/*
* Restores the previously remembered visual settings
*/
static void fghRestoreState( void )
{
#if TARGET_HOST_POSIX_X11
/* Restore the remembered pointer position: */
XWarpPointer(
fgDisplay.Display, None, fgDisplay.RootWindow, 0, 0, 0, 0,
fgDisplay.DisplayPointerX, fgDisplay.DisplayPointerY
);
# ifdef HAVE_X11_EXTENSIONS_XRANDR_H
if(fgDisplay.prev_size_valid) {
if(xrandr_resize(fgDisplay.prev_xsz, fgDisplay.prev_ysz, fgDisplay.prev_refresh, 0) != -1) {
fgDisplay.prev_size_valid = 0;
# ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
fgDisplay.DisplayModeValid = 0;
# endif
return;
}
}
# endif
# ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
/*
* This highly depends on the XFree86 extensions,
* not approved as X Consortium standards
*/
if( fgDisplay.DisplayModeValid )
{
XF86VidModeModeInfo** displayModes;
int i, displayModesCount;
if( !XF86VidModeGetAllModeLines(
fgDisplay.Display,
fgDisplay.Screen,
&displayModesCount,
&displayModes ) )
{
fgWarning( "XF86VidModeGetAllModeLines failed" );
return;
}
/*
* Check every of the modes looking for one that matches our demands.
* If we find one, switch to it and restore the remembered viewport.
*/
for( i = 0; i < displayModesCount; i++ )
{
if(displayModes[ i ]->hdisplay == fgDisplay.DisplayMode.hdisplay &&
displayModes[ i ]->vdisplay == fgDisplay.DisplayMode.vdisplay &&
displayModes[ i ]->dotclock == fgDisplay.DisplayModeClock )
{
if( !XF86VidModeSwitchToMode(
fgDisplay.Display,
fgDisplay.Screen,
displayModes[ i ] ) )
{
fgWarning( "XF86VidModeSwitchToMode failed" );
break;
}
if( !XF86VidModeSetViewPort(
fgDisplay.Display,
fgDisplay.Screen,
fgDisplay.DisplayViewPortX,
fgDisplay.DisplayViewPortY ) )
fgWarning( "XF86VidModeSetViewPort failed" );
/*
* For the case this would be the last X11 call the application
* calls exit() we've to flush the X11 output queue to have the
* commands sent to the X server before the application exits.
*/
XFlush( fgDisplay.Display );
fgDisplay.DisplayModeValid = 0;
# ifdef HAVE_X11_EXTENSIONS_XRANDR_H
fgDisplay.prev_size_valid = 0;
# endif
break;
}
}
XFree( displayModes );
}
# endif
#elif TARGET_HOST_MS_WINDOWS
/* Restore the previously remembered desktop display settings */
ChangeDisplaySettingsEx( fgDisplay.DisplayName,&fgDisplay.DisplayMode, 0,0,0 );
#endif
}
/*
* Changes the current display mode to match user's settings
*/
static GLboolean fghChangeDisplayMode( GLboolean haveToTest )
{
GLboolean success = GL_FALSE;
#if TARGET_HOST_POSIX_X11
/* first try to use XRandR, then fallback to XF86VidMode */
# ifdef HAVE_X11_EXTENSIONS_XRANDR_H
if(xrandr_resize(fgState.GameModeSize.X, fgState.GameModeSize.Y,
fgState.GameModeRefresh, haveToTest) != -1) {
return GL_TRUE;
}
# endif
/*
* This highly depends on the XFree86 extensions,
* not approved as X Consortium standards
*/
# ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
/*
* This is also used by applications which check modes by calling
* glutGameModeGet(GLUT_GAME_MODE_POSSIBLE), so allow the check:
*/
if( haveToTest || fgDisplay.DisplayModeValid )
{
XF86VidModeModeInfo** displayModes;
int i, displayModesCount;
/* If we don't have a valid modeline in the display structure, which
* can happen if this is called from glutGameModeGet instead of
* glutEnterGameMode, then we need to query the current mode, to make
* unspecified settings to default to their current values.
