From: Ilia Mirkin <imirkin@alum.mit.edu>
Date: Sat, 27 Aug 2016 23:51:29 +0000 (-0400)
Subject: nouveau: always enable at least one RC
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=357d8261f1e9fd93105dd704c94828582dc02043;p=mesa.git

nouveau: always enable at least one RC

Experimentally, this is required for glxgears and others to display the
proper colors. This is also what the code used to do before the
referenced commit.

Fixes: c703658b396 (mesa: Drop _EnabledUnits.)
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: mesa-stable@lists.freedesktop.org
---

diff --git a/src/mesa/drivers/dri/nouveau/nv20_state_frag.c b/src/mesa/drivers/dri/nouveau/nv20_state_frag.c
index 492ecdc42fa..2c5c2dbe89e 100644
--- a/src/mesa/drivers/dri/nouveau/nv20_state_frag.c
+++ b/src/mesa/drivers/dri/nouveau/nv20_state_frag.c
@@ -67,5 +67,5 @@ nv20_emit_frag(struct gl_context *ctx, int emit)
 	PUSH_DATA (push, in >> 32);
 
 	BEGIN_NV04(push, NV20_3D(RC_ENABLE), 1);
-	PUSH_DATA (push, n);
+	PUSH_DATA (push, MAX2(1, n));
 }