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Diffstat (limited to 'src/win32/win_glimp.c')
| -rw-r--r-- | src/win32/win_glimp.c | 1658 |
1 files changed, 1658 insertions, 0 deletions
diff --git a/src/win32/win_glimp.c b/src/win32/win_glimp.c new file mode 100644 index 00000000..b6c602aa --- /dev/null +++ b/src/win32/win_glimp.c @@ -0,0 +1,1658 @@ +/* +=========================================================================== +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 + +#define WINDOW_CLASS_NAME "Quake 3: Arena" + +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 = WINDOW_CLASS_NAME; + + 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, + WINDOW_CLASS_NAME, + "Quake 3: Arena", + 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" ); + } +} + +/* +** 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++; + } + + ResetEvent( renderActiveEvent ); + + // after this, the front end can exit GLimp_FrontEndSleep + SetEvent( renderCompletedEvent ); + + WaitForSingleObject( renderCommandsEvent, INFINITE ); + + 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 ); +} + |