| #!/usr/bin/python2 |
| # |
| # Copyright 2017 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. |
| # |
| # generate_entry_points.py: |
| # Generates the OpenGL bindings and entry point layers for ANGLE. |
| |
| import sys, os, pprint, json |
| import xml.etree.ElementTree as etree |
| from datetime import date |
| |
| # List of supported extensions. Add to this list to enable new extensions |
| # available in gl.xml. |
| # TODO(jmadill): Support extensions not in gl.xml. |
| supported_extensions = sorted([ |
| # ES1 (statically linked by some tests even if we don't support the extension) |
| "GL_OES_point_size_array", |
| "GL_OES_query_matrix", |
| "GL_OES_matrix_palette", |
| "GL_OES_draw_texture", |
| # ES2+ |
| "GL_ANGLE_framebuffer_blit", |
| "GL_ANGLE_framebuffer_multisample", |
| "GL_ANGLE_instanced_arrays", |
| "GL_ANGLE_translated_shader_source", |
| "GL_EXT_debug_marker", |
| "GL_EXT_discard_framebuffer", |
| "GL_EXT_disjoint_timer_query", |
| "GL_EXT_draw_buffers", |
| "GL_EXT_map_buffer_range", |
| "GL_EXT_occlusion_query_boolean", |
| "GL_EXT_robustness", |
| "GL_EXT_texture_storage", |
| "GL_KHR_debug", |
| "GL_NV_fence", |
| "GL_OES_EGL_image", |
| "GL_OES_get_program_binary", |
| "GL_OES_mapbuffer", |
| "GL_OES_vertex_array_object", |
| ]) |
| |
| # This is a list of exceptions for entry points which don't want to have |
| # the EVENT macro. This is required for some debug marker entry points. |
| no_event_marker_exceptions_list = sorted([ |
| "glPushGroupMarkerEXT", |
| "glPopGroupMarkerEXT", |
| "glInsertEventMarkerEXT", |
| ]) |
| |
| # Strip these suffixes from Context entry point names. NV is excluded (for now). |
| strip_suffixes = ["ANGLE", "EXT", "KHR", "OES"] |
| |
| template_entry_point_header = """// GENERATED FILE - DO NOT EDIT. |
| // Generated by {script_name} using data from {data_source_name}. |
| // |
| // Copyright {year} 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. |
| // |
| // entry_points_gles_{annotation_lower}_autogen.h: |
| // Defines the GLES {comment} entry points. |
| |
| #ifndef LIBGLESV2_ENTRY_POINTS_GLES_{annotation_upper}_AUTOGEN_H_ |
| #define LIBGLESV2_ENTRY_POINTS_GLES_{annotation_upper}_AUTOGEN_H_ |
| |
| {includes} |
| |
| namespace gl |
| {{ |
| {entry_points} |
| }} // namespace gl |
| |
| #endif // LIBGLESV2_ENTRY_POINTS_GLES_{annotation_upper}_AUTOGEN_H_ |
| """ |
| |
| template_entry_point_source = """// GENERATED FILE - DO NOT EDIT. |
| // Generated by {script_name} using data from {data_source_name}. |
| // |
| // Copyright {year} 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. |
| // |
| // entry_points_gles_{annotation_lower}_autogen.cpp: |
| // Defines the GLES {comment} entry points. |
| |
| {includes} |
| |
| namespace gl |
| {{ |
| {entry_points}}} // namespace gl |
| """ |
| |
| template_entry_points_enum_header = """// GENERATED FILE - DO NOT EDIT. |
| // Generated by {script_name} using data from {data_source_name}. |
| // |
| // Copyright {year} 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. |
| // |
| // entry_points_enum_autogen.h: |
| // Defines the GLES entry points enumeration. |
| |
| #ifndef LIBGLESV2_ENTRYPOINTSENUM_AUTOGEN_H_ |
| #define LIBGLESV2_ENTRYPOINTSENUM_AUTOGEN_H_ |
| |
| namespace gl |
| {{ |
| enum class EntryPoint |
| {{ |
| {entry_points_list} |
| }}; |
| }} // namespace gl |
| #endif // LIBGLESV2_ENTRY_POINTS_ENUM_AUTOGEN_H_ |
| """ |
| |
| template_entry_point_decl = """ANGLE_EXPORT {return_type}GL_APIENTRY {name}({params});""" |
| |
| template_entry_point_def = """{return_type}GL_APIENTRY {name}({params}) |
