st/xorg: Only damage non-front source in DRI2 CopyRegion hook.
Based on a vmwgfx xa/saa fix.
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/src/gallium/state_trackers/xorg/xorg_dri2.c b/src/gallium/state_trackers/xorg/xorg_dri2.c
index 6f2c52e..3350ac7 100644
--- a/src/gallium/state_trackers/xorg/xorg_dri2.c
+++ b/src/gallium/state_trackers/xorg/xorg_dri2.c
@@ -372,13 +372,15 @@
save_accel = ms->exa->accel;
ms->exa->accel = TRUE;
- /* In case it won't be though, make sure the GPU copy contents of the
- * source pixmap will be used for the software fallback - presumably the
- * client modified them before calling in here.
- */
- exaMoveInPixmap(src_priv->pPixmap);
- DamageRegionAppend(src_draw, pRegion);
- DamageRegionProcessPending(src_draw);
+ if (pSrcBuffer->attachment != DRI2BufferFrontLeft) {
+ /* In case it won't be though, make sure the GPU copy contents of the
+ * source pixmap will be used for the software fallback - presumably the
+ * client modified them before calling in here.
+ */
+ exaMoveInPixmap(src_priv->pPixmap);
+ DamageRegionAppend(src_draw, pRegion);
+ DamageRegionProcessPending(src_draw);
+ }
if (cust && cust->winsys_context_throttle)
cust->winsys_context_throttle(cust, ms->ctx, THROTTLE_SWAP);