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glsl: Implement saturate as ir_unop_saturate

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Now that we have the ir_unop_saturate implemented as a single
instruction, generate the correct simplified expression.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Signed-off-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
This commit is contained in:
Abdiel Janulgue 2014-06-20 16:55:03 -07:00
parent cb621166dc
commit cbd0d643a3
1 changed files with 1 additions and 5 deletions
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6
src/glsl/ir_builder.cpp
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@ -271,11 +271,7 @@ clamp(operand a, operand b, operand c)
ir_expression *
saturate(operand a)
{
void *mem_ctx = ralloc_parent(a.val);
return expr(ir_binop_max,
expr(ir_binop_min, a, new(mem_ctx) ir_constant(1.0f)),
new(mem_ctx) ir_constant(0.0f));
return expr(ir_unop_saturate, a);
}
ir_expression *