--- /dev/null
+diff -r 5002d6aeb85c src/video/x11/SDL_x11sym.h
+--- a/src/video/x11/SDL_x11sym.h Fri Jul 09 17:19:18 2010 +0200
++++ b/src/video/x11/SDL_x11sym.h Sun Aug 15 11:19:34 2010 -0600
+@@ -189,6 +189,14 @@
+ SDL_X11_SYM(XRRScreenSize *,XRRConfigSizes,(XRRScreenConfiguration *config, int *nsizes),(config,nsizes),return)
+ SDL_X11_SYM(Status,XRRSetScreenConfig,(Display *dpy, XRRScreenConfiguration *config, Drawable draw, int size_index, Rotation rotation, Time timestamp),(dpy,config,draw,size_index,rotation,timestamp),return)
+ SDL_X11_SYM(void,XRRFreeScreenConfigInfo,(XRRScreenConfiguration *config),(config),)
++SDL_X11_SYM(XRRScreenResources *,XRRGetScreenResources,(Display *dpy, Window window),(dpy,window),return)
++SDL_X11_SYM(XRRScreenResources *,XRRGetScreenResourcesCurrent,(Display *dpy, Window window),(dpy,window),return)
++SDL_X11_SYM(void,XRRFreeScreenResources,(XRRScreenResources *resources),(resources),)
++SDL_X11_SYM(int,XRRGetCrtcGammaSize,(Display *dpy, RRCrtc crtc),(dpy,crtc),return)
++SDL_X11_SYM(XRRCrtcGamma *,XRRAllocGamma,(int size),(size),return)
++SDL_X11_SYM(void,XRRFreeGamma,(XRRCrtcGamma *gamma),(gamma),)
++SDL_X11_SYM(XRRCrtcGamma *,XRRGetCrtcGamma,(Display *dpy, RRCrtc crtc),(dpy,crtc),return)
++SDL_X11_SYM(void,XRRSetCrtcGamma,(Display *dpy, RRCrtc crtc, XRRCrtcGamma *gamma),(dpy,crtc,gamma),)
+ #endif
+
+ /* end of SDL_x11sym.h ... */
+diff -r 5002d6aeb85c src/video/x11/SDL_x11video.c
+--- a/src/video/x11/SDL_x11video.c Fri Jul 09 17:19:18 2010 +0200
++++ b/src/video/x11/SDL_x11video.c Sun Aug 15 11:19:34 2010 -0600
+@@ -65,6 +65,9 @@
+ static void X11_UpdateMouse(_THIS);
+ static int X11_SetColors(_THIS, int firstcolor, int ncolors,
+ SDL_Color *colors);
++static void X11_FreeSavedGammaRamp(_THIS);
++static int X11_RestoreGammaRamp(_THIS);
++static int X11_SaveGammaRamp(_THIS);
+ static int X11_SetGammaRamp(_THIS, Uint16 *ramp);
+ static void X11_VideoQuit(_THIS);
+
+@@ -667,6 +670,7 @@
+ if ( this->hidden->depth == 32 ) {
+ vformat->Amask = (0xFFFFFFFF & ~(vformat->Rmask|vformat->Gmask|vformat->Bmask));
+ }
++ X11_SaveGammaRamp(this);
+ X11_SaveVidModeGamma(this);
+
+ /* Allow environment override of screensaver disable. */
+@@ -1432,10 +1436,248 @@
+ return nrej == 0;
+ }
+
++void X11_FreeSavedGammaRamp(_THIS)
++{
++ int i;
++
++#if SDL_VIDEO_DRIVER_X11_XRANDR
++ if (gamma_ramp_saved_xrr) {
++ for ( i=0; i<gamma_ramp_saved_xrr_size; ++i ) {
++ XRRFreeGamma(gamma_ramp_saved_xrr[i]);
++ }
++ SDL_free(gamma_ramp_saved_xrr);
++ gamma_ramp_saved_xrr = NULL;
++ }
++#endif
++
++#if SDL_VIDEO_DRIVER_X11_VIDMODE
++ if (gamma_ramp_saved_vm) {
++ SDL_free(gamma_ramp_saved_vm);
++ gamma_ramp_saved_vm = NULL;
++ }
++#endif
++}
++
++int X11_SaveGammaRamp(_THIS)
++{
++ int i;
++ Bool succeeded;
++
++ X11_FreeSavedGammaRamp(this);
++
++#if SDL_VIDEO_DRIVER_X11_XRANDR
++ if (use_xrandr) {
++ XRRScreenResources *resrc;
++
++ if (use_xrandr >= 103) {
++ resrc = XRRGetScreenResourcesCurrent(SDL_Display, SDL_Root);
++ } else {
++ resrc = XRRGetScreenResources(SDL_Display, SDL_Root);
++ }
++
++ if (resrc != NULL) {
++ gamma_ramp_saved_xrr_size = resrc->ncrtc;
++ gamma_ramp_saved_xrr = SDL_malloc(
++ sizeof(gamma_ramp_saved_xrr[0]) *
