qgl_win.c

Quake 2 Source code for students by Theerthan You can also download from idsoftwares.com

/*
Copyright (C) 1997-2001 Id Software, Inc.

This program 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.

This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
/*
** QGL_WIN.C
**
** This file implements the operating system binding of GL to QGL function
** pointers.  When doing a port of Quake2 you must implement the following
** two functions:
**
** QGL_Init() - loads libraries, assigns function pointers, etc.
** QGL_Shutdown() - unloads libraries, NULLs function pointers
*/
#include <float.h>
#include "../ref_gl/gl_local.h"
#include "glw_win.h"

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

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

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

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

void ( APIENTRY * qglAccum )(GLenum op, GLfloat value);
void ( APIENTRY * qglAlphaFunc )(GLenum func, GLclampf ref);
GLboolean ( APIENTRY * qglAreTexturesResident )(GLsizei n, const GLuint *textures, GLboolean *residences);
void ( APIENTRY * qglArrayElement )(GLint i);
void ( APIENTRY * qglBegin )(GLenum mode);
void ( APIENTRY * qglBindTexture )(GLenum target, GLuint texture);
void ( APIENTRY * qglBitmap )(GLsizei width, GLsizei height, GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove, const GLubyte *bitmap);
void ( APIENTRY * qglBlendFunc )(GLenum sfactor, GLenum dfactor);
void ( APIENTRY * qglCallList )(GLuint list);
void ( APIENTRY * qglCallLists )(GLsizei n, GLenum type, const GLvoid *lists);
void ( APIENTRY * qglClear )(GLbitfield mask);
void ( APIENTRY * qglClearAccum )(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
void ( APIENTRY * qglClearColor )(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
void ( APIENTRY * qglClearDepth )(GLclampd depth);
void ( APIENTRY * qglClearIndex )(GLfloat c);
void ( APIENTRY * qglClearStencil )(GLint s);
void ( APIENTRY * qglClipPlane )(GLenum plane, const GLdouble *equation);
void ( APIENTRY * qglColor3b )(GLbyte red, GLbyte green, GLbyte blue);
void ( APIENTRY * qglColor3bv )(const GLbyte *v);
void ( APIENTRY * qglColor3d )(GLdouble red, GLdouble green, GLdouble blue);
void ( APIENTRY * qglColor3dv )(const GLdouble *v);
void ( APIENTRY * qglColor3f )(GLfloat red, GLfloat green, GLfloat blue);
void ( APIENTRY * qglColor3fv )(const GLfloat *v);
void ( APIENTRY * qglColor3i )(GLint red, GLint green, GLint blue);
void ( APIENTRY * qglColor3iv )(const GLint *v);
void ( APIENTRY * qglColor3s )(GLshort red, GLshort green, GLshort blue);
void ( APIENTRY * qglColor3sv )(const GLshort *v);
void ( APIENTRY * qglColor3ub )(GLubyte red, GLubyte green, GLubyte blue);
void ( APIENTRY * qglColor3ubv )(const GLubyte *v);
void ( APIENTRY * qglColor3ui )(GLuint red, GLuint green, GLuint blue);
void ( APIENTRY * qglColor3uiv )(const GLuint *v);
void ( APIENTRY * qglColor3us )(GLushort red, GLushort green, GLushort blue);
void ( APIENTRY * qglColor3usv )(const GLushort *v);
void ( APIENTRY * qglColor4b )(GLbyte red, GLbyte green, GLbyte blue, GLbyte alpha);
void ( APIENTRY * qglColor4bv )(const GLbyte *v);
void ( APIENTRY * qglColor4d )(GLdouble red, GLdouble green, GLdouble blue, GLdouble alpha);
void ( APIENTRY * qglColor4dv )(const GLdouble *v);
void ( APIENTRY * qglColor4f )(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
void ( APIENTRY * qglColor4fv )(const GLfloat *v);
void ( APIENTRY * qglColor4i )(GLint red, GLint green, GLint blue, GLint alpha);
