| #!/usr/bin/python2 |
| # |
| # Copyright 2018 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. |
| # |
| # registry_xml.py: |
| # Parses information from Khronos registry files.. |
| |
| # List of supported extensions. Add to this list to enable new extensions |
| # available in gl.xml. |
| |
| import sys, os |
| import xml.etree.ElementTree as etree |
| |
| angle_extensions = [ |
| # ANGLE extensions |
| "GL_CHROMIUM_bind_uniform_location", |
| "GL_CHROMIUM_framebuffer_mixed_samples", |
| "GL_CHROMIUM_path_rendering", |
| "GL_CHROMIUM_copy_texture", |
| "GL_CHROMIUM_copy_compressed_texture", |
| "GL_CHROMIUM_lose_context", |
| "GL_ANGLE_request_extension", |
| "GL_ANGLE_robust_client_memory", |
| "GL_ANGLE_copy_texture_3d", |
| ] |
| |
| gles1_extensions = [ |
| # ES1 (Possibly the min set of extensions needed by Android) |
| "GL_OES_draw_texture", |
| "GL_OES_framebuffer_object", |
| "GL_OES_matrix_palette", |
| "GL_OES_point_size_array", |
| "GL_OES_query_matrix", |
| "GL_OES_texture_cube_map", |
| ] |
| |
| supported_extensions = sorted(angle_extensions + gles1_extensions + [ |
| # ES2+ |
| "GL_ANGLE_framebuffer_blit", |
| "GL_ANGLE_framebuffer_multisample", |
| "GL_ANGLE_instanced_arrays", |
| "GL_ANGLE_provoking_vertex", |
| "GL_ANGLE_texture_multisample", |
| "GL_ANGLE_translated_shader_source", |
| "GL_EXT_blend_func_extended", |
| "GL_EXT_debug_marker", |
| "GL_EXT_discard_framebuffer", |
| "GL_EXT_disjoint_timer_query", |
| "GL_EXT_draw_buffers", |
| "GL_EXT_geometry_shader", |
| "GL_EXT_instanced_arrays", |
| "GL_EXT_map_buffer_range", |
| "GL_EXT_memory_object", |
| "GL_EXT_memory_object_fd", |
| "GL_EXT_occlusion_query_boolean", |
| "GL_EXT_robustness", |
| "GL_EXT_semaphore", |
| "GL_EXT_semaphore_fd", |
| "GL_EXT_texture_storage", |
| "GL_KHR_debug", |
| "GL_NV_fence", |
| "GL_OES_EGL_image", |
| "GL_OES_get_program_binary", |
| "GL_OES_mapbuffer", |
| "GL_OES_texture_border_clamp", |
| "GL_OES_texture_storage_multisample_2d_array", |
| "GL_OES_vertex_array_object", |
| "GL_OVR_multiview", |
| "GL_OVR_multiview2", |
| "GL_KHR_parallel_shader_compile", |
| "GL_ANGLE_multi_draw", |
| ]) |
| |
| supported_egl_extensions = [ |
| "EGL_ANDROID_blob_cache", |
| "EGL_ANDROID_get_frame_timestamps", |
| "EGL_ANDROID_presentation_time", |
| "EGL_ANGLE_d3d_share_handle_client_buffer", |
| "EGL_ANGLE_device_creation", |
| "EGL_ANGLE_device_d3d", |
| "EGL_ANGLE_program_cache_control", |
| "EGL_ANGLE_query_surface_pointer", |
| "EGL_ANGLE_stream_producer_d3d_texture", |
| "EGL_ANGLE_surface_d3d_texture_2d_share_handle", |
| "EGL_ANGLE_window_fixed_size", |
| "EGL_CHROMIUM_get_sync_values", |
| "EGL_EXT_create_context_robustness", |
| "EGL_EXT_device_query", |
| "EGL_EXT_platform_base", |
| "EGL_EXT_platform_device", |
| "EGL_KHR_debug", |
| "EGL_KHR_fence_sync", |
| "EGL_KHR_image", |
| "EGL_KHR_stream", |
| "EGL_KHR_stream_consumer_gltexture", |
| "EGL_KHR_swap_buffers_with_damage", |
| "EGL_KHR_wait_sync", |
| "EGL_NV_post_sub_buffer", |
| "EGL_NV_stream_consumer_gltexture_yuv", |
| ] |
| |
| # Strip these suffixes from Context entry point names. NV is excluded (for now). |
| strip_suffixes = ["ANGLE", "EXT", "KHR", "OES", "CHROMIUM"] |
| |
| # The EGL_ANGLE_explicit_context extension is generated differently from other extensions. |
| # Toggle generation here. |
| support_EGL_ANGLE_explicit_context = True |
| |
| def script_relative(path): |
| return os.path.join(os.path.dirname(sys.argv[0]), path) |
| |
| def path_to(folder, file): |
| return os.path.join(script_relative(".."), "src", folder, file) |
| |
| class GLCommandNames: |
| def __init__(self): |
| self.command_names = {} |
| |
| def get_commands(self, version): |
| return self.command_names[version] |
| |
| def get_all_commands(self): |
| cmd_names = [] |
| # Combine all the version lists into a single list |
