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| author | Elie Tournier <tournier.elie@gmail.com> | 2017-08-08 14:12:35 +0100 |
|---|---|---|
| committer | Matt Turner <mattst88@gmail.com> | 2019-01-09 16:42:40 -0800 |
| commit | c802cdde9df1295fe0d6d6a3dbf4151f46070d19 (patch) | |
| tree | eba40037d57b9d4deaf1cd6c345286f1692e8af3 /src/compiler/glsl | |
| parent | eac66f024865640a328803b024d9bf025c408e49 (diff) | |
| download | mesa-c802cdde9df1295fe0d6d6a3dbf4151f46070d19.tar.gz mesa-c802cdde9df1295fe0d6d6a3dbf4151f46070d19.tar.bz2 mesa-c802cdde9df1295fe0d6d6a3dbf4151f46070d19.zip | |
glsl: Add "built-in" function to do sign(fp64)
v2: use mix.
Signed-off-by: Elie Tournier <elie.tournier@collabora.com>
Diffstat (limited to 'src/compiler/glsl')
| -rw-r--r-- | src/compiler/glsl/float64.glsl | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/compiler/glsl/float64.glsl b/src/compiler/glsl/float64.glsl index 5f873319b42..31aae3fca22 100644 --- a/src/compiler/glsl/float64.glsl +++ b/src/compiler/glsl/float64.glsl @@ -93,3 +93,13 @@ __fneg64(uint64_t __a) a.y = mix(t, a.y, __is_nan(__a)); return packUint2x32(a); } + +uint64_t +__fsign64(uint64_t __a) +{ + uvec2 a = unpackUint2x32(__a); + uvec2 retval; + retval.x = 0u; + retval.y = mix((a.y & 0x80000000u) | 0x3FF00000u, 0u, (a.y << 1 | a.x) == 0u); + return packUint2x32(retval); +} |