static int GLimp_InitGL( void )
{
PIXELFORMATDESCRIPTOR pfd =
{
sizeof( PIXELFORMATDESCRIPTOR ), // size of this pfd
1, // version number
PFD_DRAW_TO_WINDOW | // support window
PFD_SUPPORT_OPENGL | // support OpenGL
PFD_DOUBLEBUFFER, // double buffered
PFD_TYPE_RGBA, // RGBA type
32, // 32-bit color depth
0, 0, 0, 0, 0, 0, // color bits ignored
0, // no alpha buffer
0, // shift bit ignored
0, // no accumulation buffer
0, 0, 0, 0, // accum bits ignored
24, // 32-bit z-buffer
0, // no stencil buffer
0, // no auxiliary buffer
PFD_MAIN_PLANE, // main layer
0, // reserved
0, 0, 0 // layer masks ignored
};
int pixelformat;
cvar_t *stereo;
stereo = Cvar_Get( "cl_stereo", "0", 0 );
pfd.cStencilBits = max( 0, r_stencilbits->integer );
if( pfd.cStencilBits != 0 )
glState.stencilEnabled = qtrue;
else
glState.stencilEnabled = qfalse;
/*
** set PFD_STEREO if necessary
*/
if( stereo->integer != 0 )
{
Com_Printf( "...attempting to use stereo\n" );
pfd.dwFlags |= PFD_STEREO;
glState.stereoEnabled = qtrue;
}
else
{
glState.stereoEnabled = qfalse;
}
/*
** figure out if we're running on a minidriver or not
*/
if( strstr( gl_driver->string, "opengl32" ) != 0 )
glw_state.minidriver = qfalse;
else
glw_state.minidriver = qtrue;
/*
** Get a DC for the specified window
*/
if( glw_state.hDC != NULL )
Com_Printf( "GLimp_Init() - non-NULL DC exists\n" );
if( ( glw_state.hDC = GetDC( glw_state.hWnd ) ) == NULL )
{
Com_Printf( "GLimp_Init() - GetDC failed\n" );
return qfalse;
}
if( glw_state.minidriver )
{
if( ( pixelformat = qwglChoosePixelFormat( glw_state.hDC, &pfd ) ) == 0 )
{
Com_Printf( "GLimp_Init() - qwglChoosePixelFormat failed\n" );
return qfalse;
}
if( qwglSetPixelFormat( glw_state.hDC, pixelformat, &pfd ) == FALSE )
{
Com_Printf( "GLimp_Init() - qwglSetPixelFormat failed\n" );
return qfalse;
}
qwglDescribePixelFormat( glw_state.hDC, pixelformat, sizeof( pfd ), &pfd );
}
else
{
if( ( pixelformat = ChoosePixelFormat( glw_state.hDC, &pfd ) ) == 0 )
{
Com_Printf( "GLimp_Init() - ChoosePixelFormat failed\n" );
return qfalse;
}
if( SetPixelFormat( glw_state.hDC, pixelformat, &pfd ) == FALSE )
{
Com_Printf( "GLimp_Init() - SetPixelFormat failed\n" );
return qfalse;
}
DescribePixelFormat( glw_state.hDC, pixelformat, sizeof( pfd ), &pfd );
if( !( pfd.dwFlags & PFD_GENERIC_ACCELERATED ) )
{
extern cvar_t *r_allow_software;
if( r_allow_software->integer )
glw_state.mcd_accelerated = qtrue;
else
glw_state.mcd_accelerated = qfalse;
}
else
{
glw_state.mcd_accelerated = qtrue;
}
}
/*
** report if stereo is desired but unavailable
*/
if( !( pfd.dwFlags & PFD_STEREO ) && ( stereo->integer != 0 ) )
{
Com_Printf( "...failed to select stereo pixel format\n" );
Cvar_SetValue( "cl_stereo", 0 );
glState.stereoEnabled = qfalse;
}
/*
** startup the OpenGL subsystem by creating a context and making
** it current
*/
if( ( glw_state.hGLRC = qwglCreateContext( glw_state.hDC ) ) == 0 )
{
Com_Printf( "GLimp_Init() - qwglCreateContext failed\n" );
goto fail;
}
if( !qwglMakeCurrent( glw_state.hDC, glw_state.hGLRC ) )
{
Com_Printf( "GLimp_Init() - qwglMakeCurrent failed\n" );
goto fail;
}
if( !VerifyDriver() )
{
Com_Printf( "GLimp_Init() - no hardware acceleration detected\n" );
goto fail;
}
/*
** print out PFD specifics
*/
Com_Printf( "GL PFD: color(%d-bits) Z(%d-bit) stencil(%d-bits)\n", ( int ) pfd.cColorBits, ( int ) pfd.cDepthBits, ( int )pfd.cStencilBits );
return qtrue;
fail:
if( glw_state.hGLRC )
{
qwglDeleteContext( glw_state.hGLRC );
glw_state.hGLRC = NULL;
}
if( glw_state.hDC )
{
ReleaseDC( glw_state.hWnd, glw_state.hDC );
glw_state.hDC = NULL;
}
return qfalse;
}
/*
** GLW_MakeContext
*/
static int GLW_MakeContext( PIXELFORMATDESCRIPTOR *pPFD )
{
int pixelformat;
//
// don't putz around with pixelformat if it's already set (e.g. this is a soft
// reset of the graphics system)
//
if ( !glw_state.pixelFormatSet )
{
//
// choose, set, and describe our desired pixel format. If we're
// using a minidriver then we need to bypass the GDI functions,
// otherwise use the GDI functions.
