mesa: Update invalidate compatibility fix.

[gentoo-draconx.git] / media-libs / mesa / files / 0001-dri2-Fix-compatibility-with-old-servers.patch

diff --git a/media-libs/mesa/files/0001-dri2-Fix-compatibility-with-old-servers.patch b/media-libs/mesa/files/0001-dri2-Fix-compatibility-with-old-servers.patch
new file mode 100644 (file)
index 0000000..e59d4c7
--- /dev/null
+++ b/media-libs/mesa/files/0001-dri2-Fix-compatibility-with-old-servers.patch
@@ -0,0 +1,44 @@
+From c8327cc115997275f701993a7edbcbf42b08912b Mon Sep 17 00:00:00 2001
+From: Nick Bowler <nbowler@draconx.ca>
+Date: Fri, 30 Apr 2010 18:14:20 -0400
+Subject: [PATCH v3] dri2: Fix compatibility with old servers.
+
+Commit 61d26bc82e7c4100a ("dri2: Event driven buffer validation.")
+introduced code to handle "old" servers which do not support invalidate
+events (i.e. 1.8.0).  However, the compatibility code causes severe
+stuttering on my GM45 with "older" servers that do not support swap
+events (i.e. 1.7.6).  It seems that the solution is to only run the
+compatibility code when swap events are supported.
+
+Fixes fdo bug #27277.
+
+Signed-off-by: Nick Bowler <nbowler@draconx.ca>
+---
+ src/glx/dri2_glx.c |    4 ++--
+ 1 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/glx/dri2_glx.c b/src/glx/dri2_glx.c
+index 6058c72..5516324 100644
+--- a/src/glx/dri2_glx.c
++++ b/src/glx/dri2_glx.c
+@@ -364,7 +364,7 @@ dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
+    __GLXDRIdisplayPrivate *pdp = (__GLXDRIdisplayPrivate *)priv->dri2Display;
+ 
+    /* Old servers don't send invalidate events */
+-   if (!pdp->invalidateAvailable)
++   if (pdp->swapAvailable && !pdp->invalidateAvailable)
+        dri2InvalidateBuffers(priv->dpy, pdraw->base.drawable);
+ 
+    dri2WaitGL(loaderPrivate);
+@@ -428,7 +428,7 @@ dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
+ #endif
+ 
+     /* Old servers don't send invalidate events */
+-    if (!pdp->invalidateAvailable)
++    if (pdp->swapAvailable && !pdp->invalidateAvailable)
+        dri2InvalidateBuffers(dpyPriv->dpy, pdraw->drawable);
+ 
+     /* Old servers can't handle swapbuffers */
+-- 
+1.6.4.4
+