зеркало из https://github.com/AvaloniaUI/angle.git
310 строки
10 KiB
Python
Executable File
310 строки
10 KiB
Python
Executable File
#!/usr/bin/python3
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#
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# Copyright 2019 The ANGLE Project Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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#
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# gen_gl_enum_utils.py:
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# Generates GLenum value to string mapping for ANGLE
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# NOTE: don't run this script directly. Run scripts/run_code_generation.py.
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import sys
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import os
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import registry_xml
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template_gl_enums_header = """// GENERATED FILE - DO NOT EDIT.
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// Generated by {script_name} using data from {data_source_name}.
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//
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// Copyright 2019 The ANGLE Project Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// gl_enum_utils_autogen.h:
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// mapping of GLenum value to string.
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# ifndef COMMON_GL_ENUM_UTILS_AUTOGEN_H_
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# define COMMON_GL_ENUM_UTILS_AUTOGEN_H_
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namespace gl
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{{
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enum class GLESEnum
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{{
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{gles_enum_groups}
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}};
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enum class BigGLEnum
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{{
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{gl_enum_groups}
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}};
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}} // namespace gl
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# endif // COMMON_GL_ENUM_UTILS_AUTOGEN_H_
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"""
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template_gl_enums_source = """// GENERATED FILE - DO NOT EDIT.
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// Generated by {script_name} using data from {data_source_name}.
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//
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// Copyright 2019 The ANGLE Project Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// gl_enum_utils_autogen.cpp:
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// mapping of GLenum value to string.
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#include "common/gl_enum_utils_autogen.h"
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#include "common/debug.h"
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#include "common/gl_enum_utils.h"
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#include <cstring>
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namespace gl
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{{
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namespace
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{{
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const char *UnknownEnumToString(unsigned int value)
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{{
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constexpr size_t kBufferSize = 64;
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static thread_local char sBuffer[kBufferSize];
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snprintf(sBuffer, kBufferSize, "0x%04X", value);
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return sBuffer;
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}}
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}} // anonymous namespace
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const char *GLenumToString(GLESEnum enumGroup, unsigned int value)
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{{
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switch (enumGroup)
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{{
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{gles_enums_value_to_string_table}
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default:
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return UnknownEnumToString(value);
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}}
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}}
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const char *GLenumToString(BigGLEnum enumGroup, unsigned int value)
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{{
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switch (enumGroup)
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{{
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{gl_enums_value_to_string_table}
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default:
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return UnknownEnumToString(value);
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}}
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}}
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unsigned int StringToGLenum(const char *str)
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{{
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{string_to_enum_table}
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UNREACHABLE();
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return 0;
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}}
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}} // namespace gl
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"""
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template_enum_group_case = """case {api_enum}::{group_name}: {{
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switch (value) {{
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{inner_group_cases}
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default:
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return UnknownEnumToString(value);
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}}
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}}
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"""
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template_enum_value_to_string_case = """case {value}: return {name};"""
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exclude_enum_groups = {'SpecialNumbers'}
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# Special enum groups that don't have any enum values.
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# Add groups here if you get missing group compile errors.
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empty_enum_groups = ['SemaphoreParameterName', 'ShaderBinaryFormat']
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def dump_value_to_string_mapping(enum_groups, api_enum):
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exporting_groups = list()
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for group_name, inner_mapping in enum_groups.items():
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# Convert to pairs and strip out-of-range values.
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string_value_pairs = list(
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filter(lambda x: x[1] >= 0 and x[1] <= 0xFFFFFFFFF, inner_mapping.items()))
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if not string_value_pairs:
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continue
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# sort according values
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string_value_pairs.sort(key=lambda x: (x[1], len(x[0]), x[0]))
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# remove all duplicate values from the pairs list
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# some value may have more than one GLenum mapped to them, such as:
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# GL_DRAW_FRAMEBUFFER_BINDING and GL_FRAMEBUFFER_BINDING
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# GL_BLEND_EQUATION_RGB and GL_BLEND_EQUATION
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# it is safe to output either one of them, for simplity here just
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# choose the shorter one which comes first in the sorted list
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exporting_string_value_pairs = list()
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for index, pair in enumerate(string_value_pairs):
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if index == 0 or pair[1] != string_value_pairs[index - 1][1]:
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exporting_string_value_pairs.append(pair)
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inner_code_block = "\n".join([
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template_enum_value_to_string_case.format(
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value='0x%X' % value,
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name='"%s"' % name,
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) for name, value in exporting_string_value_pairs
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])
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exporting_groups.append((group_name, inner_code_block))
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return "\n".join([
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template_enum_group_case.format(
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api_enum=api_enum,
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group_name=group_name,
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inner_group_cases=inner_code_block,
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) for group_name, inner_code_block in sorted(exporting_groups, key=lambda x: x[0])
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])
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def dump_string_to_value_mapping(enums_and_values):
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templ = """\
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if (strcmp(str, "{enum}") == 0)
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{{
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return {value};
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}}
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"""
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def f(value):
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if value < 0:
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return str(value)
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if value < 0xFFFF:
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return "0x%04X" % value
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if value <= 0xFFFFFFFF:
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return "0x%X" % value
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else:
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return "0xFFFFFFFF"
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items = [templ.format(enum=k, value=f(v)) for (k, v) in sorted(enums_and_values)]
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return ''.join(items)
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def main(header_output_path, source_output_path):
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xml = registry_xml.RegistryXML('gl.xml', 'gl_angle_ext.xml')
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# Compute a list of all GLES enums.
