gen_format_map.py

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Author : Lubosz Sarnecki
Date : 2021-02-11 16:12:48
Hash : 37752956
Message : Generators: Use fixed year in license headers. Remove dynamic year generation from generator scripts, as required by the Chromium C++ style guide. The dynamic year values were replaced by the current year at the time the file was created according to git log. The code to dynamically generate the year was removed. This patch also refreshes generated files and hashes. Bug: angleproject:5516 Change-Id: I735028bccb5c83217e92c380538f1abf0a906b2c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2690950 Commit-Queue: Lubosz Sarnecki <lubosz.sarnecki@collabora.com> Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>

src/libANGLE/gen_format_map.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_format_map.py:
#  Code generation for GL format map. The format map matches between
#  {format,type} and internal format.
#  NOTE: don't run this script directly. Run scripts/run_code_generation.py.

import sys

sys.path.append('renderer')
import angle_format

template_cpp = """// GENERATED FILE - DO NOT EDIT.
// Generated by {script_name} using data from {data_source_name}.
// ES3 format info from {es3_data_source_name}.
//
// 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.
//
// format_map:
//   Determining the sized internal format from a (format,type) pair.
//   Also check es3 format combinations for validity.

#include "angle_gl.h"
#include "common/debug.h"

namespace gl
{{

GLenum GetSizedFormatInternal(GLenum format, GLenum type)
{{
    switch (format)
    {{
{format_cases}        case GL_NONE:
            return GL_NONE;

        default:
            break;
    }}

    return GL_NONE;
}}

bool ValidES3Format(GLenum format)
{{
    switch (format)
    {{
{es3_format_cases}            return true;

        default:
            return false;
    }}
}}

bool ValidES3Type(GLenum type)
{{
    switch (type)
    {{
{es3_type_cases}            return true;

        default:
            return false;
    }}
}}

bool ValidES3FormatCombination(GLenum format, GLenum type, GLenum internalFormat)
{{
    ASSERT(ValidES3Format(format) && ValidES3Type(type));

    switch (format)
    {{
{es3_combo_cases}        default:
            UNREACHABLE();
            break;
    }}

    return false;
}}

}}  // namespace gl
"""

template_format_case = """        case {format}:
            switch (type)
            {{
{type_cases}                default:
                    break;
            }}
            break;

"""

template_simple_case = """                case {key}:
                    return {result};
"""

template_es3_combo_type_case = """                case {type}:
                {{
                    switch (internalFormat)
                    {{
{internal_format_cases}                            return true;
                        default:
                            break;
                    }}
                    break;
                }}
"""


def parse_type_case(type, result):
    return template_simple_case.format(key=type, result=result)


def parse_format_case(format, type_map):
    type_cases = ""
    for type, internal_format in sorted(type_map.iteritems()):
        type_cases += parse_type_case(type, internal_format)
    return template_format_case.format(format=format, type_cases=type_cases)


def main():

    # auto_script parameters.
    if len(sys.argv) > 1:
        inputs = [
            'renderer/angle_format.py', 'es3_format_type_combinations.json', 'format_map_data.json'
        ]
        outputs = ['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

    input_script = 'format_map_data.json'

    format_map = angle_format.load_json(input_script)

    format_cases = ""

    for format, type_map in sorted(format_map.iteritems()):
        format_cases += parse_format_case(format, type_map)

    combo_data_file = 'es3_format_type_combinations.json'
    es3_combo_data = angle_format.load_json(combo_data_file)
    combo_data = [combo for sublist in es3_combo_data.values() for combo in sublist]

    types = set()
    formats = set()
    combos = {}

    for internal_format, format, type in combo_data:
        types.update([type])
        formats.update([format])
        if format not in combos:
            combos[format] = {}
        if type not in combos[format]:
            combos[format][type] = [internal_format]
        else:
            combos[format][type] += [internal_format]

    es3_format_cases = ""

    for format in sorted(formats):
        es3_format_cases += "        case " + format + ":\n"

    es3_type_cases = ""

    for type in sorted(types):
        es3_type_cases += "        case " + type + ":\n"

    es3_combo_cases = ""

    for format, type_combos in combos.iteritems():
        this_type_cases = ""
        for type, combos in type_combos.iteritems():
            internal_format_cases = ""
            for internal_format in combos:
                internal_format_cases += "                        case " + internal_format + ":\n"

            this_type_cases += template_es3_combo_type_case.format(
                type=type, internal_format_cases=internal_format_cases)

        es3_combo_cases += template_format_case.format(format=format, type_cases=this_type_cases)

    with open('format_map_autogen.cpp', 'wt') as out_file:
        output_cpp = template_cpp.format(
            script_name=sys.argv[0],
            data_source_name=input_script,
            es3_data_source_name=combo_data_file,
            format_cases=format_cases,
            es3_format_cases=es3_format_cases,
            es3_type_cases=es3_type_cases,
            es3_combo_cases=es3_combo_cases)
        out_file.write(output_cpp)
    return 0


if __name__ == '__main__':
    sys.exit(main())

kc3-lang/angle/src/libANGLE/gen_format_map.py

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kc3-lang/angle /src/libANGLE/gen_format_map.py