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diff --git a/src/rend2/qgl.h b/src/rend2/qgl.h
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+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+
+This file is part of Quake III Arena source code.
+
+Quake III Arena source code is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Quake III Arena source code is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Quake III Arena source code; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+===========================================================================
+*/
+/*
+** QGL.H
+*/
+
+#ifndef __QGL_H__
+#define __QGL_H__
+
+#ifdef USE_LOCAL_HEADERS
+# include "SDL_opengl.h"
+#else
+# include <SDL_opengl.h>
+#endif
+
+extern void (APIENTRYP qglActiveTextureARB) (GLenum texture);
+extern void (APIENTRYP qglClientActiveTextureARB) (GLenum texture);
+extern void (APIENTRYP qglMultiTexCoord2fARB) (GLenum target, GLfloat s, GLfloat t);
+
+extern void (APIENTRYP qglLockArraysEXT) (GLint first, GLsizei count);
+extern void (APIENTRYP qglUnlockArraysEXT) (void);
+
+// GL_EXT_draw_range_elements
+extern void (APIENTRY * qglDrawRangeElementsEXT) (GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
+
+// GL_EXT_multi_draw_arrays
+extern void (APIENTRY * qglMultiDrawArraysEXT) (GLenum, GLint *, GLsizei *, GLsizei);
+extern void (APIENTRY * qglMultiDrawElementsEXT) (GLenum, const GLsizei *, GLenum, const GLvoid **, GLsizei);
+
+// GL_ARB_shading_language_100
+#ifndef GL_ARB_shading_language_100
+#define GL_ARB_shading_language_100
+#define GL_SHADING_LANGUAGE_VERSION_ARB 0x8B8C
+#endif
+
+// GL_ARB_vertex_program
+extern void (APIENTRY * qglVertexAttrib4fARB) (GLuint, GLfloat, GLfloat, GLfloat, GLfloat);
+extern void (APIENTRY * qglVertexAttrib4fvARB) (GLuint, const GLfloat *);
+extern void (APIENTRY * qglVertexAttribPointerARB) (GLuint index, GLint size, GLenum type, GLboolean normalized,
+ GLsizei stride, const GLvoid * pointer);
+extern void (APIENTRY * qglEnableVertexAttribArrayARB) (GLuint index);
+extern void (APIENTRY * qglDisableVertexAttribArrayARB) (GLuint index);
+
+// GL_ARB_vertex_buffer_object
+extern void (APIENTRY * qglBindBufferARB) (GLenum target, GLuint buffer);
+extern void (APIENTRY * qglDeleteBuffersARB) (GLsizei n, const GLuint * buffers);
+extern void (APIENTRY * qglGenBuffersARB) (GLsizei n, GLuint * buffers);
+extern GLboolean(APIENTRY * qglIsBufferARB) (GLuint buffer);
+extern void (APIENTRY * qglBufferDataARB) (GLenum target, GLsizeiptrARB size, const GLvoid * data, GLenum usage);
+extern void (APIENTRY * qglBufferSubDataARB) (GLenum target, GLintptrARB offset, GLsizeiptrARB size, const GLvoid * data);
+extern void (APIENTRY * qglGetBufferSubDataARB) (GLenum target, GLintptrARB offset, GLsizeiptrARB size, GLvoid * data);
+extern void (APIENTRY * qglGetBufferParameterivARB) (GLenum target, GLenum pname, GLint * params);
+extern void (APIENTRY * qglGetBufferPointervARB) (GLenum target, GLenum pname, GLvoid * *params);
+
+// GL_ARB_shader_objects
+extern void (APIENTRY * qglDeleteObjectARB) (GLhandleARB obj);
+extern GLhandleARB(APIENTRY * qglGetHandleARB) (GLenum pname);
+extern void (APIENTRY * qglDetachObjectARB) (GLhandleARB containerObj, GLhandleARB attachedObj);
+extern GLhandleARB(APIENTRY * qglCreateShaderObjectARB) (GLenum shaderType);
+extern void (APIENTRY * qglShaderSourceARB) (GLhandleARB shaderObj, GLsizei count, const GLcharARB * *string,
+ const GLint * length);
