Mesa (master): glsl_to_tgsi: use TGSI_OPCODE_CEIL for ir_unop_ceil

[Christoph Bumiller]

Module: Mesa
Branch: master
Commit: f7665ca4fc2a7bba8378d44d38059fc5dd536223
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f7665ca4fc2a7bba8378d44d38059fc5dd536223

Author: Christoph Bumiller <e0425955 at student.tuwien.ac.at>
Date:   Sat May  5 14:38:09 2012 +0200

glsl_to_tgsi: use TGSI_OPCODE_CEIL for ir_unop_ceil

The implementation using FLR was buggy, the second negation could
get lost.

---

 src/mesa/state_tracker/st_glsl_to_tgsi.cpp |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 9e68deb..eecabb3 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -1775,9 +1775,7 @@ glsl_to_tgsi_visitor::visit(ir_expression *ir)
       emit(ir, TGSI_OPCODE_TRUNC, result_dst, op[0]);
       break;
    case ir_unop_ceil:
-      op[0].negate = ~op[0].negate;
-      emit(ir, TGSI_OPCODE_FLR, result_dst, op[0]);
-      result_src.negate = ~result_src.negate;
+      emit(ir, TGSI_OPCODE_CEIL, result_dst, op[0]);
       break;
    case ir_unop_floor:
       emit(ir, TGSI_OPCODE_FLR, result_dst, op[0]);