-/*\r
- * freeglut_gamemode.c\r
- *\r
- * The game mode handling code.\r
- *\r
- * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.\r
- * Written by Pawel W. Olszta, <olszta@sourceforge.net>\r
- * Creation date: Thu Dec 16 1999\r
- *\r
- * Permission is hereby granted, free of charge, to any person obtaining a\r
- * copy of this software and associated documentation files (the "Software"),\r
- * to deal in the Software without restriction, including without limitation\r
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,\r
- * and/or sell copies of the Software, and to permit persons to whom the\r
- * Software is furnished to do so, subject to the following conditions:\r
- *\r
- * The above copyright notice and this permission notice shall be included\r
- * in all copies or substantial portions of the Software.\r
- *\r
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS\r
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r
- * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
- * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
- */\r
-\r
-#include <GL/freeglut.h>\r
-#include "freeglut_internal.h"\r
-\r
-/*\r
- * TODO BEFORE THE STABLE RELEASE:\r
- *\r
- * glutGameModeString() -- missing\r
- * glutEnterGameMode() -- X11 version\r
- * glutLeaveGameMode() -- is that correct?\r
- * glutGameModeGet() -- is that correct?\r
- */\r
-\r
-\r
-/* -- PRIVATE FUNCTIONS ---------------------------------------------------- */\r
-\r
-#if TARGET_HOST_POSIX_X11\r
-static int xrandr_resize(int xsz, int ysz, int rate, int just_checking)\r
-{\r
-#ifdef HAVE_X11_EXTENSIONS_XRANDR_H\r
- int event_base, error_base, ver_major, ver_minor, use_rate;\r
- XRRScreenConfiguration *xrr_config = 0;\r
- Status result = -1;\r
-\r
- /* must check at runtime for the availability of the extension */\r
- if(!XRRQueryExtension(fgDisplay.Display, &event_base, &error_base)) {\r
- return -1;\r
- }\r
-\r
- XRRQueryVersion(fgDisplay.Display, &ver_major, &ver_minor);\r
-\r
- /* we only heed the rate if we CAN actually use it (Xrandr >= 1.1) and\r
- * the user actually cares about it (rate > 0)\r
- */\r
- use_rate = ( rate > 0 ) && ( ( ver_major >= 1 ) ||\r
- ( ( ver_major == 1 ) && ( ver_minor >= 1 ) ) );\r
-\r
- /* this loop is only so that the whole thing will be repeated if someone\r
- * else changes video mode between our query of the current information and\r
- * the attempt to change it.\r
- */\r
- do {\r
- XRRScreenSize *ssizes;\r
- short *rates;\r
- Rotation rot;\r
- int i, ssizes_count, rates_count, curr, res_idx = -1;\r
- Time timestamp, cfg_timestamp;\r
-\r
- if(xrr_config) {\r
- XRRFreeScreenConfigInfo(xrr_config);\r
- }\r
-\r
- if(!(xrr_config = XRRGetScreenInfo(fgDisplay.Display, fgDisplay.RootWindow))) {\r
- fgWarning("XRRGetScreenInfo failed");\r
- break;\r
- }\r
- ssizes = XRRConfigSizes(xrr_config, &ssizes_count);\r
- curr = XRRConfigCurrentConfiguration(xrr_config, &rot);\r
- timestamp = XRRConfigTimes(xrr_config, &cfg_timestamp);\r
-\r
- /* if either of xsz or ysz are unspecified, use the current values */\r
- if(xsz <= 0)\r
- xsz = fgState.GameModeSize.X = ssizes[curr].width;\r
- if(ysz <= 0)\r
- ysz = fgState.GameModeSize.Y = ssizes[curr].height;\r
-\r
-\r
- if(xsz == ssizes[curr].width && ysz == ssizes[curr].height) {\r
- /* no need to switch, we're already in the requested resolution */\r
- res_idx = curr;\r
- } else {\r
- for(i=0; i<ssizes_count; i++) {\r
- if(ssizes[i].width == xsz && ssizes[i].height == ysz) {\r
- res_idx = i;\r
- break; /* found it */\r
- }\r
- }\r
