/*
===========================================================================

Return to Castle Wolfenstein single player GPL Source Code
Copyright (C) 1999-2010 id Software LLC, a ZeniMax Media company. 

This file is part of the Return to Castle Wolfenstein single player GPL Source Code (RTCW SP Source Code).  

RTCW SP 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 3 of the License, or
(at your option) any later version.

RTCW SP 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 RTCW SP Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the RTCW SP Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the RTCW SP Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/

/*
** QGL.H
*/

#ifndef __QGL_H__
#define __QGL_H__

#if defined( __LINT__ )

#include <GL/gl.h>

#elif defined( _WIN32 )

#pragma warning (disable: 4201)
#pragma warning (disable: 4214)
#pragma warning (disable: 4514)
#pragma warning (disable: 4032)
#pragma warning (disable: 4201)
#pragma warning (disable: 4214)
#include <windows.h>
#include <gl/gl.h>

#elif defined( MACOS_X )

#include "macosx_glimp.h"

#elif defined( __linux__ )

#include <GL/gl.h>
#include <GL/glx.h>
// bk001129 - from cvs1.17 (mkv)
#if defined( __FX__ )
#include <GL/fxmesa.h>
#endif

#elif defined( __FreeBSD__ ) // rb010123

#include <GL/gl.h>
#include <GL/glx.h>
#if defined( __FX__ )
#include <GL/fxmesa.h>
#endif

#else

#include <gl.h>

#endif


#ifndef APIENTRY
#define APIENTRY
#endif
#ifndef WINAPI
#define WINAPI
#endif


//===========================================================================

/*
** multitexture extension definitions
*/
#define GL_ACTIVE_TEXTURE_ARB               0x84E0
#define GL_CLIENT_ACTIVE_TEXTURE_ARB        0x84E1
#define GL_MAX_ACTIVE_TEXTURES_ARB          0x84E2

#define GL_TEXTURE0_ARB                     0x84C0
#define GL_TEXTURE1_ARB                     0x84C1
#define GL_TEXTURE2_ARB                     0x84C2
#define GL_TEXTURE3_ARB                     0x84C3

// TTimo: FIXME
// linux needs those prototypes
// GL_VERSION_1_2 is defined after #include <gl.h>
#if !defined( GL_VERSION_1_2 ) || defined( __linux__ )
typedef void ( APIENTRY * PFNGLMULTITEXCOORD1DARBPROC )( GLenum target, GLdouble s );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD1DVARBPROC )( GLenum target, const GLdouble *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD1FARBPROC )( GLenum target, GLfloat s );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD1FVARBPROC )( GLenum target, const GLfloat *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD1IARBPROC )( GLenum target, GLint s );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD1IVARBPROC )( GLenum target, const GLint *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD1SARBPROC )( GLenum target, GLshort s );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD1SVARBPROC )( GLenum target, const GLshort *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD2DARBPROC )( GLenum target, GLdouble s, GLdouble t );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD2DVARBPROC )( GLenum target, const GLdouble *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD2FARBPROC )( GLenum target, GLfloat s, GLfloat t );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD2FVARBPROC )( GLenum target, const GLfloat *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD2IARBPROC )( GLenum target, GLint s, GLint t );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD2IVARBPROC )( GLenum target, const GLint *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD2SARBPROC )( GLenum target, GLshort s, GLshort t );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD2SVARBPROC )( GLenum target, const GLshort *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD3DARBPROC )( GLenum target, GLdouble s, GLdouble t, GLdouble r );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD3DVARBPROC )( GLenum target, const GLdouble *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD3FARBPROC )( GLenum target, GLfloat s, GLfloat t, GLfloat r );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD3FVARBPROC )( GLenum target, const GLfloat *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD3IARBPROC )( GLenum target, GLint s, GLint t, GLint r );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD3IVARBPROC )( GLenum target, const GLint *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD3SARBPROC )( GLenum target, GLshort s, GLshort t, GLshort r );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD3SVARBPROC )( GLenum target, const GLshort *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD4DARBPROC )( GLenum target, GLdouble s, GLdouble t, GLdouble r, GLdouble q );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD4DVARBPROC )( GLenum target, const GLdouble *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD4FARBPROC )( GLenum target, GLfloat s, GLfloat t, GLfloat r, GLfloat q );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD4FVARBPROC )( GLenum target, const GLfloat *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD4IARBPROC )( GLenum target, GLint s, GLint t, GLint r, GLint q );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD4IVARBPROC )( GLenum target, const GLint *v );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD4SARBPROC )( GLenum target, GLshort s, GLshort t, GLshort r, GLshort q );
typedef void ( APIENTRY * PFNGLMULTITEXCOORD4SVARBPROC )( GLenum target, const GLshort *v );
typedef void ( APIENTRY * PFNGLACTIVETEXTUREARBPROC )( GLenum target );
typedef void ( APIENTRY * PFNGLCLIENTACTIVETEXTUREARBPROC )( GLenum target );
#endif