+extern void (APIENTRY * qglCompileShaderARB) (GLhandleARB shaderObj);
+extern GLhandleARB(APIENTRY * qglCreateProgramObjectARB) (void);
+extern void (APIENTRY * qglAttachObjectARB) (GLhandleARB containerObj, GLhandleARB obj);
+extern void (APIENTRY * qglLinkProgramARB) (GLhandleARB programObj);
+extern void (APIENTRY * qglUseProgramObjectARB) (GLhandleARB programObj);
+extern void (APIENTRY * qglValidateProgramARB) (GLhandleARB programObj);
+extern void (APIENTRY * qglUniform1fARB) (GLint location, GLfloat v0);
+extern void (APIENTRY * qglUniform2fARB) (GLint location, GLfloat v0, GLfloat v1);
+extern void (APIENTRY * qglUniform3fARB) (GLint location, GLfloat v0, GLfloat v1, GLfloat v2);
+extern void (APIENTRY * qglUniform4fARB) (GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
+extern void (APIENTRY * qglUniform1iARB) (GLint location, GLint v0);
+extern void (APIENTRY * qglUniform2iARB) (GLint location, GLint v0, GLint v1);
+extern void (APIENTRY * qglUniform3iARB) (GLint location, GLint v0, GLint v1, GLint v2);
+extern void (APIENTRY * qglUniform4iARB) (GLint location, GLint v0, GLint v1, GLint v2, GLint v3);
+extern void (APIENTRY * qglUniform1fvARB) (GLint location, GLsizei count, const GLfloat * value);
+extern void (APIENTRY * qglUniform2fvARB) (GLint location, GLsizei count, const GLfloat * value);
+extern void (APIENTRY * qglUniform3fvARB) (GLint location, GLsizei count, const GLfloat * value);
+extern void (APIENTRY * qglUniform4fvARB) (GLint location, GLsizei count, const GLfloat * value);
+extern void (APIENTRY * qglUniform2ivARB) (GLint location, GLsizei count, const GLint * value);
+extern void (APIENTRY * qglUniform3ivARB) (GLint location, GLsizei count, const GLint * value);
+extern void (APIENTRY * qglUniform4ivARB) (GLint location, GLsizei count, const GLint * value);
+extern void (APIENTRY * qglUniformMatrix2fvARB) (GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+extern void (APIENTRY * qglUniformMatrix3fvARB) (GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+extern void (APIENTRY * qglUniformMatrix4fvARB) (GLint location, GLsizei count, GLboolean transpose, const GLfloat * value);
+extern void (APIENTRY * qglGetObjectParameterfvARB) (GLhandleARB obj, GLenum pname, GLfloat * params);
+extern void (APIENTRY * qglGetObjectParameterivARB) (GLhandleARB obj, GLenum pname, GLint * params);
+extern void (APIENTRY * qglGetInfoLogARB) (GLhandleARB obj, GLsizei maxLength, GLsizei * length, GLcharARB * infoLog);
+extern void (APIENTRY * qglGetAttachedObjectsARB) (GLhandleARB containerObj, GLsizei maxCount, GLsizei * count,
+ GLhandleARB * obj);
+extern GLint(APIENTRY * qglGetUniformLocationARB) (GLhandleARB programObj, const GLcharARB * name);
+extern void (APIENTRY * qglGetActiveUniformARB) (GLhandleARB programObj, GLuint index, GLsizei maxIndex, GLsizei * length,
+ GLint * size, GLenum * type, GLcharARB * name);
+extern void (APIENTRY * qglGetUniformfvARB) (GLhandleARB programObj, GLint location, GLfloat * params);
+extern void (APIENTRY * qglGetUniformivARB) (GLhandleARB programObj, GLint location, GLint * params);
+extern void (APIENTRY * qglGetShaderSourceARB) (GLhandleARB obj, GLsizei maxLength, GLsizei * length, GLcharARB * source);
+
+// GL_ARB_vertex_shader
+extern void (APIENTRY * qglBindAttribLocationARB) (GLhandleARB programObj, GLuint index, const GLcharARB * name);
+extern void (APIENTRY * qglGetActiveAttribARB) (GLhandleARB programObj, GLuint index, GLsizei maxLength, GLsizei * length,