- }\r
- if(res_idx == -1)\r
- break; /* no matching resolution */\r
-\r
-#if ( RANDR_MAJOR >= 1 ) || ( ( RANDR_MAJOR == 1 ) && ( RANDR_MINOR >= 1 ) )\r
- if(use_rate) {\r
- rate = fgState.GameModeRefresh;\r
-\r
- /* for the selected resolution, let's find out if there is\r
- * a matching refresh rate available.\r
- */\r
- rates = XRRConfigRates(xrr_config, res_idx, &rates_count);\r
-\r
- for(i=0; i<rates_count; i++) {\r
- if(rates[i] == rate) {\r
- break;\r
- }\r
- }\r
- if(i == rates_count) {\r
- break; /* no matching rate */\r
- }\r
- }\r
-#endif\r
-\r
- if(just_checking) {\r
- result = 0;\r
- break;\r
- }\r
-\r
-#if ( RANDR_MAJOR >= 1 ) || ( ( RANDR_MAJOR == 1 ) && ( RANDR_MINOR >= 1 ) )\r
- if(use_rate)\r
- result = XRRSetScreenConfigAndRate(fgDisplay.Display, xrr_config,\r
- fgDisplay.RootWindow, res_idx, rot, rate, timestamp);\r
- else\r
-#endif\r
- result = XRRSetScreenConfig(fgDisplay.Display, xrr_config,\r
- fgDisplay.RootWindow, res_idx, rot, timestamp);\r
-\r
- } while(result == RRSetConfigInvalidTime);\r
-\r
- if(xrr_config) {\r
- XRRFreeScreenConfigInfo(xrr_config);\r
- }\r
-\r
- if(result == 0) {\r
- return 0;\r
- }\r
-\r
-#endif /* HAVE_X11_EXTENSIONS_XRANDR_H */\r
- return -1;\r
-}\r
-#endif /* TARGET_HOST_POSIX_X11 */\r
-\r
-/*\r
- * Remembers the current visual settings, so that\r
- * we can change them and restore later...\r
- */\r
-static void fghRememberState( void )\r
-{\r
-#if TARGET_HOST_POSIX_X11\r
- int event_base, error_base;\r
-\r
- /*\r
- * Remember the current pointer location before going fullscreen\r
- * for restoring it later:\r
- */\r
- Window junk_window;\r
- unsigned int junk_mask;\r
-\r
- XQueryPointer(fgDisplay.Display, fgDisplay.RootWindow,\r
- &junk_window, &junk_window,\r
- &fgDisplay.DisplayPointerX, &fgDisplay.DisplayPointerY,\r
- &fgDisplay.DisplayPointerX, &fgDisplay.DisplayPointerY, &junk_mask);\r
-\r
-# ifdef HAVE_X11_EXTENSIONS_XRANDR_H\r
- if(XRRQueryExtension(fgDisplay.Display, &event_base, &error_base)) {\r
- XRRScreenConfiguration *xrr_config;\r
- XRRScreenSize *ssizes;\r
- Rotation rot;\r
- int ssize_count, curr;\r
-\r
- if((xrr_config = XRRGetScreenInfo(fgDisplay.Display, fgDisplay.RootWindow))) {\r
- ssizes = XRRConfigSizes(xrr_config, &ssize_count);\r
- curr = XRRConfigCurrentConfiguration(xrr_config, &rot);\r
-\r
- fgDisplay.prev_xsz = ssizes[curr].width;\r
- fgDisplay.prev_ysz = ssizes[curr].height;\r
- fgDisplay.prev_refresh = -1;\r
-\r
-# if ( RANDR_MAJOR >= 1 ) || ( ( RANDR_MAJOR == 1 ) && ( RANDR_MINOR >= 1 ) )\r
- if(fgState.GameModeRefresh != -1) {\r
- fgDisplay.prev_refresh = XRRConfigCurrentRate(xrr_config);\r
- }\r
-# endif\r
-\r
- fgDisplay.prev_size_valid = 1;\r
-\r
- XRRFreeScreenConfigInfo(xrr_config);\r
- }\r
- }\r
-# endif\r
-\r
- /*\r
- * This highly depends on the XFree86 extensions,\r
- * not approved as X Consortium standards\r
- */\r
-# ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H\r
- if(!XF86VidModeQueryExtension(fgDisplay.Display, &event_base, &error_base)) {\r
- return;\r
- }\r
-\r
- /*\r
- * Remember the current ViewPort location of the screen to be able to\r
- * restore the ViewPort on LeaveGameMode():\r
- */\r
- if( !XF86VidModeGetViewPort(\r
- fgDisplay.Display,\r
- fgDisplay.Screen,\r
- &fgDisplay.DisplayViewPortX,\r
- &fgDisplay.DisplayViewPortY ) )\r
- fgWarning( "XF86VidModeGetViewPort failed" );\r
-\r
-\r
- /* Query the current display settings: */\r
- fgDisplay.DisplayModeValid =\r
- XF86VidModeGetModeLine(\r
- fgDisplay.Display,\r
- fgDisplay.Screen,\r
- &fgDisplay.DisplayModeClock,\r
