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| author | Kristian H. Kristensen <hoegsberg@google.com> | 2020-01-16 14:56:53 -0800 |
|---|---|---|
| committer | Marge Bot <eric+marge@anholt.net> | 2020-03-09 16:31:08 +0000 |
| commit | 4068d6baff78b203477abbd3c3453a0058ecee56 (patch) | |
| tree | daed64b52d35c24211cef344f97604d409c02ccc /src/util/half_float.h | |
| parent | b75a166e6866c4ab3f2c525763a25c9b7ab9fb56 (diff) | |
| download | mesa-4068d6baff78b203477abbd3c3453a0058ecee56.tar.gz mesa-4068d6baff78b203477abbd3c3453a0058ecee56.tar.bz2 mesa-4068d6baff78b203477abbd3c3453a0058ecee56.zip | |
glsl: Add ir_constant constructor for fp16
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3929>
Diffstat (limited to 'src/util/half_float.h')
| -rw-r--r-- | src/util/half_float.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/util/half_float.h b/src/util/half_float.h index 84112e57bd4..c9fad9a9400 100644 --- a/src/util/half_float.h +++ b/src/util/half_float.h @@ -33,8 +33,8 @@ extern "C" { #endif -#define FP16_ONE 0x3C00 -#define FP16_ZERO 0 +#define FP16_ONE ((uint16_t) 0x3c00) +#define FP16_ZERO ((uint16_t) 0) uint16_t _mesa_float_to_half(float val); float _mesa_half_to_float(uint16_t val); @@ -63,6 +63,22 @@ _mesa_half_is_negative(uint16_t h) #ifdef __cplusplus + +/* Helper class for disambiguating fp16 from uint16_t in C++ overloads */ + +struct float16_t { + uint16_t bits; + float16_t(float f) : bits(_mesa_float_to_half(f)) {} + float16_t(double d) : bits(_mesa_float_to_half(d)) {} + float16_t(uint16_t bits) : bits(bits) {} + static float16_t one() { return float16_t(FP16_ONE); } + static float16_t zero() { return float16_t(FP16_ZERO); } +}; + +#endif + + +#ifdef __cplusplus } /* extern C */ #endif |