1 /*
2 * Copyright © 2015 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 *
23 * Authors:
24 * Jason Ekstrand (jason@jlekstrand.net)
25 *
26 */
27
28 /*
29 * A simple executable that opens a SPIR-V shader, converts it to NIR, and
30 * dumps out the result. This should be useful for testing the
31 * spirv_to_nir code.
32 */
33
34 #include "spirv/nir_spirv.h"
35
36 #include <sys/mman.h>
37 #include <sys/types.h>
38 #include <fcntl.h>
39 #include <unistd.h>
40 #include <stdio.h>
41 #include <errno.h>
42 #include <string.h>
43
44 #define WORD_SIZE 4
45
main(int argc,char ** argv)46 int main(int argc, char **argv)
47 {
48 int fd = open(argv[1], O_RDONLY);
49 if (fd < 0)
50 {
51 fprintf(stderr, "Failed to open %s\n", argv[1]);
52 return 1;
53 }
54
55 off_t len = lseek(fd, 0, SEEK_END);
56 if (len % WORD_SIZE != 0)
57 {
58 fprintf(stderr, "File length isn't a multiple of the word size\n");
59 fprintf(stderr, "Are you sure this is a valid SPIR-V shader?\n");
60 close(fd);
61 return 1;
62 }
63
64 size_t word_count = len / WORD_SIZE;
65
66 const void *map = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0);
67 if (map == MAP_FAILED)
68 {
69 fprintf(stderr, "Failed to mmap the file: errno=%d, %s\n",
70 errno, strerror(errno));
71 close(fd);
72 return 1;
73 }
74
75 nir_function *func = spirv_to_nir(map, word_count, NULL, 0,
76 MESA_SHADER_FRAGMENT, "main", NULL, NULL);
77 nir_print_shader(func->shader, stderr);
78
79 return 0;
80 }
81