| #!/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. |
| # |
| # gen_load_texture_border_functions_table.py: |
| # Code generation for the load texture border function tables used for texture formats. These mappings are |
| # not renderer specific. The mappings are done from the GL internal format, to the ANGLE format ID. |
| # NOTE: don't run this script directly. Run scripts/run_code_generation.py. |
| # |
| |
| import json, sys |
| |
| sys.path.append('../..') |
| import angle_format |
| |
| template = """// GENERATED FILE - DO NOT EDIT. |
| // Generated by gen_load_texture_border_functions_table.py using data from load_texture_border_functions_data.json |
| // |
| // 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. |
| // |
| // load_texture_border_functions_table": |
| // Contains the LoadTextureBorderFunctionMap for texture_format_util.h |
| // |
| |
| #include "libANGLE/renderer/load_texture_border_functions_table.h" |
| #include "image_util/loadtextureborder.h" |
| |
| using namespace rx; |
| |
| namespace angle |
| {{ |
| |
| namespace |
| {{ |
| |
| // ES3 texture border color loading functions vary based on: |
| // - the GL internal format (supplied to glTex*Image*D) |
| // - the target DXGI_FORMAT that the image will be loaded into (which is chosen based on the D3D |
| // device's capabilities) |
| // This map type determines which loading function to use, based on these two parameters. |
| // This map only contains formats which need to reorder border color channel explictly. |
| |
| {load_functions_data}}} // namespace |
| |
| LoadTextureBorderFunctionMap GetLoadTextureBorderFunctionsMap(GLenum {internal_format}, FormatID {angle_format}) |
| {{ |
| switch ({internal_format}) |
| {{ |
| {switch_data} |
| default: |
| // Use LoadToNative for any format that doesn't reorder channels. |
| return DefaultLoadFunction; |
| }} |
| |
| }} // GetLoadTextureBorderFunctionsMap |
| |
| }} // namespace angle |
| """ |
| |
| internal_format_param = 'internalFormat' |
| angle_format_param = 'angleFormat' |
| angle_format_unknown = 'NONE' |
| |
| |
| def load_functions_name(internal_format, angle_format): |
| return internal_format[3:] + "_to_" + angle_format |
| |
| |
| def get_load_func(func_name, load_function): |
| snippet = "LoadTextureBorderFunctionInfo " + func_name + "()\n" |
| snippet += "{\n" |
| snippet += " return LoadTextureBorderFunctionInfo(" + load_function + ");\n" |
| snippet += "}\n" |
| snippet += "\n" |
| |
| return snippet |
| |
| |
| def parse_json(json_data): |
| table_data = '' |
| load_functions_data = '' |
| load_functions_data += get_load_func('DefaultLoadFunction', 'LoadToNative') |
| for internal_format, angle_format_func in sorted(json_data["map"].items()): |
| |
| s = ' ' |
| |
| table_data += s + 'case ' + internal_format + ':\n' |
| |
| do_switch = len(angle_format_func) > 1 or list( |
| angle_format_func)[0] != angle_format_unknown |
| |
| if do_switch: |
| table_data += s + '{\n' |
| s += ' ' |
| table_data += s + 'switch (' + angle_format_param + ')\n' |
| table_data += s + '{\n' |
| s += ' ' |
| |
| for angle_format, load_function in sorted(angle_format_func.items()): |
| func_name = load_functions_name(internal_format, angle_format) |
| # Main case statements |
| table_data += s + 'case FormatID::' + angle_format + ':\n' |
| table_data += s + ' return ' + func_name + ';\n' |
| |
| load_functions_data += get_load_func(func_name, load_function) |
| |
| if do_switch: |
| table_data += s + 'default:\n' |
| table_data += s + ' return DefaultLoadFunction;\n' |
| |
| if do_switch: |
| s = s[4:] |
| table_data += s + '}\n' |
| s = s[4:] |
| table_data += s + '}\n' |
| |
| return table_data, load_functions_data |
| |
| |
| def main(): |
| |
| # auto_script parameters. |
| if len(sys.argv) > 1: |
| inputs = ['angle_format.py', 'load_texture_border_functions_data.json'] |
| outputs = ['load_texture_border_functions_table_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 |
| |
| json_data = angle_format.load_json('load_texture_border_functions_data.json') |
| |
| switch_data, load_functions_data = parse_json(json_data) |
| output = template.format( |
| internal_format=internal_format_param, |
| angle_format=angle_format_param, |
| switch_data=switch_data, |
| load_functions_data=load_functions_data) |
| |
| with open('load_texture_border_functions_table_autogen.cpp', 'wt') as out_file: |
| out_file.write(output) |
| out_file.close() |
| return 0 |
| |
| |
| if __name__ == '__main__': |
| sys.exit(main()) |