Giovanni Mascellani : vkd3d-shader/d3dbc: Override the write mask when the destination is not vec4.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: df2ae56de8a99729bf37673fd6fe952a2289e324
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/df2ae56de8a99729bf37673fd6fe95...

Author: Giovanni Mascellani <gmascellani(a)codeweavers.com>
Date:   Fri Dec 22 14:25:44 2023 +0100

vkd3d-shader/d3dbc: Override the write mask when the destination is not vec4.

---

 libs/vkd3d-shader/d3dbc.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/libs/vkd3d-shader/d3dbc.c b/libs/vkd3d-shader/d3dbc.c
index 67f9e280..8fec1e63 100644
--- a/libs/vkd3d-shader/d3dbc.c
+++ b/libs/vkd3d-shader/d3dbc.c
@@ -482,9 +482,23 @@ static void shader_sm1_parse_dst_param(uint32_t param, const struct vkd3d_shader
         dst->reg.dimension = VSIR_DIMENSION_SCALAR;
     else
         dst->reg.dimension = VSIR_DIMENSION_VEC4;
-    dst->write_mask = (param & VKD3D_SM1_WRITEMASK_MASK) >> VKD3D_SM1_WRITEMASK_SHIFT;
     dst->modifiers = (param & VKD3D_SM1_DST_MODIFIER_MASK) >> VKD3D_SM1_DST_MODIFIER_SHIFT;
     dst->shift = (param & VKD3D_SM1_DSTSHIFT_MASK) >> VKD3D_SM1_DSTSHIFT_SHIFT;
+
+    switch (dst->reg.dimension)
+    {
+        case VSIR_DIMENSION_SCALAR:
+            dst->write_mask = VKD3DSP_WRITEMASK_0;
+            break;
+
+        case VSIR_DIMENSION_VEC4:
+            dst->write_mask = (param & VKD3D_SM1_WRITEMASK_MASK) >> VKD3D_SM1_WRITEMASK_SHIFT;
+            break;
+
+        default:
+            dst->write_mask = 0;
+            break;
+    }
 }
 
 static struct signature_element *find_signature_element(const struct shader_signature *signature,