
 900   opencascade::PFNGLGETBOOLEANI_VPROC glGetBooleani_v;
 901   opencascade::PFNGLMEMORYBARRIERPROC glMemoryBarrier;
 902   opencascade::PFNGLMEMORYBARRIERBYREGIONPROC glMemoryBarrierByRegion;
 903   opencascade::PFNGLTEXSTORAGE2DMULTISAMPLEPROC glTexStorage2DMultisample;
 904   opencascade::PFNGLGETMULTISAMPLEFVPROC glGetMultisamplefv;
 905   opencascade::PFNGLSAMPLEMASKIPROC glSampleMaski;
 906   opencascade::PFNGLGETTEXLEVELPARAMETERIVPROC glGetTexLevelParameteriv;
 907   opencascade::PFNGLGETTEXLEVELPARAMETERFVPROC glGetTexLevelParameterfv;
 908   opencascade::PFNGLBINDVERTEXBUFFERPROC glBindVertexBuffer;
 909   opencascade::PFNGLVERTEXATTRIBFORMATPROC glVertexAttribFormat;
 910   opencascade::PFNGLVERTEXATTRIBIFORMATPROC glVertexAttribIFormat;
 911   opencascade::PFNGLVERTEXATTRIBBINDINGPROC glVertexAttribBinding;
 912   opencascade::PFNGLVERTEXBINDINGDIVISORPROC glVertexBindingDivisor;
 913
 914 public: //! @name OpenGL ES 3.2
 915
 916   opencascade::PFNGLBLENDBARRIERPROC glBlendBarrier;
 917   opencascade::PFNGLCOPYIMAGESUBDATAPROC glCopyImageSubData;
 918   opencascade::PFNGLPUSHDEBUGGROUPPROC glPushDebugGroup;
 919   opencascade::PFNGLPOPDEBUGGROUPPROC glPopDebugGroup;
 920   opencascade::PFNGLOBJECTLABELPROC glObjectLabel;
 921   opencascade::PFNGLGETOBJECTLABELPROC glGetObjectLabel;
 922   opencascade::PFNGLOBJECTPTRLABELPROC glObjectPtrLabel;
 923   opencascade::PFNGLGETOBJECTPTRLABELPROC glGetObjectPtrLabel;
 924   opencascade::PFNGLGETPOINTERVPROC glGetPointerv;
 925   opencascade::PFNGLENABLEIPROC  glEnablei;
 926   opencascade::PFNGLDISABLEIPROC glDisablei;
 927   opencascade::PFNGLBLENDEQUATIONIPROC glBlendEquationi;
 928   opencascade::PFNGLBLENDEQUATIONSEPARATEIPROC glBlendEquationSeparatei;
 929   opencascade::PFNGLBLENDFUNCIPROC glBlendFunci;
 930   opencascade::PFNGLBLENDFUNCSEPARATEIPROC glBlendFuncSeparatei;
 931   opencascade::PFNGLCOLORMASKIPROC glColorMaski;
 932   opencascade::PFNGLISENABLEDIPROC glIsEnabledi;
 933   opencascade::PFNGLDRAWELEMENTSBASEVERTEXPROC glDrawElementsBaseVertex;
 934   opencascade::PFNGLDRAWRANGEELEMENTSBASEVERTEXPROC glDrawRangeElementsBaseVertex;
 935   opencascade::PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC glDrawElementsInstancedBaseVertex;
 936   opencascade::PFNGLFRAMEBUFFERTEXTUREPROC glFramebufferTexture;
 937   opencascade::PFNGLPRIMITIVEBOUNDINGBOXPROC glPrimitiveBoundingBox;
 938   opencascade::PFNGLGETGRAPHICSRESETSTATUSPROC glGetGraphicsResetStatus;
 939   opencascade::PFNGLREADNPIXELSPROC glReadnPixels;
 940   opencascade::PFNGLGETNUNIFORMFVPROC glGetnUniformfv;
 941   opencascade::PFNGLGETNUNIFORMIVPROC glGetnUniformiv;
 942   opencascade::PFNGLGETNUNIFORMUIVPROC glGetnUniformuiv;
 943   opencascade::PFNGLMINSAMPLESHADINGPROC glMinSampleShading;
 944   opencascade::PFNGLPATCHPARAMETERIPROC glPatchParameteri;
 945   opencascade::PFNGLTEXPARAMETERIIVPROC glTexParameterIiv;
 946   opencascade::PFNGLTEXPARAMETERIUIVPROC glTexParameterIuiv;
 947   opencascade::PFNGLGETTEXPARAMETERIIVPROC glGetTexParameterIiv;
 948   opencascade::PFNGLGETTEXPARAMETERIUIVPROC glGetTexParameterIuiv;
 949   opencascade::PFNGLSAMPLERPARAMETERIIVPROC glSamplerParameterIiv;
 950   opencascade::PFNGLSAMPLERPARAMETERIUIVPROC glSamplerParameterIuiv;
 951   opencascade::PFNGLGETSAMPLERPARAMETERIIVPROC glGetSamplerParameterIiv;
 952   opencascade::PFNGLGETSAMPLERPARAMETERIUIVPROC glGetSamplerParameterIuiv;
 953   opencascade::PFNGLTEXBUFFERPROC glTexBuffer;
 954   opencascade::PFNGLTEXBUFFERRANGEPROC glTexBufferRange;
 955   opencascade::PFNGLTEXSTORAGE3DMULTISAMPLEPROC glTexStorage3DMultisample;
 956
 957 public: //! @name GL_KHR_debug (optional) or OpenGL ES 3.2+
 958
 959   opencascade::PFNGLDEBUGMESSAGECONTROLPROC  glDebugMessageControl;
 960   opencascade::PFNGLDEBUGMESSAGEINSERTPROC   glDebugMessageInsert;
 961   opencascade::PFNGLDEBUGMESSAGECALLBACKPROC glDebugMessageCallback;
 962   opencascade::PFNGLGETDEBUGMESSAGELOGPROC   glGetDebugMessageLog;
 963
 964 #else // OpenGL ES vs. desktop
 965
 966 public: //! @name OpenGL 1.2
 967
 968   PFNGLBLENDCOLORPROC               glBlendColor;
 969   PFNGLBLENDEQUATIONPROC            glBlendEquation;
 970   PFNGLDRAWRANGEELEMENTSPROC        glDrawRangeElements;
 971   PFNGLTEXIMAGE3DPROC               glTexImage3D;
 972   PFNGLTEXSUBIMAGE3DPROC            glTexSubImage3D;
 973   PFNGLCOPYTEXSUBIMAGE3DPROC        glCopyTexSubImage3D;
 974
 975 public: //! @name OpenGL 1.3
 976
 977   PFNGLACTIVETEXTUREPROC            glActiveTexture;
 978   PFNGLSAMPLECOVERAGEPROC           glSampleCoverage;
 979   PFNGLCOMPRESSEDTEXIMAGE3DPROC     glCompressedTexImage3D;
 980   PFNGLCOMPRESSEDTEXIMAGE2DPROC     glCompressedTexImage2D;
 981   PFNGLCOMPRESSEDTEXIMAGE1DPROC     glCompressedTexImage1D;
 982   PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC  glCompressedTexSubImage3D;
 983   PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC  glCompressedTexSubImage2D;
 984   PFNGLCOMPRESSEDTEXSUBIMAGE1DPROC  glCompressedTexSubImage1D;
 985   PFNGLGETCOMPRESSEDTEXIMAGEPROC    glGetCompressedTexImage;
 986
 987 public: //! @name OpenGL 1.4
 988
 989   PFNGLBLENDFUNCSEPARATEPROC        glBlendFuncSeparate;
 990   PFNGLMULTIDRAWARRAYSPROC          glMultiDrawArrays;
 991   PFNGLMULTIDRAWELEMENTSPROC        glMultiDrawElements;
 992   PFNGLPOINTPARAMETERFPROC          glPointParameterf;
 993   PFNGLPOINTPARAMETERFVPROC         glPointParameterfv;
 994   PFNGLPOINTPARAMETERIPROC          glPointParameteri;
 995   PFNGLPOINTPARAMETERIVPROC         glPointParameteriv;
 996
 997 public: //! @name OpenGL 1.5
 998
 999   PFNGLGENQUERIESPROC               glGenQueries;
1000   PFNGLDELETEQUERIESPROC            glDeleteQueries;
1001   PFNGLISQUERYPROC                  glIsQuery;
1002   PFNGLBEGINQUERYPROC               glBeginQuery;
1003   PFNGLENDQUERYPROC                 glEndQuery;
1004   PFNGLGETQUERYIVPROC               glGetQueryiv;
1005   PFNGLGETQUERYOBJECTIVPROC         glGetQueryObjectiv;
1006   PFNGLGETQUERYOBJECTUIVPROC        glGetQueryObjectuiv;
1007   PFNGLBINDBUFFERPROC               glBindBuffer;
1008   PFNGLDELETEBUFFERSPROC            glDeleteBuffers;
1009   PFNGLGENBUFFERSPROC               glGenBuffers;
1010   PFNGLISBUFFERPROC                 glIsBuffer;
1011   PFNGLBUFFERDATAPROC               glBufferData;
1012   PFNGLBUFFERSUBDATAPROC            glBufferSubData;
1013   PFNGLGETBUFFERSUBDATAPROC         glGetBufferSubData;
1014   PFNGLMAPBUFFERPROC                glMapBuffer;
1015   PFNGLUNMAPBUFFERPROC              glUnmapBuffer;
1016   PFNGLGETBUFFERPARAMETERIVPROC     glGetBufferParameteriv;
1017   PFNGLGETBUFFERPOINTERVPROC        glGetBufferPointerv;
1018
1019 public: //! @name OpenGL 2.0
1020
1021   PFNGLBLENDEQUATIONSEPARATEPROC    glBlendEquationSeparate;
1022   PFNGLDRAWBUFFERSPROC              glDrawBuffers;
1023   PFNGLSTENCILOPSEPARATEPROC        glStencilOpSeparate;
1024   PFNGLSTENCILFUNCSEPARATEPROC      glStencilFuncSeparate;
1025   PFNGLSTENCILMASKSEPARATEPROC      glStencilMaskSeparate;
1026   PFNGLATTACHSHADERPROC             glAttachShader;
1027   PFNGLBINDATTRIBLOCATIONPROC       glBindAttribLocation;
1028   PFNGLCOMPILESHADERPROC            glCompileShader;
1029   PFNGLCREATEPROGRAMPROC            glCreateProgram;
1030   PFNGLCREATESHADERPROC             glCreateShader;
1031   PFNGLDELETEPROGRAMPROC            glDeleteProgram;
1032   PFNGLDELETESHADERPROC             glDeleteShader;
