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#!/usr/bin/env python3
#
# This file is part of libplacebo.
#
# libplacebo is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# libplacebo is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with libplacebo. If not, see <http://www.gnu.org/licenses/>.
import os.path
import re
import sys
import xml.etree.ElementTree as ET
try:
import jinja2
except ModuleNotFoundError:
print('Module \'jinja2\' not found, please install \'python3-Jinja2\' or '
'an equivalent package on your system! Alternatively, run '
'`git submodule update --init` followed by `meson --wipe`.',
file=sys.stderr)
sys.exit(1)
TEMPLATE = jinja2.Environment(
loader = jinja2.FileSystemLoader(searchpath=os.path.dirname(__file__)),
trim_blocks=True,
).get_template('utils_gen.c.j2')
class Obj(object):
def __init__(self, **kwargs):
self.__dict__.update(kwargs)
class VkXML(ET.ElementTree):
def blacklist_block(self, req):
for t in req.iterfind('type'):
self.blacklist_types.add(t.attrib['name'])
for e in req.iterfind('enum'):
self.blacklist_enums.add(e.attrib['name'])
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.blacklist_types = set()
self.blacklist_enums = set()
for f in self.iterfind('feature'):
# Feature block for non-Vulkan API
if not 'vulkan' in f.attrib['api'].split(','):
for r in f.iterfind('require'):
self.blacklist_block(r)
for e in self.iterfind('extensions/extension'):
# Entire extension is unsupported on vulkan or platform-specifid
if not 'vulkan' in e.attrib['supported'].split(',') or 'platform' in e.attrib:
for r in e.iterfind('require'):
self.blacklist_block(r)
continue
# Only individual <require> blocks are API-specific
for r in e.iterfind('require[@api]'):
if not 'vulkan' in r.attrib['api'].split(','):
self.blacklist_block(r)
def findall_enum(self, name):
for e in self.iterfind('enums[@name="{0}"]/enum'.format(name)):
if not 'alias' in e.attrib:
if not e.attrib['name'] in self.blacklist_enums:
yield e
for e in self.iterfind('.//enum[@extends="{0}"]'.format(name)):
if not 'alias' in e.attrib:
if not e.attrib['name'] in self.blacklist_enums:
yield e
def findall_type(self, category):
for t in self.iterfind('types/type[@category="{0}"]'.format(category)):
name = t.attrib.get('name') or t.find('name').text
if name in self.blacklist_types:
continue
yield t
def get_vkenum(registry, enum):
for e in registry.findall_enum(enum):
yield e.attrib['name']
def get_vkobjects(registry):
for t in registry.findall_type('handle'):
if 'objtypeenum' in t.attrib:
yield Obj(enum = t.attrib['objtypeenum'],
name = t.find('name').text)
def get_vkstructs(registry):
for t in registry.findall_type('struct'):
stype = None
for m in t.iterfind('member'):
if m.find('name').text == 'sType':
stype = m
break
if stype is not None and 'values' in stype.attrib:
yield Obj(stype = stype.attrib['values'],
name = t.attrib['name'])
def get_vkaccess(registry):
access = Obj(read = 0, write = 0)
for e in registry.findall_enum('VkAccessFlagBits2'):
if '_READ_' in e.attrib['name']:
access.read |= 1 << int(e.attrib['bitpos'])
if '_WRITE_' in e.attrib['name']:
access.write |= 1 << int(e.attrib['bitpos'])
return access
def get_vkexts(registry):
for e in registry.iterfind('extensions/extension'):
promoted_ver = None
if res := re.match(r'VK_VERSION_(\d)_(\d)', e.attrib.get('promotedto', '')):
promoted_ver = 'VK_API_VERSION_{0}_{1}'.format(res[1], res[2])
yield Obj(name = e.attrib['name'],
promoted_ver = promoted_ver)
def get_vkfeatures(registry):
structs = [];
featuremap = {}; # features -> [struct]
for t in registry.findall_type('struct'):
sname = t.attrib['name']
is_base = sname == 'VkPhysicalDeviceFeatures'
extends = t.attrib.get('structextends', [])
if is_base:
sname = 'VkPhysicalDeviceFeatures2'
stype = 'VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2'
elif not 'VkPhysicalDeviceFeatures2' in extends:
continue
features = []
for f in t.iterfind('member'):
if f.find('type').text == 'VkStructureType':
stype = f.attrib['values']
elif f.find('type').text == 'VkBool32':
fname = f.find('name').text
if is_base:
fname = 'features.' + fname
features.append(Obj(name = fname))
core_ver = None
if res := re.match(r'VkPhysicalDeviceVulkan(\d)(\d)Features', sname):
core_ver = 'VK_API_VERSION_{0}_{1}'.format(res[1], res[2])
struct = Obj(name = sname,
stype = stype,
core_ver = core_ver,
is_base = is_base,
features = features)
structs.append(struct)
for f in features:
featuremap.setdefault(f.name, []).append(struct)
for s in structs:
for f in s.features:
f.replacements = featuremap[f.name]
core_ver = next(( r.core_ver for r in f.replacements if r.core_ver ), None)
for r in f.replacements:
if not r.core_ver:
r.max_ver = core_ver
yield from structs
def find_registry_xml(datadir):
registry_paths = [
'{0}/vulkan/registry/vk.xml'.format(datadir),
'$MINGW_PREFIX/share/vulkan/registry/vk.xml',
'%VULKAN_SDK%/share/vulkan/registry/vk.xml',
'$VULKAN_SDK/share/vulkan/registry/vk.xml',
'/usr/share/vulkan/registry/vk.xml',
]
for p in registry_paths:
path = os.path.expandvars(p)
if os.path.isfile(path):
print('Found vk.xml: {0}'.format(path))
return path
print('Could not find the vulkan registry (vk.xml), please specify its '
'location manually using the -Dvulkan-registry=/path/to/vk.xml '
'option!', file=sys.stderr)
sys.exit(1)
if __name__ == '__main__':
assert len(sys.argv) == 4
datadir = sys.argv[1]
xmlfile = sys.argv[2]
outfile = sys.argv[3]
if not xmlfile or xmlfile == '':
xmlfile = find_registry_xml(datadir)
registry = VkXML(ET.parse(xmlfile))
with open(outfile, 'w') as f:
f.write(TEMPLATE.render(
vkresults = get_vkenum(registry, 'VkResult'),
vkformats = get_vkenum(registry, 'VkFormat'),
vkspaces = get_vkenum(registry, 'VkColorSpaceKHR'),
vkhandles = get_vkenum(registry, 'VkExternalMemoryHandleTypeFlagBits'),
vkalphas = get_vkenum(registry, 'VkCompositeAlphaFlagBitsKHR'),
vktransforms = get_vkenum(registry, 'VkSurfaceTransformFlagBitsKHR'),
vkobjects = get_vkobjects(registry),
vkstructs = get_vkstructs(registry),
vkaccess = get_vkaccess(registry),
vkexts = get_vkexts(registry),
vkfeatures = get_vkfeatures(registry),
))
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