//
if ( ( pixelformat = GLW_ChoosePFD( glw_state.hDC, pPFD ) ) == 0 )
{
ri.Printf( PRINT_ALL, "...GLW_ChoosePFD failed\n");
return TRY_PFD_FAIL_SOFT;
}
ri.Printf( PRINT_ALL, "...PIXELFORMAT %d selected\n", pixelformat );
if ( glConfig.driverType > GLDRV_ICD )
{
qwglDescribePixelFormat( glw_state.hDC, pixelformat, sizeof( *pPFD ), pPFD );
if ( qwglSetPixelFormat( glw_state.hDC, pixelformat, pPFD ) == FALSE )
{
ri.Printf ( PRINT_ALL, "...qwglSetPixelFormat failed\n");
return TRY_PFD_FAIL_SOFT;
}
}
else
{
DescribePixelFormat( glw_state.hDC, pixelformat, sizeof( *pPFD ), pPFD );
if ( SetPixelFormat( glw_state.hDC, pixelformat, pPFD ) == FALSE )
{
ri.Printf (PRINT_ALL, "...SetPixelFormat failed\n", glw_state.hDC );
return TRY_PFD_FAIL_SOFT;
}
}
glw_state.pixelFormatSet = qtrue;
}
//
// startup the OpenGL subsystem by creating a context and making it current
//
if ( !glw_state.hGLRC )
{
ri.Printf( PRINT_ALL, "...creating GL context: " );
if ( ( glw_state.hGLRC = qwglCreateContext( glw_state.hDC ) ) == 0 )
{
ri.Printf (PRINT_ALL, "failed\n");
return TRY_PFD_FAIL_HARD;
}
ri.Printf( PRINT_ALL, "succeeded\n" );
ri.Printf( PRINT_ALL, "...making context current: " );
if ( !qwglMakeCurrent( glw_state.hDC, glw_state.hGLRC ) )
{
qwglDeleteContext( glw_state.hGLRC );
glw_state.hGLRC = NULL;
ri.Printf (PRINT_ALL, "failed\n");
return TRY_PFD_FAIL_HARD;
}
ri.Printf( PRINT_ALL, "succeeded\n" );
}
return TRY_PFD_SUCCESS;
}
static int GLW_ChoosePFD( HDC hDC, PIXELFORMATDESCRIPTOR *pPFD )
{
PIXELFORMATDESCRIPTOR pfds[MAX_PFDS+1];
int maxPFD = 0;
int i;
int bestMatch = 0;
ri.Printf( PRINT_ALL, "...GLW_ChoosePFD( %d, %d, %d )\n", ( int ) pPFD->cColorBits, ( int ) pPFD->cDepthBits, ( int ) pPFD->cStencilBits );
// count number of PFDs
if ( glConfig.driverType > GLDRV_ICD )
{
maxPFD = qwglDescribePixelFormat( hDC, 1, sizeof( PIXELFORMATDESCRIPTOR ), &pfds[0] );
}
else
{
maxPFD = DescribePixelFormat( hDC, 1, sizeof( PIXELFORMATDESCRIPTOR ), &pfds[0] );
}
if ( maxPFD > MAX_PFDS )
{
ri.Printf( PRINT_WARNING, "...numPFDs > MAX_PFDS (%d > %d)\n", maxPFD, MAX_PFDS );
maxPFD = MAX_PFDS;
}
ri.Printf( PRINT_ALL, "...%d PFDs found\n", maxPFD - 1 );
// grab information
for ( i = 1; i <= maxPFD; i++ )
{
if ( glConfig.driverType > GLDRV_ICD )
{
qwglDescribePixelFormat( hDC, i, sizeof( PIXELFORMATDESCRIPTOR ), &pfds[i] );
}
else
{
DescribePixelFormat( hDC, i, sizeof( PIXELFORMATDESCRIPTOR ), &pfds[i] );
}
}
// look for a best match
for ( i = 1; i <= maxPFD; i++ )
{
//
// make sure this has hardware acceleration
//
if ( ( pfds[i].dwFlags & PFD_GENERIC_FORMAT ) != 0 )
{
if ( !r_allowSoftwareGL->integer )
{
if ( r_verbose->integer )
{
ri.Printf( PRINT_ALL, "...PFD %d rejected, software acceleration\n", i );
}
continue;
}
}
// verify pixel type
if ( pfds[i].iPixelType != PFD_TYPE_RGBA )
{
if ( r_verbose->integer )
{
ri.Printf( PRINT_ALL, "...PFD %d rejected, not RGBA\n", i );