1033   PFNGLDETACHSHADERPROC             glDetachShader;
1034   PFNGLDISABLEVERTEXATTRIBARRAYPROC glDisableVertexAttribArray;
1035   PFNGLENABLEVERTEXATTRIBARRAYPROC  glEnableVertexAttribArray;
1036   PFNGLGETACTIVEATTRIBPROC          glGetActiveAttrib;
1037   PFNGLGETACTIVEUNIFORMPROC         glGetActiveUniform;
1038   PFNGLGETATTACHEDSHADERSPROC       glGetAttachedShaders;
1039   PFNGLGETATTRIBLOCATIONPROC        glGetAttribLocation;
1040   PFNGLGETPROGRAMIVPROC             glGetProgramiv;
1041   PFNGLGETPROGRAMINFOLOGPROC        glGetProgramInfoLog;
1042   PFNGLGETSHADERIVPROC              glGetShaderiv;
1043   PFNGLGETSHADERINFOLOGPROC         glGetShaderInfoLog;
1044   PFNGLGETSHADERSOURCEPROC          glGetShaderSource;
1045   PFNGLGETUNIFORMLOCATIONPROC       glGetUniformLocation;
1046   PFNGLGETUNIFORMFVPROC             glGetUniformfv;
1047   PFNGLGETUNIFORMIVPROC             glGetUniformiv;
1048   PFNGLGETVERTEXATTRIBDVPROC        glGetVertexAttribdv;
1049   PFNGLGETVERTEXATTRIBFVPROC        glGetVertexAttribfv;
1050   PFNGLGETVERTEXATTRIBIVPROC        glGetVertexAttribiv;
1051   PFNGLGETVERTEXATTRIBPOINTERVPROC  glGetVertexAttribPointerv;
1052   PFNGLISPROGRAMPROC                glIsProgram;
1053   PFNGLISSHADERPROC                 glIsShader;
1054   PFNGLLINKPROGRAMPROC              glLinkProgram;
1055   PFNGLSHADERSOURCEPROC             glShaderSource;
1056   PFNGLUSEPROGRAMPROC               glUseProgram;
1057   PFNGLUNIFORM1FPROC                glUniform1f;
1058   PFNGLUNIFORM2FPROC                glUniform2f;
1059   PFNGLUNIFORM3FPROC                glUniform3f;
1060   PFNGLUNIFORM4FPROC                glUniform4f;
1061   PFNGLUNIFORM1IPROC                glUniform1i;
1062   PFNGLUNIFORM2IPROC                glUniform2i;
1063   PFNGLUNIFORM3IPROC                glUniform3i;
1064   PFNGLUNIFORM4IPROC                glUniform4i;
1065   PFNGLUNIFORM1FVPROC               glUniform1fv;
1066   PFNGLUNIFORM2FVPROC               glUniform2fv;
1067   PFNGLUNIFORM3FVPROC               glUniform3fv;
1068   PFNGLUNIFORM4FVPROC               glUniform4fv;
1069   PFNGLUNIFORM1IVPROC               glUniform1iv;
1070   PFNGLUNIFORM2IVPROC               glUniform2iv;
1071   PFNGLUNIFORM3IVPROC               glUniform3iv;
1072   PFNGLUNIFORM4IVPROC               glUniform4iv;
1073   PFNGLUNIFORMMATRIX2FVPROC         glUniformMatrix2fv;
1074   PFNGLUNIFORMMATRIX3FVPROC         glUniformMatrix3fv;
1075   PFNGLUNIFORMMATRIX4FVPROC         glUniformMatrix4fv;
1076   PFNGLVALIDATEPROGRAMPROC          glValidateProgram;
1077   PFNGLVERTEXATTRIB1DPROC           glVertexAttrib1d;
1078   PFNGLVERTEXATTRIB1DVPROC          glVertexAttrib1dv;
1079   PFNGLVERTEXATTRIB1FPROC           glVertexAttrib1f;
1080   PFNGLVERTEXATTRIB1FVPROC          glVertexAttrib1fv;
1081   PFNGLVERTEXATTRIB1SPROC           glVertexAttrib1s;
1082   PFNGLVERTEXATTRIB1SVPROC          glVertexAttrib1sv;
1083   PFNGLVERTEXATTRIB2DPROC           glVertexAttrib2d;
1084   PFNGLVERTEXATTRIB2DVPROC          glVertexAttrib2dv;
1085   PFNGLVERTEXATTRIB2FPROC           glVertexAttrib2f;
1086   PFNGLVERTEXATTRIB2FVPROC          glVertexAttrib2fv;
1087   PFNGLVERTEXATTRIB2SPROC           glVertexAttrib2s;
1088   PFNGLVERTEXATTRIB2SVPROC          glVertexAttrib2sv;
1089   PFNGLVERTEXATTRIB3DPROC           glVertexAttrib3d;
1090   PFNGLVERTEXATTRIB3DVPROC          glVertexAttrib3dv;
1091   PFNGLVERTEXATTRIB3FPROC           glVertexAttrib3f;
1092   PFNGLVERTEXATTRIB3FVPROC          glVertexAttrib3fv;
1093   PFNGLVERTEXATTRIB3SPROC           glVertexAttrib3s;
1094   PFNGLVERTEXATTRIB3SVPROC          glVertexAttrib3sv;
1095   PFNGLVERTEXATTRIB4NBVPROC         glVertexAttrib4Nbv;
1096   PFNGLVERTEXATTRIB4NIVPROC         glVertexAttrib4Niv;
1097   PFNGLVERTEXATTRIB4NSVPROC         glVertexAttrib4Nsv;
1098   PFNGLVERTEXATTRIB4NUBPROC         glVertexAttrib4Nub;
1099   PFNGLVERTEXATTRIB4NUBVPROC        glVertexAttrib4Nubv;
1100   PFNGLVERTEXATTRIB4NUIVPROC        glVertexAttrib4Nuiv;
1101   PFNGLVERTEXATTRIB4NUSVPROC        glVertexAttrib4Nusv;
1102   PFNGLVERTEXATTRIB4BVPROC          glVertexAttrib4bv;
1103   PFNGLVERTEXATTRIB4DPROC           glVertexAttrib4d;
1104   PFNGLVERTEXATTRIB4DVPROC          glVertexAttrib4dv;
1105   PFNGLVERTEXATTRIB4FPROC           glVertexAttrib4f;
1106   PFNGLVERTEXATTRIB4FVPROC          glVertexAttrib4fv;
1107   PFNGLVERTEXATTRIB4IVPROC          glVertexAttrib4iv;
1108   PFNGLVERTEXATTRIB4SPROC           glVertexAttrib4s;
1109   PFNGLVERTEXATTRIB4SVPROC          glVertexAttrib4sv;
1110   PFNGLVERTEXATTRIB4UBVPROC         glVertexAttrib4ubv;
1111   PFNGLVERTEXATTRIB4UIVPROC         glVertexAttrib4uiv;
1112   PFNGLVERTEXATTRIB4USVPROC         glVertexAttrib4usv;
1113   PFNGLVERTEXATTRIBPOINTERPROC      glVertexAttribPointer;
1114
1115 public: //! @name OpenGL 2.1
1116
1117   PFNGLUNIFORMMATRIX2X3FVPROC       glUniformMatrix2x3fv;
1118   PFNGLUNIFORMMATRIX3X2FVPROC       glUniformMatrix3x2fv;
1119   PFNGLUNIFORMMATRIX2X4FVPROC       glUniformMatrix2x4fv;
1120   PFNGLUNIFORMMATRIX4X2FVPROC       glUniformMatrix4x2fv;
1121   PFNGLUNIFORMMATRIX3X4FVPROC       glUniformMatrix3x4fv;
1122   PFNGLUNIFORMMATRIX4X3FVPROC       glUniformMatrix4x3fv;
1123
1124 public: //! @name GL_ARB_framebuffer_object (added to OpenGL 3.0 core)
1125
1126   PFNGLISRENDERBUFFERPROC                      glIsRenderbuffer;
1127   PFNGLBINDRENDERBUFFERPROC                    glBindRenderbuffer;
1128   PFNGLDELETERENDERBUFFERSPROC                 glDeleteRenderbuffers;
1129   PFNGLGENRENDERBUFFERSPROC                    glGenRenderbuffers;
1130   PFNGLRENDERBUFFERSTORAGEPROC                 glRenderbufferStorage;
1131   PFNGLGETRENDERBUFFERPARAMETERIVPROC          glGetRenderbufferParameteriv;
1132   PFNGLISFRAMEBUFFERPROC                       glIsFramebuffer;
1133   PFNGLBINDFRAMEBUFFERPROC                     glBindFramebuffer;
1134   PFNGLDELETEFRAMEBUFFERSPROC                  glDeleteFramebuffers;
1135   PFNGLGENFRAMEBUFFERSPROC                     glGenFramebuffers;
1136   PFNGLCHECKFRAMEBUFFERSTATUSPROC              glCheckFramebufferStatus;
1137   PFNGLFRAMEBUFFERTEXTURE1DPROC                glFramebufferTexture1D;
1138   PFNGLFRAMEBUFFERTEXTURE2DPROC                glFramebufferTexture2D;
1139   PFNGLFRAMEBUFFERTEXTURE3DPROC                glFramebufferTexture3D;
1140   PFNGLFRAMEBUFFERRENDERBUFFERPROC             glFramebufferRenderbuffer;
1141   PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC glGetFramebufferAttachmentParameteriv;
1142   PFNGLGENERATEMIPMAPPROC                      glGenerateMipmap;
1143   PFNGLBLITFRAMEBUFFERPROC                     glBlitFramebuffer;
1144   PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC      glRenderbufferStorageMultisample;
1145   PFNGLFRAMEBUFFERTEXTURELAYERPROC             glFramebufferTextureLayer;
1146
1147 public: //! @name GL_ARB_vertex_array_object (added to OpenGL 3.0 core)
1148
1149   PFNGLBINDVERTEXARRAYPROC             glBindVertexArray;
1150   PFNGLDELETEVERTEXARRAYSPROC          glDeleteVertexArrays;
1151   PFNGLGENVERTEXARRAYSPROC             glGenVertexArrays;
1152   PFNGLISVERTEXARRAYPROC               glIsVertexArray;
1153
1154 public: //! @name GL_ARB_map_buffer_range (added to OpenGL 3.0 core)
1155
1156   PFNGLMAPBUFFERRANGEPROC              glMapBufferRange;
1157   PFNGLFLUSHMAPPEDBUFFERRANGEPROC      glFlushMappedBufferRange;
1158
1159 public: //! @name OpenGL 3.0
1160
