From: Tim Evans <t.evans@aranz.com>
Date: Mon, 21 Jun 2010 23:18:30 +0000 (-0600)
Subject: swrast: fix incorrect specular highlights on backfaces
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=64e32ffb6e7d324dcb46a18975db0c58719c51e7;p=mesa.git

swrast: fix incorrect specular highlights on backfaces

See bug 28577 for details.
NOTE: this is a candidate for the 7.8 branch.

Signed-off-by: Brian Paul <brianp@vmware.com>
---

diff --git a/src/mesa/swrast_setup/ss_triangle.c b/src/mesa/swrast_setup/ss_triangle.c
index bad0d819460..f22bc52f0a8 100644
--- a/src/mesa/swrast_setup/ss_triangle.c
+++ b/src/mesa/swrast_setup/ss_triangle.c
@@ -159,7 +159,7 @@ static void _swsetup_render_tri(GLcontext *ctx,
 }
 
 #define SS_COLOR(a,b) UNCLAMPED_FLOAT_TO_RGBA_CHAN(a,b)
-#define SS_SPEC(a,b) UNCLAMPED_FLOAT_TO_RGB_CHAN(a,b)
+#define SS_SPEC(a,b) COPY_4V(a,b)
 #define SS_IND(a,b) (a = b)
 
 #define IND (0)