*/
if(!fgDisplay.DisplayModeValid) {
if(!XF86VidModeGetModeLine(fgDisplay.Display, fgDisplay.Screen,
&fgDisplay.DisplayModeClock, &fgDisplay.DisplayMode)) {
return success;
}
}
if (fgState.GameModeSize.X == -1)
{
fgState.GameModeSize.X = fgDisplay.DisplayMode.hdisplay;
}
if (fgState.GameModeSize.Y == -1)
{
fgState.GameModeSize.Y = fgDisplay.DisplayMode.vdisplay;
}
if (fgState.GameModeDepth == -1)
{
/* can't get color depth from this, nor can we change it, do nothing
* TODO: get with XGetVisualInfo()? but then how to set?
*/
}
if (fgState.GameModeRefresh == -1)
{
/* Compute the displays refresh rate, dotclock comes in kHz. */
int refresh = ( fgDisplay.DisplayModeClock * 1000 ) /
( fgDisplay.DisplayMode.htotal * fgDisplay.DisplayMode.vtotal );
fgState.GameModeRefresh = refresh;
}
/* query all possible display modes */
if( !XF86VidModeGetAllModeLines(
fgDisplay.Display,
fgDisplay.Screen,
&displayModesCount,
&displayModes ) )
{
fgWarning( "XF86VidModeGetAllModeLines failed" );
return success;
}
/*
* Check every of the modes looking for one that matches our demands,
* ignoring the refresh rate if no exact match could be found.
*/
i = fghCheckDisplayModes( GL_TRUE, displayModesCount, displayModes );
if( i < 0 ) {
i = fghCheckDisplayModes( GL_FALSE, displayModesCount, displayModes );
}
success = ( i < 0 ) ? GL_FALSE : GL_TRUE;
if( !haveToTest && success ) {
if( !XF86VidModeSwitchToMode(
fgDisplay.Display,
fgDisplay.Screen,
displayModes[ i ] ) )
fgWarning( "XF86VidModeSwitchToMode failed" );
}
XFree( displayModes );
}
# endif
#elif TARGET_HOST_MS_WINDOWS
DEVMODE devMode;
char *fggmstr = NULL;
char displayMode[300];
success = GL_FALSE;
EnumDisplaySettings( fgDisplay.DisplayName, -1, &devMode );
devMode.dmFields = 0;
if (fgState.GameModeSize.X!=-1)
{
devMode.dmPelsWidth = fgState.GameModeSize.X;
devMode.dmFields |= DM_PELSWIDTH;
}
if (fgState.GameModeSize.Y!=-1)
{
devMode.dmPelsHeight = fgState.GameModeSize.Y;
devMode.dmFields |= DM_PELSHEIGHT;
}
if (fgState.GameModeDepth!=-1)
{
devMode.dmBitsPerPel = fgState.GameModeDepth;
devMode.dmFields |= DM_BITSPERPEL;
}
if (fgState.GameModeRefresh!=-1)
{
devMode.dmDisplayFrequency = fgState.GameModeRefresh;
devMode.dmFields |= DM_DISPLAYFREQUENCY;
}
switch ( ChangeDisplaySettingsEx(fgDisplay.DisplayName, &devMode, NULL, haveToTest ? CDS_TEST : CDS_FULLSCREEN , NULL) )
{
case DISP_CHANGE_SUCCESSFUL:
success = GL_TRUE;
if (!haveToTest)
{
/* update vars in case if windows switched to proper mode */
EnumDisplaySettings( fgDisplay.DisplayName, FREEGLUT_ENUM_CURRENT_SETTINGS, &devMode );
fgState.GameModeSize.X = devMode.dmPelsWidth;
fgState.GameModeSize.Y = devMode.dmPelsHeight;
fgState.GameModeDepth = devMode.dmBitsPerPel;
fgState.GameModeRefresh = devMode.dmDisplayFrequency;
}
break;
case DISP_CHANGE_RESTART:
fggmstr = "The computer must be restarted for the graphics mode to work.";
break;
case DISP_CHANGE_BADFLAGS:
fggmstr = "An invalid set of flags was passed in.";
break;
case DISP_CHANGE_BADPARAM:
fggmstr = "An invalid parameter was passed in. This can include an invalid flag or combination of flags.";
break;
case DISP_CHANGE_FAILED:
fggmstr = "The display driver failed the specified graphics mode.";
break;
case DISP_CHANGE_BADMODE:
fggmstr = "The graphics mode is not supported.";
break;
default:
