kc3-lang/angle/scripts/gen_proc_table.py

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• Hash : 232e5236
  Author :
  Date : 2021-07-08T15:08:35
  

  Remove the explicit context extension.
  
  This extension currently has no known users and doubles the
  number of entry points that ANGLE exports which is a significant
  binary size cost.
  
  This saves about 130kb of binary size on Android.
  
  Bug: chromium:1084580
  Change-Id: Ib0fc4930b38a33bd61434f7d0030ba9fb9b93ba7
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3015518
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• scripts/gen_proc_table.py

• #!/usr/bin/python3
  # Copyright 2017 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_proc_table.py:
  #  Code generation for entry point loading tables.
  #  NOTE: don't run this script directly. Run scripts/run_code_generation.py.
  
  import sys
  import registry_xml
  
  out_file_name_gles = "../src/libGLESv2/proc_table_egl_autogen.cpp"
  out_file_name_gl = "../src/libGL/proc_table_wgl_autogen.cpp"
  out_file_name_cl = "../src/libGLESv2/proc_table_cl_autogen.cpp"
  out_file_name_cl_map = "../src/libOpenCL/libOpenCL_autogen.map"
  
  strip_suffixes = ["ANGLE", "EXT", "KHR", "OES", "CHROMIUM", "OVR"]
  
  template_cpp = """// GENERATED FILE - DO NOT EDIT.
  // Generated by {script_name} using data from {data_source_name}.
  //
  // Copyright 2019 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.
  //
  // getProcAddress loader table:
  //   Mapping from a string entry point name to function address.
  //
  
  {includes}
  #define P(FUNC) reinterpret_cast<{cast}>(FUNC)
  
  namespace {namespace}
  {{
  const ProcEntry g_procTable[] = {{
  {proc_data}
  }};
  
  const size_t g_numProcs = {num_procs};
  }}  // namespace {namespace}
  """
  
  template_map_cpp = """// GENERATED FILE - DO NOT EDIT.
  // Generated by {script_name} using data from {data_source_name}.
  //
  // 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.
  //
  // proc_table:
  //   Mapping from a string entry point name to function address.
  //
  
  {includes}
  #define P(FUNC) reinterpret_cast<{cast}>(FUNC)
  
  namespace {namespace}
  {{
  
  const ProcTable &GetProcTable()
  {{
      static angle::base::NoDestructor<ProcTable> sProcTable(
          {{{proc_data}}});
      return *sProcTable;
  }}
  
  }}  // namespace {namespace}
  """
  
  template_map = """/* GENERATED FILE - DO NOT EDIT.
   * Generated by {script_name} using data from {data_source_name}.
   *
   * 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.
   *
   * symbol version map: Maps versions to entry point names for a shared library.
   */
  {symbol_maps}
  """
  
  includes_gles = """#include "libGLESv2/proc_table_egl.h"
  
  #include "libGLESv2/entry_points_egl_autogen.h"
  #include "libGLESv2/entry_points_egl_ext_autogen.h"
  #include "libGLESv2/entry_points_gles_1_0_autogen.h"
  #include "libGLESv2/entry_points_gles_2_0_autogen.h"
  #include "libGLESv2/entry_points_gles_3_0_autogen.h"
  #include "libGLESv2/entry_points_gles_3_1_autogen.h"
  #include "libGLESv2/entry_points_gles_3_2_autogen.h"
  #include "libGLESv2/entry_points_gles_ext_autogen.h"
  #include "platform/PlatformMethods.h"
  """
  
  includes_gl = """#include "libGL/proc_table_wgl.h"
  
  #include "libGL/entry_points_wgl.h"
  #include "libGL/entry_points_gl_1_autogen.h"
  #include "libGL/entry_points_gl_2_autogen.h"
  #include "libGL/entry_points_gl_3_autogen.h"
  #include "libGL/entry_points_gl_4_autogen.h"
  #include "platform/PlatformMethods.h"
  """
  
  includes_cl = """#include "libGLESv2/proc_table_cl.h"
  
  #include "libGLESv2/entry_points_cl_autogen.h"
  
  #include "anglebase/no_destructor.h"
  
  // Using fully qualified entry point identifiers to make sure that missing entry points would not
  // pick up the global declarations of OpenCL
  """
  
  sys.path.append('../src/libANGLE/renderer')
  import angle_format
  
  
  def _get_annotations(versions):
      return ["%d_%d" % version for version in versions]
  
  
  def main():
  
      # auto_script parameters.
      if len(sys.argv) > 1:
          inputs = [source for source in registry_xml.xml_inputs]
          outputs = [out_file_name_gles, out_file_name_gl, out_file_name_cl, out_file_name_cl_map]
          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
  
      glesxml = registry_xml.RegistryXML('gl.xml', 'gl_angle_ext.xml')
  
      for annotation in _get_annotations(registry_xml.GLES_VERSIONS):
          name_prefix = "GL_ES_VERSION_"
          if annotation[0] == '1':
              name_prefix = "GL_VERSION_ES_CM_"
          feature_name = "{}{}".format(name_prefix, annotation)
          glesxml.AddCommands(feature_name, annotation)
  
      glesxml.AddExtensionCommands(registry_xml.supported_extensions, ['gles2', 'gles1'])
  
