+
+#ifndef GL_TEXTURE_3D
+#define GL_PACK_SKIP_IMAGES 0x806B
+#define GL_PACK_IMAGE_HEIGHT 0x806C
+#define GL_UNPACK_SKIP_IMAGES 0x806D
+#define GL_UNPACK_IMAGE_HEIGHT 0x806E
+#define GL_TEXTURE_3D 0x806F
+#define GL_PROXY_TEXTURE_3D 0x8070
+#define GL_TEXTURE_DEPTH 0x8071
+#define GL_TEXTURE_WRAP_R 0x8072
+#define GL_MAX_3D_TEXTURE_SIZE 0x8073
+#define GL_TEXTURE_BINDING_3D 0x806A
+extern void (GLAPIENTRY *qglTexImage3D)(GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
+extern void (GLAPIENTRY *qglTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid *pixels);
+extern void (GLAPIENTRY *qglCopyTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
+#endif
+
+#ifndef GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB
+#define GL_NORMAL_MAP_ARB 0x8511
+#define GL_REFLECTION_MAP_ARB 0x8512
+#define GL_TEXTURE_CUBE_MAP_ARB 0x8513
+#define GL_TEXTURE_BINDING_CUBE_MAP_ARB 0x8514
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB 0x8515
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB 0x8516
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB 0x8517
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB 0x8518
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB 0x8519
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB 0x851A
+#define GL_PROXY_TEXTURE_CUBE_MAP_ARB 0x851B
+#define GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB 0x851C
+#endif
+
+#ifndef GL_DEPTH_COMPONENT16_ARB
+#define GL_DEPTH_COMPONENT16_ARB 0x81A5
+#define GL_DEPTH_COMPONENT24_ARB 0x81A6
+#define GL_DEPTH_COMPONENT32_ARB 0x81A7
+#define GL_TEXTURE_DEPTH_SIZE_ARB 0x884A
+#define GL_DEPTH_TEXTURE_MODE_ARB 0x884B
+#endif
+
+#ifndef GL_SCISSOR_TEST
+#define GL_SCISSOR_TEST 0x0C11
+#define GL_SCISSOR_BOX 0x0C10
+#endif
+
+// GL_SGIS_texture_edge_clamp or GL_EXT_texture_edge_clamp
+#ifndef GL_CLAMP_TO_EDGE
+#define GL_CLAMP_TO_EDGE 0x812F
+#endif
+
+//GL_ATI_separate_stencil
+#ifndef GL_STENCIL_BACK_FUNC
+#define GL_STENCIL_BACK_FUNC 0x8800
+#define GL_STENCIL_BACK_FAIL 0x8801
+#define GL_STENCIL_BACK_PASS_DEPTH_FAIL 0x8802
+#define GL_STENCIL_BACK_PASS_DEPTH_PASS 0x8803
+#endif
+extern void (GLAPIENTRY *qglStencilOpSeparate)(GLenum, GLenum, GLenum, GLenum);
+extern void (GLAPIENTRY *qglStencilFuncSeparate)(GLenum, GLenum, GLint, GLuint);
+
+//GL_EXT_stencil_two_side
+#define GL_STENCIL_TEST_TWO_SIDE_EXT 0x8910
+#define GL_ACTIVE_STENCIL_FACE_EXT 0x8911
+extern void (GLAPIENTRY *qglActiveStencilFaceEXT)(GLenum);
+
+//GL_EXT_blend_minmax
+#ifndef GL_FUNC_ADD_EXT
+#define GL_FUNC_ADD_EXT 0x8006 // also supplied by GL_EXT_blend_subtract
+#define GL_MIN_EXT 0x8007
+#define GL_MAX_EXT 0x8008
+#define GL_BLEND_EQUATION_EXT 0x8009 // also supplied by GL_EXT_blend_subtract
+extern void (GLAPIENTRY *qglBlendEquationEXT)(GLenum); // also supplied by GL_EXT_blend_subtract
+#endif
+
+//GL_EXT_blend_subtract
+#ifndef GL_FUNC_SUBTRACT_EXT