fggmstr = "Unknown error in graphics mode???"; /* dunno if it is possible,MSDN does not mention any other error */
break;
}
if ( !success )
{
/* I'd rather get info whats going on in my program than wonder about */
/* magic happenings behind my back, its lib for devels at last ;) */
/* append display mode to error to make things more informative */
sprintf(displayMode,"%s Problem with requested mode: %ix%i:%i@%i", fggmstr, devMode.dmPelsWidth, devMode.dmPelsHeight, devMode.dmBitsPerPel, devMode.dmDisplayFrequency);
fgWarning(displayMode);
}
#endif
return success;
}
/*
* Changes the current display mode to match user's settings
*/
GLboolean fgPlatformChangeDisplayMode( GLboolean haveToTest )
{
GLboolean success = GL_FALSE;
/* first try to use XRandR, then fallback to XF86VidMode */
# ifdef HAVE_X11_EXTENSIONS_XRANDR_H
if(xrandr_resize(fgState.GameModeSize.X, fgState.GameModeSize.Y,
fgState.GameModeRefresh, haveToTest) != -1) {
return GL_TRUE;
}
# endif
/*
* This highly depends on the XFree86 extensions,
* not approved as X Consortium standards
*/
# ifdef HAVE_X11_EXTENSIONS_XF86VMODE_H
/*
* This is also used by applications which check modes by calling
* glutGameModeGet(GLUT_GAME_MODE_POSSIBLE), so allow the check:
*/
if( haveToTest || fgDisplay.pDisplay.DisplayModeValid )
{
XF86VidModeModeInfo** displayModes;
int i, displayModesCount;
/* If we don't have a valid modeline in the display structure, which
* can happen if this is called from glutGameModeGet instead of
* glutEnterGameMode, then we need to query the current mode, to make
* unspecified settings to default to their current values.
*/
if(!fgDisplay.pDisplay.DisplayModeValid) {
if(!XF86VidModeGetModeLine(fgDisplay.pDisplay.Display, fgDisplay.pDisplay.Screen,
&fgDisplay.pDisplay.DisplayModeClock, &fgDisplay.pDisplay.DisplayMode)) {
return success;
}
}
if (fgState.GameModeSize.X == -1)
{
fgState.GameModeSize.X = fgDisplay.pDisplay.DisplayMode.hdisplay;
}
if (fgState.GameModeSize.Y == -1)
{
fgState.GameModeSize.Y = fgDisplay.pDisplay.DisplayMode.vdisplay;
}
if (fgState.GameModeDepth == -1)
{
/* can't get color depth from this, nor can we change it, do nothing
* TODO: get with XGetVisualInfo()? but then how to set?
*/
}
if (fgState.GameModeRefresh == -1)
{
/* Compute the displays refresh rate, dotclock comes in kHz. */
int refresh = ( fgDisplay.pDisplay.DisplayModeClock * 1000 ) /
( fgDisplay.pDisplay.DisplayMode.htotal * fgDisplay.pDisplay.DisplayMode.vtotal );
fgState.GameModeRefresh = refresh;
}
/* query all possible display modes */
if( !XF86VidModeGetAllModeLines(
fgDisplay.pDisplay.Display,
fgDisplay.pDisplay.Screen,
&displayModesCount,
&displayModes ) )
{
fgWarning( "XF86VidModeGetAllModeLines failed" );
return success;
}
/*
* Check every of the modes looking for one that matches our demands,
* ignoring the refresh rate if no exact match could be found.
*/
i = fghCheckDisplayModes( GL_TRUE, displayModesCount, displayModes );
if( i < 0 ) {
i = fghCheckDisplayModes( GL_FALSE, displayModesCount, displayModes );
}
success = ( i < 0 ) ? GL_FALSE : GL_TRUE;
if( !haveToTest && success ) {
if( !XF86VidModeSwitchToMode(
fgDisplay.pDisplay.Display,
fgDisplay.pDisplay.Screen,
displayModes[ i ] ) )
fgWarning( "XF86VidModeSwitchToMode failed" );
}
XFree( displayModes );
}
# endif
return success;
}