1161   PFNGLCOLORMASKIPROC                  glColorMaski;
1162   PFNGLGETBOOLEANI_VPROC               glGetBooleani_v;
1163   PFNGLGETINTEGERI_VPROC               glGetIntegeri_v;
1164   PFNGLENABLEIPROC                     glEnablei;
1165   PFNGLDISABLEIPROC                    glDisablei;
1166   PFNGLISENABLEDIPROC                  glIsEnabledi;
1167   PFNGLBEGINTRANSFORMFEEDBACKPROC      glBeginTransformFeedback;
1168   PFNGLENDTRANSFORMFEEDBACKPROC        glEndTransformFeedback;
1169   PFNGLBINDBUFFERRANGEPROC             glBindBufferRange;
1170   PFNGLBINDBUFFERBASEPROC              glBindBufferBase;
1171   PFNGLTRANSFORMFEEDBACKVARYINGSPROC   glTransformFeedbackVaryings;
1172   PFNGLGETTRANSFORMFEEDBACKVARYINGPROC glGetTransformFeedbackVarying;
1173   PFNGLCLAMPCOLORPROC                  glClampColor;
1174   PFNGLBEGINCONDITIONALRENDERPROC      glBeginConditionalRender;
1175   PFNGLENDCONDITIONALRENDERPROC        glEndConditionalRender;
1176   PFNGLVERTEXATTRIBIPOINTERPROC        glVertexAttribIPointer;
1177   PFNGLGETVERTEXATTRIBIIVPROC          glGetVertexAttribIiv;
1178   PFNGLGETVERTEXATTRIBIUIVPROC         glGetVertexAttribIuiv;
1179   PFNGLVERTEXATTRIBI1IPROC             glVertexAttribI1i;
1180   PFNGLVERTEXATTRIBI2IPROC             glVertexAttribI2i;
1181   PFNGLVERTEXATTRIBI3IPROC             glVertexAttribI3i;
1182   PFNGLVERTEXATTRIBI4IPROC             glVertexAttribI4i;
1183   PFNGLVERTEXATTRIBI1UIPROC            glVertexAttribI1ui;
1184   PFNGLVERTEXATTRIBI2UIPROC            glVertexAttribI2ui;
1185   PFNGLVERTEXATTRIBI3UIPROC            glVertexAttribI3ui;
1186   PFNGLVERTEXATTRIBI4UIPROC            glVertexAttribI4ui;
1187   PFNGLVERTEXATTRIBI1IVPROC            glVertexAttribI1iv;
1188   PFNGLVERTEXATTRIBI2IVPROC            glVertexAttribI2iv;
1189   PFNGLVERTEXATTRIBI3IVPROC            glVertexAttribI3iv;
1190   PFNGLVERTEXATTRIBI4IVPROC            glVertexAttribI4iv;
1191   PFNGLVERTEXATTRIBI1UIVPROC           glVertexAttribI1uiv;
1192   PFNGLVERTEXATTRIBI2UIVPROC           glVertexAttribI2uiv;
1193   PFNGLVERTEXATTRIBI3UIVPROC           glVertexAttribI3uiv;
1194   PFNGLVERTEXATTRIBI4UIVPROC           glVertexAttribI4uiv;
1195   PFNGLVERTEXATTRIBI4BVPROC            glVertexAttribI4bv;
1196   PFNGLVERTEXATTRIBI4SVPROC            glVertexAttribI4sv;
1197   PFNGLVERTEXATTRIBI4UBVPROC           glVertexAttribI4ubv;
1198   PFNGLVERTEXATTRIBI4USVPROC           glVertexAttribI4usv;
1199   PFNGLGETUNIFORMUIVPROC               glGetUniformuiv;
1200   PFNGLBINDFRAGDATALOCATIONPROC        glBindFragDataLocation;
1201   PFNGLGETFRAGDATALOCATIONPROC         glGetFragDataLocation;
1202   PFNGLUNIFORM1UIPROC                  glUniform1ui;
1203   PFNGLUNIFORM2UIPROC                  glUniform2ui;
1204   PFNGLUNIFORM3UIPROC                  glUniform3ui;
1205   PFNGLUNIFORM4UIPROC                  glUniform4ui;
1206   PFNGLUNIFORM1UIVPROC                 glUniform1uiv;
1207   PFNGLUNIFORM2UIVPROC                 glUniform2uiv;
1208   PFNGLUNIFORM3UIVPROC                 glUniform3uiv;
1209   PFNGLUNIFORM4UIVPROC                 glUniform4uiv;
1210   PFNGLTEXPARAMETERIIVPROC             glTexParameterIiv;
1211   PFNGLTEXPARAMETERIUIVPROC            glTexParameterIuiv;
1212   PFNGLGETTEXPARAMETERIIVPROC          glGetTexParameterIiv;
1213   PFNGLGETTEXPARAMETERIUIVPROC         glGetTexParameterIuiv;
1214   PFNGLCLEARBUFFERIVPROC               glClearBufferiv;
1215   PFNGLCLEARBUFFERUIVPROC              glClearBufferuiv;
1216   PFNGLCLEARBUFFERFVPROC               glClearBufferfv;
1217   PFNGLCLEARBUFFERFIPROC               glClearBufferfi;
1218   PFNGLGETSTRINGIPROC                  glGetStringi;
1219
1220 public: //! @name GL_ARB_uniform_buffer_object (added to OpenGL 3.1 core)
1221
1222   PFNGLGETUNIFORMINDICESPROC           glGetUniformIndices;
1223   PFNGLGETACTIVEUNIFORMSIVPROC         glGetActiveUniformsiv;
1224   PFNGLGETACTIVEUNIFORMNAMEPROC        glGetActiveUniformName;
1225   PFNGLGETUNIFORMBLOCKINDEXPROC        glGetUniformBlockIndex;
1226   PFNGLGETACTIVEUNIFORMBLOCKIVPROC     glGetActiveUniformBlockiv;
1227   PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC   glGetActiveUniformBlockName;
1228   PFNGLUNIFORMBLOCKBINDINGPROC         glUniformBlockBinding;
1229
1230 public: //! @name GL_ARB_copy_buffer (added to OpenGL 3.1 core)
1231
1232   PFNGLCOPYBUFFERSUBDATAPROC           glCopyBufferSubData;
1233
1234 public: //! @name OpenGL 3.1
1235
1236   PFNGLDRAWARRAYSINSTANCEDPROC         glDrawArraysInstanced;
1237   PFNGLDRAWELEMENTSINSTANCEDPROC       glDrawElementsInstanced;
1238   PFNGLTEXBUFFERPROC                   glTexBuffer;
1239   PFNGLPRIMITIVERESTARTINDEXPROC       glPrimitiveRestartIndex;
1240
1241 public: //! @name GL_ARB_draw_elements_base_vertex (added to OpenGL 3.2 core)
1242
1243   PFNGLDRAWELEMENTSBASEVERTEXPROC      glDrawElementsBaseVertex;
1244   PFNGLDRAWRANGEELEMENTSBASEVERTEXPROC glDrawRangeElementsBaseVertex;
1245   PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC glDrawElementsInstancedBaseVertex;
1246   PFNGLMULTIDRAWELEMENTSBASEVERTEXPROC glMultiDrawElementsBaseVertex;
1247
1248 public: //! @name GL_ARB_provoking_vertex (added to OpenGL 3.2 core)
1249
1250   PFNGLPROVOKINGVERTEXPROC             glProvokingVertex;
1251
1252 public: //! @name GL_ARB_sync (added to OpenGL 3.2 core)
1253
1254   PFNGLFENCESYNCPROC                   glFenceSync;
1255   PFNGLISSYNCPROC                      glIsSync;
1256   PFNGLDELETESYNCPROC                  glDeleteSync;
1257   PFNGLCLIENTWAITSYNCPROC              glClientWaitSync;
1258   PFNGLWAITSYNCPROC                    glWaitSync;
1259   PFNGLGETINTEGER64VPROC               glGetInteger64v;
1260   PFNGLGETSYNCIVPROC                   glGetSynciv;
1261
1262 public: //! @name GL_ARB_texture_multisample (added to OpenGL 3.2 core)
1263
1264   PFNGLTEXIMAGE2DMULTISAMPLEPROC       glTexImage2DMultisample;
1265   PFNGLTEXIMAGE3DMULTISAMPLEPROC       glTexImage3DMultisample;
1266   PFNGLGETMULTISAMPLEFVPROC            glGetMultisamplefv;
1267   PFNGLSAMPLEMASKIPROC                 glSampleMaski;
1268
1269 public: //! @name OpenGL 3.2
1270
1271   PFNGLGETINTEGER64I_VPROC             glGetInteger64i_v;
1272   PFNGLGETBUFFERPARAMETERI64VPROC      glGetBufferParameteri64v;
1273   PFNGLFRAMEBUFFERTEXTUREPROC          glFramebufferTexture;
1274
1275 public: //! @name GL_ARB_blend_func_extended (added to OpenGL 3.3 core)
1276
1277   PFNGLBINDFRAGDATALOCATIONINDEXEDPROC glBindFragDataLocationIndexed;
1278   PFNGLGETFRAGDATAINDEXPROC            glGetFragDataIndex;
1279
1280 public: //! @name GL_ARB_sampler_objects (added to OpenGL 3.3 core)
1281
1282   PFNGLGENSAMPLERSPROC                 glGenSamplers;
1283   PFNGLDELETESAMPLERSPROC              glDeleteSamplers;
1284   PFNGLISSAMPLERPROC                   glIsSampler;
1285   PFNGLBINDSAMPLERPROC                 glBindSampler;
1286   PFNGLSAMPLERPARAMETERIPROC           glSamplerParameteri;
1287   PFNGLSAMPLERPARAMETERIVPROC          glSamplerParameteriv;
1288   PFNGLSAMPLERPARAMETERFPROC           glSamplerParameterf;
1289   PFNGLSAMPLERPARAMETERFVPROC          glSamplerParameterfv;
1290   PFNGLSAMPLERPARAMETERIIVPROC         glSamplerParameterIiv;
1291   PFNGLSAMPLERPARAMETERIUIVPROC        glSamplerParameterIuiv;
1292   PFNGLGETSAMPLERPARAMETERIVPROC       glGetSamplerParameteriv;
1293   PFNGLGETSAMPLERPARAMETERIIVPROC      glGetSamplerParameterIiv;
