Giovanni Mascellani : vkd3d-shader/ir: Validate source swizzles depending on the dimension.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: 15e7711786e9f83e7087200bb9e08795e21b4431
URL:    https://gitlab.winehq.org/wine/vkd3d/-/commit/15e7711786e9f83e7087200bb9e087...

Author: Giovanni Mascellani <gmascellani(a)codeweavers.com>
Date:   Thu Dec 21 15:58:46 2023 +0100

vkd3d-shader/ir: Validate source swizzles depending on the dimension.

---

 libs/vkd3d-shader/ir.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libs/vkd3d-shader/ir.c b/libs/vkd3d-shader/ir.c
index a21af2fe..35a95c2b 100644
--- a/libs/vkd3d-shader/ir.c
+++ b/libs/vkd3d-shader/ir.c
@@ -1679,6 +1679,10 @@ static void vsir_validate_src_param(struct validation_context *ctx,
         validator_error(ctx, VKD3D_SHADER_ERROR_VSIR_INVALID_SWIZZLE, "Source has invalid swizzle %#x.",
                 src->swizzle);
 
+    if (src->reg.dimension != VSIR_DIMENSION_VEC4 && src->swizzle != 0)
+        validator_error(ctx, VKD3D_SHADER_ERROR_VSIR_INVALID_SWIZZLE, "Source of dimension %u has invalid swizzle %#x.",
+                src->reg.dimension, src->swizzle);
+
     if (src->modifiers >= VKD3DSPSM_COUNT)
         validator_error(ctx, VKD3D_SHADER_ERROR_VSIR_INVALID_MODIFIERS, "Source has invalid modifiers %#x.",
                 src->modifiers);