+ GLint * size, GLenum * type, GLcharARB * name);
+extern GLint(APIENTRY * qglGetAttribLocationARB) (GLhandleARB programObj, const GLcharARB * name);
+
+// GL_ARB_texture_compression
+extern void (APIENTRY * qglCompressedTexImage3DARB)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height,
+ GLsizei depth, GLint border, GLsizei imageSize, const GLvoid *data);
+extern void (APIENTRY * qglCompressedTexImage2DARB)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height,
+ GLint border, GLsizei imageSize, const GLvoid *data);
+extern void (APIENTRY * qglCompressedTexImage1DARB)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLint border,
+ GLsizei imageSize, const GLvoid *data);
+extern void (APIENTRY * qglCompressedTexSubImage3DARB)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset,
+ GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const GLvoid *data);
+extern void (APIENTRY * qglCompressedTexSubImage2DARB)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width,
+ GLsizei height, GLenum format, GLsizei imageSize, const GLvoid *data);
+extern void (APIENTRY * qglCompressedTexSubImage1DARB)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format,
+ GLsizei imageSize, const GLvoid *data);
+extern void (APIENTRY * qglGetCompressedTexImageARB)(GLenum target, GLint lod,
+ GLvoid *img);
+
+// GL_NVX_gpu_memory_info
+#ifndef GL_NVX_gpu_memory_info
+#define GL_NVX_gpu_memory_info
+#define GL_GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX 0x9047
+#define GL_GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX 0x9048
+#define GL_GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX 0x9049
+#define GL_GPU_MEMORY_INFO_EVICTION_COUNT_NVX 0x904A
+#define GL_GPU_MEMORY_INFO_EVICTED_MEMORY_NVX 0x904B
+#endif
+
+// GL_ATI_meminfo
+#ifndef GL_ATI_meminfo
+#define GL_ATI_meminfo
+#define GL_VBO_FREE_MEMORY_ATI 0x87FB
+#define GL_TEXTURE_FREE_MEMORY_ATI 0x87FC
+#define GL_RENDERBUFFER_FREE_MEMORY_ATI 0x87FD
+#endif
+
+// GL_ARB_texture_float
+#ifndef GL_ARB_texture_float
+#define GL_ARB_texture_float
+#define GL_TEXTURE_RED_TYPE_ARB 0x8C10
+#define GL_TEXTURE_GREEN_TYPE_ARB 0x8C11
+#define GL_TEXTURE_BLUE_TYPE_ARB 0x8C12
+#define GL_TEXTURE_ALPHA_TYPE_ARB 0x8C13
+#define GL_TEXTURE_LUMINANCE_TYPE_ARB 0x8C14
+#define GL_TEXTURE_INTENSITY_TYPE_ARB 0x8C15
+#define GL_TEXTURE_DEPTH_TYPE_ARB 0x8C16
+#define GL_UNSIGNED_NORMALIZED_ARB 0x8C17
+#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
+
+#ifndef GL_ARB_half_float_pixel
+#define GL_ARB_half_float_pixel
+#define GL_HALF_FLOAT_ARB 0x140B
+#endif
+
+// GL_EXT_framebuffer_object
+extern GLboolean (APIENTRY * qglIsRenderbufferEXT)(GLuint renderbuffer);
+extern void (APIENTRY * qglBindRenderbufferEXT)(GLenum target, GLuint renderbuffer);
+extern void (APIENTRY * qglDeleteRenderbuffersEXT)(GLsizei n, const GLuint *renderbuffers);
+extern void (APIENTRY * qglGenRenderbuffersEXT)(GLsizei n, GLuint *renderbuffers);
+extern void (APIENTRY * qglRenderbufferStorageEXT)(GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+extern void (APIENTRY * qglGetRenderbufferParameterivEXT)(GLenum target, GLenum pname, GLint *params);
+extern GLboolean (APIENTRY * qglIsFramebufferEXT)(GLuint framebuffer);
+extern void (APIENTRY * qglBindFramebufferEXT)(GLenum target, GLuint framebuffer);
+extern void (APIENTRY * qglDeleteFramebuffersEXT)(GLsizei n, const GLuint *framebuffers);
+extern void (APIENTRY * qglGenFramebuffersEXT)(GLsizei n, GLuint *framebuffers);