/*
** extension constants
*/

// GL_ATI_pn_triangles
#ifndef GL_ATI_pn_triangles
#define GL_ATI_pn_triangles 1

// GR - update enumerants
#define GL_PN_TRIANGLES_ATI                         0x87F0
#define GL_MAX_PN_TRIANGLES_TESSELATION_LEVEL_ATI   0x87F1
#define GL_PN_TRIANGLES_POINT_MODE_ATI              0x87F2
#define GL_PN_TRIANGLES_NORMAL_MODE_ATI             0x87F3
#define GL_PN_TRIANGLES_TESSELATION_LEVEL_ATI       0x87F4
#define GL_PN_TRIANGLES_POINT_MODE_LINEAR_ATI       0x87F5
#define GL_PN_TRIANGLES_POINT_MODE_CUBIC_ATI        0x87F6
#define GL_PN_TRIANGLES_NORMAL_MODE_LINEAR_ATI      0x87F7
#define GL_PN_TRIANGLES_NORMAL_MODE_QUADRATIC_ATI   0x87F8

typedef void ( APIENTRY * PFNGLPNTRIANGLESIATIPROC )( GLenum pname, GLint param );
typedef void ( APIENTRY * PFNGLPNTRIANGLESFATIPROC )( GLenum pname, GLfloat param );
#endif

// for NV fog distance
#ifndef GL_NV_fog_distance
#define GL_FOG_DISTANCE_MODE_NV           0x855A
#define GL_EYE_RADIAL_NV                  0x855B
#define GL_EYE_PLANE_ABSOLUTE_NV          0x855C
/* reuse GL_EYE_PLANE */
#endif

// S3TC compression constants
#define GL_RGB_S3TC                         0x83A0
#define GL_RGB4_S3TC                        0x83A1

// GL_EXT_texture_compression_s3tc constants
#define GL_COMPRESSED_RGB_S3TC_DXT1_EXT                   0x83F0
#define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT                  0x83F1
#define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT                  0x83F2
#define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT                  0x83F3

// GL_EXT_texture_filter_anisotropic constants
#ifndef GL_EXT_texture_filter_anisotropic
#define GL_TEXTURE_MAX_ANISOTROPY_EXT     0x84FE
#define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF
#endif

// extensions will be function pointers on all platforms

extern void ( APIENTRY * qglMultiTexCoord2fARB )( GLenum texture, GLfloat s, GLfloat t );
extern void ( APIENTRY * qglActiveTextureARB )( GLenum texture );
extern void ( APIENTRY * qglClientActiveTextureARB )( GLenum texture );

extern void ( APIENTRY * qglLockArraysEXT )( GLint, GLint );
extern void ( APIENTRY * qglUnlockArraysEXT )( void );

//----(SA)	added
extern void ( APIENTRY * qglPNTrianglesiATI )( GLenum pname, GLint param );
extern void ( APIENTRY * qglPNTrianglesfATI )( GLenum pname, GLfloat param );
//----(SA)	end

//===========================================================================

// non-windows systems will just redefine qgl* to gl*
#if !defined( _WIN32 ) && !defined( MACOS_X ) && !defined( __linux__ ) && !defined( __FreeBSD__ ) // rb010123

#include "qgl_linked.h"

#elif defined( MACOS_X )
// This includes #ifdefs for optional logging and GL error checking after every GL call as well as #defines to prevent incorrect usage of the non-'qgl' versions of the GL API.
#include "macosx_qgl.h"

#else

// windows systems use a function pointer for each call so we can load minidrivers