+#define GL_FUNC_SUBTRACT_EXT 0x800A
+#define GL_FUNC_REVERSE_SUBTRACT_EXT 0x800B
+extern void (GLAPIENTRY *qglBlendEquationEXT)(GLenum); // also supplied by GL_EXT_blend_subtract
+#endif
+
+//GL_ARB_texture_non_power_of_two
+
+//GL_ARB_vertex_buffer_object
+#ifndef GL_ARRAY_BUFFER_ARB
+#define GL_ARRAY_BUFFER_ARB 0x8892
+#define GL_ELEMENT_ARRAY_BUFFER_ARB 0x8893
+#define GL_ARRAY_BUFFER_BINDING_ARB 0x8894
+#define GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB 0x8895
+#define GL_VERTEX_ARRAY_BUFFER_BINDING_ARB 0x8896
+#define GL_NORMAL_ARRAY_BUFFER_BINDING_ARB 0x8897
+#define GL_COLOR_ARRAY_BUFFER_BINDING_ARB 0x8898
+#define GL_INDEX_ARRAY_BUFFER_BINDING_ARB 0x8899
+#define GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB 0x889A
+#define GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB 0x889B
+#define GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB 0x889C
+#define GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB 0x889D
+#define GL_WEIGHT_ARRAY_BUFFER_BINDING_ARB 0x889E
+#define GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB 0x889F
+#define GL_STREAM_DRAW_ARB 0x88E0
+#define GL_STREAM_READ_ARB 0x88E1
+#define GL_STREAM_COPY_ARB 0x88E2
+#define GL_STATIC_DRAW_ARB 0x88E4
+#define GL_STATIC_READ_ARB 0x88E5
+#define GL_STATIC_COPY_ARB 0x88E6
+#define GL_DYNAMIC_DRAW_ARB 0x88E8
+#define GL_DYNAMIC_READ_ARB 0x88E9
+#define GL_DYNAMIC_COPY_ARB 0x88EA
+#define GL_READ_ONLY_ARB 0x88B8
+#define GL_WRITE_ONLY_ARB 0x88B9
+#define GL_READ_WRITE_ARB 0x88BA
+#define GL_BUFFER_SIZE_ARB 0x8764
+#define GL_BUFFER_USAGE_ARB 0x8765
+#define GL_BUFFER_ACCESS_ARB 0x88BB
+#define GL_BUFFER_MAPPED_ARB 0x88BC
+#define GL_BUFFER_MAP_POINTER_ARB 0x88BD
+#endif
+extern void (GLAPIENTRY *qglBindBufferARB) (GLenum target, GLuint buffer);
+extern void (GLAPIENTRY *qglDeleteBuffersARB) (GLsizei n, const GLuint *buffers);
+extern void (GLAPIENTRY *qglGenBuffersARB) (GLsizei n, GLuint *buffers);
+extern GLboolean (GLAPIENTRY *qglIsBufferARB) (GLuint buffer);
+extern GLvoid* (GLAPIENTRY *qglMapBufferARB) (GLenum target, GLenum access);
+extern GLboolean (GLAPIENTRY *qglUnmapBufferARB) (GLenum target);
+extern void (GLAPIENTRY *qglBufferDataARB) (GLenum target, GLsizeiptrARB size, const GLvoid *data, GLenum usage);
+extern void (GLAPIENTRY *qglBufferSubDataARB) (GLenum target, GLintptrARB offset, GLsizeiptrARB size, const GLvoid *data);
+
+//GL_EXT_framebuffer_object
+#ifndef GL_FRAMEBUFFER_EXT
+#define GL_FRAMEBUFFER_EXT 0x8D40
+#define GL_RENDERBUFFER_EXT 0x8D41
+#define GL_STENCIL_INDEX1_EXT 0x8D46
+#define GL_STENCIL_INDEX4_EXT 0x8D47
+#define GL_STENCIL_INDEX8_EXT 0x8D48
+#define GL_STENCIL_INDEX16_EXT 0x8D49
+#define GL_RENDERBUFFER_WIDTH_EXT 0x8D42
+#define GL_RENDERBUFFER_HEIGHT_EXT 0x8D43
+#define GL_RENDERBUFFER_INTERNAL_FORMAT_EXT 0x8D44
+#define GL_RENDERBUFFER_RED_SIZE_EXT 0x8D50
