| #!/usr/bin/env python3 |
| # |
| # Copyright (c) 2016-2022 Valve Corporation |
| # Copyright (c) 2016-2022 LunarG, Inc. |
| # Copyright (c) 2016-2022 Google Inc. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| # Author: Tony Barbour <tony@lunarg.com> |
| # Author: Spencer Fricke <spencerfricke@gmail.com> |
| # |
| # Compile GLSL to SPIR-V. Depends on glslangValidator |
| |
| import os |
| import sys |
| import subprocess |
| import struct |
| import re |
| import argparse |
| |
| import common_codegen |
| |
| SPIRV_MAGIC = 0x07230203 |
| COLUMNS = 4 |
| INDENT = 4 |
| |
| def identifierize(s): |
| # translate invalid chars |
| s = re.sub("[^0-9a-zA-Z_]", "_", s) |
| # translate leading digits |
| return re.sub("^[^a-zA-Z_]+", "_", s) |
| |
| def compile(filename, glslang_validator): |
| tmpfile = os.path.basename(filename) + '.tmp' |
| |
| # invoke glslangValidator |
| try: |
| args = [glslang_validator, "-V", "-H", "-o", tmpfile, filename] |
| output = subprocess.check_output(args, universal_newlines=True) |
| except subprocess.CalledProcessError as e: |
| raise Exception(e.output) |
| |
| # read the temp file into a list of SPIR-V words |
| words = [] |
| with open(tmpfile, "rb") as f: |
| data = f.read() |
| assert(len(data) and len(data) % 4 == 0) |
| |
| # determine endianness |
| fmt = ("<" if data[0] == (SPIRV_MAGIC & 0xff) else ">") + "I" |
| for i in range(0, len(data), 4): |
| words.append(struct.unpack(fmt, data[i:(i + 4)])[0]) |
| |
| assert(words[0] == SPIRV_MAGIC) |
| |
| # remove temp file |
| os.remove(tmpfile) |
| |
| # The disassembled SPIR-V first line has file path to the shader |
| # Because this might be absolute on the system, remove it |
| return (words, output.rstrip()[output.index('\n') + 1:]) |
| |
| def write(words, disassembled, filename, outfilename = None): |
| name = identifierize(os.path.basename(filename)) |
| |
| literals = [] |
| for i in range(0, len(words), COLUMNS): |
| columns = ["0x%08x" % word for word in words[i:(i + COLUMNS)]] |
| literals.append(" " * INDENT + ", ".join(columns) + ",") |
| |
| header = """#include <stdint.h> |
| #pragma once |
| |
| // *** THIS FILE IS GENERATED - DO NOT EDIT *** |
| // See generate_spirv.py for modifications |
| |
| /*************************************************************************** |
| * |
| * Copyright (c) 2021-2022 The Khronos Group Inc. |
| * Copyright (c) 2021-2022 Valve Corporation |
| * Copyright (c) 2021-2022 LunarG, Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| * Author: Tony Barbour <tony@lunarg.com> |
| * Author: Spencer Fricke <spencerfricke@gmail.com> |
| * |
| ****************************************************************************/ |
| |
| // disassembled SPIR-V |
| #if 0 |
| %s |
| #endif |
| |
| static const uint32_t %s[%d] = { |
| %s |
| }; |
| """ % (disassembled, name, len(words), "\n".join(literals)) |
| |
| if outfilename: |
| out_file = outfilename |
| else: |
| out_file = os.path.join(common_codegen.repo_relative('layers/generated'), name + '.h') |
| os.makedirs(os.path.dirname(out_file), exist_ok=True) |
| with open(out_file, "w") as f: |
| print(header, end="", file=f) |
| |
| def main(): |
| parser = argparse.ArgumentParser(description='Generate spirv code for this repository, see layers/gpu_shaders/README.md for more deatils') |
| parser.add_argument('--shader', action='store', type=str, help='Input Filename') |
| parser.add_argument('--glslang', action='store', type=str, help='Path to glslangvalidator to use') |
| parser.add_argument('--outfilename', action='store', type=str, help='Optional path to output file') |
| args = parser.parse_args() |
| |
| generate_shaders = [] |
| if args.shader: |
| if not os.path.isfile(args.shader): |
| sys.exit("Cannot find infilename " + args.shader) |
| generate_shaders.append(args.shader) |
| else: |
| # Get all shaders in gpu_shaders folder |
| shader_type = ['vert', 'tesc', 'tese', 'geom', 'frag', 'comp', 'mesh', 'task', 'rgen', 'rint', 'rahit', 'rchit', 'rmiss', 'rcall'] |
| gpu_shaders = common_codegen.repo_relative('layers/gpu_shaders') |
| for filename in os.listdir(gpu_shaders): |
| if (filename.split(".")[-1] in shader_type): |
| generate_shaders.append(os.path.join(gpu_shaders, filename)) |
| |
| # default glslangValidator path |
| glslang_validator = common_codegen.repo_relative('external/glslang/build/install/bin/glslangValidator') |
| if args.glslang: |
| glslang_validator = args.glslang |
| if not os.path.isfile(glslang_validator): |
| sys.exit("Cannot find glslangValidator " + glslang_validator) |
| |
| for shader in generate_shaders: |
| words, disassembled = compile(shader, glslang_validator) |
| write(words, disassembled, shader, args.outfilename) |
| |
| if __name__ == '__main__': |
| main() |