Mesa (master): glsl: Optimize ir_triop_lrp(x, y, a) with a = 0.0f or 1.0f
Matt Turner
mattst88 at kemper.freedesktop.org
Thu Feb 28 23:21:27 UTC 2013
Module: Mesa
Branch: master
Commit: af2c64063e7fb31b243d63b77e09cd19c3819d72
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=af2c64063e7fb31b243d63b77e09cd19c3819d72
Author: Matt Turner <mattst88 at gmail.com>
Date: Fri Feb 15 17:51:46 2013 -0800
glsl: Optimize ir_triop_lrp(x, y, a) with a = 0.0f or 1.0f
Reviewed-by: Eric Anholt <eric at anholt.net>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
---
src/glsl/opt_algebraic.cpp | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp
index 44a21b6..70e016d 100644
--- a/src/glsl/opt_algebraic.cpp
+++ b/src/glsl/opt_algebraic.cpp
@@ -415,6 +415,17 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
break;
+ case ir_triop_lrp:
+ /* Operands are (x, y, a). */
+ if (is_vec_zero(op_const[2])) {
+ this->progress = true;
+ return swizzle_if_required(ir, ir->operands[0]);
+ } else if (is_vec_one(op_const[2])) {
+ this->progress = true;
+ return swizzle_if_required(ir, ir->operands[1]);
+ }
+ break;
+
default:
break;
}
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