- &fgDisplay.DisplayMode\r
- );\r
-\r
- if( !fgDisplay.DisplayModeValid )\r
- fgWarning( "XF86VidModeGetModeLine failed" );\r
-# endif\r
-\r
-#elif TARGET_HOST_MS_WINDOWS\r
-\r
-/* DEVMODE devMode; */\r
-\r
- /* Grab the current desktop settings... */\r
-\r
-/* hack to get around my stupid cross-gcc headers */\r
-#define FREEGLUT_ENUM_CURRENT_SETTINGS -1\r
-\r
- EnumDisplaySettings( fgDisplay.DisplayName, FREEGLUT_ENUM_CURRENT_SETTINGS,\r
- &fgDisplay.DisplayMode );\r
-\r
- /* Make sure we will be restoring all settings needed */\r
- fgDisplay.DisplayMode.dmFields |=\r
- DM_PELSWIDTH | DM_PELSHEIGHT | DM_BITSPERPEL | DM_DISPLAYFREQUENCY;\r
-\r
-#endif\r
-}\r
-\r
-/*\r
- * Restores the previously remembered visual settings\r
- */\r
-static void fghRestoreState( void )\r
-{\r
-#if TARGET_HOST_POSIX_X11\r
- /* Restore the remembered pointer position: */\r
- XWarpPointer(\r
- fgDisplay.Display, None, fgDisplay.RootWindow, 0, 0, 0, 0,\r
- fgDisplay.DisplayPointerX, fgDisplay.DisplayPointerY\r
- );\r
-\r
-\r
-# ifdef HAVE_X11_EXTENSIONS_XRANDR_H\r
- if(fgDisplay.prev_size_valid) {\r
- if(xrandr_resize(fgDisplay.prev_xsz, fgDisplay.prev_ysz, fgDisplay.prev_refresh, 0) != -1) {\r
- fgDisplay.prev_size_valid = 0;\r
-# ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H\r
- fgDisplay.DisplayModeValid = 0;\r
-# endif\r
- return;\r
- }\r
- }\r
-# endif\r
-\r
-\r
-\r
-# ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H\r
- /*\r
- * This highly depends on the XFree86 extensions,\r
- * not approved as X Consortium standards\r
- */\r
-\r
- if( fgDisplay.DisplayModeValid )\r
- {\r
- XF86VidModeModeInfo** displayModes;\r
- int i, displayModesCount;\r
-\r
- if( !XF86VidModeGetAllModeLines(\r
- fgDisplay.Display,\r
- fgDisplay.Screen,\r
- &displayModesCount,\r
- &displayModes ) )\r
- {\r
- fgWarning( "XF86VidModeGetAllModeLines failed" );\r
- return;\r
- }\r
-\r
-\r
- /*\r
- * Check every of the modes looking for one that matches our demands.\r
- * If we find one, switch to it and restore the remembered viewport.\r
- */\r
- for( i = 0; i < displayModesCount; i++ )\r
- {\r
- if(displayModes[ i ]->hdisplay == fgDisplay.DisplayMode.hdisplay &&\r
- displayModes[ i ]->vdisplay == fgDisplay.DisplayMode.vdisplay &&\r
- displayModes[ i ]->dotclock == fgDisplay.DisplayModeClock )\r
- {\r
- if( !XF86VidModeSwitchToMode(\r
- fgDisplay.Display,\r
- fgDisplay.Screen,\r
- displayModes[ i ] ) )\r
- {\r
- fgWarning( "XF86VidModeSwitchToMode failed" );\r
- break;\r
- }\r
-\r
- if( !XF86VidModeSetViewPort(\r
- fgDisplay.Display,\r
- fgDisplay.Screen,\r
- fgDisplay.DisplayViewPortX,\r
- fgDisplay.DisplayViewPortY ) )\r
- fgWarning( "XF86VidModeSetViewPort failed" );\r
-\r
-\r
- /*\r
- * For the case this would be the last X11 call the application\r
- * calls exit() we've to flush the X11 output queue to have the\r
- * commands sent to the X server before the application exits.\r
- */\r
- XFlush( fgDisplay.Display );\r
-\r
- fgDisplay.DisplayModeValid = 0;\r
-# ifdef HAVE_X11_EXTENSIONS_XRANDR_H\r
- fgDisplay.prev_size_valid = 0;\r
-# endif\r
-\r
- break;\r
- }\r
- }\r
- XFree( displayModes );\r
- }\r
-\r
-# endif\r
-\r
-#elif TARGET_HOST_MS_WINDOWS\r
-\r
- /* Restore the previously remembered desktop display settings */\r
- ChangeDisplaySettingsEx( fgDisplay.DisplayName,&fgDisplay.DisplayMode, 0,0,0 );\r
-\r
-#endif\r
-}\r
-\r
-#if TARGET_HOST_POSIX_X11\r
-#ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H\r
-\r
-/*\r
- * Checks a single display mode settings against user's preferences.\r
