From: Xiang, Haihao <haihao.xiang@intel.com>
Date: Fri, 15 Feb 2008 08:13:11 +0000 (+0800)
Subject: i965: don't swizzle fogcoord if FogOption is FOG_NONE.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=83068115e2104b1880431ada96fa37e632149a86;p=mesa.git

i965: don't swizzle fogcoord if FogOption is FOG_NONE.
fix #10788 issue on 965.
---

diff --git a/src/mesa/drivers/dri/i965/brw_vs_tnl.c b/src/mesa/drivers/dri/i965/brw_vs_tnl.c
index b8231fc1d2f..d58fd4c0da2 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_tnl.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_tnl.c
@@ -1172,6 +1172,11 @@ static void build_fog( struct tnl_program *p )
    }
    else {
       input = swizzle1(register_input(p, VERT_ATTRIB_FOG), X);
+      if (p->state->fog_option &&
+	  p->state->tnl_do_vertex_fog)
+	  input = swizzle1(register_input(p, VERT_ATTRIB_FOG), X);
+      else
+	  input = register_input(p, VERT_ATTRIB_FOG);
    }
 
    if (p->state->fog_option &&