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-rw-r--r--src/mesa/shader/slang/slang_codegen.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index cc6d71478d..712f5975dc 100644
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -213,7 +213,14 @@ _slang_sizeof_type_specifier(const slang_type_specifier *spec)
break;
case SLANG_SPEC_STRUCT:
sz = _slang_field_offset(spec, 0); /* special use */
- if (sz > 4) {
+ if (sz == 1) {
+ /* 1-float structs are actually troublesome to deal with since they
+ * might get placed at R.x, R.y, R.z or R.z. Return size=2 to
+ * ensure the object is placed at R.x
+ */
+ sz = 2;
+ }
+ else if (sz > 4) {
sz = (sz + 3) & ~0x3; /* round up to multiple of four */
}
break;