+extern GLenum (APIENTRY * qglCheckFramebufferStatusEXT)(GLenum target);
+extern void (APIENTRY * qglFramebufferTexture1DEXT)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture,
+ GLint level);
+extern void (APIENTRY * qglFramebufferTexture2DEXT)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture,
+ GLint level);
+extern void (APIENTRY * qglFramebufferTexture3DEXT)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture,
+ GLint level, GLint zoffset);
+extern void (APIENTRY * qglFramebufferRenderbufferEXT)(GLenum target, GLenum attachment, GLenum renderbuffertarget,
+ GLuint renderbuffer);
+extern void (APIENTRY * qglGetFramebufferAttachmentParameterivEXT)(GLenum target, GLenum attachment, GLenum pname, GLint *params);
+extern void (APIENTRY * qglGenerateMipmapEXT)(GLenum target);
+
+#ifndef GL_EXT_framebuffer_object
+#define GL_EXT_framebuffer_object
+#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
+
+// GL_EXT_packed_depth_stencil
+#ifndef GL_EXT_packed_depth_stencil
+#define GL_EXT_packed_depth_stencil
+#define GL_DEPTH_STENCIL_EXT 0x84F9
+#define GL_UNSIGNED_INT_24_8_EXT 0x84FA
+#define GL_DEPTH24_STENCIL8_EXT 0x88F0
+#define GL_TEXTURE_STENCIL_SIZE_EXT 0x88F1
+#endif
+
+// GL_ARB_occlusion_query
+extern void (APIENTRY * qglGenQueriesARB)(GLsizei n, GLuint *ids);
+extern void (APIENTRY * qglDeleteQueriesARB)(GLsizei n, const GLuint *ids);
+extern GLboolean (APIENTRY * qglIsQueryARB)(GLuint id);
+extern void (APIENTRY * qglBeginQueryARB)(GLenum target, GLuint id);
+extern void (APIENTRY * qglEndQueryARB)(GLenum target);
+extern void (APIENTRY * qglGetQueryivARB)(GLenum target, GLenum pname, GLint *params);
+extern void (APIENTRY * qglGetQueryObjectivARB)(GLuint id, GLenum pname, GLint *params);
+extern void (APIENTRY * qglGetQueryObjectuivARB)(GLuint id, GLenum pname, GLuint *params);
+
+#ifndef GL_ARB_occlusion_query
+#define GL_ARB_occlusion_query
+#define GL_SAMPLES_PASSED_ARB 0x8914
+#define GL_QUERY_COUNTER_BITS_ARB 0x8864
+#define GL_CURRENT_QUERY_ARB 0x8865
+#define GL_QUERY_RESULT_ARB 0x8866
+#define GL_QUERY_RESULT_AVAILABLE_ARB 0x8867
+#endif
+
+// GL_EXT_framebuffer_blit
+extern void (APIENTRY * qglBlitFramebufferEXT)(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+ GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+ GLbitfield mask, GLenum filter);
+
+#ifndef GL_EXT_framebuffer_blit
+#define GL_EXT_framebuffer_blit
+#define GL_READ_FRAMEBUFFER_EXT 0x8CA8
+#define GL_DRAW_FRAMEBUFFER_EXT 0x8CA9
+#define GL_DRAW_FRAMEBUFFER_BINDING_EXT 0x8CA6
+#define GL_READ_FRAMEBUFFER_BINDING_EXT 0x8CAA
+#endif
+
+// GL_EXT_framebuffer_multisample
+extern void (APIENTRY * qglRenderbufferStorageMultisampleEXT)(GLenum target, GLsizei samples,
+ GLenum internalformat, GLsizei width, GLsizei height);
+
+#ifndef GL_EXT_framebuffer_multisample
+#define GL_EXT_framebuffer_multisample
+#define GL_RENDERBUFFER_SAMPLES_EXT 0x8CAB
+#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT 0x8D56
+#define GL_MAX_SAMPLES_EXT 0x8D57
+#endif
+
+#ifndef GL_EXT_texture_sRGB
+#define GL_EXT_texture_sRGB
+#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
+
+#ifndef GL_EXT_framebuffer_sRGB
+#define GL_EXT_framebuffer_sRGB
+#define GL_FRAMEBUFFER_SRGB_EXT 0x8DB9
+#endif
+
+#ifndef GL_EXT_texture_compression_latc
+#define GL_EXT_texture_compression_latc
+#define GL_COMPRESSED_LUMINANCE_LATC1_EXT 0x8C70
+#define GL_COMPRESSED_SIGNED_LUMINANCE_LATC1_EXT 0x8C71
+#define GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT 0x8C72
