Merge commit 'origin/master' into drm-gem

[mesa.git] / src / mesa / drivers / dri / r200 / r200_lock.c

diff --git a/src/mesa/drivers/dri/r200/r200_lock.c b/src/mesa/drivers/dri/r200/r200_lock.c
index 9ffdb2b212770ee9d9c3d40903d522f3dbfdb388..f89b526a31202f8362ffa00dd8adb0758e8ec6c1 100644 (file)
--- a/src/mesa/drivers/dri/r200/r200_lock.c
+++ b/src/mesa/drivers/dri/r200/r200_lock.c
@@ -1,4 +1,3 @@
-/* $XFree86: xc/lib/GL/mesa/src/drv/r200/r200_lock.c,v 1.1 2002/10/30 12:51:52 alanh Exp $ */
 /*
 Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
 
@@ -53,8 +52,10 @@ static void
 r200UpdatePageFlipping( r200ContextPtr rmesa )
 {
    rmesa->doPageFlip = rmesa->sarea->pfState;
-   driFlipRenderbuffers(rmesa->glCtx->WinSysDrawBuffer,
-                        rmesa->sarea->pfCurrentPage);
+   if (rmesa->glCtx->WinSysDrawBuffer) {
+      driFlipRenderbuffers(rmesa->glCtx->WinSysDrawBuffer,
+                           rmesa->sarea->pfCurrentPage);
+   }
 }