+#define GL_RENDERBUFFER_GREEN_SIZE_EXT 0x8D51
+#define GL_RENDERBUFFER_BLUE_SIZE_EXT 0x8D52
+#define GL_RENDERBUFFER_ALPHA_SIZE_EXT 0x8D53
+#define GL_RENDERBUFFER_DEPTH_SIZE_EXT 0x8D54
+#define GL_RENDERBUFFER_STENCIL_SIZE_EXT 0x8D55
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT 0x8CD0
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT 0x8CD1
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT 0x8CD2
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT 0x8CD3
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT 0x8CD4
+#define GL_COLOR_ATTACHMENT0_EXT 0x8CE0
+#define GL_COLOR_ATTACHMENT1_EXT 0x8CE1
+#define GL_COLOR_ATTACHMENT2_EXT 0x8CE2
+#define GL_COLOR_ATTACHMENT3_EXT 0x8CE3
+#define GL_COLOR_ATTACHMENT4_EXT 0x8CE4
+#define GL_COLOR_ATTACHMENT5_EXT 0x8CE5
+#define GL_COLOR_ATTACHMENT6_EXT 0x8CE6
+#define GL_COLOR_ATTACHMENT7_EXT 0x8CE7
+#define GL_COLOR_ATTACHMENT8_EXT 0x8CE8
+#define GL_COLOR_ATTACHMENT9_EXT 0x8CE9
+#define GL_COLOR_ATTACHMENT10_EXT 0x8CEA
+#define GL_COLOR_ATTACHMENT11_EXT 0x8CEB
+#define GL_COLOR_ATTACHMENT12_EXT 0x8CEC
+#define GL_COLOR_ATTACHMENT13_EXT 0x8CED
+#define GL_COLOR_ATTACHMENT14_EXT 0x8CEE
+#define GL_COLOR_ATTACHMENT15_EXT 0x8CEF
+#define GL_DEPTH_ATTACHMENT_EXT 0x8D00
+#define GL_STENCIL_ATTACHMENT_EXT 0x8D20
+#define GL_FRAMEBUFFER_COMPLETE_EXT 0x8CD5
+#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT 0x8CD6
+#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT 0x8CD7
+#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT 0x8CD9
+#define GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT 0x8CDA
+#define GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT 0x8CDB
+#define GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT 0x8CDC
+#define GL_FRAMEBUFFER_UNSUPPORTED_EXT 0x8CDD
+#define GL_FRAMEBUFFER_BINDING_EXT 0x8CA6
+#define GL_RENDERBUFFER_BINDING_EXT 0x8CA7
+#define GL_MAX_COLOR_ATTACHMENTS_EXT 0x8CDF
+#define GL_MAX_RENDERBUFFER_SIZE_EXT 0x84E8
+#define GL_INVALID_FRAMEBUFFER_OPERATION_EXT 0x0506
+#endif
+extern GLboolean (GLAPIENTRY *qglIsRenderbufferEXT)(GLuint renderbuffer);
+extern void (GLAPIENTRY *qglBindRenderbufferEXT)(GLenum target, GLuint renderbuffer);
+extern void (GLAPIENTRY *qglDeleteRenderbuffersEXT)(GLsizei n, const GLuint *renderbuffers);
+extern void (GLAPIENTRY *qglGenRenderbuffersEXT)(GLsizei n, GLuint *renderbuffers);
+extern void (GLAPIENTRY *qglRenderbufferStorageEXT)(GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+extern void (GLAPIENTRY *qglGetRenderbufferParameterivEXT)(GLenum target, GLenum pname, GLint *params);
+extern GLboolean (GLAPIENTRY *qglIsFramebufferEXT)(GLuint framebuffer);
+extern void (GLAPIENTRY *qglBindFramebufferEXT)(GLenum target, GLuint framebuffer);
+extern void (GLAPIENTRY *qglDeleteFramebuffersEXT)(GLsizei n, const GLuint *framebuffers);
