From: Marek Olšák <marek.ol...@amd.com>
This bug is uncovered by glsl/lower_if_to_cond_assign.
I don't know if it can be reproduced in any other way.
Cc: <mesa-sta...@lists.freedesktop.org>
---
src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 76656f5..0b7feb7 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -1958,12 +1958,14 @@ glsl_to_tgsi_visitor::visit_expression(ir_expression*
ir, st_src_reg *op)
emit_asm(ir, TGSI_OPCODE_TRUNC, result_dst, op[0]);
break;
case ir_unop_bitcast_f2i:
- result_src = op[0];
- result_src.type = GLSL_TYPE_INT;
- break;
case ir_unop_bitcast_f2u:
- result_src = op[0];
- result_src.type = GLSL_TYPE_UINT;
+ /* Make sure we don't propagate the negate modifier to integer opcodes.
*/
+ if (op[0].negate)
+ emit_asm(ir, TGSI_OPCODE_MOV, result_dst, op[0]);
+ else
+ result_src = op[0];
+ result_src.type = ir->operation == ir_unop_bitcast_f2i ? GLSL_TYPE_INT :
+ GLSL_TYPE_UINT;
break;
case ir_unop_bitcast_i2f:
case ir_unop_bitcast_u2f:
--
2.7.4
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