++ gamma_ramp_saved_xrr_size);
++ }
++
++ for ( i=0; resrc != NULL && i<resrc->ncrtc; ++i ) {
++ gamma_ramp_saved_xrr[i] = XRRGetCrtcGamma(SDL_Display,
++ resrc->crtcs[i]);
++ }
++
++ if (resrc != NULL) {
++ XRRFreeScreenResources(resrc);
++ return(0);
++ }
++ }
++#endif /* SDL_VIDEO_DRIVER_X11_XRANDR */
++
++#if SDL_VIDEO_DRIVER_X11_VIDMODE
++ if (use_vidmode >= 200 && gamma_ramp_size == 0) {
++ succeeded = SDL_NAME(XF86VidModeGetGammaRampSize)(
++ SDL_Display, SDL_Screen,
++ &gamma_ramp_size);
++
++ if (!succeeded) {
++ gamma_ramp_size = 0;
++ }
++ }
++
++ if (use_vidmode >= 200 && gamma_ramp_size > 0) {
++ gamma_ramp_saved_vm = SDL_malloc(
++ sizeof(gamma_ramp_saved_vm[0]) *
++ 3 * gamma_ramp_size);
++
++ succeeded = SDL_NAME(XF86VidModeGetGammaRamp)(
++ SDL_Display, SDL_Screen,
++ gamma_ramp_size,
++ gamma_ramp_saved_vm + 0*gamma_ramp_size,
++ gamma_ramp_saved_vm + 1*gamma_ramp_size,
++ gamma_ramp_saved_vm + 2*gamma_ramp_size);
++
++ if (!succeeded) {
++ SDL_free(gamma_ramp_saved_vm);
++ gamma_ramp_saved_vm = NULL;
++ } else {
++ return(0);
++ }
++ }
++#endif /* SDL_VIDEO_DRIVER_X11_VIDMODE */
++
++ return(-1);
++}
++
++int X11_RestoreGammaRamp(_THIS)
++{
++ int i;
++ Bool succeeded;
++
++#if SDL_VIDEO_DRIVER_X11_XRANDR
++ if (use_xrandr && gamma_ramp_saved_xrr != NULL) {
++ XRRScreenResources *resrc;
++
++ if (use_xrandr >= 103) {
++ resrc = XRRGetScreenResourcesCurrent(SDL_Display, SDL_Root);
++ } else {
++ resrc = XRRGetScreenResources(SDL_Display, SDL_Root);
++ }
++
++ for ( i=0; resrc != NULL && i<resrc->ncrtc && i<gamma_ramp_saved_xrr_size; ++i ) {
++ XRRSetCrtcGamma(SDL_Display, resrc->crtcs[i],
++ gamma_ramp_saved_xrr[i]);
++ }
++
++ if (resrc != NULL) {
++ XRRFreeScreenResources(resrc);
++ return(0);
++ }
++ }
++#endif /* SDL_VIDEO_DRIVER_X11_XRANDR */
++
++#if SDL_VIDEO_DRIVER_X11_VIDMODE
++ if (use_vidmode >= 200 && gamma_ramp_saved_vm != NULL) {
++ succeeded = SDL_NAME(XF86VidModeSetGammaRamp)(
++ SDL_Display, SDL_Screen,
++ gamma_ramp_size,
++ gamma_ramp_saved_vm + 0*gamma_ramp_size,
++ gamma_ramp_saved_vm + 1*gamma_ramp_size,
++ gamma_ramp_saved_vm + 2*gamma_ramp_size);
++
++ if (succeeded)
++ return(0);
++ }
++#endif /* SDL_VIDEO_DRIVER_X11_VIDMODE */
++
++ return(-1);
++}
++
+ int X11_SetGammaRamp(_THIS, Uint16 *ramp)
+ {
+- int i, ncolors;
++ int i, j, ncolors;
+ XColor xcmap[256];
++ Bool succeeded;
++
++#if SDL_VIDEO_DRIVER_X11_XRANDR
++ if (use_xrandr) {
++ XRRCrtcGamma *gamma = NULL;
++ int gammasize = 0;
++ XRRScreenResources *resrc;
++
++ if (use_xrandr >= 103) {
++ resrc = XRRGetScreenResourcesCurrent(SDL_Display, SDL_Root);
++ } else {
++ resrc = XRRGetScreenResources(SDL_Display, SDL_Root);
++ }
++
++ /* Implementation Note:
++ * We try to make few assumptions here, notably:
++ * - Ramp size can vary between crtcs
++ * (which can happen when using multiple video cards)
++ * - Ramp size (by index) can vary between calls
++ * (which can happen if the window is moved to a new crtc)
++ */
++ for ( i=0; resrc != NULL && i<resrc->ncrtc; ++i ) {
++ int crtcgs;
++
++ crtcgs = XRRGetCrtcGammaSize(SDL_Display,
++ resrc->crtcs[i]);
++ if (crtcgs != gammasize) {
++ /* Size in this CRTC differs from last */