+extern void (GLAPIENTRY *qglGenFramebuffersEXT)(GLsizei n, GLuint *framebuffers);
+extern GLenum (GLAPIENTRY *qglCheckFramebufferStatusEXT)(GLenum target);
+//extern void (GLAPIENTRY *qglFramebufferTexture1DEXT)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+extern void (GLAPIENTRY *qglFramebufferTexture2DEXT)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+extern void (GLAPIENTRY *qglFramebufferTexture3DEXT)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset);
+extern void (GLAPIENTRY *qglFramebufferRenderbufferEXT)(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
+extern void (GLAPIENTRY *qglGetFramebufferAttachmentParameterivEXT)(GLenum target, GLenum attachment, GLenum pname, GLint *params);
+extern void (GLAPIENTRY *qglGenerateMipmapEXT)(GLenum target);
+
+// GL_ARB_draw_buffers
+#ifndef GL_MAX_DRAW_BUFFERS_ARB
+#define GL_MAX_DRAW_BUFFERS_ARB 0x8824
+#define GL_DRAW_BUFFER0_ARB 0x8825
+#define GL_DRAW_BUFFER1_ARB 0x8826
+#define GL_DRAW_BUFFER2_ARB 0x8827
+#define GL_DRAW_BUFFER3_ARB 0x8828
+#define GL_DRAW_BUFFER4_ARB 0x8829
+#define GL_DRAW_BUFFER5_ARB 0x882A
+#define GL_DRAW_BUFFER6_ARB 0x882B
+#define GL_DRAW_BUFFER7_ARB 0x882C
+#define GL_DRAW_BUFFER8_ARB 0x882D
+#define GL_DRAW_BUFFER9_ARB 0x882E
+#define GL_DRAW_BUFFER10_ARB 0x882F
+#define GL_DRAW_BUFFER11_ARB 0x8830
+#define GL_DRAW_BUFFER12_ARB 0x8831
+#define GL_DRAW_BUFFER13_ARB 0x8832
+#define GL_DRAW_BUFFER14_ARB 0x8833
+#define GL_DRAW_BUFFER15_ARB 0x8834
+#endif
+extern void (GLAPIENTRY *qglDrawBuffersARB)(GLsizei n, const GLenum *bufs);
+
+// GL_ARB_texture_float
+#ifndef GL_RGBA32F_ARB
+#define GL_RGBA32F_ARB 0x8814
+#define GL_RGB32F_ARB 0x8815
+#define GL_ALPHA32F_ARB 0x8816
+#define GL_INTENSITY32F_ARB 0x8817
+#define GL_LUMINANCE32F_ARB 0x8818
+#define GL_LUMINANCE_ALPHA32F_ARB 0x8819
+#define GL_RGBA16F_ARB 0x881A
+#define GL_RGB16F_ARB 0x881B
+#define GL_ALPHA16F_ARB 0x881C
+#define GL_INTENSITY16F_ARB 0x881D
+#define GL_LUMINANCE16F_ARB 0x881E
+#define GL_LUMINANCE_ALPHA16F_ARB 0x881F
+#endif
+
+// GL_EXT_texture_sRGB
+#ifndef GL_SRGB_EXT
+#define GL_SRGB_EXT 0x8C40
+#define GL_SRGB8_EXT 0x8C41
+#define GL_SRGB_ALPHA_EXT 0x8C42
+#define GL_SRGB8_ALPHA8_EXT 0x8C43
+#define GL_SLUMINANCE_ALPHA_EXT 0x8C44
+#define GL_SLUMINANCE8_ALPHA8_EXT 0x8C45
+#define GL_SLUMINANCE_EXT 0x8C46
+#define GL_SLUMINANCE8_EXT 0x8C47
+#define GL_COMPRESSED_SRGB_EXT 0x8C48
+#define GL_COMPRESSED_SRGB_ALPHA_EXT 0x8C49
+#define GL_COMPRESSED_SLUMINANCE_EXT 0x8C4A
+#define GL_COMPRESSED_SLUMINANCE_ALPHA_EXT 0x8C4B
+#define GL_COMPRESSED_SRGB_S3TC_DXT1_EXT 0x8C4C
+#define GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT 0x8C4D
+#define GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT 0x8C4E
+#define GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT 0x8C4F
+#endif
+
+extern void (GLAPIENTRY *qglScissor)(GLint x, GLint y, GLsizei width, GLsizei height);