+#define GL_COMPRESSED_SIGNED_LUMINANCE_ALPHA_LATC2_EXT 0x8C73
+#endif
+
+#ifndef GL_ARB_texture_compression_bptc
+#define GL_ARB_texture_compression_bptc
+#define GL_COMPRESSED_RGBA_BPTC_UNORM_ARB 0x8E8C
+#define GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB 0x8E8D
+#define GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB 0x8E8E
+#define GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB 0x8E8F
+#endif
+
+// GL_ARB_draw_buffers
+extern void (APIENTRY * qglDrawBuffersARB)(GLsizei n, const GLenum *bufs);
+#ifndef GL_ARB_draw_buffers
+#define GL_ARB_draw_buffers
+#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
+
+#ifndef GL_ARB_depth_clamp
+#define GL_ARB_depth_clamp
+#define GL_DEPTH_CLAMP 0x864F
+#endif
+
+#if defined(WIN32)
+// WGL_ARB_create_context
+#ifndef WGL_ARB_create_context
+#define WGL_CONTEXT_MAJOR_VERSION_ARB 0x2091
+#define WGL_CONTEXT_MINOR_VERSION_ARB 0x2092
+#define WGL_CONTEXT_LAYER_PLANE_ARB 0x2093
+#define WGL_CONTEXT_FLAGS_ARB 0x2094
+#define WGL_CONTEXT_PROFILE_MASK_ARB 0x9126
+#define WGL_CONTEXT_DEBUG_BIT_ARB 0x0001
+#define WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x0002
+#define WGL_CONTEXT_CORE_PROFILE_BIT_ARB 0x00000001
+#define WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB 0x00000002
+#define ERROR_INVALID_VERSION_ARB 0x2095
+#define ERROR_INVALID_PROFILE_ARB 0x2096
+#endif
+
+extern HGLRC(APIENTRY * qwglCreateContextAttribsARB) (HDC hdC, HGLRC hShareContext, const int *attribList);
+#endif
+
+#if 0 //defined(__linux__)
+// GLX_ARB_create_context
+#ifndef GLX_ARB_create_context
+#define GLX_CONTEXT_DEBUG_BIT_ARB 0x00000001
+#define GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x00000002
+#define GLX_CONTEXT_MAJOR_VERSION_ARB 0x2091
+#define GLX_CONTEXT_MINOR_VERSION_ARB 0x2092
+#define GLX_CONTEXT_FLAGS_ARB 0x2094
+#endif
+
+extern GLXContext (APIENTRY * qglXCreateContextAttribsARB) (Display *dpy, GLXFBConfig config, GLXContext share_context, Bool direct, const int *attrib_list);
+#endif
+
+//===========================================================================
+
+#define qglAccum glAccum
+#define qglAlphaFunc glAlphaFunc
+#define qglAreTexturesResident glAreTexturesResident
+#define qglArrayElement glArrayElement
+#define qglBegin glBegin
+#define qglBindTexture glBindTexture
+#define qglBitmap glBitmap
+#define qglBlendFunc glBlendFunc
+#define qglCallList glCallList
+#define qglCallLists glCallLists
+#define qglClear glClear
+#define qglClearAccum glClearAccum
+#define qglClearColor glClearColor
+#define qglClearDepth glClearDepth
+#define qglClearIndex glClearIndex
+#define qglClearStencil glClearStencil
+#define qglClipPlane glClipPlane
+#define qglColor3b glColor3b
+#define qglColor3bv glColor3bv
+#define qglColor3d glColor3d
+#define qglColor3dv glColor3dv
+#define qglColor3f glColor3f
+#define qglColor3fv glColor3fv
+#define qglColor3i glColor3i
+#define qglColor3iv glColor3iv
+#define qglColor3s glColor3s
+#define qglColor3sv glColor3sv
+#define qglColor3ub glColor3ub
+#define qglColor3ubv glColor3ubv
+#define qglColor3ui glColor3ui
+#define qglColor3uiv glColor3uiv
+#define qglColor3us glColor3us
+#define qglColor3usv glColor3usv
+#define qglColor4b glColor4b
+#define qglColor4bv glColor4bv
+#define qglColor4d glColor4d
+#define qglColor4dv glColor4dv
+#define qglColor4f glColor4f
+#define qglColor4fv glColor4fv
+#define qglColor4i glColor4i
+#define qglColor4iv glColor4iv
+#define qglColor4s glColor4s