| {{ |
| {event_comment}EVENT("({format_params})"{comma_if_needed}{pass_params}); |
| |
| Context *context = {context_getter}(); |
| if (context) |
| {{{packed_gl_enum_conversions} |
| context->gatherParams<EntryPoint::{name}>({internal_params}); |
| |
| if (context->skipValidation() || Validate{name}({validate_params})) |
| {{ |
| {return_if_needed}context->{name_lower_no_suffix}({internal_params}); |
| }} |
| }} |
| {default_return_if_needed}}} |
| """ |
| |
| def script_relative(path): |
| return os.path.join(os.path.dirname(sys.argv[0]), path) |
| |
| tree = etree.parse(script_relative('gl.xml')) |
| root = tree.getroot() |
| commands = root.find(".//commands[@namespace='GL']") |
| |
| with open(script_relative('entry_point_packed_gl_enums.json')) as f: |
| cmd_packed_gl_enums = json.loads(f.read()) |
| |
| def format_entry_point_decl(cmd_name, proto, params): |
| return template_entry_point_decl.format( |
| name = cmd_name[2:], |
| return_type = proto[:-len(cmd_name)], |
| params = ", ".join(params)) |
| |
| def type_name_sep_index(param): |
| space = param.rfind(" ") |
| pointer = param.rfind("*") |
| return max(space, pointer) |
| |
| def just_the_type(param): |
| return param[:type_name_sep_index(param)] |
| |
| def just_the_name(param): |
| return param[type_name_sep_index(param)+1:] |
| |
| def just_the_name_packed(param, reserved_set): |
| name = just_the_name(param) |
| if name in reserved_set: |
| return name + 'Packed' |
| else: |
| return name |
| |
| format_dict = { |
| "GLbitfield": "0x%X", |
| "GLboolean": "%u", |
| "GLclampx": "0x%X", |
| "GLenum": "0x%X", |
| "GLfixed": "0x%X", |
| "GLfloat": "%f", |
| "GLint": "%d", |
| "GLintptr": "%d", |
| "GLshort": "%d", |
| "GLsizei": "%d", |
| "GLsizeiptr": "%d", |
| "GLsync": "0x%0.8p", |
| "GLubyte": "%d", |
| "GLuint": "%u", |
| "GLuint64": "%llu", |
| "GLDEBUGPROC": "0x%0.8p", |
| "GLDEBUGPROCKHR": "0x%0.8p", |
| "GLeglImageOES": "0x%0.8p", |
| } |
| |
| def param_format_string(param): |
| if "*" in param: |
| return param + " = 0x%0.8p" |
| else: |
| type_only = just_the_type(param) |
| if type_only not in format_dict: |
| raise Exception(type_only + " is not a known type in 'format_dict'") |
| |
| return param + " = " + format_dict[type_only] |
| |
| def default_return_value(cmd_name, return_type): |
| if return_type == "void": |
| return "" |
| return "GetDefaultReturnValue<EntryPoint::" + cmd_name[2:] + ", " + return_type + ">()" |
| |
| def get_context_getter_function(cmd_name): |
| if cmd_name == "glGetError": |
| return "GetGlobalContext" |
| else: |
| return "GetValidGlobalContext" |
| |
| template_event_comment = """// Don't run an EVENT() macro on the EXT_debug_marker entry points. |
| // It can interfere with the debug events being set by the caller. |
| // """ |
| |
| def format_entry_point_def(cmd_name, proto, params): |
| packed_gl_enums = cmd_packed_gl_enums.get(cmd_name, {}) |
| internal_params = [just_the_name_packed(param, packed_gl_enums) for param in params] |
| packed_gl_enum_conversions = [] |
| for param in params: |
| name = just_the_name(param) |
| if name in packed_gl_enums: |
| internal_name = name + "Packed" |
| internal_type = packed_gl_enums[name] |
| packed_gl_enum_conversions += ["\n " + internal_type + " " + internal_name +" = FromGLenum<" + |
| internal_type + ">(" + name + ");"] |
| |
| pass_params = [just_the_name(param) for param in params] |
| format_params = [param_format_string(param) for param in params] |
| return_type = proto[:-len(cmd_name)] |
