kc3-lang/angle/src/libANGLE/renderer/metal/shaders/embed_in_header.py

• Show log

  Commit

• Hash : db38707a
  Author :
  Date : 2023-10-19T18:08:51
  

  Metal: Compile mtllib at build time.
  
  Reworks gen_mtl_internal_shaders.py to only generate the combined metal
  source file, mtl_internal_shaders_autogen.metal.
  
  metallibs are now compiled at build time using gn actions.
  
  This allows the Chrome and WebKit build process to use the same code
  for loading the builtin shaders even though they compile them in
  different ways.
  
  We now only build the mtllib for the OS we're currently building for.
  
  Bug: chromium:1385510
  Change-Id: Ie3b4f66c48a7e0eccd5fe664f988e407f452795c
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4583134
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Alexey Knyazev <lexa.knyazev@gmail.com>
  

Download

• src/libANGLE/renderer/metal/shaders/embed_in_header.py

• #!/usr/bin/python3
  # Copyright 2023 The ANGLE Project Authors. All rights reserved.
  # Use of this source code is governed by a BSD-style license that can be
  # found in the LICENSE file.
  
  import os
  import subprocess
  import sys
  import argparse
  
  template_header_boilerplate = """// GENERATED FILE - DO NOT EDIT.
  // Generated by {script_name}
  //
  // Copyright 2020 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  """
  
  
  def embed_in_header(source_file, variable_name, dest_header_file):
      boilerplate_code = template_header_boilerplate.format(
          script_name=os.path.basename(sys.argv[0]))
  
      with open(source_file, 'rb') as f:
          source_data = f.read()
  
      with open(dest_header_file, 'wt') as out_file:
          out_file.write(boilerplate_code)
          out_file.write('\n')
          out_file.write('// C++ string version of default shaders mtllib.\n\n')
          out_file.write('\n\nstatic constexpr uint8_t ' + variable_name + '[] = {\n')
          for byte in source_data:
              out_file.write(f"{byte}, ")
          out_file.write('\n')
          out_file.write('};\n')
          out_file.close()
  
  
  def main():
      parser = argparse.ArgumentParser()
      parser.add_argument('--source')
      parser.add_argument('--variable-name')
      parser.add_argument('--header')
      args = parser.parse_args()
  
      embed_in_header(args.source, args.variable_name, args.header)
  
  
  if __name__ == '__main__':
      sys.exit(main())
  

Download