[PATCH v4 3/4] vkd3d-shader/ir: Validate source swizzles depending on the dimension.

[Giovanni Mascellani]

From: Giovanni Mascellani

---
 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 632908192..f7b36eeb8 100644
--- a/libs/vkd3d-shader/ir.c
+++ b/libs/vkd3d-shader/ir.c
@@ -1630,6 +1630,10 @@ 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);