extern void ( APIENTRY * qglAccum )( GLenum op, GLfloat value );
extern void ( APIENTRY * qglAlphaFunc )( GLenum func, GLclampf ref );
extern GLboolean ( APIENTRY * qglAreTexturesResident )( GLsizei n, const GLuint *textures, GLboolean *residences );
extern void ( APIENTRY * qglArrayElement )( GLint i );
extern void ( APIENTRY * qglBegin )( GLenum mode );
extern void ( APIENTRY * qglBindTexture )( GLenum target, GLuint texture );
extern void ( APIENTRY * qglBitmap )( GLsizei width, GLsizei height, GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove, const GLubyte *bitmap );
extern void ( APIENTRY * qglBlendFunc )( GLenum sfactor, GLenum dfactor );
extern void ( APIENTRY * qglCallList )( GLuint list );
extern void ( APIENTRY * qglCallLists )( GLsizei n, GLenum type, const GLvoid *lists );
extern void ( APIENTRY * qglClear )( GLbitfield mask );
extern void ( APIENTRY * qglClearAccum )( GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha );
extern void ( APIENTRY * qglClearColor )( GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha );
extern void ( APIENTRY * qglClearDepth )( GLclampd depth );
extern void ( APIENTRY * qglClearIndex )( GLfloat c );
extern void ( APIENTRY * qglClearStencil )( GLint s );
extern void ( APIENTRY * qglClipPlane )( GLenum plane, const GLdouble *equation );
extern void ( APIENTRY * qglColor3b )( GLbyte red, GLbyte green, GLbyte blue );
extern void ( APIENTRY * qglColor3bv )( const GLbyte *v );
extern void ( APIENTRY * qglColor3d )( GLdouble red, GLdouble green, GLdouble blue );
extern void ( APIENTRY * qglColor3dv )( const GLdouble *v );
extern void ( APIENTRY * qglColor3f )( GLfloat red, GLfloat green, GLfloat blue );
extern void ( APIENTRY * qglColor3fv )( const GLfloat *v );
extern void ( APIENTRY * qglColor3i )( GLint red, GLint green, GLint blue );
extern void ( APIENTRY * qglColor3iv )( const GLint *v );
extern void ( APIENTRY * qglColor3s )( GLshort red, GLshort green, GLshort blue );
extern void ( APIENTRY * qglColor3sv )( const GLshort *v );
extern void ( APIENTRY * qglColor3ub )( GLubyte red, GLubyte green, GLubyte blue );
extern void ( APIENTRY * qglColor3ubv )( const GLubyte *v );
extern void ( APIENTRY * qglColor3ui )( GLuint red, GLuint green, GLuint blue );
extern void ( APIENTRY * qglColor3uiv )( const GLuint *v );
extern void ( APIENTRY * qglColor3us )( GLushort red, GLushort green, GLushort blue );
extern void ( APIENTRY * qglColor3usv )( const GLushort *v );
extern void ( APIENTRY * qglColor4b )( GLbyte red, GLbyte green, GLbyte blue, GLbyte alpha );
extern void ( APIENTRY * qglColor4bv )( const GLbyte *v );
extern void ( APIENTRY * qglColor4d )( GLdouble red, GLdouble green, GLdouble blue, GLdouble alpha );
extern void ( APIENTRY * qglColor4dv )( const GLdouble *v );
extern void ( APIENTRY * qglColor4f )( GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha );
extern void ( APIENTRY * qglColor4fv )( const GLfloat *v );
extern void ( APIENTRY * qglColor4i )( GLint red, GLint green, GLint blue, GLint alpha );
extern void ( APIENTRY * qglColor4iv )( const GLint *v );
extern void ( APIENTRY * qglColor4s )( GLshort red, GLshort green, GLshort blue, GLshort alpha );
extern void ( APIENTRY * qglColor4sv )( const GLshort *v );
extern void ( APIENTRY * qglColor4ub )( GLubyte red, GLubyte green, GLubyte blue, GLubyte alpha );
extern void ( APIENTRY * qglColor4ubv )( const GLubyte *v );
extern void ( APIENTRY * qglColor4ui )( GLuint red, GLuint green, GLuint blue, GLuint alpha );
extern void ( APIENTRY * qglColor4uiv )( const GLuint *v );
extern void ( APIENTRY * qglColor4us )( GLushort red, GLushort green, GLushort blue, GLushort alpha );
extern void ( APIENTRY * qglColor4usv )( const GLushort *v );
extern void ( APIENTRY * qglColorMask )( GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha );
extern void ( APIENTRY * qglColorMaterial )( GLenum face, GLenum mode );
extern void ( APIENTRY * qglColorPointer )( GLint size, GLenum type, GLsizei stride, const GLvoid *pointer );
extern void ( APIENTRY * qglCopyPixels )( GLint x, GLint y, GLsizei width, GLsizei height, GLenum type );
extern void ( APIENTRY * qglCopyTexImage1D )( GLenum target, GLint level, GLenum internalFormat, GLint x, GLint y, GLsizei width, GLint border );
extern void ( APIENTRY * qglCopyTexImage2D )( GLenum target, GLint level, GLenum internalFormat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border );
extern void ( APIENTRY * qglCopyTexSubImage1D )( GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width );
extern void ( APIENTRY * qglCopyTexSubImage2D )( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height );
extern void ( APIENTRY * qglCullFace )( GLenum mode );
extern void ( APIENTRY * qglDeleteLists )( GLuint list, GLsizei range );
extern void ( APIENTRY * qglDeleteTextures )( GLsizei n, const GLuint *textures );
extern void ( APIENTRY * qglDepthFunc )( GLenum func );
extern void ( APIENTRY * qglDepthMask )( GLboolean flag );
extern void ( APIENTRY * qglDepthRange )( GLclampd zNear, GLclampd zFar );
extern void ( APIENTRY * qglDisable )( GLenum cap );
extern void ( APIENTRY * qglDisableClientState )( GLenum array );
extern void ( APIENTRY * qglDrawArrays )( GLenum mode, GLint first, GLsizei count );
extern void ( APIENTRY * qglDrawBuffer )( GLenum mode );
extern void ( APIENTRY * qglDrawElements )( GLenum mode, GLsizei count, GLenum type, const GLvoid *indices );
extern void ( APIENTRY * qglDrawPixels )( GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels );
extern void ( APIENTRY * qglEdgeFlag )( GLboolean flag );
extern void ( APIENTRY * qglEdgeFlagPointer )( GLsizei stride, const GLvoid *pointer );
extern void ( APIENTRY * qglEdgeFlagv )( const GLboolean *flag );
extern void ( APIENTRY * qglEnable )( GLenum cap );
extern void ( APIENTRY * qglEnableClientState )( GLenum array );
extern void ( APIENTRY * qglEnd )( void );
extern void ( APIENTRY * qglEndList )( void );
extern void ( APIENTRY * qglEvalCoord1d )( GLdouble u );
extern void ( APIENTRY * qglEvalCoord1dv )( const GLdouble *u );
extern void ( APIENTRY * qglEvalCoord1f )( GLfloat u );
extern void ( APIENTRY * qglEvalCoord1fv )( const GLfloat *u );
extern void ( APIENTRY * qglEvalCoord2d )( GLdouble u, GLdouble v );
extern void ( APIENTRY * qglEvalCoord2dv )( const GLdouble *u );
extern void ( APIENTRY * qglEvalCoord2f )( GLfloat u, GLfloat v );