}
continue;
}
// verify proper flags
if ( ( ( pfds[i].dwFlags & pPFD->dwFlags ) & pPFD->dwFlags ) != pPFD->dwFlags )
{
if ( r_verbose->integer )
{
ri.Printf( PRINT_ALL, "...PFD %d rejected, improper flags (%x instead of %x)\n", i, pfds[i].dwFlags, pPFD->dwFlags );
}
continue;
}
// verify enough bits
if ( pfds[i].cDepthBits < 15 )
{
continue;
}
if ( ( pfds[i].cStencilBits < 4 ) && ( pPFD->cStencilBits > 0 ) )
{
continue;
}
//
// selection criteria (in order of priority):
//
// PFD_STEREO
// colorBits
// depthBits
// stencilBits
//
if ( bestMatch )
{
// check stereo
if ( ( pfds[i].dwFlags & PFD_STEREO ) && ( !( pfds[bestMatch].dwFlags & PFD_STEREO ) ) && ( pPFD->dwFlags & PFD_STEREO ) )
{
bestMatch = i;
continue;
}
if ( !( pfds[i].dwFlags & PFD_STEREO ) && ( pfds[bestMatch].dwFlags & PFD_STEREO ) && ( pPFD->dwFlags & PFD_STEREO ) )
{
bestMatch = i;
continue;
}
// check color
if ( pfds[bestMatch].cColorBits != pPFD->cColorBits )
{
// prefer perfect match
if ( pfds[i].cColorBits == pPFD->cColorBits )
{
bestMatch = i;
continue;
}
// otherwise if this PFD has more bits than our best, use it
else if ( pfds[i].cColorBits > pfds[bestMatch].cColorBits )
{
bestMatch = i;
continue;
}
}
// check depth
if ( pfds[bestMatch].cDepthBits != pPFD->cDepthBits )
{
// prefer perfect match
if ( pfds[i].cDepthBits == pPFD->cDepthBits )
{
bestMatch = i;
continue;
}
// otherwise if this PFD has more bits than our best, use it
else if ( pfds[i].cDepthBits > pfds[bestMatch].cDepthBits )
{
bestMatch = i;
continue;
}
}
// check stencil
if ( pfds[bestMatch].cStencilBits != pPFD->cStencilBits )
{
// prefer perfect match
if ( pfds[i].cStencilBits == pPFD->cStencilBits )
{
bestMatch = i;
continue;
}
// otherwise if this PFD has more bits than our best, use it
else if ( ( pfds[i].cStencilBits > pfds[bestMatch].cStencilBits ) &&
( pPFD->cStencilBits > 0 ) )
{
bestMatch = i;
continue;
}
}
}
else
{
bestMatch = i;
}
}
if ( !bestMatch )
return 0;
if ( ( pfds[bestMatch].dwFlags & PFD_GENERIC_FORMAT ) != 0 )
{
if ( !r_allowSoftwareGL->integer )
{
ri.Printf( PRINT_ALL, "...no hardware acceleration found\n" );
return 0;
}
else
{
ri.Printf( PRINT_ALL, "...using software emulation\n" );
}
}
else if ( pfds[bestMatch].dwFlags & PFD_GENERIC_ACCELERATED )
{
ri.Printf( PRINT_ALL, "...MCD acceleration found\n" );
}
else
{
ri.Printf( PRINT_ALL, "...hardware acceleration found\n" );
}
*pPFD = pfds[bestMatch];
return bestMatch;
}
static int SetupGL(int colorbits, int depthbits, int stencilbits, int multisamples)
{
PIXELFORMATDESCRIPTOR pfd;
int pixelformat;
// create the main window
Win_Init();
if (colorbits == 0)
colorbits = 24;
if (depthbits == 0)
depthbits = colorbits > 16 ? 24 : 16;
if (depthbits < 24)
stencilbits = 0;
// choose pixel format
if (qwglChoosePixelFormatARB && multisamples > 1) {
int iAttributes[20];
UINT numFormats;
iAttributes[0] = WGL_DRAW_TO_WINDOW_ARB;
