[Mesa-dev] [PATCH 10/12] nir: Add lowering support for unpacking opcodes.
Matt Turner
mattst88 at gmail.com
Mon Jan 25 15:18:10 PST 2016
---
src/glsl/nir/nir.h | 4 ++++
src/glsl/nir/nir_opt_algebraic.py | 28 ++++++++++++++++++++++++++++
2 files changed, 32 insertions(+)
diff --git a/src/glsl/nir/nir.h b/src/glsl/nir/nir.h
index bbd5b1a..3b90b51 100644
--- a/src/glsl/nir/nir.h
+++ b/src/glsl/nir/nir.h
@@ -1474,6 +1474,10 @@ typedef struct nir_shader_compiler_options {
bool lower_pack_unorm_4x8;
bool lower_pack_snorm_4x8;
bool lower_unpack_half_2x16;
+ bool lower_unpack_unorm_2x16;
+ bool lower_unpack_snorm_2x16;
+ bool lower_unpack_unorm_4x8;
+ bool lower_unpack_snorm_4x8;
bool lower_extract_byte;
bool lower_extract_word;
diff --git a/src/glsl/nir/nir_opt_algebraic.py b/src/glsl/nir/nir_opt_algebraic.py
index 56b0f5e..a0d6c07 100644
--- a/src/glsl/nir/nir_opt_algebraic.py
+++ b/src/glsl/nir/nir_opt_algebraic.py
@@ -278,6 +278,34 @@ optimizations = [
('pack_uvec4_to_uint',
('f2i', ('fround_even', ('fmul', ('fmin', 1.0, ('fmax', -1.0, 'v')), 127.0)))),
'options->lower_pack_snorm_4x8'),
+
+ (('unpack_unorm_2x16', 'v'),
+ ('fdiv', ('u2f', ('vec4', ('extract_uword', 'v', 0),
+ ('extract_uword', 'v', 1), 0, 0)),
+ 65535.0),
+ 'options->lower_unpack_unorm_2x16'),
+
+ (('unpack_unorm_4x8', 'v'),
+ ('fdiv', ('u2f', ('vec4', ('extract_ubyte', 'v', 0),
+ ('extract_ubyte', 'v', 1),
+ ('extract_ubyte', 'v', 2),
+ ('extract_ubyte', 'v', 3))),
+ 255.0),
+ 'options->lower_unpack_unorm_4x8'),
+
+ (('unpack_snorm_2x16', 'v'),
+ ('fmin', 1.0, ('fmax', -1.0, ('fdiv', ('i2f', ('vec4', ('extract_iword', 'v', 0),
+ ('extract_iword', 'v', 1), 0, 0)),
+ 32767.0))),
+ 'options->lower_unpack_snorm_2x16'),
+
+ (('unpack_snorm_4x8', 'v'),
+ ('fmin', 1.0, ('fmax', -1.0, ('fdiv', ('i2f', ('vec4', ('extract_ibyte', 'v', 0),
+ ('extract_ibyte', 'v', 1),
+ ('extract_ibyte', 'v', 2),
+ ('extract_ibyte', 'v', 3))),
+ 127.0))),
+ 'options->lower_unpack_snorm_4x8'),
]
# Add optimizations to handle the case where the result of a ternary is
--
2.4.10
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