зеркало из https://github.com/AvaloniaUI/angle.git
302 строки
9.2 KiB
Python
Executable File
302 строки
9.2 KiB
Python
Executable File
#!/usr/bin/python2
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#
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# Copyright 2018 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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# generate_loader.py:
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# Generates dynamic loaders for various binding interfaces.
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# NOTE: don't run this script directly. Run scripts/run_code_generation.py.
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import sys, os, pprint, json
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from datetime import date
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import registry_xml
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def write_header(data_source_name,
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all_cmds,
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api,
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preamble,
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path,
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lib,
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ns="",
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prefix=None,
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export=""):
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file_name = "%s_loader_autogen.h" % api
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header_path = registry_xml.path_to(path, file_name)
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def pre(cmd):
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if prefix == None:
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return cmd
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return prefix + cmd[len(api):]
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with open(header_path, "w") as out:
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var_protos = [
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"%sextern PFN%sPROC %s%s;" % (export, cmd.upper(), ns, pre(cmd)) for cmd in all_cmds
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]
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loader_header = template_loader_h.format(
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script_name=os.path.basename(sys.argv[0]),
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data_source_name=data_source_name,
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year=date.today().year,
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function_pointers="\n".join(var_protos),
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api_upper=api.upper(),
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api_lower=api,
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preamble=preamble,
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export=export,
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lib=lib.upper(),
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load_fn_name="Load%s%s" % (prefix if prefix else "", api.upper()))
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out.write(loader_header)
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out.close()
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def write_source(data_source_name, all_cmds, api, path, ns="", prefix=None, export=""):
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file_name = "%s_loader_autogen.cpp" % api
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source_path = registry_xml.path_to(path, file_name)
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def pre(cmd):
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if prefix == None:
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return cmd
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return prefix + cmd[len(api):]
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with open(source_path, "w") as out:
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var_defs = ["%sPFN%sPROC %s%s;" % (export, cmd.upper(), ns, pre(cmd)) for cmd in all_cmds]
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setter = " %s%s = reinterpret_cast<PFN%sPROC>(loadProc(\"%s\"));"
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setters = [setter % (ns, pre(cmd), cmd.upper(), pre(cmd)) for cmd in all_cmds]
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loader_source = template_loader_cpp.format(
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script_name=os.path.basename(sys.argv[0]),
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data_source_name=data_source_name,
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year=date.today().year,
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function_pointers="\n".join(var_defs),
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set_pointers="\n".join(setters),
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api_upper=api.upper(),
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api_lower=api,
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load_fn_name="Load%s%s" % (prefix if prefix else "", api.upper()))
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out.write(loader_source)
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out.close()
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def gen_libegl_loader():
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data_source_name = "egl.xml and egl_angle_ext.xml"
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xml = registry_xml.RegistryXML("egl.xml", "egl_angle_ext.xml")
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for major_version, minor_version in [[1, 0], [1, 1], [1, 2], [1, 3], [1, 4], [1, 5]]:
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annotation = "{}_{}".format(major_version, minor_version)
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name_prefix = "EGL_VERSION_"
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feature_name = "{}{}".format(name_prefix, annotation)
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xml.AddCommands(feature_name, annotation)
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xml.AddExtensionCommands(registry_xml.supported_egl_extensions, ['egl'])
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all_cmds = xml.all_cmd_names.get_all_commands()
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path = os.path.join("..", "src", "libEGL")
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write_header(data_source_name, all_cmds, "egl", libegl_preamble, path, "LIBEGL", "", "EGL_")
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write_source(data_source_name, all_cmds, "egl", path, "", "EGL_")
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def gen_gl_loader():
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data_source_name = "gl.xml and gl_angle_ext.xml"
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xml = registry_xml.RegistryXML("gl.xml", "gl_angle_ext.xml")
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# First run through the main GLES entry points. Since ES2+ is the primary use
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# case, we go through those first and then add ES1-only APIs at the end.
