mirror of
https://github.com/charles-lunarg/vk-bootstrap.git
synced 2024-11-29 09:54:35 +00:00
c66158e87c
- Replaced GenericFeaturesPNextNode's set function with a template constructor. - Moved validation asserts for extension feature structs into source. - Dispatch table now generates in UTF-8.
295 lines
11 KiB
Python
295 lines
11 KiB
Python
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#
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# generate_dispatch.py
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#
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# Copyright © 2021 Cody Goodson (contact@vibimanx.com)
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
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# documentation files (the “Software”), to deal in the Software without restriction, including without
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# limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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# of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
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# LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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# This file is a part of VkBootstrap
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# https://github.com/charles-lunarg/vk-bootstrap
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# On run, vk.xml is pulled from the master of Khronos's Vulkan-Headers repo and a VkBoostrapDispatch header
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# is generated and placed in VkBoostrap's source directory
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# https://raw.githubusercontent.com/KhronosGroup/Vulkan-Headers/master/registry/vk.xml
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# This script makes use of xmltodict
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# https://github.com/martinblech/xmltodict
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# User will be prompted to install if not detected
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# Exclusions
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exclusions = [
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'vkGetDeviceProcAddr',
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'vkCreateDevice',
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'vkDestroyDevice'
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]
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# Check for/install xmltodict
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import sys
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import subprocess
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import pkg_resources
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import copy
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import codecs
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from string import Template
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installed = {pkg.key for pkg in pkg_resources.working_set}
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xmltodict_missing = {'xmltodict'} - installed
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# Install xmltodict
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if xmltodict_missing:
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val = input("xmltodict is required to run this script. Would you like to install? (y/n): ");
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if(val.lower() == "y"):
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try:
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subprocess.check_call([sys.executable, '-m', 'pip', 'install', 'xmltodict'])
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except subprocess.CalledProcessError as error:
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print("Failed to install xmltodict due to error:");
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print(error);
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input("Press Enter to continue...");
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sys.exit();
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else:
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sys.exit();
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# Fetch fresh vk.xml from Khronos repo
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import urllib.request
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import xmltodict
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try:
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response = urllib.request.urlopen('https://raw.githubusercontent.com/KhronosGroup/Vulkan-Headers/master/registry/vk.xml')
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except urllib.error.URLError as error:
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print("Failed to download vk.xml due to error:");
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print(error.reason)
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input("Press Enter to continue...");
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sys.exit();
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vk_xml_raw = response.read()
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vk_xml = xmltodict.parse(vk_xml_raw,process_namespaces=True)
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command_params = {'return_type': '', 'args': [], 'requirements': [], 'macro_template': Template('')}
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device_commands = {}
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# Gather all device functions/aliases for filtering core/extension function fetching
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commands_node = vk_xml['registry']['commands']['command']
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aliases = {}
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for command_node in commands_node:
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if 'proto' in command_node:
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command_name = command_node['proto']['name']
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new_command_params = copy.deepcopy(command_params)
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new_command_params['return_type'] = command_node['proto']['type']
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if type(command_node['param']) is list:
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new_command_params['args'] = command_node['param']
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else:
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new_command_params['args'] = [command_node['param']]
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if not command_name in exclusions:
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if new_command_params['args'][0]['type'] == 'VkDevice' or new_command_params['args'][0]['type'] == 'VkCommandBuffer' or new_command_params['args'][0]['type'] == 'VkQueue':
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device_commands[command_name] = new_command_params
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elif '@alias' in command_node:
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aliases[command_node['@alias']] = command_node['@name'];
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# Push the alias name as a device function if the alias exists in device commands
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for alias in aliases:
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if alias in device_commands:
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aliased_command_params = device_commands[alias].copy()
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device_commands[aliases[alias]] = aliased_command_params;
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# Add requirements for core PFN's
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features_node = vk_xml['registry']['feature']
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for feature_node in features_node:
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if feature_node['@name'] != 'VK_VERSION_1_0':
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for require_node in feature_node['require']:
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for param_node in require_node:
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if param_node == 'command':
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if type(require_node[param_node]) is not list:
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require_node[param_node] = [require_node[param_node]]
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for param in require_node[param_node]:
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if param['@name'] in device_commands:
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device_commands[param['@name']]['requirements'] += [[feature_node['@name']]]
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# Add requirements for extension PFN's
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extensions_node = vk_xml['registry']['extensions']['extension']
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for extension_node in extensions_node:
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extension_name = extension_node['@name']
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if 'require' in extension_node.keys():
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require_nodes = extension_node['require']
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for require_node in require_nodes:
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requirements = [extension_name];
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if type(require_node) is not str:
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if 'command' in require_node.keys():
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if '@feature' in require_node.keys():
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requirements.append(require_node['@feature'])
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if '@extension' in require_node.keys():
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requirements.append(require_node['@extension'])
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if type(require_node['command']) is not list:
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require_node['command'] = [require_node['command']]
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for command_node in require_node['command']:
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if command_node['@name'] in device_commands:
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device_commands[command_node['@name']]['requirements'] += [requirements]
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elif require_node == 'command':
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if type(require_nodes['command']) is not list:
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require_nodes['command'] = [require_nodes['command']]
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for command_node in require_nodes['command']:
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if command_node['@name'] in device_commands:
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device_commands[command_node['@name']]['requirements'] += [requirements]
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# Generate macro templates
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for command in device_commands:
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macro = ''
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requirements_collection = device_commands[command]['requirements']
