From 400c39513abce7208c9f0dbe8378863061b6662e Mon Sep 17 00:00:00 2001
From: Jan Beich <jbeich@FreeBSD.org>
Date: Wed, 16 Dec 2020 19:12:22 +0000
Subject: [PATCH] graphics/mesa-dri: exclude buffer age on iris under kwin

PR:		251836
Approved by:	?
---
 graphics/mesa-dri/Makefile                      |  1 +
 .../files/patch-src_util_00-mesa-defaults.conf  | 17 +++++++++++++++++
 2 files changed, 18 insertions(+)
 create mode 100644 graphics/mesa-dri/files/patch-src_util_00-mesa-defaults.conf

diff --git a/graphics/mesa-dri/Makefile b/graphics/mesa-dri/Makefile
index 57798fcf8358..a74bae6397d1 100644
--- a/graphics/mesa-dri/Makefile
+++ b/graphics/mesa-dri/Makefile
@@ -3,6 +3,7 @@
 
 PORTNAME=	mesa-dri
 PORTVERSION=	${MESAVERSION}
+PORTREVISION=	1
 CATEGORIES=	graphics
 
 COMMENT=	OpenGL hardware acceleration drivers for DRI2+
diff --git a/graphics/mesa-dri/files/patch-src_util_00-mesa-defaults.conf b/graphics/mesa-dri/files/patch-src_util_00-mesa-defaults.conf
new file mode 100644
index 000000000000..302b59055d37
--- /dev/null
+++ b/graphics/mesa-dri/files/patch-src_util_00-mesa-defaults.conf
@@ -0,0 +1,17 @@
+Exclude features known to cause issues on FreeBSD
+
+--- src/util/00-mesa-defaults.conf.orig	2020-11-23 19:04:03 UTC
++++ src/util/00-mesa-defaults.conf
+@@ -621,6 +621,12 @@ TODO: document the other workarounds.
+             <option name="glx_disable_oml_sync_control" value="true" />
+         </application>
+     </device>
++    <device driver="iris">
++        <application name="kwin_x11" executable="kwin_x11">
++            <!-- https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=251836 -->
++            <option name="glx_disable_ext_buffer_age" value="true" />
++        </application>
++    </device>
+     <device driver="radeonsi">
+         <application name="American Truck Simulator" executable="amtrucks">
+             <option name="radeonsi_zerovram" value="true" />