- */\r
-static GLboolean fghCheckDisplayMode( int width, int height, int depth, int refresh )\r
-{\r
- /* The desired values should be stored in fgState structure... */\r
- return ( width == fgState.GameModeSize.X ) &&\r
- ( height == fgState.GameModeSize.Y ) &&\r
- ( depth == fgState.GameModeDepth ) &&\r
- ( refresh == fgState.GameModeRefresh );\r
-}\r
-\r
-/*\r
- * Checks all display modes settings against user's preferences.\r
- * Returns the mode number found or -1 if none could be found.\r
- */\r
-static int fghCheckDisplayModes( GLboolean exactMatch, int displayModesCount, XF86VidModeModeInfo** displayModes )\r
-{\r
- int i;\r
- for( i = 0; i < displayModesCount; i++ )\r
- {\r
- /* Compute the displays refresh rate, dotclock comes in kHz. */\r
- int refresh = ( displayModes[ i ]->dotclock * 1000 ) /\r
- ( displayModes[ i ]->htotal * displayModes[ i ]->vtotal );\r
-\r
- if( fghCheckDisplayMode( displayModes[ i ]->hdisplay,\r
- displayModes[ i ]->vdisplay,\r
- fgState.GameModeDepth,\r
- ( exactMatch ? refresh : fgState.GameModeRefresh ) ) ) {\r
- if (!exactMatch)\r
- {\r
- /* Update the chosen refresh rate, otherwise a\r
- * glutGameModeGet(GLUT_GAME_MODE_REFRESH_RATE) would not\r
- * return the right values\r
- */\r
- fgState.GameModeRefresh = refresh;\r
- }\r
-\r
- return i;\r
- }\r
- }\r
- return -1;\r
-}\r
-\r
-#endif\r
-#endif\r
-\r
-/*\r
- * Changes the current display mode to match user's settings\r
- */\r
-static GLboolean fghChangeDisplayMode( GLboolean haveToTest )\r
-{\r
- GLboolean success = GL_FALSE;\r
-#if TARGET_HOST_POSIX_X11\r
-\r
- /* first try to use XRandR, then fallback to XF86VidMode */\r
-# ifdef HAVE_X11_EXTENSIONS_XRANDR_H\r
- if(xrandr_resize(fgState.GameModeSize.X, fgState.GameModeSize.Y,\r
- fgState.GameModeRefresh, haveToTest) != -1) {\r
- return GL_TRUE;\r
- }\r
-# endif\r
-\r
-\r
- /*\r
- * This highly depends on the XFree86 extensions,\r
- * not approved as X Consortium standards\r
- */\r
-# ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H\r
-\r
- /*\r
- * This is also used by applications which check modes by calling\r
- * glutGameModeGet(GLUT_GAME_MODE_POSSIBLE), so allow the check:\r
- */\r
- if( haveToTest || fgDisplay.DisplayModeValid )\r
- {\r
- XF86VidModeModeInfo** displayModes;\r
- int i, displayModesCount;\r
-\r
- /* If we don't have a valid modeline in the display structure, which\r
- * can happen if this is called from glutGameModeGet instead of\r
- * glutEnterGameMode, then we need to query the current mode, to make\r
- * unspecified settings to default to their current values.\r
- */\r
- if(!fgDisplay.DisplayModeValid) {\r
- if(!XF86VidModeGetModeLine(fgDisplay.Display, fgDisplay.Screen,\r
- &fgDisplay.DisplayModeClock, &fgDisplay.DisplayMode)) {\r
- return success;\r
- }\r
- }\r
-\r
- if (fgState.GameModeSize.X == -1)\r
- {\r
- fgState.GameModeSize.X = fgDisplay.DisplayMode.hdisplay;\r
- }\r
- if (fgState.GameModeSize.Y == -1)\r
- {\r
- fgState.GameModeSize.Y = fgDisplay.DisplayMode.vdisplay;\r
- }\r
- if (fgState.GameModeDepth == -1)\r
- {\r
- /* can't get color depth from this, nor can we change it, do nothing\r
- * TODO: get with XGetVisualInfo()? but then how to set?\r
- */\r
- }\r
- if (fgState.GameModeRefresh == -1)\r
- {\r
- /* Compute the displays refresh rate, dotclock comes in kHz. */\r
- int refresh = ( fgDisplay.DisplayModeClock * 1000 ) /\r
- ( fgDisplay.DisplayMode.htotal * fgDisplay.DisplayMode.vtotal );\r
-\r
- fgState.GameModeRefresh = refresh;\r
- }\r
-\r
- /* query all possible display modes */\r
