Mesa (master): i965/fs: Fix implied_mrf_writes for scratch writes

[Jason Ekstrand]

Module: Mesa
Branch: master
Commit: 6ca67f62e885f0e42c0cef2db5c0ae837adfe646
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=6ca67f62e885f0e42c0cef2db5c0ae837adfe646

Author: Jason Ekstrand <jason.ekstrand at intel.com>
Date:   Tue May 19 17:35:29 2015 -0700

i965/fs: Fix implied_mrf_writes for scratch writes

We build the entire message in the generator so all the MRF writes are
implied.

Cc: "10.5 10.6" <mesa-stable at lists.freedesktop.org>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

---

 src/mesa/drivers/dri/i965/brw_fs.cpp |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 9b3186b..42a0d78 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -1050,7 +1050,7 @@ fs_visitor::implied_mrf_writes(fs_inst *inst)
    case FS_OPCODE_VARYING_PULL_CONSTANT_LOAD:
       return inst->mlen;
    case SHADER_OPCODE_GEN4_SCRATCH_WRITE:
-      return 2;
+      return inst->mlen;
    case SHADER_OPCODE_UNTYPED_ATOMIC:
    case SHADER_OPCODE_UNTYPED_SURFACE_READ:
    case SHADER_OPCODE_UNTYPED_SURFACE_WRITE: