80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
/*
|
|
* Copyright © 2021 Google LLC
|
|
*
|
|
* 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 (including the next
|
|
* paragraph) 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 <u_format.h>
|
|
|
|
#if (defined(PIPE_ARCH_AARCH64) || defined(PIPE_ARCH_ARM)) && !defined(NO_FORMAT_ASM) && !defined(__SOFTFP__)
|
|
|
|
/* armhf builds default to vfp, not neon, and refuses to compile neon intrinsics
|
|
* unless you tell it "no really".
|
|
*/
|
|
#ifdef PIPE_ARCH_ARM
|
|
#pragma GCC target ("fpu=neon")
|
|
#endif
|
|
|
|
#include <arm_neon.h>
|
|
#include "u_format_pack.h"
|
|
#include "util/u_cpu_detect.h"
|
|
|
|
static void
|
|
util_format_b8g8r8a8_unorm_unpack_rgba_8unorm_neon(uint8_t *restrict dst, const uint8_t *restrict src, unsigned width)
|
|
{
|
|
while (width >= 16) {
|
|
uint8x16x4_t load = vld4q_u8(src);
|
|
uint8x16x4_t swap = { .val = { load.val[2], load.val[1], load.val[0], load.val[3] } };
|
|
vst4q_u8(dst, swap);
|
|
width -= 16;
|
|
dst += 16 * 4;
|
|
src += 16 * 4;
|
|
}
|
|
if (width)
|
|
util_format_b8g8r8a8_unorm_unpack_rgba_8unorm(dst, src, width);
|
|
}
|
|
|
|
static const struct util_format_unpack_description util_format_unpack_descriptions_neon[] = {
|
|
[PIPE_FORMAT_B8G8R8A8_UNORM] = {
|
|
.unpack_rgba_8unorm = &util_format_b8g8r8a8_unorm_unpack_rgba_8unorm_neon,
|
|
.unpack_rgba = &util_format_b8g8r8a8_unorm_unpack_rgba_float,
|
|
},
|
|
};
|
|
|
|
const struct util_format_unpack_description *
|
|
util_format_unpack_description_neon(enum pipe_format format)
|
|
{
|
|
/* CPU detect for NEON support. On arm64, it's implied. */
|
|
#ifdef PIPE_ARCH_ARM
|
|
if (!util_get_cpu_caps()->has_neon)
|
|
return NULL;
|
|
#endif
|
|
|
|
if (format >= ARRAY_SIZE(util_format_unpack_descriptions_neon))
|
|
return NULL;
|
|
|
|
if (!util_format_unpack_descriptions_neon[format].unpack_rgba)
|
|
return NULL;
|
|
|
|
return &util_format_unpack_descriptions_neon[format];
|
|
}
|
|
|
|
#endif /* PIPE_ARCH_AARCH64 | PIPE_ARCH_ARM */
|