+#define qglColor4sv glColor4sv
+#define qglColor4ub glColor4ub
+#define qglColor4ubv glColor4ubv
+#define qglColor4ui glColor4ui
+#define qglColor4uiv glColor4uiv
+#define qglColor4us glColor4us
+#define qglColor4usv glColor4usv
+#define qglColorMask glColorMask
+#define qglColorMaterial glColorMaterial
+#define qglColorPointer glColorPointer
+#define qglCopyPixels glCopyPixels
+#define qglCopyTexImage1D glCopyTexImage1D
+#define qglCopyTexImage2D glCopyTexImage2D
+#define qglCopyTexSubImage1D glCopyTexSubImage1D
+#define qglCopyTexSubImage2D glCopyTexSubImage2D
+#define qglCullFace glCullFace
+#define qglDeleteLists glDeleteLists
+#define qglDeleteTextures glDeleteTextures
+#define qglDepthFunc glDepthFunc
+#define qglDepthMask glDepthMask
+#define qglDepthRange glDepthRange
+#define qglDisable glDisable
+#define qglDisableClientState glDisableClientState
+#define qglDrawArrays glDrawArrays
+#define qglDrawBuffer glDrawBuffer
+#define qglDrawElements glDrawElements
+#define qglDrawPixels glDrawPixels
+#define qglEdgeFlag glEdgeFlag
+#define qglEdgeFlagPointer glEdgeFlagPointer
+#define qglEdgeFlagv glEdgeFlagv
+#define qglEnable glEnable
+#define qglEnableClientState glEnableClientState
+#define qglEnd glEnd
+#define qglEndList glEndList
+#define qglEvalCoord1d glEvalCoord1d
+#define qglEvalCoord1dv glEvalCoord1dv
+#define qglEvalCoord1f glEvalCoord1f
+#define qglEvalCoord1fv glEvalCoord1fv
+#define qglEvalCoord2d glEvalCoord2d
+#define qglEvalCoord2dv glEvalCoord2dv
+#define qglEvalCoord2f glEvalCoord2f
+#define qglEvalCoord2fv glEvalCoord2fv
+#define qglEvalMesh1 glEvalMesh1
+#define qglEvalMesh2 glEvalMesh2
+#define qglEvalPoint1 glEvalPoint1
+#define qglEvalPoint2 glEvalPoint2
+#define qglFeedbackBuffer glFeedbackBuffer
+#define qglFinish glFinish
+#define qglFlush glFlush
+#define qglFogf glFogf
+#define qglFogfv glFogfv
+#define qglFogi glFogi
+#define qglFogiv glFogiv
+#define qglFrontFace glFrontFace
+#define qglFrustum glFrustum
+#define qglGenLists glGenLists
+#define qglGenTextures glGenTextures
+#define qglGetBooleanv glGetBooleanv
+#define qglGetClipPlane glGetClipPlane
+#define qglGetDoublev glGetDoublev
+#define qglGetError glGetError
+#define qglGetFloatv glGetFloatv
+#define qglGetIntegerv glGetIntegerv
+#define qglGetLightfv glGetLightfv
+#define qglGetLightiv glGetLightiv
+#define qglGetMapdv glGetMapdv
+#define qglGetMapfv glGetMapfv
+#define qglGetMapiv glGetMapiv
+#define qglGetMaterialfv glGetMaterialfv
+#define qglGetMaterialiv glGetMaterialiv
+#define qglGetPixelMapfv glGetPixelMapfv
+#define qglGetPixelMapuiv glGetPixelMapuiv
+#define qglGetPixelMapusv glGetPixelMapusv
+#define qglGetPointerv glGetPointerv
+#define qglGetPolygonStipple glGetPolygonStipple
+#define qglGetString glGetString
+#define qglGetTexGendv glGetTexGendv
+#define qglGetTexGenfv glGetTexGenfv
+#define qglGetTexGeniv glGetTexGeniv
+#define qglGetTexImage glGetTexImage
+#define qglGetTexLevelParameterfv glGetTexLevelParameterfv
+#define qglGetTexLevelParameteriv glGetTexLevelParameteriv
+#define qglGetTexParameterfv glGetTexParameterfv
+#define qglGetTexParameteriv glGetTexParameteriv
+#define qglHint glHint
+#define qglIndexMask glIndexMask
+#define qglIndexPointer glIndexPointer
+#define qglIndexd glIndexd
+#define qglIndexdv glIndexdv
+#define qglIndexf glIndexf
+#define qglIndexfv glIndexfv
+#define qglIndexi glIndexi
+#define qglIndexiv glIndexiv
+#define qglIndexs glIndexs
+#define qglIndexsv glIndexsv