void ( APIENTRY * qglColor4iv )(const GLint *v);
void ( APIENTRY * qglColor4s )(GLshort red, GLshort green, GLshort blue, GLshort alpha);
void ( APIENTRY * qglColor4sv )(const GLshort *v);
void ( APIENTRY * qglColor4ub )(GLubyte red, GLubyte green, GLubyte blue, GLubyte alpha);
void ( APIENTRY * qglColor4ubv )(const GLubyte *v);
void ( APIENTRY * qglColor4ui )(GLuint red, GLuint green, GLuint blue, GLuint alpha);
void ( APIENTRY * qglColor4uiv )(const GLuint *v);
void ( APIENTRY * qglColor4us )(GLushort red, GLushort green, GLushort blue, GLushort alpha);
void ( APIENTRY * qglColor4usv )(const GLushort *v);
void ( APIENTRY * qglColorMask )(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
void ( APIENTRY * qglColorMaterial )(GLenum face, GLenum mode);
void ( APIENTRY * qglColorPointer )(GLint size, GLenum type, GLsizei stride, const GLvoid *pointer);
void ( APIENTRY * qglCopyPixels )(GLint x, GLint y, GLsizei width, GLsizei height, GLenum type);
void ( APIENTRY * qglCopyTexImage1D )(GLenum target, GLint level, GLenum internalFormat, GLint x, GLint y, GLsizei width, GLint border);
void ( APIENTRY * qglCopyTexImage2D )(GLenum target, GLint level, GLenum internalFormat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
void ( APIENTRY * qglCopyTexSubImage1D )(GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);
void ( APIENTRY * qglCopyTexSubImage2D )(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
void ( APIENTRY * qglCullFace )(GLenum mode);
void ( APIENTRY * qglDeleteLists )(GLuint list, GLsizei range);
void ( APIENTRY * qglDeleteTextures )(GLsizei n, const GLuint *textures);
void ( APIENTRY * qglDepthFunc )(GLenum func);
void ( APIENTRY * qglDepthMask )(GLboolean flag);
void ( APIENTRY * qglDepthRange )(GLclampd zNear, GLclampd zFar);
void ( APIENTRY * qglDisable )(GLenum cap);
void ( APIENTRY * qglDisableClientState )(GLenum array);
void ( APIENTRY * qglDrawArrays )(GLenum mode, GLint first, GLsizei count);
void ( APIENTRY * qglDrawBuffer )(GLenum mode);
void ( APIENTRY * qglDrawElements )(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices);
void ( APIENTRY * qglDrawPixels )(GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);
void ( APIENTRY * qglEdgeFlag )(GLboolean flag);
void ( APIENTRY * qglEdgeFlagPointer )(GLsizei stride, const GLvoid *pointer);
void ( APIENTRY * qglEdgeFlagv )(const GLboolean *flag);
void ( APIENTRY * qglEnable )(GLenum cap);
void ( APIENTRY * qglEnableClientState )(GLenum array);
void ( APIENTRY * qglEnd )(void);
void ( APIENTRY * qglEndList )(void);
void ( APIENTRY * qglEvalCoord1d )(GLdouble u);
void ( APIENTRY * qglEvalCoord1dv )(const GLdouble *u);
void ( APIENTRY * qglEvalCoord1f )(GLfloat u);
void ( APIENTRY * qglEvalCoord1fv )(const GLfloat *u);
void ( APIENTRY * qglEvalCoord2d )(GLdouble u, GLdouble v);
void ( APIENTRY * qglEvalCoord2dv )(const GLdouble *u);
void ( APIENTRY * qglEvalCoord2f )(GLfloat u, GLfloat v);
void ( APIENTRY * qglEvalCoord2fv )(const GLfloat *u);
void ( APIENTRY * qglEvalMesh1 )(GLenum mode, GLint i1, GLint i2);
void ( APIENTRY * qglEvalMesh2 )(GLenum mode, GLint i1, GLint i2, GLint j1, GLint j2);
void ( APIENTRY * qglEvalPoint1 )(GLint i);
void ( APIENTRY * qglEvalPoint2 )(GLint i, GLint j);
void ( APIENTRY * qglFeedbackBuffer )(GLsizei size, GLenum type, GLfloat *buffer);
void ( APIENTRY * qglFinish )(void);
void ( APIENTRY * qglFlush )(void);
void ( APIENTRY * qglFogf )(GLenum pname, GLfloat param);
void ( APIENTRY * qglFogfv )(GLenum pname, const GLfloat *params);
void ( APIENTRY * qglFogi )(GLenum pname, GLint param);
