[Bug 64841] [G33 SNA] Pixmap corruption in Gtk+ and Firefox

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64841

--- Comment #7 from Chris Wilson <chris at chris-wilson.co.uk> ---
The big scary change would be the introduction of cow support. To test, you can
disable it with:

diff --git a/src/sna/sna_accel.c b/src/sna/sna_accel.c
index 371abb0..fc82e09 100644
--- a/src/sna/sna_accel.c
+++ b/src/sna/sna_accel.c
@@ -68,7 +68,7 @@
 #define USE_CPU_BO 1
 #define USE_USERPTR_UPLOADS 1
 #define USE_USERPTR_DOWNLOADS 1
-#define USE_COW 1
+#define USE_COW 0

 #define MIGRATE_ALL 0
 #define DBG_NO_CPU_UPLOAD 0

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