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for major_version, minor_version in [[2, 0], [3, 0], [3, 1], [1, 0]]:
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annotation = "{}_{}".format(major_version, minor_version)
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name_prefix = "GL_ES_VERSION_"
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is_gles1 = major_version == 1
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if is_gles1:
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name_prefix = "GL_VERSION_ES_CM_"
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feature_name = "{}{}".format(name_prefix, annotation)
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xml.AddCommands(feature_name, annotation)
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xml.AddExtensionCommands(registry_xml.supported_extensions, ['gles2', 'gles1'])
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all_cmds = xml.all_cmd_names.get_all_commands()
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if registry_xml.support_EGL_ANGLE_explicit_context:
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all_cmds += [cmd + "ContextANGLE" for cmd in xml.all_cmd_names.get_all_commands()]
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path = os.path.join("..", "util")
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ex = "ANGLE_UTIL_EXPORT "
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write_header(data_source_name, all_cmds, "gles", util_gles_preamble, path, "UTIL", export=ex)
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write_source(data_source_name, all_cmds, "gles", path, export=ex)
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def gen_egl_loader():
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data_source_name = "egl.xml and egl_angle_ext.xml"
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xml = registry_xml.RegistryXML("egl.xml", "egl_angle_ext.xml")
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for major_version, minor_version in [[1, 0], [1, 1], [1, 2], [1, 3], [1, 4], [1, 5]]:
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annotation = "{}_{}".format(major_version, minor_version)
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name_prefix = "EGL_VERSION_"
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feature_name = "{}{}".format(name_prefix, annotation)
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xml.AddCommands(feature_name, annotation)
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xml.AddExtensionCommands(registry_xml.supported_egl_extensions, ['egl'])
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all_cmds = xml.all_cmd_names.get_all_commands()
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path = os.path.join("..", "util")
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ex = "ANGLE_UTIL_EXPORT "
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write_header(data_source_name, all_cmds, "egl", util_egl_preamble, path, "UTIL", export=ex)
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write_source(data_source_name, all_cmds, "egl", path, export=ex)
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def gen_wgl_loader():
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supported_wgl_extensions = [
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"WGL_ARB_create_context",
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"WGL_ARB_extensions_string",
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"WGL_EXT_swap_control",
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]
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source = "wgl.xml"
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xml = registry_xml.RegistryXML(source)
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for major_version, minor_version in [[1, 0]]:
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annotation = "{}_{}".format(major_version, minor_version)
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name_prefix = "WGL_VERSION_"
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feature_name = "{}{}".format(name_prefix, annotation)
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xml.AddCommands(feature_name, annotation)
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xml.AddExtensionCommands(supported_wgl_extensions, ['wgl'])
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all_cmds = xml.all_cmd_names.get_all_commands()
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path = os.path.join("..", "util", "windows")
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write_header(source, all_cmds, "wgl", util_wgl_preamble, path, "UTIL_WINDOWS", "_")
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write_source(source, all_cmds, "wgl", path, "_")
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def main():
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# Handle inputs/outputs for run_code_generation.py's auto_script
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if len(sys.argv) > 1:
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inputs = [
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'egl.xml',
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'egl_angle_ext.xml',
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'registry_xml.py',
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'wgl.xml',
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]
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outputs = [
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'../src/libEGL/egl_loader_autogen.cpp',
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'../src/libEGL/egl_loader_autogen.h',
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'../util/egl_loader_autogen.cpp',
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'../util/egl_loader_autogen.h',
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'../util/gles_loader_autogen.cpp',
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'../util/gles_loader_autogen.h',
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'../util/windows/wgl_loader_autogen.cpp',
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'../util/windows/wgl_loader_autogen.h',
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]
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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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print('Invalid script parameters')
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return 1
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return 0
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gen_libegl_loader()
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gen_gl_loader()
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gen_egl_loader()
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gen_wgl_loader()
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return 0
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libegl_preamble = """#include <EGL/egl.h>
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#include <EGL/eglext.h>
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"""
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util_gles_preamble = """#if defined(GL_GLES_PROTOTYPES) && GL_GLES_PROTOTYPES
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#error "Don't define GL prototypes if you want to use a loader!"
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#endif // defined(GL_GLES_PROTOTYPES)
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#include "angle_gl.h"
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#include "util/util_export.h"
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"""
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util_egl_preamble = """#include "util/util_export.h"
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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"""
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util_wgl_preamble = """
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#include <WGL/wgl.h>
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#include <GLES2/gl2.h>
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// We add an underscore before each function name to ensure common names like "ChoosePixelFormat"
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// and "SwapBuffers" don't conflict with our function pointers. We can't use a namespace because
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// some functions conflict with preprocessor definitions.
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"""
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template_loader_h = """// 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 {year} 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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// {api_lower}_loader_autogen.h:
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// Simple {api_upper} function loader.
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#ifndef {lib}_{api_upper}_LOADER_AUTOGEN_H_
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#define {lib}_{api_upper}_LOADER_AUTOGEN_H_
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{preamble}
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{function_pointers}
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namespace angle
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{{
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using GenericProc = void (*)();
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using LoadProc = GenericProc (KHRONOS_APIENTRY *)(const char *);
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{export}void {load_fn_name}(LoadProc loadProc);
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}} // namespace angle
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#endif // {lib}_{api_upper}_LOADER_AUTOGEN_H_
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"""
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template_loader_cpp = """// 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 {year} 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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// {api_lower}_loader_autogen.cpp:
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// Simple {api_upper} function loader.
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#include "{api_lower}_loader_autogen.h"
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{function_pointers}
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namespace angle
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{{
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void {load_fn_name}(LoadProc loadProc)
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{{
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{set_pointers}
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}}
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}} // namespace angle
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"""
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if __name__ == '__main__':
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sys.exit(main())
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