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ioq3/code/win32/win_glimp.c

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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
===========================================================================
*/
/*
** WIN_GLIMP.C
**
** This file contains ALL Win32 specific stuff having to do with the
** OpenGL refresh. When a port is being made the following functions
** must be implemented by the port:
**
** GLimp_EndFrame
** GLimp_Init
** GLimp_LogComment
** GLimp_Shutdown
**
** Note that the GLW_xxx functions are Windows specific GL-subsystem
** related functions that are relevant ONLY to win_glimp.c
*/
#include <assert.h>
#include "../renderer/tr_local.h"
#include "../qcommon/qcommon.h"
#include "resource.h"
#include "glw_win.h"
#include "win_local.h"
extern void WG_CheckHardwareGamma( void );
extern void WG_RestoreGamma( void );
typedef enum {
RSERR_OK,
RSERR_INVALID_FULLSCREEN,
RSERR_INVALID_MODE,
RSERR_UNKNOWN
} rserr_t;
#define TRY_PFD_SUCCESS 0
#define TRY_PFD_FAIL_SOFT 1
#define TRY_PFD_FAIL_HARD 2
static void GLW_InitExtensions( void );
static rserr_t GLW_SetMode( const char *drivername,
int mode,
int colorbits,
qboolean cdsFullscreen );
static qboolean s_classRegistered = qfalse;
//
// function declaration
//
void QGL_EnableLogging( qboolean enable );
qboolean QGL_Init( const char *dllname );
void QGL_Shutdown( void );
//
// variable declarations
//
glwstate_t glw_state;
cvar_t *r_allowSoftwareGL; // don't abort out if the pixelformat claims software
cvar_t *r_maskMinidriver; // allow a different dll name to be treated as if it were opengl32.dll
/*
** GLW_StartDriverAndSetMode
*/
static qboolean GLW_StartDriverAndSetMode( const char *drivername,
int mode,
int colorbits,
qboolean cdsFullscreen )
{
rserr_t err;
err = GLW_SetMode( drivername, r_mode->integer, colorbits, cdsFullscreen );
switch ( err )
{
case RSERR_INVALID_FULLSCREEN:
ri.Printf( PRINT_ALL, "...WARNING: fullscreen unavailable in this mode\n" );
return qfalse;
case RSERR_INVALID_MODE:
ri.Printf( PRINT_ALL, "...WARNING: could not set the given mode (%d)\n", mode );
return qfalse;
default:
break;
}
return qtrue;
}
/*
** ChoosePFD
**
** Helper function that replaces ChoosePixelFormat.
*/
#define MAX_PFDS 256
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;
}
/*
** void GLW_CreatePFD
**
** Helper function zeros out then fills in a PFD
*/
static void GLW_CreatePFD( PIXELFORMATDESCRIPTOR *pPFD, int colorbits, int depthbits, int stencilbits, qboolean stereo )
{
PIXELFORMATDESCRIPTOR src =
{
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, // 24-bit z-buffer
8, // 8-bit stencil buffer
0, // no auxiliary buffer
PFD_MAIN_PLANE, // main layer
0, // reserved
0, 0, 0 // layer masks ignored
};
src.cColorBits = colorbits;
src.cDepthBits = depthbits;
src.cStencilBits = stencilbits;
if ( stereo )
{
ri.Printf( PRINT_ALL, "...attempting to use stereo\n" );
src.dwFlags |= PFD_STEREO;
glConfig.stereoEnabled = qtrue;
}
else
{
glConfig.stereoEnabled = qfalse;
}
*pPFD = src;
}
/*
** 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;
}
/*
** GLW_InitDriver
**
** - get a DC if one doesn't exist
** - create an HGLRC if one doesn't exist
*/
static qboolean GLW_InitDriver( const char *drivername, int colorbits )
{
int tpfd;
int depthbits, stencilbits;
static PIXELFORMATDESCRIPTOR pfd; // save between frames since 'tr' gets cleared
ri.Printf( PRINT_ALL, "Initializing OpenGL driver\n" );
//
// get a DC for our window if we don't already have one allocated
//
if ( glw_state.hDC == NULL )
{
ri.Printf( PRINT_ALL, "...getting DC: " );
if ( ( glw_state.hDC = GetDC( g_wv.hWnd ) ) == NULL )
{
ri.Printf( PRINT_ALL, "failed\n" );
return qfalse;
}
ri.Printf( PRINT_ALL, "succeeded\n" );
}
if ( colorbits == 0 )
{
colorbits = glw_state.desktopBitsPixel;
}
//
// implicitly assume Z-buffer depth == desktop color depth
//
if ( r_depthbits->integer == 0 ) {
if ( colorbits > 16 ) {
depthbits = 24;
} else {
depthbits = 16;
}
} else {
depthbits = r_depthbits->integer;
}
//
// do not allow stencil if Z-buffer depth likely won't contain it
//
stencilbits = r_stencilbits->integer;
if ( depthbits < 24 )
{
stencilbits = 0;
}
//
// make two attempts to set the PIXELFORMAT
