diff options
| author | Kevin Strasser <kevin.strasser@intel.com> | 2019-04-05 13:14:03 -0700 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2019-04-18 22:17:09 +0300 |
| commit | 99cc81472c278fdf1eb55143779378b45c79c33f (patch) | |
| tree | 396a7955aa934922a5173658b7fbd581f39473d9 /lib/igt_x86.c | |
| parent | 0dc1d6e4d4305a62c64242ec65709e44f5036cf4 (diff) | |
lib: Add halffloat implementation
Probe for and make an API available for tests to use f16c intrinsics to
generate needed fp16 pixel data.
Also import a pure c fp32 <-> fp16 conversion implementation from Mesa
18.3.4, which will act as a fallback when f16c is unavailable.
rfc2:
- Change API to reduce number of function calls (Maarten)
v1:
- Move pragma so AVX code isn't emitted for fallbacks (Ville)
- Change edx to ecx (Ville)
Signed-off-by: Kevin Strasser <kevin.strasser@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Diffstat (limited to 'lib/igt_x86.c')
| -rw-r--r-- | lib/igt_x86.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/igt_x86.c b/lib/igt_x86.c index 88e514df..6ac700df 100644 --- a/lib/igt_x86.c +++ b/lib/igt_x86.c @@ -88,6 +88,10 @@ #define bit_AVX (1 << 28) #endif +#ifndef bit_F16C +#define bit_F16C (1 << 29) +#endif + #ifndef bit_AVX2 #define bit_AVX2 (1<<5) #endif @@ -138,6 +142,9 @@ unsigned igt_x86_features(void) if (edx & bit_SSE2) features |= SSE2; + + if (ecx & bit_F16C) + features |= F16C; } if (max >= 7) { @@ -174,6 +181,8 @@ char *igt_x86_features_to_string(unsigned features, char *line) line += sprintf(line, ", avx"); if (features & AVX2) line += sprintf(line, ", avx2"); + if (features & F16C) + line += sprintf(line, ", f16c"); (void)line; |