extern void ( APIENTRY * qglEvalCoord2fv )( const GLfloat *u );
extern void ( APIENTRY * qglEvalMesh1 )( GLenum mode, GLint i1, GLint i2 );
extern void ( APIENTRY * qglEvalMesh2 )( GLenum mode, GLint i1, GLint i2, GLint j1, GLint j2 );
extern void ( APIENTRY * qglEvalPoint1 )( GLint i );
extern void ( APIENTRY * qglEvalPoint2 )( GLint i, GLint j );
extern void ( APIENTRY * qglFeedbackBuffer )( GLsizei size, GLenum type, GLfloat *buffer );
extern void ( APIENTRY * qglFinish )( void );
extern void ( APIENTRY * qglFlush )( void );
extern void ( APIENTRY * qglFogf )( GLenum pname, GLfloat param );
extern void ( APIENTRY * qglFogfv )( GLenum pname, const GLfloat *params );
extern void ( APIENTRY * qglFogi )( GLenum pname, GLint param );
extern void ( APIENTRY * qglFogiv )( GLenum pname, const GLint *params );
extern void ( APIENTRY * qglFrontFace )( GLenum mode );
extern void ( APIENTRY * qglFrustum )( GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble zNear, GLdouble zFar );
extern GLuint ( APIENTRY * qglGenLists )( GLsizei range );
extern void ( APIENTRY * qglGenTextures )( GLsizei n, GLuint *textures );
extern void ( APIENTRY * qglGetBooleanv )( GLenum pname, GLboolean *params );
extern void ( APIENTRY * qglGetClipPlane )( GLenum plane, GLdouble *equation );
extern void ( APIENTRY * qglGetDoublev )( GLenum pname, GLdouble *params );
extern GLenum ( APIENTRY * qglGetError )( void );
extern void ( APIENTRY * qglGetFloatv )( GLenum pname, GLfloat *params );
extern void ( APIENTRY * qglGetIntegerv )( GLenum pname, GLint *params );
extern void ( APIENTRY * qglGetLightfv )( GLenum light, GLenum pname, GLfloat *params );
extern void ( APIENTRY * qglGetLightiv )( GLenum light, GLenum pname, GLint *params );
extern void ( APIENTRY * qglGetMapdv )( GLenum target, GLenum query, GLdouble *v );
extern void ( APIENTRY * qglGetMapfv )( GLenum target, GLenum query, GLfloat *v );
extern void ( APIENTRY * qglGetMapiv )( GLenum target, GLenum query, GLint *v );
extern void ( APIENTRY * qglGetMaterialfv )( GLenum face, GLenum pname, GLfloat *params );
extern void ( APIENTRY * qglGetMaterialiv )( GLenum face, GLenum pname, GLint *params );
extern void ( APIENTRY * qglGetPixelMapfv )( GLenum map, GLfloat *values );
extern void ( APIENTRY * qglGetPixelMapuiv )( GLenum map, GLuint *values );
extern void ( APIENTRY * qglGetPixelMapusv )( GLenum map, GLushort *values );
extern void ( APIENTRY * qglGetPointerv )( GLenum pname, GLvoid* *params );
extern void ( APIENTRY * qglGetPolygonStipple )( GLubyte *mask );
extern const GLubyte * ( APIENTRY * qglGetString )(GLenum name);
extern void ( APIENTRY * qglGetTexEnvfv )( GLenum target, GLenum pname, GLfloat *params );
extern void ( APIENTRY * qglGetTexEnviv )( GLenum target, GLenum pname, GLint *params );
extern void ( APIENTRY * qglGetTexGendv )( GLenum coord, GLenum pname, GLdouble *params );
extern void ( APIENTRY * qglGetTexGenfv )( GLenum coord, GLenum pname, GLfloat *params );
extern void ( APIENTRY * qglGetTexGeniv )( GLenum coord, GLenum pname, GLint *params );
extern void ( APIENTRY * qglGetTexImage )( GLenum target, GLint level, GLenum format, GLenum type, GLvoid *pixels );
extern void ( APIENTRY * qglGetTexLevelParameterfv )( GLenum target, GLint level, GLenum pname, GLfloat *params );
extern void ( APIENTRY * qglGetTexLevelParameteriv )( GLenum target, GLint level, GLenum pname, GLint *params );
extern void ( APIENTRY * qglGetTexParameterfv )( GLenum target, GLenum pname, GLfloat *params );
extern void ( APIENTRY * qglGetTexParameteriv )( GLenum target, GLenum pname, GLint *params );
extern void ( APIENTRY * qglHint )( GLenum target, GLenum mode );
extern void ( APIENTRY * qglIndexMask )( GLuint mask );
extern void ( APIENTRY * qglIndexPointer )( GLenum type, GLsizei stride, const GLvoid *pointer );
extern void ( APIENTRY * qglIndexd )( GLdouble c );
extern void ( APIENTRY * qglIndexdv )( const GLdouble *c );
extern void ( APIENTRY * qglIndexf )( GLfloat c );
extern void ( APIENTRY * qglIndexfv )( const GLfloat *c );
extern void ( APIENTRY * qglIndexi )( GLint c );
extern void ( APIENTRY * qglIndexiv )( const GLint *c );
extern void ( APIENTRY * qglIndexs )( GLshort c );
extern void ( APIENTRY * qglIndexsv )( const GLshort *c );
extern void ( APIENTRY * qglIndexub )( GLubyte c );
extern void ( APIENTRY * qglIndexubv )( const GLubyte *c );
extern void ( APIENTRY * qglInitNames )( void );
extern void ( APIENTRY * qglInterleavedArrays )( GLenum format, GLsizei stride, const GLvoid *pointer );
extern GLboolean ( APIENTRY * qglIsEnabled )( GLenum cap );
extern GLboolean ( APIENTRY * qglIsList )( GLuint list );
extern GLboolean ( APIENTRY * qglIsTexture )( GLuint texture );
extern void ( APIENTRY * qglLightModelf )( GLenum pname, GLfloat param );
extern void ( APIENTRY * qglLightModelfv )( GLenum pname, const GLfloat *params );
extern void ( APIENTRY * qglLightModeli )( GLenum pname, GLint param );
extern void ( APIENTRY * qglLightModeliv )( GLenum pname, const GLint *params );
extern void ( APIENTRY * qglLightf )( GLenum light, GLenum pname, GLfloat param );
extern void ( APIENTRY * qglLightfv )( GLenum light, GLenum pname, const GLfloat *params );
extern void ( APIENTRY * qglLighti )( GLenum light, GLenum pname, GLint param );
extern void ( APIENTRY * qglLightiv )( GLenum light, GLenum pname, const GLint *params );
extern void ( APIENTRY * qglLineStipple )( GLint factor, GLushort pattern );
extern void ( APIENTRY * qglLineWidth )( GLfloat width );
extern void ( APIENTRY * qglListBase )( GLuint base );
extern void ( APIENTRY * qglLoadIdentity )( void );
extern void ( APIENTRY * qglLoadMatrixd )( const GLdouble *m );
extern void ( APIENTRY * qglLoadMatrixf )( const GLfloat *m );
extern void ( APIENTRY * qglLoadName )( GLuint name );
extern void ( APIENTRY * qglLogicOp )( GLenum opcode );
extern void ( APIENTRY * qglMap1d )( GLenum target, GLdouble u1, GLdouble u2, GLint stride, GLint order, const GLdouble *points );
extern void ( APIENTRY * qglMap1f )( GLenum target, GLfloat u1, GLfloat u2, GLint stride, GLint order, const GLfloat *points );
extern void ( APIENTRY * qglMap2d )( GLenum target, GLdouble u1, GLdouble u2, GLint ustride, GLint uorder, GLdouble v1, GLdouble v2, GLint vstride, GLint vorder, const GLdouble *points );
extern void ( APIENTRY * qglMap2f )( GLenum target, GLfloat u1, GLfloat u2, GLint ustride, GLint uorder, GLfloat v1, GLfloat v2, GLint vstride, GLint vorder, const GLfloat *points );