//
//
// first attempt: r_colorbits, depthbits, and r_stencilbits
//
if ( !glw_state.pixelFormatSet )
{
GLW_CreatePFD( &pfd, colorbits, depthbits, stencilbits, r_stereo->integer );
if ( ( tpfd = GLW_MakeContext( &pfd ) ) != TRY_PFD_SUCCESS )
{
if ( tpfd == TRY_PFD_FAIL_HARD )
{
ri.Printf( PRINT_WARNING, "...failed hard\n" );
return qfalse;
}
//
// punt if we've already tried the desktop bit depth and no stencil bits
//
if ( ( r_colorbits->integer == glw_state.desktopBitsPixel ) &&
( stencilbits == 0 ) )
{
ReleaseDC( g_wv.hWnd, glw_state.hDC );
glw_state.hDC = NULL;
ri.Printf( PRINT_ALL, "...failed to find an appropriate PIXELFORMAT\n" );
return qfalse;
}
//
// second attempt: desktop's color bits and no stencil
//
if ( colorbits > glw_state.desktopBitsPixel )
{
colorbits = glw_state.desktopBitsPixel;
}
GLW_CreatePFD( &pfd, colorbits, depthbits, 0, r_stereo->integer );
if ( GLW_MakeContext( &pfd ) != TRY_PFD_SUCCESS )
{
if ( glw_state.hDC )
{
ReleaseDC( g_wv.hWnd, glw_state.hDC );
glw_state.hDC = NULL;
}
ri.Printf( PRINT_ALL, "...failed to find an appropriate PIXELFORMAT\n" );
return qfalse;
}
}
/*
** report if stereo is desired but unavailable
*/
if ( !( pfd.dwFlags & PFD_STEREO ) && ( r_stereo->integer != 0 ) )
{
ri.Printf( PRINT_ALL, "...failed to select stereo pixel format\n" );
glConfig.stereoEnabled = qfalse;
}
}
/*
** store PFD specifics
*/
glConfig.colorBits = ( int ) pfd.cColorBits;
glConfig.depthBits = ( int ) pfd.cDepthBits;
glConfig.stencilBits = ( int ) pfd.cStencilBits;
return qtrue;
}
/*
** GLW_CreateWindow
**
** Responsible for creating the Win32 window and initializing the OpenGL driver.
*/
#define WINDOW_STYLE (WS_OVERLAPPED|WS_BORDER|WS_CAPTION|WS_VISIBLE)
static qboolean GLW_CreateWindow( const char *drivername, int width, int height, int colorbits, qboolean cdsFullscreen )
{
RECT r;
cvar_t *vid_xpos, *vid_ypos;
int stylebits;
int x, y, w, h;
int exstyle;
//
// register the window class if necessary
//
if ( !s_classRegistered )
{
WNDCLASS wc;
memset( &wc, 0, sizeof( wc ) );
wc.style = 0;
wc.lpfnWndProc = (WNDPROC) glw_state.wndproc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = g_wv.hInstance;
wc.hIcon = LoadIcon( g_wv.hInstance, MAKEINTRESOURCE(IDI_ICON1));
wc.hCursor = LoadCursor (NULL,IDC_ARROW);
wc.hbrBackground = (void *)COLOR_GRAYTEXT;
wc.lpszMenuName = 0;
wc.lpszClassName = CLIENT_WINDOW_TITLE;
if ( !RegisterClass( &wc ) )
{
ri.Error( ERR_FATAL, "GLW_CreateWindow: could not register window class" );
}
s_classRegistered = qtrue;
ri.Printf( PRINT_ALL, "...registered window class\n" );
}
//
// create the HWND if one does not already exist
//
if ( !g_wv.hWnd )
{
//
// compute width and height
//
r.left = 0;
r.top = 0;
r.right = width;
r.bottom = height;
if ( cdsFullscreen || !Q_stricmp( _3DFX_DRIVER_NAME, drivername ) )
{
exstyle = WS_EX_TOPMOST;
stylebits = WS_POPUP|WS_VISIBLE|WS_SYSMENU;
}
else
{
exstyle = 0;
stylebits = WINDOW_STYLE|WS_SYSMENU;
AdjustWindowRect (&r, stylebits, FALSE);
}
w = r.right - r.left;
h = r.bottom - r.top;
if ( cdsFullscreen || !Q_stricmp( _3DFX_DRIVER_NAME, drivername ) )
{
x = 0;
y = 0;
}
else
{
vid_xpos = ri.Cvar_Get ("vid_xpos", "", 0);
vid_ypos = ri.Cvar_Get ("vid_ypos", "", 0);
x = vid_xpos->integer;
y = vid_ypos->integer;
// adjust window coordinates if necessary
// so that the window is completely on screen
if ( x < 0 )
x = 0;
if ( y < 0 )
y = 0;
if ( w < glw_state.desktopWidth &&
h < glw_state.desktopHeight )
{
if ( x + w > glw_state.desktopWidth )
x = ( glw_state.desktopWidth - w );
if ( y + h > glw_state.desktopHeight )
y = ( glw_state.desktopHeight - h );
}
}
g_wv.hWnd = CreateWindowEx (
exstyle,
CLIENT_WINDOW_TITLE,
CLIENT_WINDOW_TITLE,
stylebits,
x, y, w, h,
NULL,
NULL,
g_wv.hInstance,
NULL);
if ( !g_wv.hWnd )
{
ri.Error (ERR_FATAL, "GLW_CreateWindow() - Couldn't create window");
}
ShowWindow( g_wv.hWnd, SW_SHOW );
UpdateWindow( g_wv.hWnd );
ri.Printf( PRINT_ALL, "...created window@%d,%d (%dx%d)\n", x, y, w, h );
}
else
{
ri.Printf( PRINT_ALL, "...window already present, CreateWindowEx skipped\n" );
}
if ( !GLW_InitDriver( drivername, colorbits ) )
{
ShowWindow( g_wv.hWnd, SW_HIDE );
DestroyWindow( g_wv.hWnd );
g_wv.hWnd = NULL;
return qfalse;
}
SetForegroundWindow( g_wv.hWnd );
