From 28e80aa0b85aac3ed3d34ee13b6412be4d9d5773 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jos=C3=A9=20Fonseca?= <jfonseca@vmware.com>
Date: Mon, 22 Feb 2010 21:47:07 +0000
Subject: [PATCH] tgsi: Report an error when a destination has an empty
 writemask.

---
 src/gallium/auxiliary/tgsi/tgsi_sanity.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_sanity.c b/src/gallium/auxiliary/tgsi/tgsi_sanity.c
index 91e1b27da12..371f690b295 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_sanity.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_sanity.c
@@ -321,6 +321,9 @@ iter_instruction(
          reg,
          "destination",
          FALSE );
+      if (!inst->Dst[i].Register.WriteMask) {
+         report_error(ctx, "Destination register has empty writemask");
+      }
    }
    for (i = 0; i < inst->Instruction.NumSrcRegs; i++) {
       scan_register *reg = create_scan_register_src(&inst->Src[i]);
-- 
2.30.2