X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Ffreeglut_window.c;h=14733e2aa31f879845589ddb463d632509946b3a;hb=c0b24ae9f197885c2bfde8ca2fc4883858b7fc33;hp=21b3006336e0de96447df0cdd9a22945f8d1b233;hpb=1a7b5b7702bcc093a613b02be7af4720f2618c79;p=freeglut

diff --git a/src/freeglut_window.c b/src/freeglut_window.c
index 21b3006..14733e2 100644
--- a/src/freeglut_window.c
+++ b/src/freeglut_window.c
@@ -306,6 +306,8 @@ GLboolean fgSetupPixelFormat( SFG_Window* window, GLboolean checkOnly, unsigned
 void fgSetWindow ( SFG_Window *window )
 {
 #if TARGET_HOST_UNIX_X11
+  if ( window )
+  {
     /*
 	 * Make the selected window's GLX context the current one
      */
@@ -314,7 +316,7 @@ void fgSetWindow ( SFG_Window *window )
         window->Window.Handle,
         window->Window.Context
     );
-
+  }
 #elif TARGET_HOST_WIN32
 	/*
 	 * Release the previous' context's device context
@@ -395,6 +397,10 @@ void fgOpenWindow( SFG_Window* window, const char* title, int x, int y, int w, i
          */
         fgState.DisplayMode |= GLUT_DOUBLE ;
         window->Window.VisualInfo = fgChooseVisual();
+	/* OK, we got a double-buffered window, but we only wanted
+	 * single-buffered.  Clear the double-buffer flag now.
+	 */
+	fgState.DisplayMode &= ~GLUT_DOUBLE ;
       }
 
       /*