SetFocus( g_wv.hWnd );
return qtrue;
}
static void PrintCDSError( int value )
{
switch ( value )
{
case DISP_CHANGE_RESTART:
ri.Printf( PRINT_ALL, "restart required\n" );
break;
case DISP_CHANGE_BADPARAM:
ri.Printf( PRINT_ALL, "bad param\n" );
break;
case DISP_CHANGE_BADFLAGS:
ri.Printf( PRINT_ALL, "bad flags\n" );
break;
case DISP_CHANGE_FAILED:
ri.Printf( PRINT_ALL, "DISP_CHANGE_FAILED\n" );
break;
case DISP_CHANGE_BADMODE:
ri.Printf( PRINT_ALL, "bad mode\n" );
break;
case DISP_CHANGE_NOTUPDATED:
ri.Printf( PRINT_ALL, "not updated\n" );
break;
default:
ri.Printf( PRINT_ALL, "unknown error %d\n", value );
break;
}
}
/*
** GLW_SetMode
*/
static rserr_t GLW_SetMode( const char *drivername,
int mode,
int colorbits,
qboolean cdsFullscreen )
{
HDC hDC;
const char *win_fs[] = { "W", "FS" };
int cdsRet;
DEVMODE dm;
//
// print out informational messages
//
ri.Printf( PRINT_ALL, "...setting mode %d:", mode );
if ( !R_GetModeInfo( &glConfig.vidWidth, &glConfig.vidHeight, &glConfig.windowAspect, mode ) )
{
ri.Printf( PRINT_ALL, " invalid mode\n" );
return RSERR_INVALID_MODE;
}
ri.Printf( PRINT_ALL, " %d %d %s\n", glConfig.vidWidth, glConfig.vidHeight, win_fs[cdsFullscreen] );
//
// check our desktop attributes
//
hDC = GetDC( GetDesktopWindow() );
glw_state.desktopBitsPixel = GetDeviceCaps( hDC, BITSPIXEL );
glw_state.desktopWidth = GetDeviceCaps( hDC, HORZRES );
glw_state.desktopHeight = GetDeviceCaps( hDC, VERTRES );
ReleaseDC( GetDesktopWindow(), hDC );
//
// verify desktop bit depth
//
if ( glConfig.driverType != GLDRV_VOODOO )
{
if ( glw_state.desktopBitsPixel < 15 || glw_state.desktopBitsPixel == 24 )
{
if ( colorbits == 0 || ( !cdsFullscreen && colorbits >= 15 ) )
{
if ( MessageBox( NULL,
"It is highly unlikely that a correct\n"
"windowed display can be initialized with\n"
"the current desktop display depth. Select\n"
"'OK' to try anyway. Press 'Cancel' if you\n"
"have a 3Dfx Voodoo, Voodoo-2, or Voodoo Rush\n"
"3D accelerator installed, or if you otherwise\n"
"wish to quit.",
"Low Desktop Color Depth",
MB_OKCANCEL | MB_ICONEXCLAMATION ) != IDOK )
{
return RSERR_INVALID_MODE;
}
}
}
}
// do a CDS if needed
if ( cdsFullscreen )
{
memset( &dm, 0, sizeof( dm ) );
dm.dmSize = sizeof( dm );
dm.dmPelsWidth = glConfig.vidWidth;
dm.dmPelsHeight = glConfig.vidHeight;
dm.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT;
if ( r_displayRefresh->integer != 0 )
{
dm.dmDisplayFrequency = r_displayRefresh->integer;
dm.dmFields |= DM_DISPLAYFREQUENCY;
}
// try to change color depth if possible
if ( colorbits != 0 )
{
if ( glw_state.allowdisplaydepthchange )
{
dm.dmBitsPerPel = colorbits;
dm.dmFields |= DM_BITSPERPEL;
ri.Printf( PRINT_ALL, "...using colorsbits of %d\n", colorbits );
}
else
{
ri.Printf( PRINT_ALL, "WARNING:...changing depth not supported on Win95 < pre-OSR 2.x\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...using desktop display depth of %d\n", glw_state.desktopBitsPixel );
}
//
// if we're already in fullscreen then just create the window
//
if ( glw_state.cdsFullscreen )
{
ri.Printf( PRINT_ALL, "...already fullscreen, avoiding redundant CDS\n" );
if ( !GLW_CreateWindow ( drivername, glConfig.vidWidth, glConfig.vidHeight, colorbits, qtrue ) )
{
ri.Printf( PRINT_ALL, "...restoring display settings\n" );
ChangeDisplaySettings( 0, 0 );
return RSERR_INVALID_MODE;
}
}
//
// need to call CDS
//
else
{
ri.Printf( PRINT_ALL, "...calling CDS: " );
// try setting the exact mode requested, because some drivers don't report
// the low res modes in EnumDisplaySettings, but still work
if ( ( cdsRet = ChangeDisplaySettings( &dm, CDS_FULLSCREEN ) ) == DISP_CHANGE_SUCCESSFUL )
{
ri.Printf( PRINT_ALL, "ok\n" );
if ( !GLW_CreateWindow ( drivername, glConfig.vidWidth, glConfig.vidHeight, colorbits, qtrue) )
{
ri.Printf( PRINT_ALL, "...restoring display settings\n" );
ChangeDisplaySettings( 0, 0 );
return RSERR_INVALID_MODE;
}
glw_state.cdsFullscreen = qtrue;
}
else
{
//
// the exact mode failed, so scan EnumDisplaySettings for the next largest mode
//
DEVMODE devmode;
int modeNum;
ri.Printf( PRINT_ALL, "failed, " );
PrintCDSError( cdsRet );
ri.Printf( PRINT_ALL, "...trying next higher resolution:" );
// we could do a better matching job here...