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gles_enums = set()
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bigl_enums = set()
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for feature in xml.root.findall('feature'):
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for require in feature.findall('require'):
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assert 'api' not in require.attrib
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if 'gles' in feature.attrib['api']:
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for enum in require.findall('enum'):
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gles_enums.add(enum.attrib['name'])
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if feature.attrib['api'] == 'gl':
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for enum in require.findall('enum'):
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bigl_enums.add(enum.attrib['name'])
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for extensions in xml.root.findall('extensions'):
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for extension in extensions.findall('extension'):
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if extension.attrib['name'] in registry_xml.supported_extensions:
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for require in extension.findall('require'):
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ext_apis = extension.attrib['supported'].split('|')
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if ('api' not in require.attrib or 'gles' in require.attrib['api']) and (
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'gles' in extension.attrib['supported']):
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for enum in require.findall('enum'):
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gles_enums.add(enum.attrib['name'])
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if ('api' not in require.attrib or
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feature.attrib['api'] == 'gl') and ('gl' in ext_apis):
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for enum in require.findall('enum'):
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bigl_enums.add(enum.attrib['name'])
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# Build a map from GLenum name to its value
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gl_enum_groups = dict()
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gles_enum_groups = dict()
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# Add all enums to default groups
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gl_default_enums = dict()
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gles_default_enums = dict()
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gl_enum_groups[registry_xml.default_enum_group_name] = gl_default_enums
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gles_enum_groups[registry_xml.default_enum_group_name] = gles_default_enums
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enums_and_values = []
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for enums_node in xml.root.findall('enums'):
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for enum in enums_node.findall('enum'):
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enum_name = enum.attrib['name']
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enum_value = int(enum.attrib['value'], base=16)
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enums_and_values.append((enum_name, enum_value))
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if enum_name in gles_enums:
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gles_default_enums[enum_name] = enum_value
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if enum_name in bigl_enums:
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gl_default_enums[enum_name] = enum_value
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if 'group' in enum.attrib:
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for enum_group in enum.attrib['group'].split(','):
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if enum_group in exclude_enum_groups:
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continue
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if enum_name in gles_enums:
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if enum_group not in gles_enum_groups:
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gles_enum_groups[enum_group] = dict()
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gles_enum_groups[enum_group][enum_name] = enum_value
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if enum_name in bigl_enums:
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if enum_group not in gl_enum_groups:
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gl_enum_groups[enum_group] = dict()
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gl_enum_groups[enum_group][enum_name] = enum_value
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for empty_group in empty_enum_groups:
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assert not empty_group in gles_enum_groups or not empty_group in gl_enum_groups, 'Remove %s from the empty groups list, it has enums now.' % empty_group
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if empty_group not in gles_enum_groups:
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gles_enum_groups[empty_group] = dict()
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if empty_group not in gl_enum_groups:
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gl_enum_groups[empty_group] = dict()
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# Write GLenum groups into the header file.
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header_content = template_gl_enums_header.format(
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script_name=os.path.basename(sys.argv[0]),
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data_source_name="gl.xml and gl_angle_ext.xml",
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gles_enum_groups=',\n'.join(sorted(gles_enum_groups.keys())),
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gl_enum_groups=',\n'.join(sorted(gl_enum_groups.keys())))
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header_output_path = registry_xml.script_relative(header_output_path)
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with open(header_output_path, 'w') as f:
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f.write(header_content)
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# Write mapping to source file
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gles_enums_value_to_string_table = dump_value_to_string_mapping(gles_enum_groups, 'GLESEnum')
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gl_enums_value_to_string_table = dump_value_to_string_mapping(gl_enum_groups, 'BigGLEnum')
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string_to_enum_table = dump_string_to_value_mapping(enums_and_values)
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source_content = template_gl_enums_source.format(
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script_name=os.path.basename(sys.argv[0]),
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data_source_name="gl.xml and gl_angle_ext.xml",
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gles_enums_value_to_string_table=gles_enums_value_to_string_table,
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gl_enums_value_to_string_table=gl_enums_value_to_string_table,
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string_to_enum_table=string_to_enum_table,
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)
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source_output_path = registry_xml.script_relative(source_output_path)
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with open(source_output_path, 'w') as f:
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f.write(source_content)
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return 0
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if __name__ == '__main__':
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inputs = [
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'../third_party/OpenGL-Registry/src/xml/gl.xml',
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'gl_angle_ext.xml',
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'registry_xml.py',
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]
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gl_enum_utils_autogen_base_path = '../src/common/gl_enum_utils_autogen'
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outputs = [
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gl_enum_utils_autogen_base_path + '.h',
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gl_enum_utils_autogen_base_path + '.cpp',
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]
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if len(sys.argv) > 1:
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if sys.argv[1] == 'inputs':
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print(','.join(inputs))
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elif sys.argv[1] == 'outputs':
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print(','.join(outputs))
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else:
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sys.exit(
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main(
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registry_xml.script_relative(outputs[0]),
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registry_xml.script_relative(outputs[1])))
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