void ( APIENTRY * qglFogiv )(GLenum pname, const GLint *params);
void ( APIENTRY * qglFrontFace )(GLenum mode);
void ( APIENTRY * qglFrustum )(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble zNear, GLdouble zFar);
GLuint ( APIENTRY * qglGenLists )(GLsizei range);
void ( APIENTRY * qglGenTextures )(GLsizei n, GLuint *textures);
void ( APIENTRY * qglGetBooleanv )(GLenum pname, GLboolean *params);
void ( APIENTRY * qglGetClipPlane )(GLenum plane, GLdouble *equation);
void ( APIENTRY * qglGetDoublev )(GLenum pname, GLdouble *params);
GLenum ( APIENTRY * qglGetError )(void);
void ( APIENTRY * qglGetFloatv )(GLenum pname, GLfloat *params);
void ( APIENTRY * qglGetIntegerv )(GLenum pname, GLint *params);
void ( APIENTRY * qglGetLightfv )(GLenum light, GLenum pname, GLfloat *params);
void ( APIENTRY * qglGetLightiv )(GLenum light, GLenum pname, GLint *params);
void ( APIENTRY * qglGetMapdv )(GLenum target, GLenum query, GLdouble *v);
void ( APIENTRY * qglGetMapfv )(GLenum target, GLenum query, GLfloat *v);
void ( APIENTRY * qglGetMapiv )(GLenum target, GLenum query, GLint *v);
void ( APIENTRY * qglGetMaterialfv )(GLenum face, GLenum pname, GLfloat *params);
void ( APIENTRY * qglGetMaterialiv )(GLenum face, GLenum pname, GLint *params);
void ( APIENTRY * qglGetPixelMapfv )(GLenum map, GLfloat *values);
void ( APIENTRY * qglGetPixelMapuiv )(GLenum map, GLuint *values);
void ( APIENTRY * qglGetPixelMapusv )(GLenum map, GLushort *values);
void ( APIENTRY * qglGetPointerv )(GLenum pname, GLvoid* *params);
void ( APIENTRY * qglGetPolygonStipple )(GLubyte *mask);
const GLubyte * ( APIENTRY * qglGetString )(GLenum name);
void ( APIENTRY * qglGetTexEnvfv )(GLenum target, GLenum pname, GLfloat *params);
void ( APIENTRY * qglGetTexEnviv )(GLenum target, GLenum pname, GLint *params);
void ( APIENTRY * qglGetTexGendv )(GLenum coord, GLenum pname, GLdouble *params);
void ( APIENTRY * qglGetTexGenfv )(GLenum coord, GLenum pname, GLfloat *params);
void ( APIENTRY * qglGetTexGeniv )(GLenum coord, GLenum pname, GLint *params);
void ( APIENTRY * qglGetTexImage )(GLenum target, GLint level, GLenum format, GLenum type, GLvoid *pixels);
void ( APIENTRY * qglGetTexLevelParameterfv )(GLenum target, GLint level, GLenum pname, GLfloat *params);
void ( APIENTRY * qglGetTexLevelParameteriv )(GLenum target, GLint level, GLenum pname, GLint *params);
void ( APIENTRY * qglGetTexParameterfv )(GLenum target, GLenum pname, GLfloat *params);
void ( APIENTRY * qglGetTexParameteriv )(GLenum target, GLenum pname, GLint *params);
void ( APIENTRY * qglHint )(GLenum target, GLenum mode);
void ( APIENTRY * qglIndexMask )(GLuint mask);
void ( APIENTRY * qglIndexPointer )(GLenum type, GLsizei stride, const GLvoid *pointer);
void ( APIENTRY * qglIndexd )(GLdouble c);
void ( APIENTRY * qglIndexdv )(const GLdouble *c);
void ( APIENTRY * qglIndexf )(GLfloat c);
void ( APIENTRY * qglIndexfv )(const GLfloat *c);
void ( APIENTRY * qglIndexi )(GLint c);
void ( APIENTRY * qglIndexiv )(const GLint *c);
void ( APIENTRY * qglIndexs )(GLshort c);
void ( APIENTRY * qglIndexsv )(const GLshort *c);
void ( APIENTRY * qglIndexub )(GLubyte c);
void ( APIENTRY * qglIndexubv )(const GLubyte *c);
void ( APIENTRY * qglInitNames )(void);
void ( APIENTRY * qglInterleavedArrays )(GLenum format, GLsizei stride, const GLvoid *pointer);
GLboolean ( APIENTRY * qglIsEnabled )(GLenum cap);
GLboolean ( APIENTRY * qglIsList )(GLuint list);
GLboolean ( APIENTRY * qglIsTexture )(GLuint texture);
