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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>
#include <getopt.h>
#define WORD_SIZE 4
static gl_shader_stage
stage_to_enum(char *stage)
{
if (!strcmp(stage, "vertex"))
return MESA_SHADER_VERTEX;
else if (!strcmp(stage, "tess-ctrl"))
return MESA_SHADER_TESS_CTRL;
else if (!strcmp(stage, "tess-eval"))
return MESA_SHADER_TESS_EVAL;
else if (!strcmp(stage, "geometry"))
return MESA_SHADER_GEOMETRY;
else if (!strcmp(stage, "fragment"))
return MESA_SHADER_FRAGMENT;
else if (!strcmp(stage, "compute"))
return MESA_SHADER_COMPUTE;
else if (!strcmp(stage, "kernel"))
return MESA_SHADER_KERNEL;
else if (!strcmp(stage, "task"))
return MESA_SHADER_TASK;
else if (!strcmp(stage, "mesh"))
return MESA_SHADER_MESH;
else
return MESA_SHADER_NONE;
}
static void
print_usage(char *exec_name, FILE *f)
{
fprintf(f,
"Usage: %s [options] file\n"
"Options:\n"
" -h --help Print this help.\n"
" -s, --stage <stage> Specify the shader stage. Valid stages are:\n"
" vertex, tess-ctrl, tess-eval, geometry, fragment,\n"
" task, mesh, compute, and kernel (OpenCL-style compute).\n"
" -e, --entry <name> Specify the entry-point name.\n"
" -g, --opengl Use OpenGL environment instead of Vulkan for\n"
" graphics stages.\n"
, exec_name);
}
int main(int argc, char **argv)
{
gl_shader_stage shader_stage = MESA_SHADER_FRAGMENT;
char *entry_point = "main";
int ch;
enum nir_spirv_execution_environment env = NIR_SPIRV_VULKAN;
static struct option long_options[] =
{
{"help", no_argument, 0, 'h'},
{"stage", required_argument, 0, 's'},
{"entry", required_argument, 0, 'e'},
{"opengl", no_argument, 0, 'g'},
{0, 0, 0, 0}
};
while ((ch = getopt_long(argc, argv, "hs:e:g", long_options, NULL)) != -1)
{
switch (ch)
{
case 'h':
print_usage(argv[0], stdout);
return 0;
case 's':
shader_stage = stage_to_enum(optarg);
if (shader_stage == MESA_SHADER_NONE)
{
fprintf(stderr, "Unknown stage \"%s\"\n", optarg);
print_usage(argv[0], stderr);
return 1;
}
break;
case 'e':
entry_point = optarg;
break;
case 'g':
env = NIR_SPIRV_OPENGL;
break;
default:
fprintf(stderr, "Unrecognized option \"%s\".\n", optarg);
print_usage(argv[0], stderr);
return 1;
}
}
const char *filename = argv[optind];
int fd = open(filename, O_RDONLY);
if (fd < 0)
{
fprintf(stderr, "Failed to open %s\n", filename);
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;
}
glsl_type_singleton_init_or_ref();
struct spirv_to_nir_options spirv_opts = {
.environment = env,
.use_deref_buffer_array_length = env == NIR_SPIRV_OPENGL,
};
if (shader_stage == MESA_SHADER_KERNEL) {
spirv_opts.environment = NIR_SPIRV_OPENCL;
spirv_opts.caps.address = true;
spirv_opts.caps.float64 = true;
spirv_opts.caps.int8 = true;
spirv_opts.caps.int16 = true;
spirv_opts.caps.int64 = true;
spirv_opts.caps.kernel = true;
}
nir_shader *nir = spirv_to_nir(map, word_count, NULL, 0,
shader_stage, entry_point,
&spirv_opts, NULL);
if (nir)
nir_print_shader(nir, stderr);
else
fprintf(stderr, "SPIRV to NIR compilation failed\n");
glsl_type_singleton_decref();
return 0;
}
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