extern void ( APIENTRY * qglMapGrid1d )( GLint un, GLdouble u1, GLdouble u2 );
extern void ( APIENTRY * qglMapGrid1f )( GLint un, GLfloat u1, GLfloat u2 );
extern void ( APIENTRY * qglMapGrid2d )( GLint un, GLdouble u1, GLdouble u2, GLint vn, GLdouble v1, GLdouble v2 );
extern void ( APIENTRY * qglMapGrid2f )( GLint un, GLfloat u1, GLfloat u2, GLint vn, GLfloat v1, GLfloat v2 );
extern void ( APIENTRY * qglMaterialf )( GLenum face, GLenum pname, GLfloat param );
extern void ( APIENTRY * qglMaterialfv )( GLenum face, GLenum pname, const GLfloat *params );
extern void ( APIENTRY * qglMateriali )( GLenum face, GLenum pname, GLint param );
extern void ( APIENTRY * qglMaterialiv )( GLenum face, GLenum pname, const GLint *params );
extern void ( APIENTRY * qglMatrixMode )( GLenum mode );
extern void ( APIENTRY * qglMultMatrixd )( const GLdouble *m );
extern void ( APIENTRY * qglMultMatrixf )( const GLfloat *m );
extern void ( APIENTRY * qglNewList )( GLuint list, GLenum mode );
extern void ( APIENTRY * qglNormal3b )( GLbyte nx, GLbyte ny, GLbyte nz );
extern void ( APIENTRY * qglNormal3bv )( const GLbyte *v );
extern void ( APIENTRY * qglNormal3d )( GLdouble nx, GLdouble ny, GLdouble nz );
extern void ( APIENTRY * qglNormal3dv )( const GLdouble *v );
extern void ( APIENTRY * qglNormal3f )( GLfloat nx, GLfloat ny, GLfloat nz );
extern void ( APIENTRY * qglNormal3fv )( const GLfloat *v );
extern void ( APIENTRY * qglNormal3i )( GLint nx, GLint ny, GLint nz );
extern void ( APIENTRY * qglNormal3iv )( const GLint *v );
extern void ( APIENTRY * qglNormal3s )( GLshort nx, GLshort ny, GLshort nz );
extern void ( APIENTRY * qglNormal3sv )( const GLshort *v );
extern void ( APIENTRY * qglNormalPointer )( GLenum type, GLsizei stride, const GLvoid *pointer );
extern void ( APIENTRY * qglOrtho )( GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble zNear, GLdouble zFar );
extern void ( APIENTRY * qglPassThrough )( GLfloat token );
extern void ( APIENTRY * qglPixelMapfv )( GLenum map, GLsizei mapsize, const GLfloat *values );
extern void ( APIENTRY * qglPixelMapuiv )( GLenum map, GLsizei mapsize, const GLuint *values );
extern void ( APIENTRY * qglPixelMapusv )( GLenum map, GLsizei mapsize, const GLushort *values );
extern void ( APIENTRY * qglPixelStoref )( GLenum pname, GLfloat param );
extern void ( APIENTRY * qglPixelStorei )( GLenum pname, GLint param );
extern void ( APIENTRY * qglPixelTransferf )( GLenum pname, GLfloat param );
extern void ( APIENTRY * qglPixelTransferi )( GLenum pname, GLint param );
extern void ( APIENTRY * qglPixelZoom )( GLfloat xfactor, GLfloat yfactor );
extern void ( APIENTRY * qglPointSize )( GLfloat size );
extern void ( APIENTRY * qglPolygonMode )( GLenum face, GLenum mode );
extern void ( APIENTRY * qglPolygonOffset )( GLfloat factor, GLfloat units );
extern void ( APIENTRY * qglPolygonStipple )( const GLubyte *mask );
extern void ( APIENTRY * qglPopAttrib )( void );
extern void ( APIENTRY * qglPopClientAttrib )( void );
extern void ( APIENTRY * qglPopMatrix )( void );
extern void ( APIENTRY * qglPopName )( void );
extern void ( APIENTRY * qglPrioritizeTextures )( GLsizei n, const GLuint *textures, const GLclampf *priorities );
extern void ( APIENTRY * qglPushAttrib )( GLbitfield mask );
extern void ( APIENTRY * qglPushClientAttrib )( GLbitfield mask );
extern void ( APIENTRY * qglPushMatrix )( void );
extern void ( APIENTRY * qglPushName )( GLuint name );
extern void ( APIENTRY * qglRasterPos2d )( GLdouble x, GLdouble y );
extern void ( APIENTRY * qglRasterPos2dv )( const GLdouble *v );
extern void ( APIENTRY * qglRasterPos2f )( GLfloat x, GLfloat y );
extern void ( APIENTRY * qglRasterPos2fv )( const GLfloat *v );
extern void ( APIENTRY * qglRasterPos2i )( GLint x, GLint y );
extern void ( APIENTRY * qglRasterPos2iv )( const GLint *v );
extern void ( APIENTRY * qglRasterPos2s )( GLshort x, GLshort y );
extern void ( APIENTRY * qglRasterPos2sv )( const GLshort *v );
extern void ( APIENTRY * qglRasterPos3d )( GLdouble x, GLdouble y, GLdouble z );
extern void ( APIENTRY * qglRasterPos3dv )( const GLdouble *v );
extern void ( APIENTRY * qglRasterPos3f )( GLfloat x, GLfloat y, GLfloat z );
extern void ( APIENTRY * qglRasterPos3fv )( const GLfloat *v );
extern void ( APIENTRY * qglRasterPos3i )( GLint x, GLint y, GLint z );
extern void ( APIENTRY * qglRasterPos3iv )( const GLint *v );
extern void ( APIENTRY * qglRasterPos3s )( GLshort x, GLshort y, GLshort z );
extern void ( APIENTRY * qglRasterPos3sv )( const GLshort *v );
extern void ( APIENTRY * qglRasterPos4d )( GLdouble x, GLdouble y, GLdouble z, GLdouble w );
extern void ( APIENTRY * qglRasterPos4dv )( const GLdouble *v );
extern void ( APIENTRY * qglRasterPos4f )( GLfloat x, GLfloat y, GLfloat z, GLfloat w );
extern void ( APIENTRY * qglRasterPos4fv )( const GLfloat *v );
extern void ( APIENTRY * qglRasterPos4i )( GLint x, GLint y, GLint z, GLint w );
extern void ( APIENTRY * qglRasterPos4iv )( const GLint *v );
extern void ( APIENTRY * qglRasterPos4s )( GLshort x, GLshort y, GLshort z, GLshort w );
extern void ( APIENTRY * qglRasterPos4sv )( const GLshort *v );
extern void ( APIENTRY * qglReadBuffer )( GLenum mode );
extern void ( APIENTRY * qglReadPixels )( GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid *pixels );
extern void ( APIENTRY * qglRectd )( GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2 );
extern void ( APIENTRY * qglRectdv )( const GLdouble *v1, const GLdouble *v2 );
extern void ( APIENTRY * qglRectf )( GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2 );
extern void ( APIENTRY * qglRectfv )( const GLfloat *v1, const GLfloat *v2 );
extern void ( APIENTRY * qglRecti )( GLint x1, GLint y1, GLint x2, GLint y2 );
extern void ( APIENTRY * qglRectiv )( const GLint *v1, const GLint *v2 );
extern void ( APIENTRY * qglRects )( GLshort x1, GLshort y1, GLshort x2, GLshort y2 );
extern void ( APIENTRY * qglRectsv )( const GLshort *v1, const GLshort *v2 );
extern GLint ( APIENTRY * qglRenderMode )( GLenum mode );
extern void ( APIENTRY * qglRotated )( GLdouble angle, GLdouble x, GLdouble y, GLdouble z );
extern void ( APIENTRY * qglRotatef )( GLfloat angle, GLfloat x, GLfloat y, GLfloat z );
extern void ( APIENTRY * qglScaled )( GLdouble x, GLdouble y, GLdouble z );
extern void ( APIENTRY * qglScalef )( GLfloat x, GLfloat y, GLfloat z );
