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-rw-r--r--src/glsl/nir/nir.h1
-rw-r--r--src/glsl/nir/nir_opt_algebraic.py3
2 files changed, 3 insertions, 1 deletions
diff --git a/src/glsl/nir/nir.h b/src/glsl/nir/nir.h
index 7be1abb5743..f46ec151f6d 100644
--- a/src/glsl/nir/nir.h
+++ b/src/glsl/nir/nir.h
@@ -1329,6 +1329,7 @@ typedef struct nir_function {
typedef struct nir_shader_compiler_options {
bool lower_ffma;
bool lower_fpow;
+ bool lower_fsat;
bool lower_fsqrt;
/** lowers fneg and ineg to fsub and isub. */
bool lower_negate;
diff --git a/src/glsl/nir/nir_opt_algebraic.py b/src/glsl/nir/nir_opt_algebraic.py
index 83a02b6dad6..c7cb651fbb4 100644
--- a/src/glsl/nir/nir_opt_algebraic.py
+++ b/src/glsl/nir/nir_opt_algebraic.py
@@ -85,7 +85,8 @@ optimizations = [
(('fge', ('fneg', ('fabs', a)), 0.0), ('feq', a, 0.0)),
(('bcsel', ('flt', a, b), a, b), ('fmin', a, b)),
(('bcsel', ('flt', a, b), b, a), ('fmax', a, b)),
- (('fmin', ('fmax', a, 0.0), 1.0), ('fsat', a)),
+ (('fmin', ('fmax', a, 0.0), 1.0), ('fsat', a), '!options->lower_fsat'),
+ (('fsat', a), ('fmin', ('fmax', a, 0.0), 1.0), 'options->lower_fsat'),
# Comparison with the same args. Note that these are not done for
# the float versions because NaN always returns false on float
# inequalities.