Mesa (mesa_7_7_branch): tgsi: Report an error when a destination has an empty writemask.

[Jose Fonseca]

Module: Mesa
Branch: mesa_7_7_branch
Commit: 9bef69782d90c21dc014aa85fa353de80e6932ed
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=9bef69782d90c21dc014aa85fa353de80e6932ed

Author: José Fonseca <jfonseca at vmware.com>
Date:   Mon Feb 22 17:57:59 2010 +0000

tgsi: Report an error when a destination has an empty writemask.

---

 src/gallium/auxiliary/tgsi/tgsi_sanity.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_sanity.c b/src/gallium/auxiliary/tgsi/tgsi_sanity.c
index 36e27ea..a145725 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_sanity.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_sanity.c
@@ -216,6 +216,9 @@ iter_instruction(
          inst->FullDstRegisters[i].DstRegister.Index,
          "destination",
          FALSE );
+      if (!inst->FullDstRegisters[i].DstRegister.WriteMask) {
+         report_error(ctx, "Destination register has empty writemask");
+      }
    }
    for (i = 0; i < inst->Instruction.NumSrcRegs; i++) {
       check_register_usage(