1294   PFNGLGETSAMPLERPARAMETERFVPROC       glGetSamplerParameterfv;
1295   PFNGLGETSAMPLERPARAMETERIUIVPROC     glGetSamplerParameterIuiv;
1296
1297 public: //! @name GL_ARB_timer_query (added to OpenGL 3.3 core)
1298
1299   PFNGLQUERYCOUNTERPROC                glQueryCounter;
1300   PFNGLGETQUERYOBJECTI64VPROC          glGetQueryObjecti64v;
1301   PFNGLGETQUERYOBJECTUI64VPROC         glGetQueryObjectui64v;
1302
1303 public: //! @name GL_ARB_vertex_type_2_10_10_10_rev (added to OpenGL 3.3 core)
1304
1305   PFNGLVERTEXATTRIBP1UIPROC            glVertexAttribP1ui;
1306   PFNGLVERTEXATTRIBP1UIVPROC           glVertexAttribP1uiv;
1307   PFNGLVERTEXATTRIBP2UIPROC            glVertexAttribP2ui;
1308   PFNGLVERTEXATTRIBP2UIVPROC           glVertexAttribP2uiv;
1309   PFNGLVERTEXATTRIBP3UIPROC            glVertexAttribP3ui;
1310   PFNGLVERTEXATTRIBP3UIVPROC           glVertexAttribP3uiv;
1311   PFNGLVERTEXATTRIBP4UIPROC            glVertexAttribP4ui;
1312   PFNGLVERTEXATTRIBP4UIVPROC           glVertexAttribP4uiv;
1313
1314 public: //! @name OpenGL 3.3
1315
1316   PFNGLVERTEXATTRIBDIVISORPROC         glVertexAttribDivisor;
1317
1318 public: //! @name GL_ARB_draw_indirect (added to OpenGL 4.0 core)
1319
1320   PFNGLDRAWARRAYSINDIRECTPROC          glDrawArraysIndirect;
1321   PFNGLDRAWELEMENTSINDIRECTPROC        glDrawElementsIndirect;
1322
1323 public: //! @name GL_ARB_gpu_shader_fp64 (added to OpenGL 4.0 core)
1324
1325   PFNGLUNIFORM1DPROC                   glUniform1d;
1326   PFNGLUNIFORM2DPROC                   glUniform2d;
1327   PFNGLUNIFORM3DPROC                   glUniform3d;
1328   PFNGLUNIFORM4DPROC                   glUniform4d;
1329   PFNGLUNIFORM1DVPROC                  glUniform1dv;
1330   PFNGLUNIFORM2DVPROC                  glUniform2dv;
1331   PFNGLUNIFORM3DVPROC                  glUniform3dv;
1332   PFNGLUNIFORM4DVPROC                  glUniform4dv;
1333   PFNGLUNIFORMMATRIX2DVPROC            glUniformMatrix2dv;
1334   PFNGLUNIFORMMATRIX3DVPROC            glUniformMatrix3dv;
1335   PFNGLUNIFORMMATRIX4DVPROC            glUniformMatrix4dv;
1336   PFNGLUNIFORMMATRIX2X3DVPROC          glUniformMatrix2x3dv;
1337   PFNGLUNIFORMMATRIX2X4DVPROC          glUniformMatrix2x4dv;
1338   PFNGLUNIFORMMATRIX3X2DVPROC          glUniformMatrix3x2dv;
1339   PFNGLUNIFORMMATRIX3X4DVPROC          glUniformMatrix3x4dv;
1340   PFNGLUNIFORMMATRIX4X2DVPROC          glUniformMatrix4x2dv;
1341   PFNGLUNIFORMMATRIX4X3DVPROC          glUniformMatrix4x3dv;
1342   PFNGLGETUNIFORMDVPROC                glGetUniformdv;
1343
1344 public: //! @name GL_ARB_shader_subroutine (added to OpenGL 4.0 core)
1345
1346   PFNGLGETSUBROUTINEUNIFORMLOCATIONPROC   glGetSubroutineUniformLocation;
1347   PFNGLGETSUBROUTINEINDEXPROC             glGetSubroutineIndex;
1348   PFNGLGETACTIVESUBROUTINEUNIFORMIVPROC   glGetActiveSubroutineUniformiv;
1349   PFNGLGETACTIVESUBROUTINEUNIFORMNAMEPROC glGetActiveSubroutineUniformName;
1350   PFNGLGETACTIVESUBROUTINENAMEPROC        glGetActiveSubroutineName;
1351   PFNGLUNIFORMSUBROUTINESUIVPROC          glUniformSubroutinesuiv;
1352   PFNGLGETUNIFORMSUBROUTINEUIVPROC        glGetUniformSubroutineuiv;
1353   PFNGLGETPROGRAMSTAGEIVPROC              glGetProgramStageiv;
1354
1355 public: //! @name GL_ARB_tessellation_shader (added to OpenGL 4.0 core)
1356
1357   PFNGLPATCHPARAMETERIPROC             glPatchParameteri;
1358   PFNGLPATCHPARAMETERFVPROC            glPatchParameterfv;
1359
1360 public: //! @name GL_ARB_transform_feedback2 (added to OpenGL 4.0 core)
1361
1362   PFNGLBINDTRANSFORMFEEDBACKPROC       glBindTransformFeedback;
1363   PFNGLDELETETRANSFORMFEEDBACKSPROC    glDeleteTransformFeedbacks;
1364   PFNGLGENTRANSFORMFEEDBACKSPROC       glGenTransformFeedbacks;
1365   PFNGLISTRANSFORMFEEDBACKPROC         glIsTransformFeedback;
1366   PFNGLPAUSETRANSFORMFEEDBACKPROC      glPauseTransformFeedback;
1367   PFNGLRESUMETRANSFORMFEEDBACKPROC     glResumeTransformFeedback;
1368   PFNGLDRAWTRANSFORMFEEDBACKPROC       glDrawTransformFeedback;
1369
1370 public: //! @name GL_ARB_transform_feedback3 (added to OpenGL 4.0 core)
1371
1372   PFNGLDRAWTRANSFORMFEEDBACKSTREAMPROC glDrawTransformFeedbackStream;
1373   PFNGLBEGINQUERYINDEXEDPROC           glBeginQueryIndexed;
1374   PFNGLENDQUERYINDEXEDPROC             glEndQueryIndexed;
1375   PFNGLGETQUERYINDEXEDIVPROC           glGetQueryIndexediv;
1376
1377 public: //! @name OpenGL 4.0
1378
1379   PFNGLMINSAMPLESHADINGPROC            glMinSampleShading;
1380   PFNGLBLENDEQUATIONIPROC              glBlendEquationi;
1381   PFNGLBLENDEQUATIONSEPARATEIPROC      glBlendEquationSeparatei;
1382   PFNGLBLENDFUNCIPROC                  glBlendFunci;
1383   PFNGLBLENDFUNCSEPARATEIPROC          glBlendFuncSeparatei;
1384
1385 public: //! @name GL_ARB_ES2_compatibility (added to OpenGL 4.1 core)
1386
1387   PFNGLRELEASESHADERCOMPILERPROC       glReleaseShaderCompiler;
1388   PFNGLSHADERBINARYPROC                glShaderBinary;
1389   PFNGLGETSHADERPRECISIONFORMATPROC    glGetShaderPrecisionFormat;
1390   PFNGLDEPTHRANGEFPROC                 glDepthRangef;
1391   PFNGLCLEARDEPTHFPROC                 glClearDepthf;
1392
1393 public: //! @name GL_ARB_get_program_binary (added to OpenGL 4.1 core)
1394
1395   PFNGLGETPROGRAMBINARYPROC            glGetProgramBinary;
1396   PFNGLPROGRAMBINARYPROC               glProgramBinary;
1397   PFNGLPROGRAMPARAMETERIPROC           glProgramParameteri;
1398
1399 public: //! @name GL_ARB_separate_shader_objects (added to OpenGL 4.1 core)
1400
1401   PFNGLUSEPROGRAMSTAGESPROC            glUseProgramStages;
1402   PFNGLACTIVESHADERPROGRAMPROC         glActiveShaderProgram;
1403   PFNGLCREATESHADERPROGRAMVPROC        glCreateShaderProgramv;
1404   PFNGLBINDPROGRAMPIPELINEPROC         glBindProgramPipeline;
1405   PFNGLDELETEPROGRAMPIPELINESPROC      glDeleteProgramPipelines;
1406   PFNGLGENPROGRAMPIPELINESPROC         glGenProgramPipelines;
1407   PFNGLISPROGRAMPIPELINEPROC           glIsProgramPipeline;
1408   PFNGLGETPROGRAMPIPELINEIVPROC        glGetProgramPipelineiv;
1409   PFNGLPROGRAMUNIFORM1IPROC            glProgramUniform1i;
1410   PFNGLPROGRAMUNIFORM1IVPROC           glProgramUniform1iv;
1411   PFNGLPROGRAMUNIFORM1FPROC            glProgramUniform1f;
1412   PFNGLPROGRAMUNIFORM1FVPROC           glProgramUniform1fv;
1413   PFNGLPROGRAMUNIFORM1DPROC            glProgramUniform1d;
1414   PFNGLPROGRAMUNIFORM1DVPROC           glProgramUniform1dv;
1415   PFNGLPROGRAMUNIFORM1UIPROC           glProgramUniform1ui;
1416   PFNGLPROGRAMUNIFORM1UIVPROC          glProgramUniform1uiv;
1417   PFNGLPROGRAMUNIFORM2IPROC            glProgramUniform2i;
1418   PFNGLPROGRAMUNIFORM2IVPROC           glProgramUniform2iv;
1419   PFNGLPROGRAMUNIFORM2FPROC            glProgramUniform2f;
1420   PFNGLPROGRAMUNIFORM2FVPROC           glProgramUniform2fv;
1421   PFNGLPROGRAMUNIFORM2DPROC            glProgramUniform2d;
1422   PFNGLPROGRAMUNIFORM2DVPROC           glProgramUniform2dv;
1423   PFNGLPROGRAMUNIFORM2UIPROC           glProgramUniform2ui;
1424   PFNGLPROGRAMUNIFORM2UIVPROC          glProgramUniform2uiv;
1425   PFNGLPROGRAMUNIFORM3IPROC            glProgramUniform3i;
1426   PFNGLPROGRAMUNIFORM3IVPROC           glProgramUniform3iv;
1427   PFNGLPROGRAMUNIFORM3FPROC            glProgramUniform3f;
1428   PFNGLPROGRAMUNIFORM3FVPROC           glProgramUniform3fv;
1429   PFNGLPROGRAMUNIFORM3DPROC            glProgramUniform3d;
1430   PFNGLPROGRAMUNIFORM3DVPROC           glProgramUniform3dv;