iAttributes[1] = TRUE;
iAttributes[2] = WGL_SUPPORT_OPENGL_ARB;
iAttributes[3] = TRUE;
iAttributes[4] = WGL_DOUBLE_BUFFER_ARB;
iAttributes[5] = TRUE;
iAttributes[6] = WGL_PIXEL_TYPE_ARB;
iAttributes[7] = WGL_TYPE_RGBA_ARB;
iAttributes[8] = WGL_COLOR_BITS_ARB;
iAttributes[9] = colorbits;
iAttributes[10] = WGL_DEPTH_BITS_ARB;
iAttributes[11] = depthbits;
iAttributes[12] = WGL_STENCIL_BITS_ARB;
iAttributes[13] = stencilbits;
iAttributes[14] = WGL_SAMPLE_BUFFERS_ARB;
iAttributes[15] = 1;
iAttributes[16] = WGL_SAMPLES_ARB;
iAttributes[17] = multisamples;
iAttributes[18] = 0;
iAttributes[19] = 0;
if (qwglChoosePixelFormatARB(win.dc, iAttributes, NULL, 1, &pixelformat, &numFormats) == FALSE) {
ReportLastError("wglChoosePixelFormatARB");
goto soft;
}
if (numFormats == 0) {
Com_EPrintf("No suitable OpenGL pixelformat found for %d multisamples\n", multisamples);
goto soft;
}
} else {
memset(&pfd, 0, sizeof(pfd));
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = colorbits;
pfd.cDepthBits = depthbits;
pfd.cStencilBits = stencilbits;
pfd.iLayerType = PFD_MAIN_PLANE;
if (glw.minidriver) {
if ((pixelformat = qwglChoosePixelFormat(win.dc, &pfd)) == 0) {
ReportLastError("wglChoosePixelFormat");
goto soft;
}
} else {
if ((pixelformat = ChoosePixelFormat(win.dc, &pfd)) == 0) {
ReportLastError("ChoosePixelFormat");
goto soft;
}
}
}
// set pixel format
if (glw.minidriver) {
qwglDescribePixelFormat(win.dc, pixelformat, sizeof(pfd), &pfd);
ReportPixelFormat(pixelformat, &pfd);
if (qwglSetPixelFormat(win.dc, pixelformat, &pfd) == FALSE) {
ReportLastError("wglSetPixelFormat");
goto soft;
}
} else {
DescribePixelFormat(win.dc, pixelformat, sizeof(pfd), &pfd);
ReportPixelFormat(pixelformat, &pfd);
if (SetPixelFormat(win.dc, pixelformat, &pfd) == FALSE) {
ReportLastError("SetPixelFormat");
goto soft;
}
}
// check for software emulation
if (pfd.dwFlags & PFD_GENERIC_FORMAT) {
if (!gl_allow_software->integer) {
Com_EPrintf("No hardware OpenGL acceleration detected\n");
goto soft;
}
Com_WPrintf("...using software emulation\n");
} else if (pfd.dwFlags & PFD_GENERIC_ACCELERATED) {
Com_DPrintf("...MCD acceleration found\n");
win.flags |= QVF_ACCELERATED;
} else {
Com_DPrintf("...ICD acceleration found\n");
win.flags |= QVF_ACCELERATED;
}
// startup the OpenGL subsystem by creating a context and making it current
if ((glw.hGLRC = qwglCreateContext(win.dc)) == NULL) {
ReportLastError("wglCreateContext");
goto hard;
}
if (qwglMakeCurrent(win.dc, glw.hGLRC) == FALSE) {
ReportLastError("wglMakeCurrent");
qwglDeleteContext(glw.hGLRC);
glw.hGLRC = NULL;
goto hard;
}
return FAIL_OK;
soft:
// it failed, clean up
Win_Shutdown();
return FAIL_SOFT;
hard:
Win_Shutdown();
return FAIL_HARD;
}
qboolean GLimp_InitGL (void)
{
PIXELFORMATDESCRIPTOR pfd =
{
sizeof(PIXELFORMATDESCRIPTOR), // size of this pfd
1, // version number
PFD_DRAW_TO_WINDOW | // support window
