an optimization to call XF86VidModeGetGammaRampSize only when opening the window...

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@6201 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/vid_glx.c b/vid_glx.c
index eab081aad9cc7f655986244d7e6b12ce2fe4fb79..150736df5b9ae4d5f874c33ad5cbf8cc1d406c5e 100644 (file)
--- a/vid_glx.c
+++ b/vid_glx.c
@@ -93,6 +93,8 @@ static qboolean mouse_avail = true;
 static qboolean vid_usingmouse = false;
 static qboolean vid_usingvsync = false;
 static qboolean vid_usevsync = false;
+static qboolean vid_x11_hardwaregammasupported = false;
+static int vid_x11_gammarampsize = 0;
 static float   mouse_x, mouse_y;
 static int p_mouse_x, p_mouse_y;
 
@@ -561,7 +563,6 @@ void InitSig(void)
 
 void VID_Finish (qboolean allowmousegrab)
 {
-       int rampsize;
        qboolean vid_usemouse;
 
        vid_usevsync = vid_vsync.integer && !cls.timedemo && gl_videosyncavailable;
@@ -589,8 +590,8 @@ void VID_Finish (qboolean allowmousegrab)
                qglXSwapBuffers(vidx11_display, win);
        }
 
-       if(XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &rampsize))
-               VID_UpdateGamma(false, rampsize);
+       if (vid_x11_hardwaregammasupported)
+               VID_UpdateGamma(false, vid_x11_gammarampsize);
 }
 
 int VID_SetGamma(unsigned short *ramps, int rampsize)
@@ -837,6 +838,7 @@ int VID_InitMode(int fullscreen, int width, int height, int bpp, int refreshrate
        vid_usingvsync = false;
        vid_hidden = false;
        vid_activewindow = true;
+       vid_x11_hardwaregammasupported = XF86VidModeGetGammaRampSize(vidx11_display, vidx11_screen, &vid_x11_gammarampsize) != 0;
        GL_Init();
        return true;
 }