void ( APIENTRY * qglLightModelf )(GLenum pname, GLfloat param);
void ( APIENTRY * qglLightModelfv )(GLenum pname, const GLfloat *params);
void ( APIENTRY * qglLightModeli )(GLenum pname, GLint param);
void ( APIENTRY * qglLightModeliv )(GLenum pname, const GLint *params);
void ( APIENTRY * qglLightf )(GLenum light, GLenum pname, GLfloat param);
void ( APIENTRY * qglLightfv )(GLenum light, GLenum pname, const GLfloat *params);
void ( APIENTRY * qglLighti )(GLenum light, GLenum pname, GLint param);
void ( APIENTRY * qglLightiv )(GLenum light, GLenum pname, const GLint *params);
void ( APIENTRY * qglLineStipple )(GLint factor, GLushort pattern);
void ( APIENTRY * qglLineWidth )(GLfloat width);
void ( APIENTRY * qglListBase )(GLuint base);
void ( APIENTRY * qglLoadIdentity )(void);
void ( APIENTRY * qglLoadMatrixd )(const GLdouble *m);
void ( APIENTRY * qglLoadMatrixf )(const GLfloat *m);
void ( APIENTRY * qglLoadName )(GLuint name);
void ( APIENTRY * qglLogicOp )(GLenum opcode);
void ( APIENTRY * qglMap1d )(GLenum target, GLdouble u1, GLdouble u2, GLint stride, GLint order, const GLdouble *points);
void ( APIENTRY * qglMap1f )(GLenum target, GLfloat u1, GLfloat u2, GLint stride, GLint order, const GLfloat *points);
void ( APIENTRY * qglMap2d )(GLenum target, GLdouble u1, GLdouble u2, GLint ustride, GLint uorder, GLdouble v1, GLdouble v2, GLint vstride, GLint vorder, const GLdouble *points);
void ( APIENTRY * qglMap2f )(GLenum target, GLfloat u1, GLfloat u2, GLint ustride, GLint uorder, GLfloat v1, GLfloat v2, GLint vstride, GLint vorder, const GLfloat *points);
void ( APIENTRY * qglMapGrid1d )(GLint un, GLdouble u1, GLdouble u2);
void ( APIENTRY * qglMapGrid1f )(GLint un, GLfloat u1, GLfloat u2);
void ( APIENTRY * qglMapGrid2d )(GLint un, GLdouble u1, GLdouble u2, GLint vn, GLdouble v1, GLdouble v2);
void ( APIENTRY * qglMapGrid2f )(GLint un, GLfloat u1, GLfloat u2, GLint vn, GLfloat v1, GLfloat v2);
void ( APIENTRY * qglMaterialf )(GLenum face, GLenum pname, GLfloat param);
void ( APIENTRY * qglMaterialfv )(GLenum face, GLenum pname, const GLfloat *params);
void ( APIENTRY * qglMateriali )(GLenum face, GLenum pname, GLint param);
void ( APIENTRY * qglMaterialiv )(GLenum face, GLenum pname, const GLint *params);
void ( APIENTRY * qglMatrixMode )(GLenum mode);
void ( APIENTRY * qglMultMatrixd )(const GLdouble *m);
void ( APIENTRY * qglMultMatrixf )(const GLfloat *m);
void ( APIENTRY * qglNewList )(GLuint list, GLenum mode);
void ( APIENTRY * qglNormal3b )(GLbyte nx, GLbyte ny, GLbyte nz);
void ( APIENTRY * qglNormal3bv )(const GLbyte *v);
void ( APIENTRY * qglNormal3d )(GLdouble nx, GLdouble ny, GLdouble nz);
void ( APIENTRY * qglNormal3dv )(const GLdouble *v);
void ( APIENTRY * qglNormal3f )(GLfloat nx, GLfloat ny, GLfloat nz);
void ( APIENTRY * qglNormal3fv )(const GLfloat *v);
void ( APIENTRY * qglNormal3i )(GLint nx, GLint ny, GLint nz);
void ( APIENTRY * qglNormal3iv )(const GLint *v);
void ( APIENTRY * qglNormal3s )(GLshort nx, GLshort ny, GLshort nz);
void ( APIENTRY * qglNormal3sv )(const GLshort *v);
void ( APIENTRY * qglNormalPointer )(GLenum type, GLsizei stride, const GLvoid *pointer);
void ( APIENTRY * qglOrtho )(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble zNear, GLdouble zFar);
void ( APIENTRY * qglPassThrough )(GLfloat token);
void ( APIENTRY * qglPixelMapfv )(GLenum map, GLsizei mapsize, const GLfloat *values);
void ( APIENTRY * qglPixelMapuiv )(GLenum map, GLsizei mapsize, const GLuint *values);
void ( APIENTRY * qglPixelMapusv )(GLenum map, GLsizei mapsize, const GLushort *values);