PFD_SUPPORT_OPENGL | // support OpenGL
PFD_DOUBLEBUFFER, // double buffered
PFD_TYPE_RGBA, // RGBA type
32, // 32-bit color depth // was 24
0, 0, 0, 0, 0, 0, // color bits ignored
0, // no alpha buffer
0, // shift bit ignored
0, // no accumulation buffer
0, 0, 0, 0, // accum bits ignored
//Knightmare 12/24/2001- stencil buffer
24, // 24-bit z-buffer, was 32
8, // 8-bit stencil buffer
//end Knightmare
0, // no auxiliary buffer
PFD_MAIN_PLANE, // main layer
0, // reserved
0, 0, 0 // layer masks ignored
};
int pixelformat;
cvar_t *stereo;
stereo = Cvar_Get( "cl_stereo", "0", 0 );
/*
** set PFD_STEREO if necessary
*/
if ( stereo->value != 0 )
{
VID_Printf( PRINT_ALL, "...attempting to use stereo\n" );
pfd.dwFlags |= PFD_STEREO;
gl_state.stereo_enabled = true;
}
else
{
gl_state.stereo_enabled = false;
}
/*
** figure out if we're running on a minidriver or not
*/
if ( strstr( gl_driver->string, "opengl32" ) != 0 )
glw_state.minidriver = false;
else
glw_state.minidriver = true;
/*
** Get a DC for the specified window
*/
if ( glw_state.hDC != NULL )
VID_Printf( PRINT_ALL, "GLimp_Init() - non-NULL DC exists\n" );
if ( ( glw_state.hDC = GetDC( glw_state.hWnd ) ) == NULL )
{
VID_Printf( PRINT_ALL, "GLimp_Init() - GetDC failed\n" );
return false;
}
if ( glw_state.minidriver )
{
if ( (pixelformat = qwglChoosePixelFormat( glw_state.hDC, &pfd)) == 0 )
{
VID_Printf (PRINT_ALL, "GLimp_Init() - qwglChoosePixelFormat failed\n");
return false;
}
if ( qwglSetPixelFormat( glw_state.hDC, pixelformat, &pfd) == FALSE )
{
VID_Printf (PRINT_ALL, "GLimp_Init() - qwglSetPixelFormat failed\n");
return false;
}
qwglDescribePixelFormat( glw_state.hDC, pixelformat, sizeof( pfd ), &pfd );
}
else
{
if ( ( pixelformat = ChoosePixelFormat( glw_state.hDC, &pfd)) == 0 )
{
VID_Printf (PRINT_ALL, "GLimp_Init() - ChoosePixelFormat failed\n");
return false;
}
if ( SetPixelFormat( glw_state.hDC, pixelformat, &pfd) == FALSE )
{
VID_Printf (PRINT_ALL, "GLimp_Init() - SetPixelFormat failed\n");
return false;
}
DescribePixelFormat( glw_state.hDC, pixelformat, sizeof( pfd ), &pfd );
if ( !( pfd.dwFlags & PFD_GENERIC_ACCELERATED ) )
{
extern cvar_t *gl_allow_software;
if ( gl_allow_software->value )
glw_state.mcd_accelerated = true;
else
glw_state.mcd_accelerated = false;
}
else
{
glw_state.mcd_accelerated = true;
}
}
/*
** report if stereo is desired but unavailable
*/
if ( !( pfd.dwFlags & PFD_STEREO ) && ( stereo->value != 0 ) )
{
VID_Printf( PRINT_ALL, "...failed to select stereo pixel format\n" );
Cvar_SetValue( "cl_stereo", 0 );
gl_state.stereo_enabled = false;
}
/*
** startup the OpenGL subsystem by creating a context and making
** it current
*/
if ( ( glw_state.hGLRC = qwglCreateContext( glw_state.hDC ) ) == 0 )
{
VID_Printf (PRINT_ALL, "GLimp_Init() - qwglCreateContext failed\n");
goto fail;
}
if ( !qwglMakeCurrent( glw_state.hDC, glw_state.hGLRC ) )
{