extern void ( APIENTRY * qglScissor )( GLint x, GLint y, GLsizei width, GLsizei height );
extern void ( APIENTRY * qglSelectBuffer )( GLsizei size, GLuint *buffer );
extern void ( APIENTRY * qglShadeModel )( GLenum mode );
extern void ( APIENTRY * qglStencilFunc )( GLenum func, GLint ref, GLuint mask );
extern void ( APIENTRY * qglStencilMask )( GLuint mask );
extern void ( APIENTRY * qglStencilOp )( GLenum fail, GLenum zfail, GLenum zpass );
extern void ( APIENTRY * qglTexCoord1d )( GLdouble s );
extern void ( APIENTRY * qglTexCoord1dv )( const GLdouble *v );
extern void ( APIENTRY * qglTexCoord1f )( GLfloat s );
extern void ( APIENTRY * qglTexCoord1fv )( const GLfloat *v );
extern void ( APIENTRY * qglTexCoord1i )( GLint s );
extern void ( APIENTRY * qglTexCoord1iv )( const GLint *v );
extern void ( APIENTRY * qglTexCoord1s )( GLshort s );
extern void ( APIENTRY * qglTexCoord1sv )( const GLshort *v );
extern void ( APIENTRY * qglTexCoord2d )( GLdouble s, GLdouble t );
extern void ( APIENTRY * qglTexCoord2dv )( const GLdouble *v );
extern void ( APIENTRY * qglTexCoord2f )( GLfloat s, GLfloat t );
extern void ( APIENTRY * qglTexCoord2fv )( const GLfloat *v );
extern void ( APIENTRY * qglTexCoord2i )( GLint s, GLint t );
extern void ( APIENTRY * qglTexCoord2iv )( const GLint *v );
extern void ( APIENTRY * qglTexCoord2s )( GLshort s, GLshort t );
extern void ( APIENTRY * qglTexCoord2sv )( const GLshort *v );
extern void ( APIENTRY * qglTexCoord3d )( GLdouble s, GLdouble t, GLdouble r );
extern void ( APIENTRY * qglTexCoord3dv )( const GLdouble *v );
extern void ( APIENTRY * qglTexCoord3f )( GLfloat s, GLfloat t, GLfloat r );
extern void ( APIENTRY * qglTexCoord3fv )( const GLfloat *v );
extern void ( APIENTRY * qglTexCoord3i )( GLint s, GLint t, GLint r );
extern void ( APIENTRY * qglTexCoord3iv )( const GLint *v );
extern void ( APIENTRY * qglTexCoord3s )( GLshort s, GLshort t, GLshort r );
extern void ( APIENTRY * qglTexCoord3sv )( const GLshort *v );
extern void ( APIENTRY * qglTexCoord4d )( GLdouble s, GLdouble t, GLdouble r, GLdouble q );
extern void ( APIENTRY * qglTexCoord4dv )( const GLdouble *v );
extern void ( APIENTRY * qglTexCoord4f )( GLfloat s, GLfloat t, GLfloat r, GLfloat q );
extern void ( APIENTRY * qglTexCoord4fv )( const GLfloat *v );
extern void ( APIENTRY * qglTexCoord4i )( GLint s, GLint t, GLint r, GLint q );
extern void ( APIENTRY * qglTexCoord4iv )( const GLint *v );
extern void ( APIENTRY * qglTexCoord4s )( GLshort s, GLshort t, GLshort r, GLshort q );
extern void ( APIENTRY * qglTexCoord4sv )( const GLshort *v );
extern void ( APIENTRY * qglTexCoordPointer )( GLint size, GLenum type, GLsizei stride, const GLvoid *pointer );
extern void ( APIENTRY * qglTexEnvf )( GLenum target, GLenum pname, GLfloat param );
extern void ( APIENTRY * qglTexEnvfv )( GLenum target, GLenum pname, const GLfloat *params );
extern void ( APIENTRY * qglTexEnvi )( GLenum target, GLenum pname, GLint param );
extern void ( APIENTRY * qglTexEnviv )( GLenum target, GLenum pname, const GLint *params );
extern void ( APIENTRY * qglTexGend )( GLenum coord, GLenum pname, GLdouble param );
extern void ( APIENTRY * qglTexGendv )( GLenum coord, GLenum pname, const GLdouble *params );
extern void ( APIENTRY * qglTexGenf )( GLenum coord, GLenum pname, GLfloat param );
extern void ( APIENTRY * qglTexGenfv )( GLenum coord, GLenum pname, const GLfloat *params );
extern void ( APIENTRY * qglTexGeni )( GLenum coord, GLenum pname, GLint param );
extern void ( APIENTRY * qglTexGeniv )( GLenum coord, GLenum pname, const GLint *params );
extern void ( APIENTRY * qglTexImage1D )( GLenum target, GLint level, GLint internalformat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid *pixels );
extern void ( APIENTRY * qglTexImage2D )( GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels );
extern void ( APIENTRY * qglTexParameterf )( GLenum target, GLenum pname, GLfloat param );
extern void ( APIENTRY * qglTexParameterfv )( GLenum target, GLenum pname, const GLfloat *params );
extern void ( APIENTRY * qglTexParameteri )( GLenum target, GLenum pname, GLint param );
extern void ( APIENTRY * qglTexParameteriv )( GLenum target, GLenum pname, const GLint *params );
extern void ( APIENTRY * qglTexSubImage1D )( GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const GLvoid *pixels );
extern void ( APIENTRY * qglTexSubImage2D )( GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels );
extern void ( APIENTRY * qglTranslated )( GLdouble x, GLdouble y, GLdouble z );
extern void ( APIENTRY * qglTranslatef )( GLfloat x, GLfloat y, GLfloat z );
extern void ( APIENTRY * qglVertex2d )( GLdouble x, GLdouble y );
extern void ( APIENTRY * qglVertex2dv )( const GLdouble *v );
extern void ( APIENTRY * qglVertex2f )( GLfloat x, GLfloat y );
extern void ( APIENTRY * qglVertex2fv )( const GLfloat *v );
extern void ( APIENTRY * qglVertex2i )( GLint x, GLint y );
extern void ( APIENTRY * qglVertex2iv )( const GLint *v );
extern void ( APIENTRY * qglVertex2s )( GLshort x, GLshort y );
extern void ( APIENTRY * qglVertex2sv )( const GLshort *v );
extern void ( APIENTRY * qglVertex3d )( GLdouble x, GLdouble y, GLdouble z );
extern void ( APIENTRY * qglVertex3dv )( const GLdouble *v );
extern void ( APIENTRY * qglVertex3f )( GLfloat x, GLfloat y, GLfloat z );
extern void ( APIENTRY * qglVertex3fv )( const GLfloat *v );
extern void ( APIENTRY * qglVertex3i )( GLint x, GLint y, GLint z );
extern void ( APIENTRY * qglVertex3iv )( const GLint *v );
extern void ( APIENTRY * qglVertex3s )( GLshort x, GLshort y, GLshort z );
extern void ( APIENTRY * qglVertex3sv )( const GLshort *v );
extern void ( APIENTRY * qglVertex4d )( GLdouble x, GLdouble y, GLdouble z, GLdouble w );
extern void ( APIENTRY * qglVertex4dv )( const GLdouble *v );
extern void ( APIENTRY * qglVertex4f )( GLfloat x, GLfloat y, GLfloat z, GLfloat w );
extern void ( APIENTRY * qglVertex4fv )( const GLfloat *v );
extern void ( APIENTRY * qglVertex4i )( GLint x, GLint y, GLint z, GLint w );
extern void ( APIENTRY * qglVertex4iv )( const GLint *v );
extern void ( APIENTRY * qglVertex4s )( GLshort x, GLshort y, GLshort z, GLshort w );
extern void ( APIENTRY * qglVertex4sv )( const GLshort *v );
extern void ( APIENTRY * qglVertexPointer )( GLint size, GLenum type, GLsizei stride, const GLvoid *pointer );
extern void ( APIENTRY * qglViewport )( GLint x, GLint y, GLsizei width, GLsizei height );

