Surprisingly, this helps one vertex shader in 3DMMES.
Signed-off-by: Kenneth Graunke <[email protected]>
---
src/glsl/opt_algebraic.cpp | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp
index 05a5899..5e885f7 100644
--- a/src/glsl/opt_algebraic.cpp
+++ b/src/glsl/opt_algebraic.cpp
@@ -416,6 +416,12 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
}
break;
+ case ir_binop_pow:
+ /* 1^x == 1 */
+ if (is_vec_one(op_const[0]))
+ return op_const[0];
+ break;
+
case ir_unop_rcp:
if (op_expr[0] && op_expr[0]->operation == ir_unop_rcp)
return op_expr[0]->operands[0];
--
1.8.5.2
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