From 012b6fbe632e190138f864ae4c6c6abe4c0ee81a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tapani=20P=C3=A4lli?= <tapani.palli@intel.com>
Date: Tue, 12 Dec 2023 10:40:38 +0200
Subject: [PATCH] drirc: setup anv_assume_full_subgroups=16 for UnrealEngine5.1
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We set max subgroup size as 16 for 'UnrealEngine5.1', this improves a
customer benchmark by 50% on A750.

Cc: mesa-stable
Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26385>
---
 src/util/00-mesa-defaults.conf | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/util/00-mesa-defaults.conf b/src/util/00-mesa-defaults.conf
index 2a8be406657..148e756221c 100644
--- a/src/util/00-mesa-defaults.conf
+++ b/src/util/00-mesa-defaults.conf
@@ -1202,6 +1202,7 @@ TODO: document the other workarounds.
         <!-- Disable FCV optimization for Unreal Engine 5.1 workloads. -->
         <engine engine_name_match="UnrealEngine5.1">
             <option name="anv_disable_fcv" value="true" />
+            <option name="anv_assume_full_subgroups" value="16" />
         </engine>
     </device>
     <device driver="dzn">