VID_Printf (PRINT_ALL, "GLimp_Init() - qwglMakeCurrent failed\n");
goto fail;
}
if ( !VerifyDriver() )
{
VID_Printf( PRINT_ALL, "GLimp_Init() - no hardware acceleration detected.\nPlease install drivers provided by your video card/GPU vendor.\n" );
goto fail;
}
/*
** print out PFD specifics
*/
VID_Printf( PRINT_ALL, "PIXELFORMAT: color(%d-bits) Z(%d-bit)\n", ( int ) pfd.cColorBits, ( int ) pfd.cDepthBits );
//Knightmare- Vic's hardware gamma stuff
if ( !r_ignorehwgamma->value )
{
if( qwglGetDeviceGammaRamp3DFX )
{
WORD newramp[3*256];
int j;
gl_state.gammaRamp = qwglGetDeviceGammaRamp3DFX ( glw_state.hDC, newramp );
for( j = 0; j < 256; j++ )
{
original_ramp[0][j] = newramp[j+0];
original_ramp[1][j] = newramp[j+256];
original_ramp[2][j] = newramp[j+512];
}
} else
{
gl_state.gammaRamp = GetDeviceGammaRamp ( glw_state.hDC, original_ramp );
}
}
else
{
gl_state.gammaRamp = false;
}
if (gl_state.gammaRamp)
vid_gamma->modified = true;
// moved these to GL_SetDefaultState
//gl_state.blend = false;
//gl_state.alphaTest = false;
//end Knightmare
//Knightmare- 12/24/2001- stecil buffer
{
char buffer[1024];
strcpy( buffer, qglGetString( GL_RENDERER ) );
strlwr( buffer );
if (strstr(buffer, "Voodoo3")) {
VID_Printf( PRINT_ALL, "... Voodoo3 has no stencil buffer\n" );
gl_config.have_stencil = false;
} else {
if (pfd.cStencilBits) {
VID_Printf( PRINT_ALL, "... Using stencil buffer\n" );
gl_config.have_stencil = true; // Stencil shadows - MrG
}
}
}
//if (pfd.cStencilBits)
// gl_config.have_stencil = true;
//end Knightmare
/* Moved to GL_SetDefaultState in r_glstate.c
// Vertex arrays
qglEnableClientState (GL_TEXTURE_COORD_ARRAY);
qglEnableClientState (GL_VERTEX_ARRAY);
qglEnableClientState (GL_COLOR_ARRAY);
qglTexCoordPointer (2, GL_FLOAT, sizeof(texCoordArray[0][0]), texCoordArray[0][0]);
qglVertexPointer (3, GL_FLOAT, sizeof(vertexArray[0]), vertexArray[0]);
qglColorPointer (4, GL_FLOAT, sizeof(colorArray[0]), colorArray[0]);
//gl_state.activetmu[0] = true;
// end vertex arrays
*/
return true;
fail:
if ( glw_state.hGLRC )
{
qwglDeleteContext( glw_state.hGLRC );
glw_state.hGLRC = NULL;
}
if ( glw_state.hDC )
{
ReleaseDC( glw_state.hWnd, glw_state.hDC );
glw_state.hDC = NULL;
}
return false;
}
qboolean GLimp_InitGL (void)
{
PIXELFORMATDESCRIPTOR pfd =
{
sizeof(PIXELFORMATDESCRIPTOR), // size of this pfd
1, // version number
PFD_DRAW_TO_WINDOW | // support window
PFD_SUPPORT_OPENGL | // support OpenGL
PFD_DOUBLEBUFFER, // double buffered
PFD_TYPE_RGBA, // RGBA type
24, // 24-bit color depth
0, 0, 0, 0, 0, 0, // color bits ignored
0, // no alpha buffer
0, // shift bit ignored
0, // no accumulation buffer
0, 0, 0, 0, // accum bits ignored
24, // 32-bit z-buffer
8, // no stencil buffer
0, // no auxiliary buffer
PFD_MAIN_PLANE, // main layer
0, // reserved
0, 0, 0 // layer masks ignored
};
int pixelformat;
cvar_t *stereo;
stereo = Cvar_Get( "cl_stereo", "0", 0 );
/*
