kc3-lang/angle/src/libANGLE/renderer/gen_dxgi_format_table.py

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• Hash : 4d3a0f60
  Author :
  Date : 2020-09-11T12:36:05
  

  GN: Componentize D3D format tables.
  
  These tables are used by both the GL and D3D11 back-ends. Also moves
  them to renderer_utils to be in a shared place.
  
  Bug: angleproject:3943
  Change-Id: I1f5d79842396a87e795547fa03c6855d6f9c5e9a
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2405805
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/renderer/gen_dxgi_format_table.py

• #!/usr/bin/python
  # Copyright 2016 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.
  #
  # gen_dxgi_format_table.py:
  #  Code generation for DXGI format map.
  #  NOTE: don't run this script directly. Run scripts/run_code_generation.py.
  
  from datetime import date
  import sys
  import angle_format
  
  template_cpp = """// GENERATED FILE - DO NOT EDIT.
  // Generated by {script_name} using data from {data_source_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.
  //
  // DXGI format info:
  //   Determining metadata about a DXGI format.
  
  #include "libANGLE/renderer/Format.h"
  
  using namespace angle;
  
  namespace rx
  {{
  
  namespace d3d11
  {{
  
  GLenum GetComponentType(DXGI_FORMAT dxgiFormat)
  {{
      switch (dxgiFormat)
      {{
  {component_type_cases}        default:
              break;
      }}
  
      UNREACHABLE();
      return GL_NONE;
  }}
  
  }}  // namespace d3d11
  
  namespace d3d11_angle
  {{
  
  const Format &GetFormat(DXGI_FORMAT dxgiFormat)
  {{
      switch (dxgiFormat)
      {{
  {format_cases}        default:
              break;
      }}
  
      UNREACHABLE();
      return Format::Get(FormatID::NONE);
  }}
  
  }}  // namespace d3d11_angle
  
  }}  // namespace rx
  """
  
  template_format_case = """        case DXGI_FORMAT_{dxgi_format}:
              return {result};
  """
  
  template_undefined_case = """        case DXGI_FORMAT_{dxgi_format}:
              break;
  """
  
  
  def format_case(dxgi_format, result):
      return template_format_case.format(dxgi_format=dxgi_format, result=result)
  
  
  def undefined_case(dxgi_format):
      return template_undefined_case.format(dxgi_format=dxgi_format)
  
  
  def main():
  
      # auto_script parameters.
      if len(sys.argv) > 1:
          inputs = [
              'angle_format.py',
              'angle_format_map.json',
              'dxgi_format_data.json',
          ]
          outputs = ['dxgi_format_map_autogen.cpp']
  
          if sys.argv[1] == 'inputs':
              print ','.join(inputs)
          elif sys.argv[1] == 'outputs':
              print ','.join(outputs)
          else:
              print('Invalid script parameters')
              return 1
          return 0
  
      component_cases = ""
      format_cases = ""
  
      input_data = 'dxgi_format_data.json'
  
      dxgi_map = angle_format.load_json(input_data)
  
      types = {
          'SNORM': 'GL_SIGNED_NORMALIZED',
          'UNORM': 'GL_UNSIGNED_NORMALIZED',
          'SINT': 'GL_INT',
          'UINT': 'GL_UNSIGNED_INT',
          'FLOAT': 'GL_FLOAT',
          'SHAREDEXP': 'GL_FLOAT'
      }
  
      all_angle = angle_format.get_all_angle_formats()
  
      for dxgi_format, a_format in sorted(dxgi_map.iteritems()):
  
          found = [ctype in dxgi_format for ctype in types.keys()]
          count = reduce((lambda a, b: int(a) + int(b)), found)
  
          component_type = 'GL_NONE'
  
          if count == 1:
              gltype = next(gltype for ctype, gltype in types.iteritems() if ctype in dxgi_format)
              component_cases += format_case(dxgi_format, gltype)
          else:
              component_cases += undefined_case(dxgi_format)
  
          if a_format == "":
              a_format = dxgi_format
  
          if a_format in all_angle:
              a_format = "Format::Get(FormatID::" + a_format + ")"
              format_cases += format_case(dxgi_format, a_format)
          else:
              format_cases += undefined_case(dxgi_format)
  
      with open('dxgi_format_map_autogen.cpp', 'wt') as out_file:
          output_cpp = template_cpp.format(
              script_name=sys.argv[0],
              data_source_name=input_data,
              copyright_year=date.today().year,
              component_type_cases=component_cases,
              format_cases=format_cases)
          out_file.write(output_cpp)
          out_file.close()
      return 0
  
  
  if __name__ == '__main__':
      sys.exit(main())
  

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