1431   PFNGLPROGRAMUNIFORM3UIPROC           glProgramUniform3ui;
1432   PFNGLPROGRAMUNIFORM3UIVPROC          glProgramUniform3uiv;
1433   PFNGLPROGRAMUNIFORM4IPROC            glProgramUniform4i;
1434   PFNGLPROGRAMUNIFORM4IVPROC           glProgramUniform4iv;
1435   PFNGLPROGRAMUNIFORM4FPROC            glProgramUniform4f;
1436   PFNGLPROGRAMUNIFORM4FVPROC           glProgramUniform4fv;
1437   PFNGLPROGRAMUNIFORM4DPROC            glProgramUniform4d;
1438   PFNGLPROGRAMUNIFORM4DVPROC           glProgramUniform4dv;
1439   PFNGLPROGRAMUNIFORM4UIPROC           glProgramUniform4ui;
1440   PFNGLPROGRAMUNIFORM4UIVPROC          glProgramUniform4uiv;
1441   PFNGLPROGRAMUNIFORMMATRIX2FVPROC     glProgramUniformMatrix2fv;
1442   PFNGLPROGRAMUNIFORMMATRIX3FVPROC     glProgramUniformMatrix3fv;
1443   PFNGLPROGRAMUNIFORMMATRIX4FVPROC     glProgramUniformMatrix4fv;
1444   PFNGLPROGRAMUNIFORMMATRIX2DVPROC     glProgramUniformMatrix2dv;
1445   PFNGLPROGRAMUNIFORMMATRIX3DVPROC     glProgramUniformMatrix3dv;
1446   PFNGLPROGRAMUNIFORMMATRIX4DVPROC     glProgramUniformMatrix4dv;
1447   PFNGLPROGRAMUNIFORMMATRIX2X3FVPROC   glProgramUniformMatrix2x3fv;
1448   PFNGLPROGRAMUNIFORMMATRIX3X2FVPROC   glProgramUniformMatrix3x2fv;
1449   PFNGLPROGRAMUNIFORMMATRIX2X4FVPROC   glProgramUniformMatrix2x4fv;
1450   PFNGLPROGRAMUNIFORMMATRIX4X2FVPROC   glProgramUniformMatrix4x2fv;
1451   PFNGLPROGRAMUNIFORMMATRIX3X4FVPROC   glProgramUniformMatrix3x4fv;
1452   PFNGLPROGRAMUNIFORMMATRIX4X3FVPROC   glProgramUniformMatrix4x3fv;
1453   PFNGLPROGRAMUNIFORMMATRIX2X3DVPROC   glProgramUniformMatrix2x3dv;
1454   PFNGLPROGRAMUNIFORMMATRIX3X2DVPROC   glProgramUniformMatrix3x2dv;
1455   PFNGLPROGRAMUNIFORMMATRIX2X4DVPROC   glProgramUniformMatrix2x4dv;
1456   PFNGLPROGRAMUNIFORMMATRIX4X2DVPROC   glProgramUniformMatrix4x2dv;
1457   PFNGLPROGRAMUNIFORMMATRIX3X4DVPROC   glProgramUniformMatrix3x4dv;
1458   PFNGLPROGRAMUNIFORMMATRIX4X3DVPROC   glProgramUniformMatrix4x3dv;
1459   PFNGLVALIDATEPROGRAMPIPELINEPROC     glValidateProgramPipeline;
1460   PFNGLGETPROGRAMPIPELINEINFOLOGPROC   glGetProgramPipelineInfoLog;
1461
1462 public: //! @name GL_ARB_vertex_attrib_64bit (added to OpenGL 4.1 core)
1463
1464   PFNGLVERTEXATTRIBL1DPROC             glVertexAttribL1d;
1465   PFNGLVERTEXATTRIBL2DPROC             glVertexAttribL2d;
1466   PFNGLVERTEXATTRIBL3DPROC             glVertexAttribL3d;
1467   PFNGLVERTEXATTRIBL4DPROC             glVertexAttribL4d;
1468   PFNGLVERTEXATTRIBL1DVPROC            glVertexAttribL1dv;
1469   PFNGLVERTEXATTRIBL2DVPROC            glVertexAttribL2dv;
1470   PFNGLVERTEXATTRIBL3DVPROC            glVertexAttribL3dv;
1471   PFNGLVERTEXATTRIBL4DVPROC            glVertexAttribL4dv;
1472   PFNGLVERTEXATTRIBLPOINTERPROC        glVertexAttribLPointer;
1473   PFNGLGETVERTEXATTRIBLDVPROC          glGetVertexAttribLdv;
1474
1475 public: //! @name GL_ARB_viewport_array (added to OpenGL 4.1 core)
1476
1477   PFNGLVIEWPORTARRAYVPROC              glViewportArrayv;
1478   PFNGLVIEWPORTINDEXEDFPROC            glViewportIndexedf;
1479   PFNGLVIEWPORTINDEXEDFVPROC           glViewportIndexedfv;
1480   PFNGLSCISSORARRAYVPROC               glScissorArrayv;
1481   PFNGLSCISSORINDEXEDPROC              glScissorIndexed;
1482   PFNGLSCISSORINDEXEDVPROC             glScissorIndexedv;
1483   PFNGLDEPTHRANGEARRAYVPROC            glDepthRangeArrayv;
1484   PFNGLDEPTHRANGEINDEXEDPROC           glDepthRangeIndexed;
1485   PFNGLGETFLOATI_VPROC                 glGetFloati_v;
1486   PFNGLGETDOUBLEI_VPROC                glGetDoublei_v;
1487
1488 public: //! @name OpenGL 4.1
1489
1490   //
1491
1492 public: //! @name GL_ARB_base_instance (added to OpenGL 4.2 core)
1493
1494   PFNGLDRAWARRAYSINSTANCEDBASEINSTANCEPROC             glDrawArraysInstancedBaseInstance;
1495   PFNGLDRAWELEMENTSINSTANCEDBASEINSTANCEPROC           glDrawElementsInstancedBaseInstance;
1496   PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXBASEINSTANCEPROC glDrawElementsInstancedBaseVertexBaseInstance;
1497
1498 public: //! @name GL_ARB_transform_feedback_instanced (added to OpenGL 4.2 core)
1499
1500   PFNGLDRAWTRANSFORMFEEDBACKINSTANCEDPROC              glDrawTransformFeedbackInstanced;
1501   PFNGLDRAWTRANSFORMFEEDBACKSTREAMINSTANCEDPROC        glDrawTransformFeedbackStreamInstanced;
1502
1503 public: //! @name GL_ARB_internalformat_query (added to OpenGL 4.2 core)
1504
1505   PFNGLGETINTERNALFORMATIVPROC                         glGetInternalformativ;
1506
1507 public: //! @name GL_ARB_shader_atomic_counters (added to OpenGL 4.2 core)
1508
1509   PFNGLGETACTIVEATOMICCOUNTERBUFFERIVPROC              glGetActiveAtomicCounterBufferiv;
1510
1511 public: //! @name GL_ARB_shader_image_load_store (added to OpenGL 4.2 core)
1512
1513   PFNGLBINDIMAGETEXTUREPROC                            glBindImageTexture;
1514   PFNGLMEMORYBARRIERPROC                               glMemoryBarrier;
1515
1516 public: //! @name GL_ARB_texture_storage (added to OpenGL 4.2 core)
1517
1518   PFNGLTEXSTORAGE1DPROC                                glTexStorage1D;
1519   PFNGLTEXSTORAGE2DPROC                                glTexStorage2D;
1520   PFNGLTEXSTORAGE3DPROC                                glTexStorage3D;
1521
1522 public: //! @name OpenGL 4.2
1523
1524 public: //! @name OpenGL 4.3
1525
1526   PFNGLCLEARBUFFERDATAPROC                 glClearBufferData;
1527   PFNGLCLEARBUFFERSUBDATAPROC              glClearBufferSubData;
1528   PFNGLDISPATCHCOMPUTEPROC                 glDispatchCompute;
1529   PFNGLDISPATCHCOMPUTEINDIRECTPROC         glDispatchComputeIndirect;
1530   PFNGLCOPYIMAGESUBDATAPROC                glCopyImageSubData;
1531   PFNGLFRAMEBUFFERPARAMETERIPROC           glFramebufferParameteri;
1532   PFNGLGETFRAMEBUFFERPARAMETERIVPROC       glGetFramebufferParameteriv;
1533   PFNGLGETINTERNALFORMATI64VPROC           glGetInternalformati64v;
1534   PFNGLINVALIDATETEXSUBIMAGEPROC           glInvalidateTexSubImage;
1535   PFNGLINVALIDATETEXIMAGEPROC              glInvalidateTexImage;
1536   PFNGLINVALIDATEBUFFERSUBDATAPROC         glInvalidateBufferSubData;
1537   PFNGLINVALIDATEBUFFERDATAPROC            glInvalidateBufferData;
1538   PFNGLINVALIDATEFRAMEBUFFERPROC           glInvalidateFramebuffer;
1539   PFNGLINVALIDATESUBFRAMEBUFFERPROC        glInvalidateSubFramebuffer;
1540   PFNGLMULTIDRAWARRAYSINDIRECTPROC         glMultiDrawArraysIndirect;
1541   PFNGLMULTIDRAWELEMENTSINDIRECTPROC       glMultiDrawElementsIndirect;
1542   PFNGLGETPROGRAMINTERFACEIVPROC           glGetProgramInterfaceiv;
1543   PFNGLGETPROGRAMRESOURCEINDEXPROC         glGetProgramResourceIndex;
1544   PFNGLGETPROGRAMRESOURCENAMEPROC          glGetProgramResourceName;
1545   PFNGLGETPROGRAMRESOURCEIVPROC            glGetProgramResourceiv;
1546   PFNGLGETPROGRAMRESOURCELOCATIONPROC      glGetProgramResourceLocation;
1547   PFNGLGETPROGRAMRESOURCELOCATIONINDEXPROC glGetProgramResourceLocationIndex;
1548   PFNGLSHADERSTORAGEBLOCKBINDINGPROC       glShaderStorageBlockBinding;
1549   PFNGLTEXBUFFERRANGEPROC                  glTexBufferRange;
1550   PFNGLTEXSTORAGE2DMULTISAMPLEPROC         glTexStorage2DMultisample;
1551   PFNGLTEXSTORAGE3DMULTISAMPLEPROC         glTexStorage3DMultisample;
1552   PFNGLTEXTUREVIEWPROC                     glTextureView;
1553   PFNGLBINDVERTEXBUFFERPROC                glBindVertexBuffer;
1554   PFNGLVERTEXATTRIBFORMATPROC              glVertexAttribFormat;
1555   PFNGLVERTEXATTRIBIFORMATPROC             glVertexAttribIFormat;
