#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;
+ }
- assert(len % 4 == 0);
- size_t word_count = len / 4;
+ size_t word_count = len / WORD_SIZE;
const void *map = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0);
- assert(map != NULL);
+ 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);
- nir_function *func = spirv_to_nir(map, word_count, NULL, 0,
- MESA_SHADER_FRAGMENT, "main", NULL);
- nir_print_shader(func->shader, stderr);
+ return 0;
}