++ if (gamma != NULL) {
++ XRRFreeGamma(gamma);
++ }
++
++ gammasize = crtcgs;
++ gamma = XRRAllocGamma(gammasize);
++
++ for ( j=0; j<gammasize; ++j ) {
++ gamma->red[j] =
++ ramp[0*256+j*256/gammasize];
++ gamma->green[j] =
++ ramp[1*256+j*256/gammasize];
++ gamma->blue[j] =
++ ramp[2*256+j*256/gammasize];
++ }
++ }
++
++ XRRSetCrtcGamma(SDL_Display, resrc->crtcs[i], gamma);
++ }
++
++ if (gamma != NULL) {
++ XRRFreeGamma(gamma);
++ }
++
++ if (resrc != NULL) {
++ XRRFreeScreenResources(resrc);
++ return(0);
++ }
++ }
++#endif /* SDL_VIDEO_DRIVER_X11_XRANDR */
++
++#if SDL_VIDEO_DRIVER_X11_VIDMODE
++ if (use_vidmode >= 200 && gamma_ramp_size == 0) {
++ succeeded = SDL_NAME(XF86VidModeGetGammaRampSize)(
++ SDL_Display, SDL_Screen,
++ &gamma_ramp_size);
++
++ if (!succeeded) {
++ gamma_ramp_size = 0;
++ }
++ }
++
++ if (use_vidmode >= 200 && gamma_ramp_size > 0) {
++ Uint16 *sizedramp;
++
++ if (gamma_ramp_size == 256) {
++ sizedramp = ramp;
++ } else {
++ sizedramp = SDL_stack_alloc(Uint16, 3*gamma_ramp_size);
++ if (sizedramp == NULL) {
++ SDL_OutOfMemory();
++ return(-1);
++ }
++
++ for ( i=0; i<gamma_ramp_size*3; ++i ) {
++ sizedramp[i] = ramp[i * 256 / gamma_ramp_size];
++ }
++ }
++
++ succeeded = SDL_NAME(XF86VidModeSetGammaRamp)(
++ SDL_Display, SDL_Screen,
++ gamma_ramp_size,
++ sizedramp+0*256,
++ sizedramp+1*256,
++ sizedramp+2*256);
++
++ if (gamma_ramp_size != 256) {
++ SDL_stack_free(sizedramp);
++ }
++
++ return(succeeded ? 0 : -1);
++ }
++#endif /* SDL_VIDEO_DRIVER_X11_VIDMODE */
+
+ /* See if actually setting the gamma is supported */
+ if ( SDL_Visual->class != DirectColor ) {
+@@ -1507,7 +1749,9 @@
+ /* Restore gamma settings if they've changed */
+ if ( SDL_GetAppState() & SDL_APPACTIVE ) {
+ X11_SwapVidModeGamma(this);
++ X11_RestoreGammaRamp(this);
+ }
++ X11_FreeSavedGammaRamp(this);
+
+ /* Free that blank cursor */
+ if ( SDL_BlankCursor != NULL ) {
+diff -r 5002d6aeb85c src/video/x11/SDL_x11video.h
+--- a/src/video/x11/SDL_x11video.h Fri Jul 09 17:19:18 2010 +0200
++++ b/src/video/x11/SDL_x11video.h Sun Aug 15 11:19:34 2010 -0600
+@@ -119,12 +119,16 @@
+ XRRScreenConfiguration* screen_config;
+ int saved_size_id;
+ Rotation saved_rotation;
++ XRRCrtcGamma** gamma_ramp_saved_xrr;
++ int gamma_ramp_saved_xrr_size;
+ #endif
+ #if SDL_VIDEO_DRIVER_X11_VIDMODE
+ SDL_NAME(XF86VidModeModeInfo) saved_mode;
+ struct {
+ int x, y;
+ } saved_view;
++ int gamma_ramp_size;
++ Uint16* gamma_ramp_saved_vm;
+ #endif
+ #if SDL_VIDEO_DRIVER_X11_XME /* XiG XME fullscreen */
+ XiGMiscResolutionInfo saved_res;
+@@ -182,6 +186,10 @@
+ #define mouse_accel (this->hidden->mouse_accel)
+ #define mouse_relative (this->hidden->mouse_relative)
+ #define SDL_modelist (this->hidden->modelist)
++#define gamma_ramp_size (this->hidden->gamma_ramp_size)
++#define gamma_ramp_saved_vm (this->hidden->gamma_ramp_saved_vm)
++#define gamma_ramp_saved_xrr (this->hidden->gamma_ramp_saved_xrr)
++#define gamma_ramp_saved_xrr_size (this->hidden->gamma_ramp_saved_xrr_size)
+ #define xinerama_info (this->hidden->xinerama_info)
+ #define saved_mode (this->hidden->saved_mode)
+ #define saved_view (this->hidden->saved_view)
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