for ( modeNum = 0 ; ; modeNum++ ) {
if ( !EnumDisplaySettings( NULL, modeNum, &devmode ) ) {
modeNum = -1;
break;
}
if ( devmode.dmPelsWidth >= glConfig.vidWidth
&& devmode.dmPelsHeight >= glConfig.vidHeight
&& devmode.dmBitsPerPel >= 15 ) {
break;
}
}
if ( modeNum != -1 && ( cdsRet = ChangeDisplaySettings( &devmode, CDS_FULLSCREEN ) ) == DISP_CHANGE_SUCCESSFUL )
{
ri.Printf( PRINT_ALL, " ok\n" );
if ( !GLW_CreateWindow( drivername, glConfig.vidWidth, glConfig.vidHeight, colorbits, qtrue) )
{
ri.Printf( PRINT_ALL, "...restoring display settings\n" );
ChangeDisplaySettings( 0, 0 );
return RSERR_INVALID_MODE;
}
glw_state.cdsFullscreen = qtrue;
}
else
{
ri.Printf( PRINT_ALL, " failed, " );
PrintCDSError( cdsRet );
ri.Printf( PRINT_ALL, "...restoring display settings\n" );
ChangeDisplaySettings( 0, 0 );
glw_state.cdsFullscreen = qfalse;
glConfig.isFullscreen = qfalse;
if ( !GLW_CreateWindow( drivername, glConfig.vidWidth, glConfig.vidHeight, colorbits, qfalse) )
{
return RSERR_INVALID_MODE;
}
return RSERR_INVALID_FULLSCREEN;
}
}
}
}
else
{
if ( glw_state.cdsFullscreen )
{
ChangeDisplaySettings( 0, 0 );
}
glw_state.cdsFullscreen = qfalse;
if ( !GLW_CreateWindow( drivername, glConfig.vidWidth, glConfig.vidHeight, colorbits, qfalse ) )
{
return RSERR_INVALID_MODE;
}
}
//
// success, now check display frequency, although this won't be valid on Voodoo(2)
//
memset( &dm, 0, sizeof( dm ) );
dm.dmSize = sizeof( dm );
if ( EnumDisplaySettings( NULL, ENUM_CURRENT_SETTINGS, &dm ) )
{
glConfig.displayFrequency = dm.dmDisplayFrequency;
}
// NOTE: this is overridden later on standalone 3Dfx drivers
glConfig.isFullscreen = cdsFullscreen;
return RSERR_OK;
}
/*
** GLW_InitExtensions
*/
static void GLW_InitExtensions( void )
{
if ( !r_allowExtensions->integer )
{
ri.Printf( PRINT_ALL, "*** IGNORING OPENGL EXTENSIONS ***\n" );
return;
}
ri.Printf( PRINT_ALL, "Initializing OpenGL extensions\n" );
// GL_S3_s3tc
glConfig.textureCompression = TC_NONE;
if ( strstr( glConfig.extensions_string, "GL_S3_s3tc" ) )
{
if ( r_ext_compressed_textures->integer )
{
glConfig.textureCompression = TC_S3TC;
ri.Printf( PRINT_ALL, "...using GL_S3_s3tc\n" );
}
else
{
glConfig.textureCompression = TC_NONE;
ri.Printf( PRINT_ALL, "...ignoring GL_S3_s3tc\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...GL_S3_s3tc not found\n" );
}
// GL_EXT_texture_env_add
glConfig.textureEnvAddAvailable = qfalse;
if ( strstr( glConfig.extensions_string, "EXT_texture_env_add" ) )
{
if ( r_ext_texture_env_add->integer )
{
glConfig.textureEnvAddAvailable = qtrue;
ri.Printf( PRINT_ALL, "...using GL_EXT_texture_env_add\n" );
}
else
{
glConfig.textureEnvAddAvailable = qfalse;
ri.Printf( PRINT_ALL, "...ignoring GL_EXT_texture_env_add\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...GL_EXT_texture_env_add not found\n" );
}
// WGL_EXT_swap_control
qwglSwapIntervalEXT = ( BOOL (WINAPI *)(int)) qwglGetProcAddress( "wglSwapIntervalEXT" );
if ( qwglSwapIntervalEXT )
{
ri.Printf( PRINT_ALL, "...using WGL_EXT_swap_control\n" );
r_swapInterval->modified = qtrue; // force a set next frame
}
else
{
ri.Printf( PRINT_ALL, "...WGL_EXT_swap_control not found\n" );
}
// GL_ARB_multitexture
qglMultiTexCoord2fARB = NULL;
qglActiveTextureARB = NULL;
qglClientActiveTextureARB = NULL;
if ( strstr( glConfig.extensions_string, "GL_ARB_multitexture" ) )
{
if ( r_ext_multitexture->integer )
{
qglMultiTexCoord2fARB = ( PFNGLMULTITEXCOORD2FARBPROC ) qwglGetProcAddress( "glMultiTexCoord2fARB" );
qglActiveTextureARB = ( PFNGLACTIVETEXTUREARBPROC ) qwglGetProcAddress( "glActiveTextureARB" );
qglClientActiveTextureARB = ( PFNGLCLIENTACTIVETEXTUREARBPROC ) qwglGetProcAddress( "glClientActiveTextureARB" );