** set PFD_STEREO if necessary
*/
if (stereo->integer)
{
Com_Printf ( "...attempting to use stereo\n" );
pfd.dwFlags |= PFD_STEREO;
gl_state.stereo_enabled = true;
}
else
{
gl_state.stereo_enabled = false;
}
/*
** figure out if we're running on a minidriver or not
*/
if (Q_stristr( gl_driver->string, "opengl32" ) != 0 )
glw_state.minidriver = false;
else
glw_state.minidriver = true;
/*
** Get a DC for the specified window
*/
if ( glw_state.hDC != NULL )
Com_Printf ( "GLimp_Init() - non-NULL DC exists\n" );
if ( ( glw_state.hDC = GetDC( glw_state.hWnd ) ) == NULL )
{
PrintWinError("GLimp_Init() - GetDC", false);
return false;
}
if ( glw_state.minidriver )
{
if ( (pixelformat = qwglChoosePixelFormat( glw_state.hDC, &pfd)) == 0 )
{
PrintWinError("GLimp_Init() - wglChoosePixelFormat", false);
return false;
}
if ( qwglSetPixelFormat( glw_state.hDC, pixelformat, &pfd) == FALSE )
{
PrintWinError("GLimp_Init() - wglSetPixelFormat", false);
return false;
}
qwglDescribePixelFormat(glw_state.hDC, pixelformat, sizeof( pfd ), &pfd );
}
else
{
if ((pixelformat = ChoosePixelFormat(glw_state.hDC, &pfd)) == 0)
{
PrintWinError("GLimp_Init() - ChoosePixelFormat", false);
return false;
}
if (SetPixelFormat( glw_state.hDC, pixelformat, &pfd) == FALSE)
{
PrintWinError("GLimp_Init() - SetPixelFormat", false);
return false;
}
DescribePixelFormat( glw_state.hDC, pixelformat, sizeof( pfd ), &pfd );
if ( !( pfd.dwFlags & PFD_GENERIC_ACCELERATED ) )
{
extern cvar_t *gl_allow_software;
if ( gl_allow_software->integer )
glw_state.mcd_accelerated = true;
else
glw_state.mcd_accelerated = false;
}
else
{
glw_state.mcd_accelerated = true;
}
}
/*
** report if stereo is desired but unavailable
*/
if ( !( pfd.dwFlags & PFD_STEREO ) && ( stereo->value != 0 ) )
{
Com_Printf("...failed to select stereo pixel format\n");
Cvar_Set("cl_stereo", "0");
gl_state.stereo_enabled = false;
}
/*
** startup the OpenGL subsystem by creating a context and making
** it current
*/
if ((glw_state.hGLRC = qwglCreateContext(glw_state.hDC)) == 0)
{
PrintWinError("GLimp_Init() - wglCreateContext", false);
return false;
}
if (!qwglMakeCurrent(glw_state.hDC, glw_state.hGLRC))
{
PrintWinError("GLimp_Init() - wglMakeCurrent", false);
return false;
}
if (!VerifyDriver())
{
Com_Error(ERR_FATAL, "GLimp_Init() - no hardware acceleration detected");
return false;
}
/*
** print out PFD specifics
*/
Com_Printf("GL PFD: Color(%dbits) Depth(%dbits) Stencil(%dbits)\n", (int)pfd.cColorBits, (int)pfd.cDepthBits, (int)pfd.cStencilBits);
{
char buffer[1024];
Q_strncpyz( buffer, (const char *)qglGetString( GL_RENDERER ), sizeof(buffer));
Q_strlwr( buffer );
gl_state.stencil = false;
if (strstr(buffer, "voodoo3"))
{
Com_Printf("... Voodoo3 has no stencil buffer\n");
}
else
{
if (pfd.cStencilBits > 0)
{
Com_Printf("... Using stencil buffer\n");
gl_state.stencil = true; // Stencil shadows -MrG
}
}
}
return true;
}