- if( !XF86VidModeGetAllModeLines(\r
- fgDisplay.Display,\r
- fgDisplay.Screen,\r
- &displayModesCount,\r
- &displayModes ) )\r
- {\r
- fgWarning( "XF86VidModeGetAllModeLines failed" );\r
- return success;\r
- }\r
-\r
-\r
- /*\r
- * Check every of the modes looking for one that matches our demands,\r
- * ignoring the refresh rate if no exact match could be found.\r
- */\r
- i = fghCheckDisplayModes( GL_TRUE, displayModesCount, displayModes );\r
- if( i < 0 ) {\r
- i = fghCheckDisplayModes( GL_FALSE, displayModesCount, displayModes );\r
- }\r
- success = ( i < 0 ) ? GL_FALSE : GL_TRUE;\r
-\r
- if( !haveToTest && success ) {\r
- if( !XF86VidModeSwitchToMode(\r
- fgDisplay.Display,\r
- fgDisplay.Screen,\r
- displayModes[ i ] ) )\r
- fgWarning( "XF86VidModeSwitchToMode failed" );\r
- }\r
-\r
- XFree( displayModes );\r
- }\r
-\r
-# endif\r
-\r
-\r
-#elif TARGET_HOST_MS_WINDOWS\r
-\r
- DEVMODE devMode;\r
- char *fggmstr = NULL;\r
- char displayMode[300];\r
-\r
- success = GL_FALSE;\r
-\r
- EnumDisplaySettings( fgDisplay.DisplayName, -1, &devMode ); \r
- devMode.dmFields = 0;\r
-\r
- if (fgState.GameModeSize.X!=-1)\r
- {\r
- devMode.dmPelsWidth = fgState.GameModeSize.X;\r
- devMode.dmFields |= DM_PELSWIDTH;\r
- }\r
- if (fgState.GameModeSize.Y!=-1)\r
- {\r
- devMode.dmPelsHeight = fgState.GameModeSize.Y;\r
- devMode.dmFields |= DM_PELSHEIGHT;\r
- }\r
- if (fgState.GameModeDepth!=-1)\r
- {\r
- devMode.dmBitsPerPel = fgState.GameModeDepth;\r
- devMode.dmFields |= DM_BITSPERPEL;\r
- }\r
- if (fgState.GameModeRefresh!=-1)\r
- {\r
- devMode.dmDisplayFrequency = fgState.GameModeRefresh;\r
- devMode.dmFields |= DM_DISPLAYFREQUENCY;\r
- }\r
-\r
- switch ( ChangeDisplaySettingsEx(fgDisplay.DisplayName, &devMode, NULL, haveToTest ? CDS_TEST : CDS_FULLSCREEN , NULL) )\r
- {\r
- case DISP_CHANGE_SUCCESSFUL:\r
- success = GL_TRUE;\r
-\r
- if (!haveToTest)\r
- {\r
- /* update vars in case if windows switched to proper mode */\r
- EnumDisplaySettings( fgDisplay.DisplayName, FREEGLUT_ENUM_CURRENT_SETTINGS, &devMode );\r
- fgState.GameModeSize.X = devMode.dmPelsWidth; \r
- fgState.GameModeSize.Y = devMode.dmPelsHeight;\r
- fgState.GameModeDepth = devMode.dmBitsPerPel;\r
- fgState.GameModeRefresh = devMode.dmDisplayFrequency;\r
- }\r
- break;\r
- case DISP_CHANGE_RESTART:\r
- fggmstr = "The computer must be restarted for the graphics mode to work.";\r
- break;\r
- case DISP_CHANGE_BADFLAGS:\r
- fggmstr = "An invalid set of flags was passed in.";\r
- break;\r
- case DISP_CHANGE_BADPARAM:\r
- fggmstr = "An invalid parameter was passed in. This can include an invalid flag or combination of flags.";\r
- break;\r
- case DISP_CHANGE_FAILED:\r
- fggmstr = "The display driver failed the specified graphics mode.";\r
- break;\r
- case DISP_CHANGE_BADMODE:\r
- fggmstr = "The graphics mode is not supported.";\r
- break;\r
- default:\r
- fggmstr = "Unknown error in graphics mode???"; /* dunno if it is possible,MSDN does not mention any other error */\r
- break;\r
- }\r
-\r
- if ( !success )\r
- {\r
- /* I'd rather get info whats going on in my program than wonder about */\r
- /* magic happenings behind my back, its lib for devels at last ;) */\r
- \r
- /* append display mode to error to make things more informative */\r
- sprintf(displayMode,"%s Problem with requested mode: %ix%i:%i@%i", fggmstr, devMode.dmPelsWidth, devMode.dmPelsHeight, devMode.dmBitsPerPel, devMode.dmDisplayFrequency);\r
- fgWarning(displayMode);\r
- }\r
-#endif\r
-\r
- return success;\r
-}\r
-\r
-\r