if ( qglActiveTextureARB )
{
qglGetIntegerv( GL_MAX_ACTIVE_TEXTURES_ARB, &glConfig.maxActiveTextures );
if ( glConfig.maxActiveTextures > 1 )
{
ri.Printf( PRINT_ALL, "...using GL_ARB_multitexture\n" );
}
else
{
qglMultiTexCoord2fARB = NULL;
qglActiveTextureARB = NULL;
qglClientActiveTextureARB = NULL;
ri.Printf( PRINT_ALL, "...not using GL_ARB_multitexture, < 2 texture units\n" );
}
}
}
else
{
ri.Printf( PRINT_ALL, "...ignoring GL_ARB_multitexture\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...GL_ARB_multitexture not found\n" );
}
// GL_EXT_compiled_vertex_array
qglLockArraysEXT = NULL;
qglUnlockArraysEXT = NULL;
if ( strstr( glConfig.extensions_string, "GL_EXT_compiled_vertex_array" ) && ( glConfig.hardwareType != GLHW_RIVA128 ) )
{
if ( r_ext_compiled_vertex_array->integer )
{
ri.Printf( PRINT_ALL, "...using GL_EXT_compiled_vertex_array\n" );
qglLockArraysEXT = ( void ( APIENTRY * )( int, int ) ) qwglGetProcAddress( "glLockArraysEXT" );
qglUnlockArraysEXT = ( void ( APIENTRY * )( void ) ) qwglGetProcAddress( "glUnlockArraysEXT" );
if (!qglLockArraysEXT || !qglUnlockArraysEXT) {
ri.Error (ERR_FATAL, "bad getprocaddress");
}
}
else
{
ri.Printf( PRINT_ALL, "...ignoring GL_EXT_compiled_vertex_array\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...GL_EXT_compiled_vertex_array not found\n" );
}
// WGL_3DFX_gamma_control
qwglGetDeviceGammaRamp3DFX = NULL;
qwglSetDeviceGammaRamp3DFX = NULL;
if ( strstr( glConfig.extensions_string, "WGL_3DFX_gamma_control" ) )
{
if ( !r_ignorehwgamma->integer && r_ext_gamma_control->integer )
{
qwglGetDeviceGammaRamp3DFX = ( BOOL ( WINAPI * )( HDC, LPVOID ) ) qwglGetProcAddress( "wglGetDeviceGammaRamp3DFX" );
qwglSetDeviceGammaRamp3DFX = ( BOOL ( WINAPI * )( HDC, LPVOID ) ) qwglGetProcAddress( "wglSetDeviceGammaRamp3DFX" );
if ( qwglGetDeviceGammaRamp3DFX && qwglSetDeviceGammaRamp3DFX )
{
ri.Printf( PRINT_ALL, "...using WGL_3DFX_gamma_control\n" );
}
else
{
qwglGetDeviceGammaRamp3DFX = NULL;
qwglSetDeviceGammaRamp3DFX = NULL;
}
}
else
{
ri.Printf( PRINT_ALL, "...ignoring WGL_3DFX_gamma_control\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...WGL_3DFX_gamma_control not found\n" );
}
textureFilterAnisotropic = qfalse;
if ( strstr( glConfig.extensions_string, "GL_EXT_texture_filter_anisotropic" ) )
{
if ( r_ext_texture_filter_anisotropic->integer ) {
qglGetIntegerv( GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &maxAnisotropy );
if ( maxAnisotropy <= 0 ) {
ri.Printf( PRINT_ALL, "...GL_EXT_texture_filter_anisotropic not properly supported!\n" );
maxAnisotropy = 0;
}
else
{
ri.Printf( PRINT_ALL, "...using GL_EXT_texture_filter_anisotropic (max: %i)\n", maxAnisotropy );
textureFilterAnisotropic = qtrue;
}
}
else
{
ri.Printf( PRINT_ALL, "...ignoring GL_EXT_texture_filter_anisotropic\n" );
}
}
else
{
ri.Printf( PRINT_ALL, "...GL_EXT_texture_filter_anisotropic not found\n" );
}
}
/*
** GLW_CheckOSVersion
*/
static qboolean GLW_CheckOSVersion( void )
{
#define OSR2_BUILD_NUMBER 1111
OSVERSIONINFO vinfo;
vinfo.dwOSVersionInfoSize = sizeof(vinfo);
glw_state.allowdisplaydepthchange = qfalse;
if ( GetVersionEx( &vinfo) )
{
if ( vinfo.dwMajorVersion > 4 )
{
glw_state.allowdisplaydepthchange = qtrue;
}
else if ( vinfo.dwMajorVersion == 4 )
{
if ( vinfo.dwPlatformId == VER_PLATFORM_WIN32_NT )
{
glw_state.allowdisplaydepthchange = qtrue;
}
else if ( vinfo.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS )
{
if ( LOWORD( vinfo.dwBuildNumber ) >= OSR2_BUILD_NUMBER )
{
glw_state.allowdisplaydepthchange = qtrue;
}
}
}
}
else
{
ri.Printf( PRINT_ALL, "GLW_CheckOSVersion() - GetVersionEx failed\n" );
return qfalse;
}
return qtrue;
