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

• Show log

  Commit

• Hash : 1e1505b5
  Author :
  Date : 2022-02-24T20:59:57
  

  Upgrade Python scripts from Python2 to Python3
  
  Bug: angleproject:5707
  Change-Id: I2c00ef7e7cb529eab2be61378c9a5511a69acd1a
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3486298
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Yuxin Hu <yuxinhu@google.com>
  

Download

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

• #!/usr/bin/python3
  # Copyright 2021 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.
  #
  # create_mtl_internal_shaders.py:
  #   Script to compile a metalLib into NSData, for including the compilded
  #       library in the ANGLE dylib.
  
  import os
  import sys
  import json
  from datetime import datetime
  
  sys.path.append('../..')
  
  template_header_boilerplate = """// GENERATED FILE - DO NOT EDIT.
  // Generated by {script_name}
  //
  // Copyright {copyright_year} 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.
  //
  """
  
  
  # Convert content of a file to byte array and store in a header file.
  # variable_name: name of C++ variable that will hold the file content as byte array.
  # filename: the file whose content will be converted to C++ byte array.
  # dest_src_file: destination header file that will contain the byte array.
  def append_file_as_byte_array_string(variable_name, filename, dest_src_file):
      string = '// Generated from {0}:\n'.format(filename)
      string += 'constexpr uint8_t {0}[]={{\n'.format(variable_name)
      bytes_ = open(filename, "rb").read()
      for byte in bytes_:
          string += '0x{:02x}'.format(byte) + ", "
      string += "\n};\n"
      with open(dest_src_file, "a") as out_file:
          out_file.write(string)
  
  
  # Compile metal shader.
  # compiled_file: The compiled metallib
  # variable_name: name of C++ variable that will hold the compiled binary data as a C array.
  # additional_flags: additional shader compiler flags
  # src_files: metal source files
  def gen_precompiled_shaders(compiled_file, variable_name, output_file):
      append_file_as_byte_array_string(variable_name, compiled_file, output_file)
      os.system('echo "constexpr size_t {0}_len=sizeof({0});" >> \"{1}\"'.format(
          variable_name, output_file))
  
  
  def main():
      input_file = sys.argv[1]
      output_file = sys.argv[2]
      os.chdir(sys.path[0])
  
      boilerplate_code = template_header_boilerplate.format(
          script_name=sys.argv[0], copyright_year=datetime.today().year)
  
      # -------- Compile shaders -----------
      # boiler plate code
      os.system("echo \"{0}\" > \"{1}\"".format(boilerplate_code, output_file))
      os.system(
          'echo "// Compiled binary for Metal default shaders.\n\n" >>  \"{0}\"'.format(output_file))
      os.system('echo "#include <TargetConditionals.h>\n\n" >>  \"{0}\"'.format(output_file))
  
      os.system('echo "// clang-format off" >> \"{0}\"'.format(output_file))
  
      gen_precompiled_shaders(input_file, 'gMetalBinaryShaders', output_file)
  
      os.system('echo "// clang-format on" >> \"{0}\"'.format(output_file))
  
  
  if __name__ == '__main__':
      sys.exit(main())
  

Download