[PATCH vkd3d 2/8] vkd3d-shader: Set xxxx swizzle for scalar registers.

[Józef Kucia]

From: Józef Kucia <jkucia at codeweavers.com>

Mainly for vOutputControlPointID.

Signed-off-by: Józef Kucia <jkucia at codeweavers.com>
---
 libs/vkd3d-shader/dxbc.c | 43 +++++++++++++++++++++-------------------
 1 file changed, 23 insertions(+), 20 deletions(-)

diff --git a/libs/vkd3d-shader/dxbc.c b/libs/vkd3d-shader/dxbc.c
index 5e4babb1e4de..49116681dbab 100644
--- a/libs/vkd3d-shader/dxbc.c
+++ b/libs/vkd3d-shader/dxbc.c
@@ -1511,6 +1511,25 @@ static bool shader_sm4_read_param(struct vkd3d_sm4_data *priv, const DWORD **ptr
     return true;
 }
 
+static bool shader_sm4_is_scalar_register(const struct vkd3d_shader_register *reg)
+{
+    switch (reg->type)
+    {
+        case VKD3DSPR_COVERAGE:
+        case VKD3DSPR_DEPTHOUT:
+        case VKD3DSPR_DEPTHOUTGE:
+        case VKD3DSPR_DEPTHOUTLE:
+        case VKD3DSPR_GSINSTID:
+        case VKD3DSPR_LOCALTHREADINDEX:
+        case VKD3DSPR_OUTPOINTID:
+        case VKD3DSPR_PRIMID:
+        case VKD3DSPR_SAMPLEMASK:
+            return true;
+        default:
+            return false;
+    }
+}
+
 static bool shader_sm4_read_src_param(struct vkd3d_sm4_data *priv, const DWORD **ptr, const DWORD *end,
         enum vkd3d_data_type data_type, struct vkd3d_shader_src_param *src_param)
 {
@@ -1541,7 +1560,10 @@ static bool shader_sm4_read_src_param(struct vkd3d_sm4_data *priv, const DWORD *
         switch (swizzle_type)
         {
             case VKD3D_SM4_SWIZZLE_NONE:
-                src_param->swizzle = VKD3D_NO_SWIZZLE;
+                if (shader_sm4_is_scalar_register(&src_param->reg))
+                    src_param->swizzle = VKD3D_SWIZZLE(VKD3D_SWIZZLE_X, VKD3D_SWIZZLE_X, VKD3D_SWIZZLE_X, VKD3D_SWIZZLE_X);
+                else
+                    src_param->swizzle = VKD3D_NO_SWIZZLE;
                 break;
 
             case VKD3D_SM4_SWIZZLE_SCALAR:
@@ -1562,25 +1584,6 @@ static bool shader_sm4_read_src_param(struct vkd3d_sm4_data *priv, const DWORD *
     return true;
 }
 
-static bool shader_sm4_is_scalar_register(const struct vkd3d_shader_register *reg)
-{
-    switch (reg->type)
-    {
-        case VKD3DSPR_COVERAGE:
-        case VKD3DSPR_DEPTHOUT:
-        case VKD3DSPR_DEPTHOUTGE:
-        case VKD3DSPR_DEPTHOUTLE:
-        case VKD3DSPR_GSINSTID:
-        case VKD3DSPR_LOCALTHREADINDEX:
-        case VKD3DSPR_OUTPOINTID:
-        case VKD3DSPR_PRIMID:
-        case VKD3DSPR_SAMPLEMASK:
-            return true;
-        default:
-            return false;
-    }
-}
-
 static bool shader_sm4_read_dst_param(struct vkd3d_sm4_data *priv, const DWORD **ptr, const DWORD *end,
         enum vkd3d_data_type data_type, struct vkd3d_shader_dst_param *dst_param)
 {
-- 
2.19.2