}
/*
** GLW_LoadOpenGL
**
** GLimp_win.c internal function that attempts to load and use
** a specific OpenGL DLL.
*/
static qboolean GLW_LoadOpenGL( const char *drivername )
{
char buffer[1024];
qboolean cdsFullscreen;
Q_strncpyz( buffer, drivername, sizeof(buffer) );
Q_strlwr(buffer);
//
// determine if we're on a standalone driver
//
if ( strstr( buffer, "opengl32" ) != 0 || r_maskMinidriver->integer )
{
glConfig.driverType = GLDRV_ICD;
}
else
{
glConfig.driverType = GLDRV_STANDALONE;
ri.Printf( PRINT_ALL, "...assuming '%s' is a standalone driver\n", drivername );
if ( strstr( buffer, _3DFX_DRIVER_NAME ) )
{
glConfig.driverType = GLDRV_VOODOO;
}
}
// disable the 3Dfx splash screen
_putenv("FX_GLIDE_NO_SPLASH=0");
//
// load the driver and bind our function pointers to it
//
if ( QGL_Init( buffer ) )
{
cdsFullscreen = r_fullscreen->integer;
// create the window and set up the context
if ( !GLW_StartDriverAndSetMode( drivername, r_mode->integer, r_colorbits->integer, cdsFullscreen ) )
{
// if we're on a 24/32-bit desktop and we're going fullscreen on an ICD,
// try it again but with a 16-bit desktop
if ( glConfig.driverType == GLDRV_ICD )
{
if ( r_colorbits->integer != 16 ||
cdsFullscreen != qtrue ||
r_mode->integer != 3 )
{
if ( !GLW_StartDriverAndSetMode( drivername, 3, 16, qtrue ) )
{
goto fail;
}
}
}
else
{
goto fail;
}
}
if ( glConfig.driverType == GLDRV_VOODOO )
{
glConfig.isFullscreen = qtrue;
}
return qtrue;
}
fail:
QGL_Shutdown();
return qfalse;
}
/*
** GLimp_EndFrame
*/
void GLimp_EndFrame (void)
{
//
// swapinterval stuff
//
if ( r_swapInterval->modified ) {
r_swapInterval->modified = qfalse;
if ( !glConfig.stereoEnabled ) { // why?
if ( qwglSwapIntervalEXT ) {
qwglSwapIntervalEXT( r_swapInterval->integer );
}
}
}
// don't flip if drawing to front buffer
if ( Q_stricmp( r_drawBuffer->string, "GL_FRONT" ) != 0 )
{
if ( glConfig.driverType > GLDRV_ICD )
{
if ( !qwglSwapBuffers( glw_state.hDC ) )
{
ri.Error( ERR_FATAL, "GLimp_EndFrame() - SwapBuffers() failed!\n" );
}
}
else
{
SwapBuffers( glw_state.hDC );
}
}
// check logging
QGL_EnableLogging( r_logFile->integer );
}
static void GLW_StartOpenGL( void )
{
qboolean attemptedOpenGL32 = qfalse;
qboolean attempted3Dfx = qfalse;
//
// load and initialize the specific OpenGL driver
//
if ( !GLW_LoadOpenGL( r_glDriver->string ) )
{
if ( !Q_stricmp( r_glDriver->string, OPENGL_DRIVER_NAME ) )
{
attemptedOpenGL32 = qtrue;
}
else if ( !Q_stricmp( r_glDriver->string, _3DFX_DRIVER_NAME ) )
{
attempted3Dfx = qtrue;
}
if ( !attempted3Dfx )
{
attempted3Dfx = qtrue;
if ( GLW_LoadOpenGL( _3DFX_DRIVER_NAME ) )
{
ri.Cvar_Set( "r_glDriver", _3DFX_DRIVER_NAME );
r_glDriver->modified = qfalse;
}
else
{
if ( !attemptedOpenGL32 )
{
if ( !GLW_LoadOpenGL( OPENGL_DRIVER_NAME ) )
{
ri.Error( ERR_FATAL, "GLW_StartOpenGL() - could not load OpenGL subsystem\n" );
}
ri.Cvar_Set( "r_glDriver", OPENGL_DRIVER_NAME );
r_glDriver->modified = qfalse;
}
else
{
ri.Error( ERR_FATAL, "GLW_StartOpenGL() - could not load OpenGL subsystem\n" );
}
}
}
else if ( !attemptedOpenGL32 )
{
attemptedOpenGL32 = qtrue;
if ( GLW_LoadOpenGL( OPENGL_DRIVER_NAME ) )
{
ri.Cvar_Set( "r_glDriver", OPENGL_DRIVER_NAME );
r_glDriver->modified = qfalse;
}
else
{
ri.Error( ERR_FATAL, "GLW_StartOpenGL() - could not load OpenGL subsystem\n" );
