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glsl_to_tgsi: use TGSI_OPCODE_CEIL for ir_unop_ceil

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The implementation using FLR was buggy, the second negation could
get lost.
This commit is contained in:
Christoph Bumiller
2012-05-05 14:38:09 +02:00
parent 6ae12bac59
commit f7665ca4fc
1 changed files with 1 additions and 3 deletions
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src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+1 -3
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@@ -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]);