#if defined( _WIN32 )

extern int ( WINAPI * qwglChoosePixelFormat )( HDC, CONST PIXELFORMATDESCRIPTOR * );
extern int ( WINAPI * qwglDescribePixelFormat )( HDC, int, UINT, LPPIXELFORMATDESCRIPTOR );
extern int ( WINAPI * qwglGetPixelFormat )( HDC );
extern BOOL ( WINAPI * qwglSetPixelFormat )( HDC, int, CONST PIXELFORMATDESCRIPTOR * );
extern BOOL ( WINAPI * qwglSwapBuffers )( HDC );

extern BOOL ( WINAPI * qwglGetDeviceGammaRamp3DFX )( HDC, LPVOID );
extern BOOL ( WINAPI * qwglSetDeviceGammaRamp3DFX )( HDC, LPVOID );

extern BOOL ( WINAPI * qwglCopyContext )( HGLRC, HGLRC, UINT );
extern HGLRC ( WINAPI * qwglCreateContext )( HDC );
extern HGLRC ( WINAPI * qwglCreateLayerContext )( HDC, int );
extern BOOL ( WINAPI * qwglDeleteContext )( HGLRC );
extern HGLRC ( WINAPI * qwglGetCurrentContext )( VOID );
extern HDC ( WINAPI * qwglGetCurrentDC )( VOID );
extern PROC ( WINAPI * qwglGetProcAddress )( LPCSTR );
extern BOOL ( WINAPI * qwglMakeCurrent )( HDC, HGLRC );
extern BOOL ( WINAPI * qwglShareLists )( HGLRC, HGLRC );
extern BOOL ( WINAPI * qwglUseFontBitmaps )( HDC, DWORD, DWORD, DWORD );