+#define qglIndexub glIndexub
+#define qglIndexubv glIndexubv
+#define qglInitNames glInitNames
+#define qglInterleavedArrays glInterleavedArrays
+#define qglIsEnabled glIsEnabled
+#define qglIsList glIsList
+#define qglIsTexture glIsTexture
+#define qglLightModelf glLightModelf
+#define qglLightModelfv glLightModelfv
+#define qglLightModeli glLightModeli
+#define qglLightModeliv glLightModeliv
+#define qglLightf glLightf
+#define qglLightfv glLightfv
+#define qglLighti glLighti
+#define qglLightiv glLightiv
+#define qglLineStipple glLineStipple
+#define qglLineWidth glLineWidth
+#define qglListBase glListBase
+#define qglLoadIdentity glLoadIdentity
+#define qglLoadMatrixd glLoadMatrixd
+#define qglLoadMatrixf glLoadMatrixf
+#define qglLoadName glLoadName
+#define qglLogicOp glLogicOp
+#define qglMap1d glMap1d
+#define qglMap1f glMap1f
+#define qglMap2d glMap2d
+#define qglMap2f glMap2f
+#define qglMapGrid1d glMapGrid1d
+#define qglMapGrid1f glMapGrid1f
+#define qglMapGrid2d glMapGrid2d
+#define qglMapGrid2f glMapGrid2f
+#define qglMaterialf glMaterialf
+#define qglMaterialfv glMaterialfv
+#define qglMateriali glMateriali
+#define qglMaterialiv glMaterialiv
+#define qglMatrixMode glMatrixMode
+#define qglMultMatrixd glMultMatrixd
+#define qglMultMatrixf glMultMatrixf
+#define qglNewList glNewList
+#define qglNormal3b glNormal3b
+#define qglNormal3bv glNormal3bv
+#define qglNormal3d glNormal3d
+#define qglNormal3dv glNormal3dv
+#define qglNormal3f glNormal3f
+#define qglNormal3fv glNormal3fv
+#define qglNormal3i glNormal3i
+#define qglNormal3iv glNormal3iv
+#define qglNormal3s glNormal3s
+#define qglNormal3sv glNormal3sv
+#define qglNormalPointer glNormalPointer
+#define qglOrtho glOrtho
+#define qglPassThrough glPassThrough
+#define qglPixelMapfv glPixelMapfv
+#define qglPixelMapuiv glPixelMapuiv
+#define qglPixelMapusv glPixelMapusv
+#define qglPixelStoref glPixelStoref
+#define qglPixelStorei glPixelStorei
+#define qglPixelTransferf glPixelTransferf
+#define qglPixelTransferi glPixelTransferi
+#define qglPixelZoom glPixelZoom
+#define qglPointSize glPointSize
+#define qglPolygonMode glPolygonMode
+#define qglPolygonOffset glPolygonOffset
+#define qglPolygonStipple glPolygonStipple
+#define qglPopAttrib glPopAttrib
+#define qglPopClientAttrib glPopClientAttrib
+#define qglPopMatrix glPopMatrix
+#define qglPopName glPopName
+#define qglPrioritizeTextures glPrioritizeTextures
+#define qglPushAttrib glPushAttrib
+#define qglPushClientAttrib glPushClientAttrib
+#define qglPushMatrix glPushMatrix
+#define qglPushName glPushName
+#define qglRasterPos2d glRasterPos2d
+#define qglRasterPos2dv glRasterPos2dv
+#define qglRasterPos2f glRasterPos2f
+#define qglRasterPos2fv glRasterPos2fv
+#define qglRasterPos2i glRasterPos2i
+#define qglRasterPos2iv glRasterPos2iv
+#define qglRasterPos2s glRasterPos2s
+#define qglRasterPos2sv glRasterPos2sv
+#define qglRasterPos3d glRasterPos3d
+#define qglRasterPos3dv glRasterPos3dv
+#define qglRasterPos3f glRasterPos3f
+#define qglRasterPos3fv glRasterPos3fv
+#define qglRasterPos3i glRasterPos3i
+#define qglRasterPos3iv glRasterPos3iv
+#define qglRasterPos3s glRasterPos3s
+#define qglRasterPos3sv glRasterPos3sv
+#define qglRasterPos4d glRasterPos4d
+#define qglRasterPos4dv glRasterPos4dv
+#define qglRasterPos4f glRasterPos4f
+#define qglRasterPos4fv glRasterPos4fv
+#define qglRasterPos4i glRasterPos4i
+#define qglRasterPos4iv glRasterPos4iv
+#define qglRasterPos4s glRasterPos4s
+#define qglRasterPos4sv glRasterPos4sv
