From 85638273f23338d06776cdb7bb422440f690038a Mon Sep 17 00:00:00 2001
From: Olivier Fourdan <ofourdan@redhat.com>
Date: Tue, 30 Mar 2021 08:48:25 +0200
Subject: [PATCH xserver 08/27] glamor: Dump backtrace on GL error
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Currrently, when a GL error is triggered, glamor would log the error
which may not be sufficient to trace it back to the cause of the error.

Also dump the backtrace which may give more information as to where the
error comes from.

Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Martin Peres <martin.peres@mupuf.org>
Reviewed-by: Michel Dänzer <mdaenzer@redhat.com>
https://gitlab.freedesktop.org/xorg/xserver/-/issues/1156
(cherry picked from commit 3b265c59a6456f6e4abfb9e1694237bc56f1776a)
---
 glamor/glamor.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/glamor/glamor.c b/glamor/glamor.c
index 3baef4b9f..b8406f42d 100644
--- a/glamor/glamor.c
+++ b/glamor/glamor.c
@@ -414,6 +414,7 @@ glamor_debug_output_callback(GLenum source,
 
     LogMessageVerb(X_ERROR, 0, "glamor%d: GL error: %*s\n",
                screen->myNum, length, message);
+    xorg_backtrace();
 }
 
 /**
-- 
2.31.1