1556   PFNGLVERTEXATTRIBLFORMATPROC             glVertexAttribLFormat;
1557   PFNGLVERTEXATTRIBBINDINGPROC             glVertexAttribBinding;
1558   PFNGLVERTEXBINDINGDIVISORPROC            glVertexBindingDivisor;
1559   PFNGLDEBUGMESSAGECONTROLPROC             glDebugMessageControl;
1560   PFNGLDEBUGMESSAGEINSERTPROC              glDebugMessageInsert;
1561   PFNGLDEBUGMESSAGECALLBACKPROC            glDebugMessageCallback;
1562   PFNGLGETDEBUGMESSAGELOGPROC              glGetDebugMessageLog;
1563   PFNGLPUSHDEBUGGROUPPROC                  glPushDebugGroup;
1564   PFNGLPOPDEBUGGROUPPROC                   glPopDebugGroup;
1565   PFNGLOBJECTLABELPROC                     glObjectLabel;
1566   PFNGLGETOBJECTLABELPROC                  glGetObjectLabel;
1567   PFNGLOBJECTPTRLABELPROC                  glObjectPtrLabel;
1568   PFNGLGETOBJECTPTRLABELPROC               glGetObjectPtrLabel;
1569
1570 public: //! @name OpenGL 4.4
1571
1572   PFNGLBUFFERSTORAGEPROC     glBufferStorage;
1573   PFNGLCLEARTEXIMAGEPROC     glClearTexImage;
1574   PFNGLCLEARTEXSUBIMAGEPROC  glClearTexSubImage;
1575   PFNGLBINDBUFFERSBASEPROC   glBindBuffersBase;
1576   PFNGLBINDBUFFERSRANGEPROC  glBindBuffersRange;
1577   PFNGLBINDTEXTURESPROC      glBindTextures;
1578   PFNGLBINDSAMPLERSPROC      glBindSamplers;
1579   PFNGLBINDIMAGETEXTURESPROC glBindImageTextures;
1580   PFNGLBINDVERTEXBUFFERSPROC glBindVertexBuffers;
1581
1582 public: //! @name OpenGL 4.5
1583
1584   PFNGLCLIPCONTROLPROC glClipControl;
1585   PFNGLCREATETRANSFORMFEEDBACKSPROC glCreateTransformFeedbacks;
1586   PFNGLTRANSFORMFEEDBACKBUFFERBASEPROC glTransformFeedbackBufferBase;
1587   PFNGLTRANSFORMFEEDBACKBUFFERRANGEPROC glTransformFeedbackBufferRange;
1588   PFNGLGETTRANSFORMFEEDBACKIVPROC glGetTransformFeedbackiv;
1589   PFNGLGETTRANSFORMFEEDBACKI_VPROC glGetTransformFeedbacki_v;
1590   PFNGLGETTRANSFORMFEEDBACKI64_VPROC glGetTransformFeedbacki64_v;
1591   PFNGLCREATEBUFFERSPROC glCreateBuffers;
1592   PFNGLNAMEDBUFFERSTORAGEPROC glNamedBufferStorage;
1593   PFNGLNAMEDBUFFERDATAPROC glNamedBufferData;
1594   PFNGLNAMEDBUFFERSUBDATAPROC glNamedBufferSubData;
1595   PFNGLCOPYNAMEDBUFFERSUBDATAPROC glCopyNamedBufferSubData;
1596   PFNGLCLEARNAMEDBUFFERDATAPROC glClearNamedBufferData;
1597   PFNGLCLEARNAMEDBUFFERSUBDATAPROC glClearNamedBufferSubData;
1598   PFNGLMAPNAMEDBUFFERPROC glMapNamedBuffer;
1599   PFNGLMAPNAMEDBUFFERRANGEPROC glMapNamedBufferRange;
1600   PFNGLUNMAPNAMEDBUFFERPROC glUnmapNamedBuffer;
1601   PFNGLFLUSHMAPPEDNAMEDBUFFERRANGEPROC glFlushMappedNamedBufferRange;
1602   PFNGLGETNAMEDBUFFERPARAMETERIVPROC glGetNamedBufferParameteriv;
1603   PFNGLGETNAMEDBUFFERPARAMETERI64VPROC glGetNamedBufferParameteri64v;
1604   PFNGLGETNAMEDBUFFERPOINTERVPROC glGetNamedBufferPointerv;
1605   PFNGLGETNAMEDBUFFERSUBDATAPROC glGetNamedBufferSubData;
1606   PFNGLCREATEFRAMEBUFFERSPROC glCreateFramebuffers;
1607   PFNGLNAMEDFRAMEBUFFERRENDERBUFFERPROC glNamedFramebufferRenderbuffer;
1608   PFNGLNAMEDFRAMEBUFFERPARAMETERIPROC glNamedFramebufferParameteri;
1609   PFNGLNAMEDFRAMEBUFFERTEXTUREPROC glNamedFramebufferTexture;
1610   PFNGLNAMEDFRAMEBUFFERTEXTURELAYERPROC glNamedFramebufferTextureLayer;
1611   PFNGLNAMEDFRAMEBUFFERDRAWBUFFERPROC glNamedFramebufferDrawBuffer;
1612   PFNGLNAMEDFRAMEBUFFERDRAWBUFFERSPROC glNamedFramebufferDrawBuffers;
1613   PFNGLNAMEDFRAMEBUFFERREADBUFFERPROC glNamedFramebufferReadBuffer;
1614   PFNGLINVALIDATENAMEDFRAMEBUFFERDATAPROC glInvalidateNamedFramebufferData;
1615   PFNGLINVALIDATENAMEDFRAMEBUFFERSUBDATAPROC glInvalidateNamedFramebufferSubData;
1616   PFNGLCLEARNAMEDFRAMEBUFFERIVPROC glClearNamedFramebufferiv;
1617   PFNGLCLEARNAMEDFRAMEBUFFERUIVPROC glClearNamedFramebufferuiv;
1618   PFNGLCLEARNAMEDFRAMEBUFFERFVPROC glClearNamedFramebufferfv;
1619   PFNGLCLEARNAMEDFRAMEBUFFERFIPROC glClearNamedFramebufferfi;
1620   PFNGLBLITNAMEDFRAMEBUFFERPROC glBlitNamedFramebuffer;
1621   PFNGLCHECKNAMEDFRAMEBUFFERSTATUSPROC glCheckNamedFramebufferStatus;
1622   PFNGLGETNAMEDFRAMEBUFFERPARAMETERIVPROC glGetNamedFramebufferParameteriv;
1623   PFNGLGETNAMEDFRAMEBUFFERATTACHMENTPARAMETERIVPROC glGetNamedFramebufferAttachmentParameteriv;
1624   PFNGLCREATERENDERBUFFERSPROC glCreateRenderbuffers;
1625   PFNGLNAMEDRENDERBUFFERSTORAGEPROC glNamedRenderbufferStorage;
1626   PFNGLNAMEDRENDERBUFFERSTORAGEMULTISAMPLEPROC glNamedRenderbufferStorageMultisample;
1627   PFNGLGETNAMEDRENDERBUFFERPARAMETERIVPROC glGetNamedRenderbufferParameteriv;
1628   PFNGLCREATETEXTURESPROC glCreateTextures;
1629   PFNGLTEXTUREBUFFERPROC glTextureBuffer;
1630   PFNGLTEXTUREBUFFERRANGEPROC glTextureBufferRange;
1631   PFNGLTEXTURESTORAGE1DPROC glTextureStorage1D;
1632   PFNGLTEXTURESTORAGE2DPROC glTextureStorage2D;
1633   PFNGLTEXTURESTORAGE3DPROC glTextureStorage3D;
1634   PFNGLTEXTURESTORAGE2DMULTISAMPLEPROC glTextureStorage2DMultisample;
1635   PFNGLTEXTURESTORAGE3DMULTISAMPLEPROC glTextureStorage3DMultisample;
1636   PFNGLTEXTURESUBIMAGE1DPROC glTextureSubImage1D;
1637   PFNGLTEXTURESUBIMAGE2DPROC glTextureSubImage2D;
1638   PFNGLTEXTURESUBIMAGE3DPROC glTextureSubImage3D;
1639   PFNGLCOMPRESSEDTEXTURESUBIMAGE1DPROC glCompressedTextureSubImage1D;
1640   PFNGLCOMPRESSEDTEXTURESUBIMAGE2DPROC glCompressedTextureSubImage2D;
1641   PFNGLCOMPRESSEDTEXTURESUBIMAGE3DPROC glCompressedTextureSubImage3D;
1642   PFNGLCOPYTEXTURESUBIMAGE1DPROC glCopyTextureSubImage1D;
1643   PFNGLCOPYTEXTURESUBIMAGE2DPROC glCopyTextureSubImage2D;
1644   PFNGLCOPYTEXTURESUBIMAGE3DPROC glCopyTextureSubImage3D;
1645   PFNGLTEXTUREPARAMETERFPROC glTextureParameterf;
1646   PFNGLTEXTUREPARAMETERFVPROC glTextureParameterfv;
1647   PFNGLTEXTUREPARAMETERIPROC glTextureParameteri;
1648   PFNGLTEXTUREPARAMETERIIVPROC glTextureParameterIiv;
1649   PFNGLTEXTUREPARAMETERIUIVPROC glTextureParameterIuiv;
1650   PFNGLTEXTUREPARAMETERIVPROC glTextureParameteriv;
1651   PFNGLGENERATETEXTUREMIPMAPPROC glGenerateTextureMipmap;
1652   PFNGLBINDTEXTUREUNITPROC glBindTextureUnit;
1653   PFNGLGETTEXTUREIMAGEPROC glGetTextureImage;
1654   PFNGLGETCOMPRESSEDTEXTUREIMAGEPROC glGetCompressedTextureImage;
1655   PFNGLGETTEXTURELEVELPARAMETERFVPROC glGetTextureLevelParameterfv;
1656   PFNGLGETTEXTURELEVELPARAMETERIVPROC glGetTextureLevelParameteriv;
1657   PFNGLGETTEXTUREPARAMETERFVPROC glGetTextureParameterfv;
1658   PFNGLGETTEXTUREPARAMETERIIVPROC glGetTextureParameterIiv;
1659   PFNGLGETTEXTUREPARAMETERIUIVPROC glGetTextureParameterIuiv;
1660   PFNGLGETTEXTUREPARAMETERIVPROC glGetTextureParameteriv;
1661   PFNGLCREATEVERTEXARRAYSPROC glCreateVertexArrays;
1662   PFNGLDISABLEVERTEXARRAYATTRIBPROC glDisableVertexArrayAttrib;
1663   PFNGLENABLEVERTEXARRAYATTRIBPROC glEnableVertexArrayAttrib;
1664   PFNGLVERTEXARRAYELEMENTBUFFERPROC glVertexArrayElementBuffer;
1665   PFNGLVERTEXARRAYVERTEXBUFFERPROC glVertexArrayVertexBuffer;
1666   PFNGLVERTEXARRAYVERTEXBUFFERSPROC glVertexArrayVertexBuffers;
1667   PFNGLVERTEXARRAYATTRIBBINDINGPROC glVertexArrayAttribBinding;
1668   PFNGLVERTEXARRAYATTRIBFORMATPROC glVertexArrayAttribFormat;
1669   PFNGLVERTEXARRAYATTRIBIFORMATPROC glVertexArrayAttribIFormat;
1670   PFNGLVERTEXARRAYATTRIBLFORMATPROC glVertexArrayAttribLFormat;
1671   PFNGLVERTEXARRAYBINDINGDIVISORPROC glVertexArrayBindingDivisor;
1672   PFNGLGETVERTEXARRAYIVPROC glGetVertexArrayiv;
1673   PFNGLGETVERTEXARRAYINDEXEDIVPROC glGetVertexArrayIndexediv;
1674   PFNGLGETVERTEXARRAYINDEXED64IVPROC glGetVertexArrayIndexed64iv;