+#define qglReadBuffer glReadBuffer
+#define qglReadPixels glReadPixels
+#define qglRectd glRectd
+#define qglRectdv glRectdv
+#define qglRectf glRectf
+#define qglRectfv glRectfv
+#define qglRecti glRecti
+#define qglRectiv glRectiv
+#define qglRects glRects
+#define qglRectsv glRectsv
+#define qglRenderMode glRenderMode
+#define qglRotated glRotated
+#define qglRotatef glRotatef
+#define qglScaled glScaled
+#define qglScalef glScalef
+#define qglScissor glScissor
+#define qglSelectBuffer glSelectBuffer
+#define qglShadeModel glShadeModel
+#define qglStencilFunc glStencilFunc
+#define qglStencilMask glStencilMask
+#define qglStencilOp glStencilOp
+#define qglTexCoord1d glTexCoord1d
+#define qglTexCoord1dv glTexCoord1dv
+#define qglTexCoord1f glTexCoord1f
+#define qglTexCoord1fv glTexCoord1fv
+#define qglTexCoord1i glTexCoord1i
+#define qglTexCoord1iv glTexCoord1iv
+#define qglTexCoord1s glTexCoord1s
+#define qglTexCoord1sv glTexCoord1sv
+#define qglTexCoord2d glTexCoord2d
+#define qglTexCoord2dv glTexCoord2dv
+#define qglTexCoord2f glTexCoord2f
+#define qglTexCoord2fv glTexCoord2fv
+#define qglTexCoord2i glTexCoord2i
+#define qglTexCoord2iv glTexCoord2iv
+#define qglTexCoord2s glTexCoord2s
+#define qglTexCoord2sv glTexCoord2sv
+#define qglTexCoord3d glTexCoord3d
+#define qglTexCoord3dv glTexCoord3dv
+#define qglTexCoord3f glTexCoord3f
+#define qglTexCoord3fv glTexCoord3fv
+#define qglTexCoord3i glTexCoord3i
+#define qglTexCoord3iv glTexCoord3iv
+#define qglTexCoord3s glTexCoord3s
+#define qglTexCoord3sv glTexCoord3sv
+#define qglTexCoord4d glTexCoord4d
+#define qglTexCoord4dv glTexCoord4dv
+#define qglTexCoord4f glTexCoord4f
+#define qglTexCoord4fv glTexCoord4fv
+#define qglTexCoord4i glTexCoord4i
+#define qglTexCoord4iv glTexCoord4iv
+#define qglTexCoord4s glTexCoord4s
+#define qglTexCoord4sv glTexCoord4sv
+#define qglTexCoordPointer glTexCoordPointer
+#define qglTexEnvf glTexEnvf
+#define qglTexEnvfv glTexEnvfv
+#define qglTexEnvi glTexEnvi
+#define qglTexEnviv glTexEnviv
+#define qglTexGend glTexGend
+#define qglTexGendv glTexGendv
+#define qglTexGenf glTexGenf
+#define qglTexGenfv glTexGenfv
+#define qglTexGeni glTexGeni
+#define qglTexGeniv glTexGeniv
+#define qglTexImage1D glTexImage1D
+#define qglTexImage2D glTexImage2D
+#define qglTexParameterf glTexParameterf
+#define qglTexParameterfv glTexParameterfv
+#define qglTexParameteri glTexParameteri
+#define qglTexParameteriv glTexParameteriv
+#define qglTexSubImage1D glTexSubImage1D
+#define qglTexSubImage2D glTexSubImage2D
+#define qglTranslated glTranslated
+#define qglTranslatef glTranslatef
+#define qglVertex2d glVertex2d
+#define qglVertex2dv glVertex2dv
+#define qglVertex2f glVertex2f
+#define qglVertex2fv glVertex2fv
+#define qglVertex2i glVertex2i
+#define qglVertex2iv glVertex2iv
+#define qglVertex2s glVertex2s
+#define qglVertex2sv glVertex2sv
+#define qglVertex3d glVertex3d
+#define qglVertex3dv glVertex3dv
+#define qglVertex3f glVertex3f
+#define qglVertex3fv glVertex3fv
+#define qglVertex3i glVertex3i
+#define qglVertex3iv glVertex3iv
+#define qglVertex3s glVertex3s
+#define qglVertex3sv glVertex3sv
+#define qglVertex4d glVertex4d
+#define qglVertex4dv glVertex4dv
+#define qglVertex4f glVertex4f
+#define qglVertex4fv glVertex4fv
+#define qglVertex4i glVertex4i
+#define qglVertex4iv glVertex4iv
+#define qglVertex4s glVertex4s
+#define qglVertex4sv glVertex4sv
+#define qglVertexPointer glVertexPointer
+#define qglViewport glViewport
+
+#endif