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/*
* Copyright © 2015 Intel Corporation
*
* 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.
*
* Authors:
* Jason Ekstrand (jason@jlekstrand.net)
*
*/
/*
* A simple executable that opens a SPIR-V shader, converts it to NIR, and
* dumps out the result. This should be useful for testing the
* spirv_to_nir code.
*/
#include "spirv/nir_spirv.h"
#include <sys/mman.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#define WORD_SIZE 4
int main(int argc, char **argv)
{
int fd = open(argv[1], O_RDONLY);
if (fd < 0)
{
fprintf(stderr, "Failed to open %s\n", argv[1]);
return 1;
}
off_t len = lseek(fd, 0, SEEK_END);
if (len % WORD_SIZE != 0)
{
fprintf(stderr, "File length isn't a multiple of the word size\n");
fprintf(stderr, "Are you sure this is a valid SPIR-V shader?\n");
close(fd);
return 1;
}
size_t word_count = len / WORD_SIZE;
const void *map = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0);
if (map == MAP_FAILED)
{
fprintf(stderr, "Failed to mmap the file: errno=%d, %s\n",
errno, strerror(errno));
close(fd);
return 1;
}
struct spirv_to_nir_options spirv_opts = {};
nir_shader *nir = spirv_to_nir(map, word_count, NULL, 0,
MESA_SHADER_FRAGMENT, "main",
&spirv_opts, NULL);
nir_print_shader(nir, stderr);
return 0;
}
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