From 6f916ffec7767eeab62132eb6575043969104c81 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <daenzer@vmware.com>
Date: Sun, 18 Dec 2011 18:29:39 +0200
Subject: [PATCH] dri2: Always re-generate front buffer information when asked
 for it.
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Otherwise we might keep stale cached information, e.g. after the driver
performed page flipping.

This is part of the fix for
https://bugs.freedesktop.org/show_bug.cgi?id=35452 .

Signed-off-by: Michel Dänzer <daenzer@vmware.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@nokia.com>
Reviewed-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Signed-off-by: Keith Packard <keithp@keithp.com>
---
 hw/xfree86/dri2/dri2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/xfree86/dri2/dri2.c b/hw/xfree86/dri2/dri2.c
index d2035a4e6..eb84aa5f5 100644
--- a/hw/xfree86/dri2/dri2.c
+++ b/hw/xfree86/dri2/dri2.c
@@ -377,6 +377,7 @@ allocate_or_reuse_buffer(DrawablePtr pDraw, DRI2ScreenPtr ds,
     int old_buf = find_attachment(pPriv, attachment);
 
     if ((old_buf < 0)
+	|| attachment == DRI2BufferFrontLeft
 	|| !dimensions_match
 	|| (pPriv->buffers[old_buf]->format != format)) {
 	*buffer = (*ds->CreateBuffer)(pDraw, attachment, format);