From a27b74819ad375e8c0bc88e13f42c951d2b5cd6a Mon Sep 17 00:00:00 2001
From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= <marek.olsak@amd.com>
Date: Fri, 6 Feb 2015 18:00:50 +0100
Subject: [PATCH] radeonsi: small fix in SPI state
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Cc: 10.5 10.4 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
---
 src/gallium/drivers/radeonsi/si_state_shaders.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/radeonsi/si_state_shaders.c b/src/gallium/drivers/radeonsi/si_state_shaders.c
index 27ccc8e5034..dea99ea92b8 100644
--- a/src/gallium/drivers/radeonsi/si_state_shaders.c
+++ b/src/gallium/drivers/radeonsi/si_state_shaders.c
@@ -662,8 +662,10 @@ bcolor:
 		}
 
 		if (j == vsinfo->num_outputs) {
-			/* No corresponding output found, load defaults into input */
-			tmp |= S_028644_OFFSET(0x20);
+			/* No corresponding output found, load defaults into input.
+			 * Don't set any other bits.
+			 * (FLAT_SHADE=1 completely changes behavior) */
+			tmp = S_028644_OFFSET(0x20);
 		}
 
 		si_pm4_set_reg(pm4,
-- 
2.30.2