Mesa (master): st/mesa: simplify writemask for emitting fog result

[Brian Paul]

Module: Mesa
Branch: master
Commit: aad2511c6d082aecfe8da0c3e61e2e678c84f7dd
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=aad2511c6d082aecfe8da0c3e61e2e678c84f7dd

Author: Brian Paul <brianp at vmware.com>
Date:   Thu Nov 21 15:07:25 2013 -0700

st/mesa: simplify writemask for emitting fog result

Reviewed-by: José Fonseca <jfonseca at vmware.com>

---

 src/mesa/state_tracker/st_glsl_to_tgsi.cpp |    2 +-
 src/mesa/state_tracker/st_mesa_to_tgsi.c   |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 74b3e5b..ac95968 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -4892,7 +4892,7 @@ st_translate_program(
          if (outputSemanticName[i] == TGSI_SEMANTIC_FOG) {
             /* force register to contain a fog coordinate in the form (F, 0, 0, 1). */
             ureg_MOV(ureg,
-                     ureg_writemask(t->outputs[i], TGSI_WRITEMASK_XYZW & ~TGSI_WRITEMASK_X),
+                     ureg_writemask(t->outputs[i], TGSI_WRITEMASK_YZW),
                      ureg_imm4f(ureg, 0.0f, 0.0f, 0.0f, 1.0f));
             t->outputs[i] = ureg_writemask(t->outputs[i], TGSI_WRITEMASK_X);
 	 }
diff --git a/src/mesa/state_tracker/st_mesa_to_tgsi.c b/src/mesa/state_tracker/st_mesa_to_tgsi.c
index 7d79c62..1c2abc1 100644
--- a/src/mesa/state_tracker/st_mesa_to_tgsi.c
+++ b/src/mesa/state_tracker/st_mesa_to_tgsi.c
@@ -1124,7 +1124,7 @@ st_translate_mesa_program(
          if (outputSemanticName[i] == TGSI_SEMANTIC_FOG) {
             /* force register to contain a fog coordinate in the form (F, 0, 0, 1). */
             ureg_MOV(ureg,
-                     ureg_writemask(t->outputs[i], TGSI_WRITEMASK_XYZW & ~TGSI_WRITEMASK_X),
+                     ureg_writemask(t->outputs[i], TGSI_WRITEMASK_YZW),
                      ureg_imm4f(ureg, 0.0f, 0.0f, 0.0f, 1.0f));
             t->outputs[i] = ureg_writemask(t->outputs[i], TGSI_WRITEMASK_X);
 	 }