From 99cc81472c278fdf1eb55143779378b45c79c33f Mon Sep 17 00:00:00 2001 From: Kevin Strasser Date: Fri, 5 Apr 2019 13:14:03 -0700 Subject: lib: Add halffloat implementation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Ville Syrjälä Reviewed-by: Maarten Lankhorst Signed-off-by: Ville Syrjälä --- lib/igt_halffloat.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 lib/igt_halffloat.h (limited to 'lib/igt_halffloat.h') diff --git a/lib/igt_halffloat.h b/lib/igt_halffloat.h new file mode 100644 index 00000000..8db448a1 --- /dev/null +++ b/lib/igt_halffloat.h @@ -0,0 +1,27 @@ +/* + * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#include + +void igt_float_to_half(const float *f, uint16_t *h, unsigned int num); +void igt_half_to_float(const uint16_t *h, float *f, unsigned int num); + -- cgit v1.2.3