}
}
}
}
/*
** GLimp_Init
**
** This is the platform specific OpenGL initialization function. It
** is responsible for loading OpenGL, initializing it, setting
** extensions, creating a window of the appropriate size, doing
** fullscreen manipulations, etc. Its overall responsibility is
** to make sure that a functional OpenGL subsystem is operating
** when it returns to the ref.
*/
void GLimp_Init( void )
{
char buf[1024];
cvar_t *lastValidRenderer = ri.Cvar_Get( "r_lastValidRenderer", "(uninitialized)", CVAR_ARCHIVE );
cvar_t *cv;
ri.Printf( PRINT_ALL, "Initializing OpenGL subsystem\n" );
//
// check OS version to see if we can do fullscreen display changes
//
if ( !GLW_CheckOSVersion() )
{
ri.Error( ERR_FATAL, "GLimp_Init() - incorrect operating system\n" );
}
// save off hInstance and wndproc
cv = ri.Cvar_Get( "win_hinstance", "", 0 );
sscanf( cv->string, "%i", (int *)&g_wv.hInstance );
cv = ri.Cvar_Get( "win_wndproc", "", 0 );
sscanf( cv->string, "%i", (int *)&glw_state.wndproc );
r_allowSoftwareGL = ri.Cvar_Get( "r_allowSoftwareGL", "0", CVAR_LATCH );
r_maskMinidriver = ri.Cvar_Get( "r_maskMinidriver", "0", CVAR_LATCH );
// load appropriate DLL and initialize subsystem
GLW_StartOpenGL();
// get our config strings
Q_strncpyz( glConfig.vendor_string, qglGetString (GL_VENDOR), sizeof( glConfig.vendor_string ) );
Q_strncpyz( glConfig.renderer_string, qglGetString (GL_RENDERER), sizeof( glConfig.renderer_string ) );
Q_strncpyz( glConfig.version_string, qglGetString (GL_VERSION), sizeof( glConfig.version_string ) );
Q_strncpyz( glConfig.extensions_string, qglGetString (GL_EXTENSIONS), sizeof( glConfig.extensions_string ) );
//
// chipset specific configuration
//
Q_strncpyz( buf, glConfig.renderer_string, sizeof(buf) );
Q_strlwr( buf );
//
// NOTE: if changing cvars, do it within this block. This allows them
// to be overridden when testing driver fixes, etc. but only sets
// them to their default state when the hardware is first installed/run.
//
if ( Q_stricmp( lastValidRenderer->string, glConfig.renderer_string ) )
{
glConfig.hardwareType = GLHW_GENERIC;
ri.Cvar_Set( "r_textureMode", "GL_LINEAR_MIPMAP_NEAREST" );
// VOODOO GRAPHICS w/ 2MB
if ( strstr( buf, "voodoo graphics/1 tmu/2 mb" ) )
{
ri.Cvar_Set( "r_picmip", "2" );
ri.Cvar_Get( "r_picmip", "1", CVAR_ARCHIVE | CVAR_LATCH );
}
else
{
ri.Cvar_Set( "r_picmip", "1" );
if ( strstr( buf, "rage 128" ) || strstr( buf, "rage128" ) )
{
ri.Cvar_Set( "r_finish", "0" );
}
// Savage3D and Savage4 should always have trilinear enabled
else if ( strstr( buf, "savage3d" ) || strstr( buf, "s3 savage4" ) )
{
ri.Cvar_Set( "r_texturemode", "GL_LINEAR_MIPMAP_LINEAR" );
}
}
}
//
// this is where hardware specific workarounds that should be
// detected/initialized every startup should go.
//
if ( strstr( buf, "banshee" ) || strstr( buf, "voodoo3" ) )
{
glConfig.hardwareType = GLHW_3DFX_2D3D;
}
// VOODOO GRAPHICS w/ 2MB
else if ( strstr( buf, "voodoo graphics/1 tmu/2 mb" ) )
{
}
else if ( strstr( buf, "glzicd" ) )
{
}
else if ( strstr( buf, "rage pro" ) || strstr( buf, "Rage Pro" ) || strstr( buf, "ragepro" ) )
{
glConfig.hardwareType = GLHW_RAGEPRO;
}
else if ( strstr( buf, "rage 128" ) )
{
}
else if ( strstr( buf, "permedia2" ) )
{
glConfig.hardwareType = GLHW_PERMEDIA2;
}
else if ( strstr( buf, "riva 128" ) )
{
glConfig.hardwareType = GLHW_RIVA128;
}
else if ( strstr( buf, "riva tnt " ) )
{
}
ri.Cvar_Set( "r_lastValidRenderer", glConfig.renderer_string );
GLW_InitExtensions();
WG_CheckHardwareGamma();