1675   PFNGLCREATESAMPLERSPROC glCreateSamplers;
1676   PFNGLCREATEPROGRAMPIPELINESPROC glCreateProgramPipelines;
1677   PFNGLCREATEQUERIESPROC glCreateQueries;
1678   PFNGLGETQUERYBUFFEROBJECTI64VPROC glGetQueryBufferObjecti64v;
1679   PFNGLGETQUERYBUFFEROBJECTIVPROC glGetQueryBufferObjectiv;
1680   PFNGLGETQUERYBUFFEROBJECTUI64VPROC glGetQueryBufferObjectui64v;
1681   PFNGLGETQUERYBUFFEROBJECTUIVPROC glGetQueryBufferObjectuiv;
1682   PFNGLMEMORYBARRIERBYREGIONPROC glMemoryBarrierByRegion;
1683   PFNGLGETTEXTURESUBIMAGEPROC glGetTextureSubImage;
1684   PFNGLGETCOMPRESSEDTEXTURESUBIMAGEPROC glGetCompressedTextureSubImage;
1685   PFNGLGETGRAPHICSRESETSTATUSPROC glGetGraphicsResetStatus;
1686   PFNGLGETNCOMPRESSEDTEXIMAGEPROC glGetnCompressedTexImage;
1687   PFNGLGETNTEXIMAGEPROC glGetnTexImage;
1688   PFNGLGETNUNIFORMDVPROC glGetnUniformdv;
1689   PFNGLGETNUNIFORMFVPROC glGetnUniformfv;
1690   PFNGLGETNUNIFORMIVPROC glGetnUniformiv;
1691   PFNGLGETNUNIFORMUIVPROC glGetnUniformuiv;
1692   PFNGLREADNPIXELSPROC glReadnPixels;
1693   PFNGLGETNMAPDVPROC glGetnMapdv;
1694   PFNGLGETNMAPFVPROC glGetnMapfv;
1695   PFNGLGETNMAPIVPROC glGetnMapiv;
1696   PFNGLGETNPIXELMAPFVPROC  glGetnPixelMapfv;
1697   PFNGLGETNPIXELMAPUIVPROC glGetnPixelMapuiv;
1698   PFNGLGETNPIXELMAPUSVPROC glGetnPixelMapusv;
1699   PFNGLGETNPOLYGONSTIPPLEPROC glGetnPolygonStipple;
1700   PFNGLGETNCOLORTABLEPROC glGetnColorTable;
1701   PFNGLGETNCONVOLUTIONFILTERPROC glGetnConvolutionFilter;
1702   PFNGLGETNSEPARABLEFILTERPROC glGetnSeparableFilter;
1703   PFNGLGETNHISTOGRAMPROC glGetnHistogram;
1704   PFNGLGETNMINMAXPROC glGetnMinmax;
1705   PFNGLTEXTUREBARRIERPROC glTextureBarrier;
1706
1707 public: //! @name OpenGL 4.6
1708
1709   PFNGLSPECIALIZESHADERPROC glSpecializeShader;
1710   PFNGLMULTIDRAWARRAYSINDIRECTCOUNTPROC glMultiDrawArraysIndirectCount;
1711   PFNGLMULTIDRAWELEMENTSINDIRECTCOUNTPROC glMultiDrawElementsIndirectCount;
1712   PFNGLPOLYGONOFFSETCLAMPPROC glPolygonOffsetClamp;
1713
1714 public: //! @name GL_EXT_geometry_shader4
1715
1716   PFNGLPROGRAMPARAMETERIEXTPROC glProgramParameteriEXT;
1717
1718 public: //! @name GL_ARB_bindless_texture
1719
1720   PFNGLGETTEXTUREHANDLEARBPROC             glGetTextureHandleARB;
1721   PFNGLGETTEXTURESAMPLERHANDLEARBPROC      glGetTextureSamplerHandleARB;
1722   PFNGLMAKETEXTUREHANDLERESIDENTARBPROC    glMakeTextureHandleResidentARB;
1723   PFNGLMAKETEXTUREHANDLENONRESIDENTARBPROC glMakeTextureHandleNonResidentARB;
1724   PFNGLGETIMAGEHANDLEARBPROC               glGetImageHandleARB;
1725   PFNGLMAKEIMAGEHANDLERESIDENTARBPROC      glMakeImageHandleResidentARB;
1726   PFNGLMAKEIMAGEHANDLENONRESIDENTARBPROC   glMakeImageHandleNonResidentARB;
1727   PFNGLUNIFORMHANDLEUI64ARBPROC            glUniformHandleui64ARB;
1728   PFNGLUNIFORMHANDLEUI64VARBPROC           glUniformHandleui64vARB;
1729   PFNGLPROGRAMUNIFORMHANDLEUI64ARBPROC     glProgramUniformHandleui64ARB;
1730   PFNGLPROGRAMUNIFORMHANDLEUI64VARBPROC    glProgramUniformHandleui64vARB;
1731   PFNGLISTEXTUREHANDLERESIDENTARBPROC      glIsTextureHandleResidentARB;
1732   PFNGLISIMAGEHANDLERESIDENTARBPROC        glIsImageHandleResidentARB;
1733   PFNGLVERTEXATTRIBL1UI64ARBPROC           glVertexAttribL1ui64ARB;
1734   PFNGLVERTEXATTRIBL1UI64VARBPROC          glVertexAttribL1ui64vARB;
1735   PFNGLGETVERTEXATTRIBLUI64VARBPROC        glGetVertexAttribLui64vARB;
1736
1737 #if defined(_WIN32)
1738 public: //! @name wgl extensions
1739
1740   typedef const char* (WINAPI *wglGetExtensionsStringARB_t)(HDC theDeviceContext);
1741   wglGetExtensionsStringARB_t wglGetExtensionsStringARB;
1742
1743   typedef BOOL        (WINAPI *wglSwapIntervalEXT_t)(int theInterval);
1744   wglSwapIntervalEXT_t wglSwapIntervalEXT;
1745
1746   // WGL_ARB_pixel_format
1747
1748 #ifndef WGL_NUMBER_PIXEL_FORMATS_ARB
1749   #define WGL_NUMBER_PIXEL_FORMATS_ARB            0x2000
1750   #define WGL_DRAW_TO_WINDOW_ARB                  0x2001
1751   #define WGL_DRAW_TO_BITMAP_ARB                  0x2002
1752   #define WGL_ACCELERATION_ARB                    0x2003
1753   #define WGL_NEED_PALETTE_ARB                    0x2004
1754   #define WGL_NEED_SYSTEM_PALETTE_ARB             0x2005
1755   #define WGL_SWAP_LAYER_BUFFERS_ARB              0x2006
1756   #define WGL_SWAP_METHOD_ARB                     0x2007
1757   #define WGL_NUMBER_OVERLAYS_ARB                 0x2008
1758   #define WGL_NUMBER_UNDERLAYS_ARB                0x2009
1759   #define WGL_TRANSPARENT_ARB                     0x200A
1760   #define WGL_TRANSPARENT_RED_VALUE_ARB           0x2037
1761   #define WGL_TRANSPARENT_GREEN_VALUE_ARB         0x2038
1762   #define WGL_TRANSPARENT_BLUE_VALUE_ARB          0x2039
1763   #define WGL_TRANSPARENT_ALPHA_VALUE_ARB         0x203A
1764   #define WGL_TRANSPARENT_INDEX_VALUE_ARB         0x203B
1765   #define WGL_SHARE_DEPTH_ARB                     0x200C
1766   #define WGL_SHARE_STENCIL_ARB                   0x200D
1767   #define WGL_SHARE_ACCUM_ARB                     0x200E
1768   #define WGL_SUPPORT_GDI_ARB                     0x200F
1769   #define WGL_SUPPORT_OPENGL_ARB                  0x2010
1770   #define WGL_DOUBLE_BUFFER_ARB                   0x2011
1771   #define WGL_STEREO_ARB                          0x2012
1772   #define WGL_PIXEL_TYPE_ARB                      0x2013
1773   #define WGL_COLOR_BITS_ARB                      0x2014
1774   #define WGL_RED_BITS_ARB                        0x2015
1775   #define WGL_RED_SHIFT_ARB                       0x2016
1776   #define WGL_GREEN_BITS_ARB                      0x2017
1777   #define WGL_GREEN_SHIFT_ARB                     0x2018
1778   #define WGL_BLUE_BITS_ARB                       0x2019
1779   #define WGL_BLUE_SHIFT_ARB                      0x201A
1780   #define WGL_ALPHA_BITS_ARB                      0x201B
1781   #define WGL_ALPHA_SHIFT_ARB                     0x201C
1782   #define WGL_ACCUM_BITS_ARB                      0x201D
1783   #define WGL_ACCUM_RED_BITS_ARB                  0x201E
1784   #define WGL_ACCUM_GREEN_BITS_ARB                0x201F
1785   #define WGL_ACCUM_BLUE_BITS_ARB                 0x2020
1786   #define WGL_ACCUM_ALPHA_BITS_ARB                0x2021
1787   #define WGL_DEPTH_BITS_ARB                      0x2022
1788   #define WGL_STENCIL_BITS_ARB                    0x2023
1789   #define WGL_AUX_BUFFERS_ARB                     0x2024
1790
1791   #define WGL_NO_ACCELERATION_ARB                 0x2025
1792   #define WGL_GENERIC_ACCELERATION_ARB            0x2026
1793   #define WGL_FULL_ACCELERATION_ARB               0x2027
1794
1795   #define WGL_SWAP_EXCHANGE_ARB                   0x2028
1796   #define WGL_SWAP_COPY_ARB                       0x2029
1797   #define WGL_SWAP_UNDEFINED_ARB                  0x202A
1798
1799   #define WGL_TYPE_RGBA_ARB                       0x202B
1800   #define WGL_TYPE_COLORINDEX_ARB                 0x202C
1801
1802 #endif // WGL_NUMBER_PIXEL_FORMATS_ARB
1803
1804       // WGL_ARB_multisample
1805 #ifndef WGL_SAMPLE_BUFFERS_ARB
1806   #define WGL_SAMPLE_BUFFERS_ARB               0x2041
1807   #define WGL_SAMPLES_ARB                      0x2042
1808 #endif
1809
1810       // WGL_ARB_create_context_robustness
1811 #ifndef WGL_CONTEXT_ROBUST_ACCESS_BIT_ARB
1812   #define WGL_CONTEXT_ROBUST_ACCESS_BIT_ARB 0x00000004
1813   #define WGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_ARB 0x8256
1814   #define WGL_NO_RESET_NOTIFICATION_ARB               0x8261
1815   #define WGL_LOSE_CONTEXT_ON_RESET_ARB               0x8252