| for version, version_cmd_names in sorted(self.command_names.iteritems()): |
| cmd_names += version_cmd_names |
| |
| return cmd_names |
| |
| def add_commands(self, version, commands): |
| # Add key if it doesn't exist |
| if version not in self.command_names: |
| self.command_names[version] = [] |
| # Add the commands that aren't duplicates |
| self.command_names[version] += commands |
| |
| class RegistryXML: |
| def __init__(self, xml_file, ext_file = None): |
| tree = etree.parse(script_relative(xml_file)) |
| self.root = tree.getroot() |
| if (ext_file): |
| self._AppendANGLEExts(ext_file) |
| self.all_commands = self.root.findall('commands/command') |
| self.all_cmd_names = GLCommandNames() |
| self.commands = {} |
| |
| def _AppendANGLEExts(self, ext_file): |
| angle_ext_tree = etree.parse(script_relative(ext_file)) |
| angle_ext_root = angle_ext_tree.getroot() |
| |
| insertion_point = self.root.findall("./commands")[0] |
| for command in angle_ext_root.iter('commands'): |
| insertion_point.extend(command) |
| |
| insertion_point = self.root.findall("./extensions")[0] |
| for extension in angle_ext_root.iter('extensions'): |
| insertion_point.extend(extension) |
| |
| def AddCommands(self, feature_name, annotation): |
| xpath = ".//feature[@name='%s']//command" % feature_name |
| commands = [cmd.attrib['name'] for cmd in self.root.findall(xpath)] |
| |
| # Remove commands that have already been processed |
| current_cmds = self.all_cmd_names.get_all_commands() |
| commands = [cmd for cmd in commands if cmd not in current_cmds] |
| |
| self.all_cmd_names.add_commands(annotation, commands) |
| self.commands[annotation] = commands |
| |
| def _ClassifySupport(self, supported): |
| if 'gles2' in supported: |
| return 'gl2ext' |
| elif 'gles1' in supported: |
| return 'glext' |
| elif 'egl' in supported: |
| return 'eglext' |
| elif 'wgl' in supported: |
| return 'wglext' |
| else: |
| assert False |
| return 'unknown' |
| |
| def AddExtensionCommands(self, supported_extensions, apis): |
| # Use a first step to run through the extensions so we can generate them |
| # in sorted order. |
| self.ext_data = {} |
| self.ext_dupes = {} |
| ext_annotations = {} |
| |
| for extension in self.root.findall("extensions/extension"): |
| extension_name = extension.attrib['name'] |
| if not extension_name in supported_extensions: |
| continue |
| |
| ext_annotations[extension_name] = self._ClassifySupport(extension.attrib['supported']) |
| |
| ext_cmd_names = [] |
| |
| # There's an extra step here to filter out 'api=gl' extensions. This |
| # is necessary for handling KHR extensions, which have separate entry |
| # point signatures (without the suffix) for desktop GL. Note that this |
| # extra step is necessary because of Etree's limited Xpath support. |
| for require in extension.findall('require'): |
| if 'api' in require.attrib and require.attrib['api'] not in apis: |
| continue |
| |
| # A special case for EXT_texture_storage |
| filter_out_comment = "Supported only if GL_EXT_direct_state_access is supported" |
| if 'comment' in require.attrib and require.attrib['comment'] == filter_out_comment: |
| continue |
| |
| extension_commands = require.findall('command') |
| ext_cmd_names += [command.attrib['name'] for command in extension_commands] |
| |
| self.ext_data[extension_name] = sorted(ext_cmd_names) |
| |
| for extension_name, ext_cmd_names in sorted(self.ext_data.iteritems()): |
| |
| # Detect and filter duplicate extensions. |
| dupes = [] |
| for ext_cmd in ext_cmd_names: |
| if ext_cmd in self.all_cmd_names.get_all_commands(): |
| dupes.append(ext_cmd) |
| |
| for dupe in dupes: |
| ext_cmd_names.remove(dupe) |
| |
| self.ext_data[extension_name] = sorted(ext_cmd_names) |
| self.ext_dupes[extension_name] = dupes |
| self.all_cmd_names.add_commands(ext_annotations[extension_name], ext_cmd_names) |
