From: Rob Clark <robcl...@freedesktop.org>
Signed-off-by: Rob Clark <robcl...@freedesktop.org>
---
src/glsl/nir/nir.h | 3 +++
src/glsl/nir/nir_opt_algebraic.py | 1 +
2 files changed, 4 insertions(+)
diff --git a/src/glsl/nir/nir.h b/src/glsl/nir/nir.h
index f0acd75..284fccd 100644
--- a/src/glsl/nir/nir.h
+++ b/src/glsl/nir/nir.h
@@ -1440,6 +1440,9 @@ typedef struct nir_shader_compiler_options {
*/
bool fdot_replicates;
+ /** lowers ffract to fsub+ffloor: */
+ bool lower_ffract;
+
/**
* Does the driver support real 32-bit integers? (Otherwise, integers
* are simulated by floats.)
diff --git a/src/glsl/nir/nir_opt_algebraic.py
b/src/glsl/nir/nir_opt_algebraic.py
index acc3b04..43558a5 100644
--- a/src/glsl/nir/nir_opt_algebraic.py
+++ b/src/glsl/nir/nir_opt_algebraic.py
@@ -76,6 +76,7 @@ optimizations = [
(('flrp', a, a, b), a),
(('flrp', 0.0, a, b), ('fmul', a, b)),
(('flrp', a, b, c), ('fadd', ('fmul', c, ('fsub', b, a)), a),
'options->lower_flrp'),
+ (('ffract', a), ('fsub', a, ('ffloor', a)), 'options->lower_ffract'),
(('fadd', ('fmul', a, ('fadd', 1.0, ('fneg', c))), ('fmul', b, c)),
('flrp', a, b, c), '!options->lower_flrp'),
(('fadd', a, ('fmul', c, ('fadd', b, ('fneg', a)))), ('flrp', a, b, c),
'!options->lower_flrp'),
(('ffma', a, b, c), ('fadd', ('fmul', a, b), c), 'options->lower_ffma'),
--
2.4.3
_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/mesa-dev