1816 #endif
1817
1818   typedef BOOL (WINAPI *wglChoosePixelFormatARB_t)
1819       (HDC           theDevCtx,
1820        const int*    theIntAttribs,
1821        const float*  theFloatAttribs,
1822        unsigned int  theMaxFormats,
1823        int*          theFormatsOut,
1824        unsigned int* theNumFormatsOut);
1825   wglChoosePixelFormatARB_t wglChoosePixelFormatARB;
1826
1827   // WGL_ARB_create_context_profile
1828
1829 #ifndef WGL_CONTEXT_MAJOR_VERSION_ARB
1830   #define WGL_CONTEXT_MAJOR_VERSION_ARB           0x2091
1831   #define WGL_CONTEXT_MINOR_VERSION_ARB           0x2092
1832   #define WGL_CONTEXT_LAYER_PLANE_ARB             0x2093
1833   #define WGL_CONTEXT_FLAGS_ARB                   0x2094
1834   #define WGL_CONTEXT_PROFILE_MASK_ARB            0x9126
1835
1836   // WGL_CONTEXT_FLAGS bits
1837   #define WGL_CONTEXT_DEBUG_BIT_ARB               0x0001
1838   #define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB  0x0002
1839
1840   // WGL_CONTEXT_PROFILE_MASK_ARB bits
1841   #define WGL_CONTEXT_CORE_PROFILE_BIT_ARB          0x00000001
1842   #define WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB 0x00000002
1843 #endif // WGL_CONTEXT_MAJOR_VERSION_ARB
1844
1845   typedef HGLRC (WINAPI *wglCreateContextAttribsARB_t)(HDC        theDevCtx,
1846                                                        HGLRC      theShareContext,
1847                                                        const int* theAttribs);
1848   wglCreateContextAttribsARB_t wglCreateContextAttribsARB;
1849
1850   // WGL_NV_DX_interop
1851
1852   typedef BOOL   (WINAPI *wglDXSetResourceShareHandleNV_t)(void* theObjectD3d, HANDLE theShareHandle);
1853   typedef HANDLE (WINAPI *wglDXOpenDeviceNV_t      )(void*   theDeviceD3d);
1854   typedef BOOL   (WINAPI *wglDXCloseDeviceNV_t     )(HANDLE  theDeviceIOP);
1855   typedef HANDLE (WINAPI *wglDXRegisterObjectNV_t  )(HANDLE  theDeviceIOP,
1856                                                      void*   theObjectD3d,
1857                                                      GLuint  theName,
1858                                                      GLenum  theType,
1859                                                      GLenum  theAccess);
1860   typedef BOOL   (WINAPI *wglDXUnregisterObjectNV_t)(HANDLE  theDeviceIOP,
1861                                                      HANDLE  theObject);
1862   typedef BOOL   (WINAPI *wglDXObjectAccessNV_t    )(HANDLE  theObject,
1863                                                      GLenum  theAccess);
1864   typedef BOOL   (WINAPI *wglDXLockObjectsNV_t     )(HANDLE  theDeviceIOP,
1865                                                      GLint   theCount,
1866                                                      HANDLE* theObjects);
1867   typedef BOOL   (WINAPI *wglDXUnlockObjectsNV_t   )(HANDLE  theDeviceIOP,
1868                                                      GLint   theCount,
1869                                                      HANDLE* theObjects);
1870
1871   wglDXSetResourceShareHandleNV_t wglDXSetResourceShareHandleNV;
1872   wglDXOpenDeviceNV_t       wglDXOpenDeviceNV;
1873   wglDXCloseDeviceNV_t      wglDXCloseDeviceNV;
1874   wglDXRegisterObjectNV_t   wglDXRegisterObjectNV;
1875   wglDXUnregisterObjectNV_t wglDXUnregisterObjectNV;
1876   wglDXObjectAccessNV_t     wglDXObjectAccessNV;
1877   wglDXLockObjectsNV_t      wglDXLockObjectsNV;
1878   wglDXUnlockObjectsNV_t    wglDXUnlockObjectsNV;
1879
1880 #ifndef WGL_ACCESS_READ_WRITE_NV
1881   #define WGL_ACCESS_READ_ONLY_NV     0x0000
1882   #define WGL_ACCESS_READ_WRITE_NV    0x0001
1883   #define WGL_ACCESS_WRITE_DISCARD_NV 0x0002
1884 #endif
1885
1886   // WGL_AMD_gpu_association
1887
1888 #ifndef WGL_GPU_VENDOR_AMD
1889   #define WGL_GPU_VENDOR_AMD                 0x1F00
1890   #define WGL_GPU_RENDERER_STRING_AMD        0x1F01
1891   #define WGL_GPU_OPENGL_VERSION_STRING_AMD  0x1F02
1892   #define WGL_GPU_FASTEST_TARGET_GPUS_AMD    0x21A2
1893   #define WGL_GPU_RAM_AMD                    0x21A3
1894   #define WGL_GPU_CLOCK_AMD                  0x21A4
1895   #define WGL_GPU_NUM_PIPES_AMD              0x21A5
1896   #define WGL_GPU_NUM_SIMD_AMD               0x21A6
1897   #define WGL_GPU_NUM_RB_AMD                 0x21A7
1898   #define WGL_GPU_NUM_SPI_AMD                0x21A8
1899 #endif
1900
1901   typedef UINT (WINAPI *wglGetGPUIDsAMD_t       )(UINT theMaxCount, UINT* theIds);
1902   typedef INT  (WINAPI *wglGetGPUInfoAMD_t      )(UINT theId, INT theProperty, GLenum theDataType, UINT theSize, void* theData);
1903   typedef UINT (WINAPI *wglGetContextGPUIDAMD_t )(HGLRC theHglrc);
1904   wglGetGPUIDsAMD_t       wglGetGPUIDsAMD;
1905   wglGetGPUInfoAMD_t      wglGetGPUInfoAMD;
1906   wglGetContextGPUIDAMD_t wglGetContextGPUIDAMD;
1907
1908 #elif defined(__APPLE__)
1909 public: //! @name CGL extensions
1910
1911 #else
1912 public: //! @name glX extensions
1913
1914   // GLX_EXT_swap_control
1915   //typedef int         (*glXSwapIntervalEXT_t)(Display* theDisplay, GLXDrawable theDrawable, int theInterval);
1916   typedef int         (*glXSwapIntervalEXT_t)();
1917   glXSwapIntervalEXT_t glXSwapIntervalEXT;
1918
1919   typedef int         (*glXSwapIntervalSGI_t)(int theInterval);
1920   glXSwapIntervalSGI_t glXSwapIntervalSGI;
1921
1922   // GLX_MESA_query_renderer
1923 #ifndef GLX_RENDERER_VENDOR_ID_MESA
1924   // for glXQueryRendererIntegerMESA() and glXQueryCurrentRendererIntegerMESA()
1925   #define GLX_RENDERER_VENDOR_ID_MESA                      0x8183
1926   #define GLX_RENDERER_DEVICE_ID_MESA                      0x8184
1927   #define GLX_RENDERER_VERSION_MESA                        0x8185
1928   #define GLX_RENDERER_ACCELERATED_MESA                    0x8186
1929   #define GLX_RENDERER_VIDEO_MEMORY_MESA                   0x8187
1930   #define GLX_RENDERER_UNIFIED_MEMORY_ARCHITECTURE_MESA    0x8188
1931   #define GLX_RENDERER_PREFERRED_PROFILE_MESA              0x8189
1932   #define GLX_RENDERER_OPENGL_CORE_PROFILE_VERSION_MESA    0x818A
1933   #define GLX_RENDERER_OPENGL_COMPATIBILITY_PROFILE_VERSION_MESA 0x818B
1934   #define GLX_RENDERER_OPENGL_ES_PROFILE_VERSION_MESA      0x818C
1935   #define GLX_RENDERER_OPENGL_ES2_PROFILE_VERSION_MESA     0x818D
1936
1937   #define GLX_RENDERER_ID_MESA                             0x818E
1938 #endif // GLX_RENDERER_VENDOR_ID_MESA
1939
1940   typedef Bool (*glXQueryRendererIntegerMESA_t)(Display* theDisplay, int theScreen,
1941                                                 int theRenderer, int theAttribute,
1942                                                 unsigned int* theValue);
1943   typedef Bool (*glXQueryCurrentRendererIntegerMESA_t)(int theAttribute, unsigned int* theValue);
1944   typedef const char* (*glXQueryRendererStringMESA_t)(Display* theDisplay, int theScreen,
1945                                                       int theRenderer, int theAttribute);
1946   typedef const char* (*glXQueryCurrentRendererStringMESA_t)(int theAttribute);
1947
1948   glXQueryRendererIntegerMESA_t        glXQueryRendererIntegerMESA;
1949   glXQueryCurrentRendererIntegerMESA_t glXQueryCurrentRendererIntegerMESA;
1950   glXQueryRendererStringMESA_t         glXQueryRendererStringMESA;
1951   glXQueryCurrentRendererStringMESA_t  glXQueryCurrentRendererStringMESA;
1952 #endif
1953
1954 #endif // OpenGL ES vs. desktop
1955
1956 };
1957
1958 #endif // _OpenGl_GlFunctions_Header