--- src/display.c	2009-02-28 23:32:55.000000000 +0500
+++ src/display.c	2009-02-28 23:35:25.000000000 +0500
@@ -1644,6 +1644,7 @@
 			    }
 			}

+			s->damageMask |= COMP_SCREEN_DAMAGE_ALL_MASK;
 			if (s->damageMask & COMP_SCREEN_DAMAGE_REGION_MASK)
 			{
 			    XIntersectRegion (s->damage, &s->region,
@@ -1684,6 +1685,7 @@

 			if (mask & COMP_SCREEN_DAMAGE_ALL_MASK)
 			{
+			    glFlush ();
 			    glXSwapBuffers (d->display, s->output);
 			}
 			else
--- src/screen.c	2009-02-28 23:33:05.000000000 +0500
+++ src/screen.c	2009-02-28 23:37:18.000000000 +0500
@@ -3845,7 +3845,7 @@
     if (s->pendingCommands)
     {
 	makeScreenCurrent (s);
-	glFinish ();
+	glFlush();

 	s->pendingCommands = FALSE;
     }