Mesa (9.1): i965/vs: Put lod parameter in the correct place for Gen4

[Carl Worth]

Module: Mesa
Branch: 9.1
Commit: e6cf672b1af19fe9ef2d8462f9d5a92aa211ed65
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=e6cf672b1af19fe9ef2d8462f9d5a92aa211ed65

Author: Chris Forbes <chrisf at ijw.co.nz>
Date:   Tue Jul 30 16:03:58 2013 +1200

i965/vs: Put lod parameter in the correct place for Gen4

This was never visible before due to the bogus sampler state pointer.
Fixes remaining vertex texturing breakage on Gen4.

Signed-off-by: Chris Forbes <chrisf at ijw.co.nz>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Cc: mesa-stable at lists.freedesktop.org
(cherry picked from commit cace82b0cdd9b93a21adbb5857f1f69ee0a2f925)

---

 src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
index 86f9a33..c270a67 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
@@ -2215,7 +2215,7 @@ vec4_visitor::visit(ir_texture *ir)
 	    }
 	 } else /* intel->gen == 4 */ {
 	    mrf = param_base;
-	    writemask = WRITEMASK_Z;
+	    writemask = WRITEMASK_W;
 	 }
 	 emit(MOV(dst_reg(MRF, mrf, lod_type, writemask), lod));
       } else if (ir->op == ir_txf) {