-/* -- INTERFACE FUNCTIONS -------------------------------------------------- */\r
-\r
-/*\r
- * Sets the game mode display string\r
- */\r
-void FGAPIENTRY glutGameModeString( const char* string )\r
-{\r
- int width = -1, height = -1, depth = -1, refresh = -1;\r
-\r
- FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGameModeString" );\r
-\r
- /*\r
- * This one seems a bit easier than glutInitDisplayString. The bad thing\r
- * about it that I was unable to find the game mode string definition, so\r
- * that I assumed it is: "[width]x[height]:[depth]@[refresh rate]", which\r
- * appears in all GLUT game mode programs I have seen to date.\r
- */\r
- if( sscanf( string, "%ix%i:%i@%i", &width, &height, &depth, &refresh ) !=\r
- 4 )\r
- if( sscanf( string, "%ix%i:%i", &width, &height, &depth ) != 3 )\r
- if( sscanf( string, "%ix%i@%i", &width, &height, &refresh ) != 3 )\r
- if( sscanf( string, "%ix%i", &width, &height ) != 2 )\r
- if( sscanf( string, ":%i@%i", &depth, &refresh ) != 2 )\r
- if( sscanf( string, ":%i", &depth ) != 1 )\r
- if( sscanf( string, "@%i", &refresh ) != 1 )\r
- fgWarning(\r
- "unable to parse game mode string `%s'",\r
- string\r
- );\r
-\r
- /* All values not specified are now set to -1, which means those\r
- * aspects of the current display mode are not changed in\r
- * fghChangeDisplayMode() above.\r
- */\r
- fgState.GameModeSize.X = width;\r
- fgState.GameModeSize.Y = height;\r
- fgState.GameModeDepth = depth;\r
- fgState.GameModeRefresh = refresh;\r
-}\r
-\r
-\r
-\r
-/*\r
- * Enters the game mode\r
- */\r
-int FGAPIENTRY glutEnterGameMode( void )\r
-{\r
- FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutEnterGameMode" );\r
-\r
- if( fgStructure.GameModeWindow )\r
- fgAddToWindowDestroyList( fgStructure.GameModeWindow );\r
- else\r
- fghRememberState( );\r
-\r
- if( ! fghChangeDisplayMode( GL_FALSE ) )\r
- {\r
- fgWarning( "failed to change screen settings" );\r
- return 0;\r
- }\r
-\r
- fgStructure.GameModeWindow = fgCreateWindow(\r
- NULL, "FREEGLUT", GL_TRUE, 0, 0,\r
- GL_TRUE, fgState.GameModeSize.X, fgState.GameModeSize.Y,\r
- GL_TRUE, GL_FALSE\r
- );\r
-\r
- fgStructure.GameModeWindow->State.Width = fgState.GameModeSize.X;\r
- fgStructure.GameModeWindow->State.Height = fgState.GameModeSize.Y;\r
- fgStructure.GameModeWindow->State.NeedToResize = GL_TRUE;\r
-\r
-#if TARGET_HOST_POSIX_X11\r
-\r
- /*\r
- * Sync needed to avoid a real race, the Xserver must have really created\r
- * the window before we can grab the pointer into it:\r
- */\r
- XSync( fgDisplay.Display, False );\r
- /*\r
- * Grab the pointer to confine it into the window after the calls to\r
- * XWrapPointer() which ensure that the pointer really enters the window.\r
- *\r
- * We also need to wait here until XGrabPointer() returns GrabSuccess,\r
- * otherwise the new window is not viewable yet and if the next function\r
- * (XSetInputFocus) is called with a not yet viewable window, it will exit\r
- * the application which we have to aviod, so wait until it's viewable:\r
- */\r
- while( GrabSuccess != XGrabPointer(\r
- fgDisplay.Display, fgStructure.GameModeWindow->Window.Handle,\r
- TRUE,\r
- ButtonPressMask | ButtonReleaseMask | ButtonMotionMask\r
- | PointerMotionMask,\r
- GrabModeAsync, GrabModeAsync,\r
- fgStructure.GameModeWindow->Window.Handle, None, CurrentTime) )\r
- usleep( 100 );\r
- /*\r
- * Change input focus to the new window. This will exit the application\r
- * if the new window is not viewable yet, see the XGrabPointer loop above.\r
- */\r
- XSetInputFocus(\r
- fgDisplay.Display,\r
- fgStructure.GameModeWindow->Window.Handle,\r
- RevertToNone,\r
- CurrentTime\r
- );\r
-\r
- /* Move the Pointer to the middle of the fullscreen window */\r
- XWarpPointer(\r
- fgDisplay.Display,\r
- None,\r
- fgDisplay.RootWindow,\r
- 0, 0, 0, 0,\r
- fgState.GameModeSize.X/2, fgState.GameModeSize.Y/2\r
- );\r
-\r
-# ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H\r
-\r
- if( fgDisplay.DisplayModeValid )\r
- {\r
- int x, y;\r
- Window child;\r
-\r
- /* Change to viewport to the window topleft edge: */\r
- if( !XF86VidModeSetViewPort( fgDisplay.Display, fgDisplay.Screen, 0, 0 ) )\r
- fgWarning( "XF86VidModeSetViewPort failed" );\r
-\r
- /*\r
- * Final window repositioning: It could be avoided using an undecorated\r
- * window using override_redirect, but this * would possily require\r
- * more changes and investigation.\r
- */\r
-\r
- /* Get the current postion of the drawable area on screen */\r
- XTranslateCoordinates(\r
- fgDisplay.Display,\r
- fgStructure.CurrentWindow->Window.Handle,\r
- fgDisplay.RootWindow,\r
- 0, 0, &x, &y,\r
- &child\r
- );\r
-\r
- /* Move the decorataions out of the topleft corner of the display */\r
- XMoveWindow( fgDisplay.Display, fgStructure.CurrentWindow->Window.Handle,\r
- -x, -y);\r
- }\r
-\r
-#endif\r
-\r
- /* Grab the keyboard, too */\r
- XGrabKeyboard(\r
- fgDisplay.Display,\r
- fgStructure.GameModeWindow->Window.Handle,\r
- FALSE,\r
- GrabModeAsync, GrabModeAsync,\r
- CurrentTime\r
- );\r
-\r
-#endif\r
-\r
- return fgStructure.GameModeWindow->ID;\r
-}\r
-\r
-/*\r
- * Leaves the game mode\r
- */\r
-void FGAPIENTRY glutLeaveGameMode( void )\r
-{\r
- FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutLeaveGameMode" );\r
-\r
- freeglut_return_if_fail( fgStructure.GameModeWindow );\r
-\r
- fgAddToWindowDestroyList( fgStructure.GameModeWindow );\r
- fgStructure.GameModeWindow = NULL;\r
-\r
-#if TARGET_HOST_POSIX_X11\r
-\r
- XUngrabPointer( fgDisplay.Display, CurrentTime );\r
- XUngrabKeyboard( fgDisplay.Display, CurrentTime );\r
-\r
-#endif\r
-\r
- fghRestoreState();\r
-}\r
-\r
-/*\r
- * Returns information concerning the freeglut game mode\r
- */\r
-int FGAPIENTRY glutGameModeGet( GLenum eWhat )\r
-{\r
- FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGameModeGet" );\r
-\r
- switch( eWhat )\r
- {\r
- case GLUT_GAME_MODE_ACTIVE:\r
- return !!fgStructure.GameModeWindow;\r
-\r
- case GLUT_GAME_MODE_POSSIBLE:\r
- return fghChangeDisplayMode( GL_TRUE );\r
-\r
- case GLUT_GAME_MODE_WIDTH:\r
- return fgState.GameModeSize.X;\r
-\r
- case GLUT_GAME_MODE_HEIGHT:\r
- return fgState.GameModeSize.Y;\r
-\r
- case GLUT_GAME_MODE_PIXEL_DEPTH:\r
- return fgState.GameModeDepth;\r
-\r
- case GLUT_GAME_MODE_REFRESH_RATE:\r
- return fgState.GameModeRefresh;\r
-\r
- case GLUT_GAME_MODE_DISPLAY_CHANGED:\r
- /*\r
- * This is true if the game mode has been activated successfully..\r
- */\r
- return !!fgStructure.GameModeWindow;\r
- }\r
-\r
- fgWarning( "Unknown gamemode get: %d", eWhat );\r
- return -1;\r
-}\r
-\r
-/*** END OF FILE ***/\r
+/*
+ * freeglut_gamemode.c
+ *
+ * The game mode handling code.
+ *
+ * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
+ * Written by Pawel W. Olszta, <olszta@sourceforge.net>
+ * Creation date: Thu Dec 16 1999
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <GL/freeglut.h>
+#include "freeglut_internal.h"
+
+/*
+ * TODO BEFORE THE STABLE RELEASE:
+ *
+ * glutGameModeString() -- missing
+ * glutEnterGameMode() -- X11 version
+ * glutLeaveGameMode() -- is that correct?
+ * glutGameModeGet() -- is that correct?