}
/*
** GLimp_Shutdown
**
** This routine does all OS specific shutdown procedures for the OpenGL
** subsystem.
*/
void GLimp_Shutdown( void )
{
// const char *strings[] = { "soft", "hard" };
const char *success[] = { "failed", "success" };
int retVal;
// FIXME: Brian, we need better fallbacks from partially initialized failures
if ( !qwglMakeCurrent ) {
return;
}
ri.Printf( PRINT_ALL, "Shutting down OpenGL subsystem\n" );
// restore gamma. We do this first because 3Dfx's extension needs a valid OGL subsystem
WG_RestoreGamma();
// set current context to NULL
if ( qwglMakeCurrent )
{
retVal = qwglMakeCurrent( NULL, NULL ) != 0;
ri.Printf( PRINT_ALL, "...wglMakeCurrent( NULL, NULL ): %s\n", success[retVal] );
}
// delete HGLRC
if ( glw_state.hGLRC )
{
retVal = qwglDeleteContext( glw_state.hGLRC ) != 0;
ri.Printf( PRINT_ALL, "...deleting GL context: %s\n", success[retVal] );
glw_state.hGLRC = NULL;
}
// release DC
if ( glw_state.hDC )
{
retVal = ReleaseDC( g_wv.hWnd, glw_state.hDC ) != 0;
ri.Printf( PRINT_ALL, "...releasing DC: %s\n", success[retVal] );
glw_state.hDC = NULL;
}
// destroy window
if ( g_wv.hWnd )
{
ri.Printf( PRINT_ALL, "...destroying window\n" );
ShowWindow( g_wv.hWnd, SW_HIDE );
DestroyWindow( g_wv.hWnd );
g_wv.hWnd = NULL;
glw_state.pixelFormatSet = qfalse;
}
// close the r_logFile
if ( glw_state.log_fp )
{
fclose( glw_state.log_fp );
glw_state.log_fp = 0;
}
// reset display settings
if ( glw_state.cdsFullscreen )
{
ri.Printf( PRINT_ALL, "...resetting display\n" );
ChangeDisplaySettings( 0, 0 );
glw_state.cdsFullscreen = qfalse;
}
// shutdown QGL subsystem
QGL_Shutdown();
memset( &glConfig, 0, sizeof( glConfig ) );
memset( &glState, 0, sizeof( glState ) );
}
/*
** GLimp_LogComment
*/
void GLimp_LogComment( char *comment )
{
if ( glw_state.log_fp ) {
fprintf( glw_state.log_fp, "%s", comment );
}
}
/*
===========================================================
SMP acceleration
===========================================================
*/
HANDLE renderCommandsEvent;
HANDLE renderCompletedEvent;
HANDLE renderActiveEvent;
void (*glimpRenderThread)( void );
void GLimp_RenderThreadWrapper( void ) {
glimpRenderThread();
// unbind the context before we die
qwglMakeCurrent( glw_state.hDC, NULL );
}
/*
=======================
GLimp_SpawnRenderThread
=======================
*/
HANDLE renderThreadHandle;
int renderThreadId;
qboolean GLimp_SpawnRenderThread( void (*function)( void ) ) {
renderCommandsEvent = CreateEvent( NULL, TRUE, FALSE, NULL );
renderCompletedEvent = CreateEvent( NULL, TRUE, FALSE, NULL );
renderActiveEvent = CreateEvent( NULL, TRUE, FALSE, NULL );
glimpRenderThread = function;
renderThreadHandle = CreateThread(
NULL, // LPSECURITY_ATTRIBUTES lpsa,
0, // DWORD cbStack,
(LPTHREAD_START_ROUTINE)GLimp_RenderThreadWrapper, // LPTHREAD_START_ROUTINE lpStartAddr,
0, // LPVOID lpvThreadParm,
0, // DWORD fdwCreate,
(long *)&renderThreadId );
if ( !renderThreadHandle ) {
return qfalse;
}
return qtrue;
}
static void *smpData;
static int wglErrors;
void *GLimp_RendererSleep( void ) {
void *data;
if ( !qwglMakeCurrent( glw_state.hDC, NULL ) ) {
wglErrors++;
}
// after this, the front end can exit GLimp_FrontEndSleep
SetEvent( renderCompletedEvent );
WaitForSingleObject( renderCommandsEvent, INFINITE );
ResetEvent( renderActiveEvent );
if ( !qwglMakeCurrent( glw_state.hDC, glw_state.hGLRC ) ) {
wglErrors++;
}
ResetEvent( renderCompletedEvent );
ResetEvent( renderCommandsEvent );
data = smpData;
// after this, the main thread can exit GLimp_WakeRenderer
SetEvent( renderActiveEvent );
return data;
}
void GLimp_FrontEndSleep( void ) {
WaitForSingleObject( renderCompletedEvent, INFINITE );
if ( !qwglMakeCurrent( glw_state.hDC, glw_state.hGLRC ) ) {
wglErrors++;
}
}
void GLimp_WakeRenderer( void *data ) {
smpData = data;
if ( !qwglMakeCurrent( glw_state.hDC, NULL ) ) {
wglErrors++;
}
// after this, the renderer can continue through GLimp_RendererSleep
SetEvent( renderCommandsEvent );
WaitForSingleObject( renderActiveEvent, INFINITE );
}
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