Mesa (master): tgsi: remove special-case code for fragment position

[Brian Paul]

Module: Mesa
Branch: master
Commit: cea2b8d65609756fed46f3904db8a6945f0dd769
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=cea2b8d65609756fed46f3904db8a6945f0dd769

Author: Brian Paul <brianp at vmware.com>
Date:   Fri Feb  5 09:42:00 2010 -0700

tgsi: remove special-case code for fragment position

Since the origin_lower_left / pixel_center_origin changes, we need
to use the fragcoord info that's set up in setup_fragcoord_coeff().
The code in exec_declaration() was clobbering the the interpolated
fragment position.

Fixes progs/glsl/fragcoord.c demo.

---

 src/gallium/auxiliary/tgsi/tgsi_exec.c |    8 +-------
 1 files changed, 1 insertions(+), 7 deletions(-)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index f7a1bb7..2624223 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -1761,13 +1761,7 @@ exec_declaration(struct tgsi_exec_machine *mach,
          last = decl->Range.Last;
          mask = decl->Declaration.UsageMask;
 
-         if (decl->Semantic.Name == TGSI_SEMANTIC_POSITION) {
-            assert(decl->Semantic.Index == 0);
-            assert(first == last);
-            assert(mask == TGSI_WRITEMASK_XYZW);
-
-            mach->Inputs[first] = mach->QuadPos;
-         } else if (decl->Semantic.Name == TGSI_SEMANTIC_FACE) {
+         if (decl->Semantic.Name == TGSI_SEMANTIC_FACE) {
             uint i;
 
             assert(decl->Semantic.Index == 0);