+ */
+
+
+/* -- PRIVATE FUNCTIONS ---------------------------------------------------- */
+extern void fgPlatformRememberState( void );
+extern void fgPlatformRestoreState( void );
+extern GLboolean fgPlatformChangeDisplayMode( GLboolean haveToTest );
+extern void fgPlatformEnterGameMode( void );
+extern void fgPlatformLeaveGameMode( void );
+
+
+/* -- INTERFACE FUNCTIONS -------------------------------------------------- */
+
+/*
+ * Sets the game mode display string
+ */
+void FGAPIENTRY glutGameModeString( const char* string )
+{
+ int width = -1, height = -1, depth = -1, refresh = -1;
+
+ FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGameModeString" );
+
+ /*
+ * This one seems a bit easier than glutInitDisplayString. The bad thing
+ * about it that I was unable to find the game mode string definition, so
+ * that I assumed it is: "[width]x[height]:[depth]@[refresh rate]", which
+ * appears in all GLUT game mode programs I have seen to date.
+ */
+ if( sscanf( string, "%ix%i:%i@%i", &width, &height, &depth, &refresh ) !=
+ 4 )
+ if( sscanf( string, "%ix%i:%i", &width, &height, &depth ) != 3 )
+ if( sscanf( string, "%ix%i@%i", &width, &height, &refresh ) != 3 )
+ if( sscanf( string, "%ix%i", &width, &height ) != 2 )
+ if( sscanf( string, ":%i@%i", &depth, &refresh ) != 2 )
+ if( sscanf( string, ":%i", &depth ) != 1 )
+ if( sscanf( string, "@%i", &refresh ) != 1 )
+ fgWarning(
+ "unable to parse game mode string `%s'",
+ string
+ );
+
+ /* All values not specified are now set to -1, which means those
+ * aspects of the current display mode are not changed in
+ * fgPlatformChangeDisplayMode() above.
+ */
+ fgState.GameModeSize.X = width;
+ fgState.GameModeSize.Y = height;
+ fgState.GameModeDepth = depth;
+ fgState.GameModeRefresh = refresh;
+}
+
+
+
+/*
+ * Enters the game mode
+ */
+int FGAPIENTRY glutEnterGameMode( void )
+{
+ FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutEnterGameMode" );
+
+ if( fgStructure.GameModeWindow )
+ fgAddToWindowDestroyList( fgStructure.GameModeWindow );
+ else
+ fgPlatformRememberState( );
+
+ if( ! fgPlatformChangeDisplayMode( GL_FALSE ) )
+ {
+ fgWarning( "failed to change screen settings" );
+ return 0;
+ }
+
+ fgStructure.GameModeWindow = fgCreateWindow(
+ NULL, "FREEGLUT", GL_TRUE, 0, 0,
+ GL_TRUE, fgState.GameModeSize.X, fgState.GameModeSize.Y,
+ GL_TRUE, GL_FALSE
+ );
+
+ fgStructure.GameModeWindow->State.Width = fgState.GameModeSize.X;
+ fgStructure.GameModeWindow->State.Height = fgState.GameModeSize.Y;
+ fgStructure.GameModeWindow->State.NeedToResize = GL_TRUE;
+
+ fgPlatformEnterGameMode();
+
+ return fgStructure.GameModeWindow->ID;
+}
+
+/*
+ * Leaves the game mode
+ */
+void FGAPIENTRY glutLeaveGameMode( void )
+{
+ FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutLeaveGameMode" );
+
+ freeglut_return_if_fail( fgStructure.GameModeWindow );
+
+ fgAddToWindowDestroyList( fgStructure.GameModeWindow );
+ fgStructure.GameModeWindow = NULL;
+
+ fgPlatformLeaveGameMode();
+
+ fgPlatformRestoreState();
+}
+
+/*
+ * Returns information concerning the freeglut game mode
+ */
+int FGAPIENTRY glutGameModeGet( GLenum eWhat )
+{
+ FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutGameModeGet" );
+
+ switch( eWhat )
+ {
+ case GLUT_GAME_MODE_ACTIVE:
+ return !!fgStructure.GameModeWindow;
+
+ case GLUT_GAME_MODE_POSSIBLE:
+ return fgPlatformChangeDisplayMode( GL_TRUE );
+
+ case GLUT_GAME_MODE_WIDTH:
+ return fgState.GameModeSize.X;
+
+ case GLUT_GAME_MODE_HEIGHT:
+ return fgState.GameModeSize.Y;
+
+ case GLUT_GAME_MODE_PIXEL_DEPTH:
+ return fgState.GameModeDepth;
+
+ case GLUT_GAME_MODE_REFRESH_RATE:
+ return fgState.GameModeRefresh;
+
+ case GLUT_GAME_MODE_DISPLAY_CHANGED:
+ /*
+ * This is true if the game mode has been activated successfully..
+ */
+ return !!fgStructure.GameModeWindow;
+ }
+
+ fgWarning( "Unknown gamemode get: %d", eWhat );
+ return -1;
+}
+
+/*** END OF FILE ***/
projects / freeglut / blobdiff