Mesa/n_Disable-Xshm-for-now-since-it-results-in-render-erro.patch

From cd5af5c511b50890abe24d1e212ba9817f4074dd Mon Sep 17 00:00:00 2001
From: Stefan Dirsch <sndirsch@suse.de>
Date: Tue, 11 Dec 2018 11:36:26 +0100
Subject: [PATCH] Disable Xshm for now since it results in render errors

Xshm results in render errors and missing screen refreshes on GNOME3
in a qemu VM (cirrus emulation); see also
https://bugzilla.suse.com/show_bug.cgi?id=1118149
---
 src/glx/drisw_glx.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/glx/drisw_glx.c b/src/glx/drisw_glx.c
index 7b99e49f00..d6bebfb292 100644
--- a/src/glx/drisw_glx.c
+++ b/src/glx/drisw_glx.c
@@ -232,7 +232,11 @@ swrastXPutImage(__DRIdrawable * draw, int op,
    ximage->bytes_per_line = stride ? stride : bytes_per_line(w * ximage->bits_per_pixel, 32);
    ximage->data = data;
 
-   if (pdp->shminfo.shmid >= 0) {
+   /* disable Xshm for now since it results in render errors and missing screen refreshes
+      on GNOME3 in a qemu VM (cirrus emulation); see also 
+      https://bugzilla.suse.com/show_bug.cgi?id=1118149
+    */
+   if (0 && pdp->shminfo.shmid >= 0) {
       ximage->width = ximage->bytes_per_line / ((ximage->bits_per_pixel + 7)/ 8);
       ximage->height = h;
       XShmPutImage(dpy, drawable, gc, ximage, srcx, srcy, x, y, w, h, False);
-- 
2.16.4