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/*
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.
*/
#include "win_local.h"
#include "win_glimp.h"
#include "win_wgl.h"
void ( APIENTRY * qglDrawBuffer )(GLenum mode);
const GLubyte * ( APIENTRY * qglGetString )(GLenum name);
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 * qwglSwapIntervalEXT)( int interval );
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 * 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);
BOOL ( WINAPI * qwglGetDeviceGammaRampEXT)( unsigned char *, unsigned char *, unsigned char * );
BOOL ( WINAPI * qwglSetDeviceGammaRampEXT)( const unsigned char *, const unsigned char *, const unsigned char * );
void WGL_Shutdown( void ) {
if( glw.hinstOpenGL ) {
FreeLibrary( glw.hinstOpenGL );
glw.hinstOpenGL = NULL;
}
qglDrawBuffer = NULL;
qglGetString = NULL;
qwglCopyContext = NULL;
qwglCreateContext = NULL;
qwglCreateLayerContext = NULL;
qwglDeleteContext = NULL;
qwglDescribeLayerPlane = NULL;
qwglGetCurrentContext = NULL;
qwglGetCurrentDC = NULL;
qwglGetLayerPaletteEntries = NULL;
qwglGetProcAddress = NULL;
qwglMakeCurrent = NULL;
qwglRealizeLayerPalette = NULL;
qwglSetLayerPaletteEntries = NULL;
qwglShareLists = NULL;
qwglSwapLayerBuffers = NULL;
qwglChoosePixelFormat = NULL;
qwglDescribePixelFormat = NULL;
qwglGetPixelFormat = NULL;
qwglSetPixelFormat = NULL;
qwglSwapBuffers = NULL;
qwglSwapIntervalEXT = NULL;
qwglGetDeviceGammaRampEXT = NULL;
qwglSetDeviceGammaRampEXT = NULL;
}
#define GPA( x ) do { \
q ## x = ( void * )GetProcAddress( glw.hinstOpenGL, #x ); \
if( !q ## x ) { \
return qfalse; \
} \
} while( 0 )
qboolean WGL_Init( const char *dllname ) {
if( ( glw.hinstOpenGL = LoadLibrary( dllname ) ) == NULL ) {
return qfalse;
}
GPA( glDrawBuffer );
GPA( glGetString );
GPA( wglCopyContext );
GPA( wglCreateContext );
GPA( wglCreateLayerContext );
GPA( wglDeleteContext );
GPA( wglDescribeLayerPlane );
GPA( wglGetCurrentContext );
GPA( wglGetCurrentDC );
GPA( wglGetLayerPaletteEntries );
GPA( wglGetProcAddress );
GPA( wglMakeCurrent );
GPA( wglRealizeLayerPalette );
GPA( wglSetLayerPaletteEntries );
GPA( wglShareLists );
GPA( wglSwapLayerBuffers );
GPA( wglChoosePixelFormat );
GPA( wglDescribePixelFormat );
GPA( wglGetPixelFormat );
GPA( wglSetPixelFormat );
GPA( wglSwapBuffers );
qwglSwapIntervalEXT = NULL;
qwglGetDeviceGammaRampEXT = NULL;
qwglSetDeviceGammaRampEXT = NULL;
return qtrue;
}
void *WGL_GetProcAddress( const char *symbol ) {
return ( void * )GetProcAddress( glw.hinstOpenGL, symbol );
}
#undef GPA
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