| default_return = default_return_value(cmd_name, return_type.strip()) |
| event_comment = template_event_comment if cmd_name in no_event_marker_exceptions_list else "" |
| name_lower_no_suffix = cmd_name[2:3].lower() + cmd_name[3:] |
| |
| for suffix in strip_suffixes: |
| if name_lower_no_suffix.endswith(suffix): |
| name_lower_no_suffix = name_lower_no_suffix[0:-len(suffix)] |
| |
| return template_entry_point_def.format( |
| name = cmd_name[2:], |
| name_lower_no_suffix = name_lower_no_suffix, |
| return_type = return_type, |
| params = ", ".join(params), |
| internal_params = ", ".join(internal_params), |
| packed_gl_enum_conversions = "".join(packed_gl_enum_conversions), |
| pass_params = ", ".join(pass_params), |
| comma_if_needed = ", " if len(params) > 0 else "", |
| validate_params = ", ".join(["context"] + internal_params), |
| format_params = ", ".join(format_params), |
| return_if_needed = "" if default_return == "" else "return ", |
| default_return_if_needed = "" if default_return == "" else "\n return " + default_return + ";\n", |
| context_getter = get_context_getter_function(cmd_name), |
| event_comment = event_comment) |
| |
| def path_to(folder, file): |
| return os.path.join(script_relative(".."), "src", folder, file) |
| |
| def get_entry_points(all_commands, gles_commands): |
| decls = [] |
| defs = [] |
| for command in all_commands: |
| proto = command.find('proto') |
| cmd_name = proto.find('name').text |
| |
| if cmd_name not in gles_commands: |
| continue |
| |
| param_text = ["".join(param.itertext()) for param in command.findall('param')] |
| proto_text = "".join(proto.itertext()) |
| decls.append(format_entry_point_decl(cmd_name, proto_text, param_text)) |
| defs.append(format_entry_point_def(cmd_name, proto_text, param_text)) |
| |
| return decls, defs |
| |
| def write_file(annotation, comment, template, entry_points, suffix, includes): |
| |
| content = template.format( |
| script_name = os.path.basename(sys.argv[0]), |
| data_source_name = "gl.xml", |
| year = date.today().year, |
| annotation_lower = annotation.lower(), |
| annotation_upper = annotation.upper(), |
| comment = comment, |
| includes = includes, |
| entry_points = entry_points) |
| |
| path = path_to("libGLESv2", "entry_points_gles_{}_autogen.{}".format( |
| annotation.lower(), suffix)) |
| |
| with open(path, "w") as out: |
| out.write(content) |
| out.close() |
| |
| all_commands = root.findall('commands/command') |
| all_cmd_names = [] |
| |
| template_header_includes = """#include <GLES{major}/gl{major}{minor}.h> |
| #include <export.h>""" |
| |
| template_sources_includes = """#include "libGLESv2/entry_points_gles_{}_autogen.h" |
| |
| #include "libANGLE/Context.h" |
| #include "libANGLE/validationES{}{}.h" |
| #include "libGLESv2/global_state.h" |
| """ |
| |
| # First run through the main GLES entry points. |
| for major_version, minor_version in [[1, 0], [2, 0], [3, 0], [3, 1]]: |
| annotation = "{}_{}".format(major_version, minor_version) |
| name_prefix = "GL_ES_VERSION_" |
| if major_version == 1: |
| name_prefix = "GL_VERSION_ES_CM_" |
| comment = annotation.replace("_", ".") |
| gles_xpath = ".//feature[@name='{}{}']//command".format(name_prefix, annotation) |
| gles_commands = [cmd.attrib['name'] for cmd in root.findall(gles_xpath)] |
| |
| # Remove commands that have already been processed |
| gles_commands = [cmd for cmd in gles_commands if cmd not in all_cmd_names] |
| |
| all_cmd_names += gles_commands |
| |
| decls, defs = get_entry_points(all_commands, gles_commands) |
| |