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collection_count = len(requirements_collection)
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if collection_count > 0:
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macro = '#if '
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while(collection_count > 0):
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for requirements in requirements_collection:
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requirements_count = len(requirements)
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macro += '('
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for requirement in requirements:
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macro += 'defined({})'.format(requirement)
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requirements_count -= 1
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if requirements_count > 0:
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macro += ' && '
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macro += ')'
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if collection_count > 0:
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collection_count -= 1
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if collection_count > 0:
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macro += ' || '
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macro += '\n$body#endif\n'
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else:
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macro = '$body'
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device_commands[command]['macro_template'] = Template(macro)
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# License
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license = '/* \n'
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license += ' * Copyright © 2021 Cody Goodson (contact@vibimanx.com)\n'
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license += ' * \n'
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license += ' * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated\n'
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license += ' * documentation files (the “Software”), to deal in the Software without restriction, including without\n'
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license += ' * limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies\n'
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license += ' * of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:\n'
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license += ' * \n'
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license += ' * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.\n'
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license += ' * \n'
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license += ' * THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT\n'
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license += ' * LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.\n'
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license += ' * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,\n'
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license += ' * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\n'
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license += ' * \n'
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license += ' */\n\n'
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# Info
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info = '// This file is a part of VkBootstrap\n'
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info += '// https://github.com/charles-lunarg/vk-bootstrap\n\n'
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# # Content
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body = '\n#pragma once\n\n#include <vulkan/vulkan.h>\n\n'
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body += 'namespace vkb {\n\n'
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body += 'struct DispatchTable {\n'
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body += '\tDispatchTable() = default;\n'
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body += '\tDispatchTable(VkDevice device, PFN_vkGetDeviceProcAddr procAddr) : device(device), populated(true) {\n'
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proxy_section = ''
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fp_decl_section = ''
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pfn_load_section = ''
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proxy_template = Template('\t$return_type $proxy_name($args_full) const noexcept {\n\t\t$opt_return$fp_name($args_names);\n\t}\n')
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fp_decl_template = Template('\t$pfn_name $fp_name = nullptr;\n')
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pfn_load_template = Template('\t\t$fp_name = ($pfn_name)procAddr(device, "$command_name");\n')
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for command in device_commands:
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params = device_commands[command]
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# easy stuff out of the way
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return_type = params['return_type']
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if(return_type != 'void'):
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opt_return = 'return '
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else:
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opt_return = ''
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proxy_name = command[2].lower() + command[3:]
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fp_name = 'fp_' + command
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pfn_name = 'PFN_' + command
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# Now for args
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arg_template = Template('$front_mods$arg_type$back_mods$arg_name$array')
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args_full = ''
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args_names = ''
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args_count = len(params['args'])
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i = args_count
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for arg in params['args']:
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front_mods = '';
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back_mods = ' ';
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array = '';
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arg_type = arg['type']
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arg_name = arg['name']
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if '#text' in arg:
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text = arg['#text']
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text = text.replace(' ', '')
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array_index = text.find('[')
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if array_index != -1:
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array = text[array_index:]
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text = text[0:array_index]
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if text == '*':
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front_mods = ''
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back_mods = '* '
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elif text == '**':
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front_mods = ''
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back_mods = '** '
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elif text == 'const*':
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front_mods = 'const '
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back_mods = '* '
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elif text == 'const**':
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front_mods = 'const '
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back_mods = '** '
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elif text == 'const*const*':
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front_mods = 'const '
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back_mods = '* const* '
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if i == args_count and arg_type == 'VkDevice':
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args_names += arg_name
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if i > 0:
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i -= 1
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if i > 0:
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args_names += ', '
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else:
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args_full += arg_template.substitute(front_mods = front_mods, arg_type = arg_type, back_mods = back_mods, arg_name = arg_name, array = array)
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args_names += arg_name
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if i > 0:
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i -= 1
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if i > 0:
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args_full += ', '
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args_names += ', '
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proxy_body = proxy_template.substitute(return_type = return_type, proxy_name = proxy_name, args_full = args_full, opt_return = opt_return, fp_name = fp_name, args_names = args_names)
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fp_decl_body = fp_decl_template.substitute(pfn_name = pfn_name, fp_name = fp_name)
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pfn_load_body = pfn_load_template.substitute(fp_name = fp_name, pfn_name = pfn_name, command_name = command)
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macro_template = params['macro_template']
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proxy_section += macro_template.substitute(body=proxy_body)
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fp_decl_section += macro_template.substitute(body=fp_decl_body)
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pfn_load_section +=macro_template.substitute(body=pfn_load_body)
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body += pfn_load_section
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body += '\t}\n'
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body += proxy_section
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body += fp_decl_section
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body += '\tbool is_populated() const { return populated; }\n'
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body += '\tVkDevice device = VK_NULL_HANDLE;\n'
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body += 'private:\n'
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body += '\t bool populated = false;\n'
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body += '};\n\n'
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body += '} // namespace vkb'
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header = license + info + body
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header_file = codecs.open("../src/VkBootstrapDispatch.h", "w", "utf-8")
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header_file.write(header)
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header_file.close();
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input("Generation finished. Press Enter to continue...") |