Mesa (master): st/nine: Fix support for ps 1.4 dw and dz modifiers

[Axel Davy]

Module: Mesa
Branch: master
Commit: 442780ea373cbea7d138e9cfa8c4857bb8118b3a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=442780ea373cbea7d138e9cfa8c4857bb8118b3a

Author: Axel Davy <axel.davy at ens.fr>
Date:   Sun Mar 26 22:57:15 2017 +0200

st/nine: Fix support for ps 1.4 dw and dz modifiers

RCP was used incorrectly to support NINED3DSPSM_DW and
NINED3DSPSM_DZ. src.x was used as input instead of src.w
or src.z.

Fixes: https://github.com/iXit/Mesa-3D/issues/271

Signed-off-by: Axel Davy <axel.davy at ens.fr>
Tested-by: Dieter Nützel <Dieter at nuetzel-hh.de>

---

 src/gallium/state_trackers/nine/nine_shader.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/gallium/state_trackers/nine/nine_shader.c b/src/gallium/state_trackers/nine/nine_shader.c
index 6dcd97603d..40fb6be88f 100644
--- a/src/gallium/state_trackers/nine/nine_shader.c
+++ b/src/gallium/state_trackers/nine/nine_shader.c
@@ -1116,14 +1116,14 @@ tx_src_param(struct shader_translator *tx, const struct sm1_src_param *param)
     case NINED3DSPSM_DW:
         tmp = tx_scratch(tx);
         /* NOTE: app is not allowed to read w with this modifier */
-        ureg_RCP(ureg, ureg_writemask(tmp, NINED3DSP_WRITEMASK_3), src);
+        ureg_RCP(ureg, ureg_writemask(tmp, NINED3DSP_WRITEMASK_3), ureg_scalar(src, TGSI_SWIZZLE_W));
         ureg_MUL(ureg, tmp, src, ureg_swizzle(ureg_src(tmp), NINE_SWIZZLE4(W,W,W,W)));
         src = ureg_src(tmp);
         break;
     case NINED3DSPSM_DZ:
         tmp = tx_scratch(tx);
         /* NOTE: app is not allowed to read z with this modifier */
-        ureg_RCP(ureg, ureg_writemask(tmp, NINED3DSP_WRITEMASK_2), src);
+        ureg_RCP(ureg, ureg_writemask(tmp, NINED3DSP_WRITEMASK_2), ureg_scalar(src, TGSI_SWIZZLE_Z));
         ureg_MUL(ureg, tmp, src, ureg_swizzle(ureg_src(tmp), NINE_SWIZZLE4(Z,Z,Z,Z)));
         src = ureg_src(tmp);
         break;