diff options
| author | Matt Turner <[email protected]> | 2015-03-26 10:16:24 -0700 |
|---|---|---|
| committer | Matt Turner <[email protected]> | 2015-04-01 13:43:57 -0700 |
| commit | 8a6ae384b2ae95f047e9d48a5a4c11002ffdd814 (patch) | |
| tree | 258202d011e9c1a02f85ca60efa1e3c325deb41d | |
| parent | e26783d4459583790e50e1f59eb2507f618695c6 (diff) | |
nir: Add identities for the exponential function.
No changes in shader-db.
Reviewed-by: Eric Anholt <[email protected]>
| -rw-r--r-- | src/glsl/nir/nir_opt_algebraic.py | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/glsl/nir/nir_opt_algebraic.py b/src/glsl/nir/nir_opt_algebraic.py index 5b84a4e1cd8..db2fe037206 100644 --- a/src/glsl/nir/nir_opt_algebraic.py +++ b/src/glsl/nir/nir_opt_algebraic.py @@ -139,6 +139,12 @@ optimizations = [ (('fpow', a, 1.0), a), (('fpow', a, 2.0), ('fmul', a, a)), (('fpow', 2.0, a), ('fexp2', a)), + (('fsqrt', ('fexp2', a)), ('fexp2', ('fmul', 0.5, a))), + (('fsqrt', ('fexp', a)), ('fexp', ('fmul', 0.5, a))), + (('frcp', ('fexp2', a)), ('fexp2', ('fneg', a))), + (('frcp', ('fexp', a)), ('fexp', ('fneg', a))), + (('frsq', ('fexp2', a)), ('fexp2', ('fmul', -0.5, a))), + (('frsq', ('fexp', a)), ('fexp', ('fmul', -0.5, a))), # Division and reciprocal (('fdiv', 1.0, a), ('frcp', a)), (('frcp', ('frcp', a)), a), |