| major_if_not_one = major_version if major_version != 1 else "" |
| minor_if_not_zero = minor_version if minor_version != 0 else "" |
| |
| header_includes = template_header_includes.format( |
| major=major_if_not_one, minor=minor_if_not_zero) |
| |
| # We include the platform.h header since it undefines the conflicting MemoryBarrier macro. |
| if major_version == 3 and minor_version == 1: |
| header_includes += "\n#include \"common/platform.h\"\n" |
| |
| source_includes = template_sources_includes.format( |
| annotation.lower(), major_version,minor_if_not_zero) |
| |
| write_file(annotation, comment, template_entry_point_header, |
| "\n".join(decls), "h", header_includes) |
| write_file(annotation, comment, template_entry_point_source, |
| "\n".join(defs), "cpp", source_includes) |
| |
| # After we finish with the main entry points, we process the extensions. |
| extension_defs = [] |
| extension_decls = [] |
| |
| # Use a first step to run through the extensions so we can generate them |
| # in sorted order. |
| ext_data = {} |
| |
| for extension in root.findall("extensions/extension"): |
| extension_name = extension.attrib['name'] |
| if not extension_name in supported_extensions: |
| continue |
| |
| 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'] != 'gles2' and require.attrib['api'] != 'gles1': |
| continue |
| |
| # Another 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] |
| |
| ext_data[extension_name] = sorted(ext_cmd_names) |
| |
| for extension_name, ext_cmd_names in sorted(ext_data.iteritems()): |
| |
| # Detect and filter duplicate extensions. |
| dupes = [] |
| for ext_cmd in ext_cmd_names: |
| if ext_cmd in all_cmd_names: |
| dupes.append(ext_cmd) |
| |
| for dupe in dupes: |
| ext_cmd_names.remove(dupe) |
| |
| all_cmd_names += ext_cmd_names |
| |
| decls, defs = get_entry_points(all_commands, ext_cmd_names) |
| |
| # Avoid writing out entry points defined by a prior extension. |
| for dupe in dupes: |
| msg = "// {} is already defined.\n".format(dupe[2:]) |
| defs.append(msg) |
| |
| # Write the extension name as a comment before the first EP. |
| comment = "\n// {}".format(extension_name) |
| defs.insert(0, comment) |
| decls.insert(0, comment) |
| |
| extension_defs += defs |
| extension_decls += decls |
| |
| header_includes = template_header_includes.format( |
| major="", minor="") |
| header_includes += """ |
| #include <GLES/gl.h> |
| #include <GLES/glext.h> |
| #include <GLES2/gl2.h> |
| #include <GLES2/gl2ext.h> |
| """ |
| |
| source_includes = template_sources_includes.format("ext", "", "") |
| source_includes += """ |
| #include "libANGLE/validationES.h" |
| #include "libANGLE/validationES1.h" |
| #include "libANGLE/validationES3.h" |
| #include "libANGLE/validationES31.h" |
| """ |
| |
| write_file("ext", "extension", template_entry_point_header, |
| "\n".join([item for item in extension_decls]), "h", header_includes) |
| write_file("ext", "extension", template_entry_point_source, |
| "\n".join([item for item in extension_defs]), "cpp", source_includes) |
| |
| sorted_cmd_names = ["Invalid"] + [cmd[2:] for cmd in sorted(all_cmd_names)] |
| |
| entry_points_enum = template_entry_points_enum_header.format( |
| script_name = os.path.basename(sys.argv[0]), |
| data_source_name = "gl.xml", |
| year = date.today().year, |
| entry_points_list = ",\n".join([" " + cmd for cmd in sorted_cmd_names])) |
| |
| entry_points_enum_header_path = path_to("libANGLE", "entry_points_enum_autogen.h") |
| with open(entry_points_enum_header_path, "w") as out: |
| out.write(entry_points_enum) |
| out.close() |