Mesa (10.4): glsl: Don't optimize min/ max into saturate when EmitNoSat is set
Emil Velikov
evelikov at kemper.freedesktop.org
Wed Mar 4 02:02:53 UTC 2015
Module: Mesa
Branch: 10.4
Commit: d880aa573ce4d39cd6c2b7445b757414360a432c
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=d880aa573ce4d39cd6c2b7445b757414360a432c
Author: Abdiel Janulgue <abdiel.janulgue at linux.intel.com>
Date: Mon Dec 8 13:31:29 2014 +0200
glsl: Don't optimize min/max into saturate when EmitNoSat is set
v3: Fix multi-line comment format (Ian)
Reviewed-by: Matt Turner <mattst88 at gmail.com>
Signed-off-by: Abdiel Janulgue <abdiel.janulgue at linux.intel.com>
(cherry picked from commit 4ea8c8d56ca8d6b4af36e7750186821b4973355a)
---
src/glsl/opt_algebraic.cpp | 2 +-
src/mesa/main/mtypes.h | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp
index 33e94c4..87bb875 100644
--- a/src/glsl/opt_algebraic.cpp
+++ b/src/glsl/opt_algebraic.cpp
@@ -679,7 +679,7 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
case ir_binop_min:
case ir_binop_max:
- if (ir->type->base_type != GLSL_TYPE_FLOAT)
+ if (ir->type->base_type != GLSL_TYPE_FLOAT || options->EmitNoSat)
break;
/* Replace min(max) operations and its commutative combinations with
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 7389baa..cee11a3 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2990,6 +2990,7 @@ struct gl_shader_compiler_options
GLboolean EmitNoMainReturn; /**< Emit CONT/RET opcodes? */
GLboolean EmitNoNoise; /**< Emit NOISE opcodes? */
GLboolean EmitNoPow; /**< Emit POW opcodes? */
+ GLboolean EmitNoSat; /**< Emit SAT opcodes? */
GLboolean LowerClipDistance; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
/**
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