extern BOOL ( WINAPI * qwglUseFontOutlines )( HDC, DWORD, DWORD, DWORD, FLOAT,
					   FLOAT, int, LPGLYPHMETRICSFLOAT );

extern BOOL ( WINAPI * qwglDescribeLayerPlane )( HDC, int, int, UINT,
					   LPLAYERPLANEDESCRIPTOR );
extern int ( WINAPI * qwglSetLayerPaletteEntries )( HDC, int, int, int,
													CONST COLORREF * );
extern int ( WINAPI * qwglGetLayerPaletteEntries )( HDC, int, int, int,
					  COLORREF * );
extern BOOL ( WINAPI * qwglRealizeLayerPalette )( HDC, int, BOOL );
extern BOOL ( WINAPI * qwglSwapLayerBuffers )( HDC, UINT );

extern BOOL ( WINAPI * qwglSwapIntervalEXT )( int interval );

#endif  // _WIN32

#if ( ( defined __linux__ )  || ( defined __FreeBSD__ ) ) // rb010123

//FX Mesa Functions
// bk001129 - from cvs1.17 (mkv)
#if defined ( __FX__ )
extern fxMesaContext ( *qfxMesaCreateContext )( GLuint win, GrScreenResolution_t, GrScreenRefresh_t, const GLint attribList[] );
extern fxMesaContext ( *qfxMesaCreateBestContext )( GLuint win, GLint width, GLint height, const GLint attribList[] );
extern void ( *qfxMesaDestroyContext )( fxMesaContext ctx );
extern void ( *qfxMesaMakeCurrent )( fxMesaContext ctx );
extern fxMesaContext ( *qfxMesaGetCurrentContext )( void );
extern void ( *qfxMesaSwapBuffers )( void );
#endif

//GLX Functions
extern XVisualInfo * ( *qglXChooseVisual )( Display * dpy, int screen, int *attribList );
extern GLXContext ( *qglXCreateContext )( Display *dpy, XVisualInfo *vis, GLXContext shareList, Bool direct );
extern void ( *qglXDestroyContext )( Display *dpy, GLXContext ctx );
extern Bool ( *qglXMakeCurrent )( Display *dpy, GLXDrawable drawable, GLXContext ctx );
extern void ( *qglXCopyContext )( Display *dpy, GLXContext src, GLXContext dst, GLuint mask );
extern void ( *qglXSwapBuffers )( Display *dpy, GLXDrawable drawable );

#endif // __linux__ || __FreeBSD__ // rb010123

#endif  // _WIN32 && __linux__

#endif