      # Also don't add GLES extension commands to libGL proc table
      extension_commands = []
      for extension_name, ext_cmd_names in sorted(glesxml.ext_data.items()):
          extension_commands.extend(glesxml.ext_data[extension_name])
      for name in extension_commands:
          name_no_suffix = name
          for suffix in strip_suffixes:
              if name_no_suffix.endswith(suffix):
                  name_no_suffix = name_no_suffix[0:-len(suffix)]
  
      gles_data = glesxml.all_cmd_names.get_all_commands()
  
      eglxml = registry_xml.RegistryXML('egl.xml', 'egl_angle_ext.xml')
  
      for annotation in _get_annotations(registry_xml.EGL_VERSIONS):
          name_prefix = "EGL_VERSION_"
          feature_name = "{}{}".format(name_prefix, annotation)
          eglxml.AddCommands(feature_name, annotation)
  
      eglxml.AddExtensionCommands(registry_xml.supported_egl_extensions, ['gles2', 'gles1'])
  
      gles_data.extend(eglxml.all_cmd_names.get_all_commands())
  
      gles_data.append("ANGLEGetDisplayPlatform")
      gles_data.append("ANGLEResetDisplayPlatform")
  
      all_functions = {}
  
      for function in gles_data:
          if function.startswith("gl"):
              all_functions[function] = "GL_" + function[2:]
          elif function.startswith("egl"):
              all_functions[function] = "EGL_" + function[3:]
          else:
              all_functions[function] = function
  
      proc_data = [('    {"%s", P(%s)}' % (func, angle_func))
                   for func, angle_func in sorted(all_functions.items())]
  
      with open(out_file_name_gles, 'w') as out_file:
          output_cpp = template_cpp.format(
              script_name=sys.argv[0],
              data_source_name="gl.xml, gl_angle_ext.xml, egl.xml, egl_angle_ext.xml",
              includes=includes_gles,
              cast="__eglMustCastToProperFunctionPointerType",
              namespace="egl",
              proc_data=",\n".join(proc_data),
              num_procs=len(proc_data))
          out_file.write(output_cpp)
          out_file.close()
  
      # libGL proc table
      glxml = registry_xml.RegistryXML('gl.xml')
  
      for annotation in _get_annotations(registry_xml.DESKTOP_GL_VERSIONS):
          name_prefix = "GL_VERSION_"
          feature_name = "{}{}".format(name_prefix, annotation)
          glxml.AddCommands(feature_name, annotation)
  
      gl_data = [cmd for cmd in glxml.all_cmd_names.get_all_commands()]
  
      wglxml = registry_xml.RegistryXML('wgl.xml')
  
      for annotation in _get_annotations(registry_xml.WGL_VERSIONS):
          name_prefix = "WGL_VERSION_"
          feature_name = "{}{}".format(name_prefix, annotation)
          wglxml.AddCommands(feature_name, annotation)
  
      gl_commands = wglxml.all_cmd_names.get_all_commands()
      gl_data.extend([cmd if cmd[:3] == 'wgl' else 'wgl' + cmd for cmd in gl_commands])
  
      all_functions = {}
  
      for function in gl_data:
          if function.startswith("gl"):
              all_functions[function] = "GL_" + function[2:]
          else:
              all_functions[function] = function
  
      proc_data = [('    {"%s", P(%s)}' % (func, angle_func))
                   for func, angle_func in sorted(all_functions.items())]
  
      with open(out_file_name_gl, 'w') as out_file:
          output_cpp = template_cpp.format(
              script_name=sys.argv[0],
              data_source_name="gl.xml, wgl.xml",
              includes=includes_gl,
              cast="PROC",
              namespace="wgl",
              proc_data=",\n".join(proc_data),
              num_procs=len(proc_data))
          out_file.write(output_cpp)
          out_file.close()
  
      # libCL proc table
      clxml = registry_xml.RegistryXML('cl.xml')
      symbol_maps = []
      symbol_map_dependency = ""
  
      for major_version, minor_version in registry_xml.CL_VERSIONS:
          name_prefix = "CL_VERSION_"
          annotation = "%d_%d" % (major_version, minor_version)
          feature_name = "%s%s" % (name_prefix, annotation)
          clxml.AddCommands(feature_name, annotation)
          symbol_version = "OPENCL_%d.%d" % (major_version, minor_version)
          symbol_maps += ["\n%s {\n    global:" % symbol_version]
          symbol_maps += ['        %s;' % cmd for cmd in clxml.commands[annotation]]
          if not symbol_map_dependency:
              symbol_maps += ["    local:\n        *;\n};"]
          else:
              symbol_maps += ["} %s;" % symbol_map_dependency]
          symbol_map_dependency = symbol_version
  
      clxml.AddExtensionCommands(registry_xml.supported_cl_extensions, ['cl'])
      cl_commands = clxml.all_cmd_names.get_all_commands()
      proc_data = ['{"%s", P(::cl::%s)}' % (cmd, cmd) for cmd in cl_commands]
  
      with open(out_file_name_cl, 'w') as out_file:
          output_cpp = template_map_cpp.format(
              script_name=sys.argv[0],
              data_source_name="cl.xml",
              includes=includes_cl,
              cast="void *",
              namespace="cl",
              proc_data=",\n         ".join(proc_data))
          out_file.write(output_cpp)
          out_file.close()
  
      with open(out_file_name_cl_map, 'w') as out_file:
          output_map = template_map.format(
              script_name=sys.argv[0], data_source_name="cl.xml", symbol_maps="\n".join(symbol_maps))
          out_file.write(output_map)
          out_file.close()
  
      return 0
  
  
  if __name__ == '__main__':
      sys.exit(main())
  

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