248 lines
8.1 KiB
Python
248 lines
8.1 KiB
Python
COPYRIGHT=u"""
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/* Copyright © 2021 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* 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 (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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"""
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import argparse
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import os
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from collections import OrderedDict, namedtuple
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import xml.etree.ElementTree as et
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from mako.template import Template
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TEMPLATE_C = Template(COPYRIGHT + """
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/* This file generated from ${filename}, don't edit directly. */
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#include "vk_log.h"
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#include "vk_physical_device.h"
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#include "vk_util.h"
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static VkResult
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check_physical_device_features(struct vk_physical_device *physical_device,
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const VkPhysicalDeviceFeatures *supported,
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const VkPhysicalDeviceFeatures *enabled,
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const char *struct_name)
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{
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% for flag in pdev_features:
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if (enabled->${flag} && !supported->${flag})
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return vk_errorf(physical_device, VK_ERROR_FEATURE_NOT_PRESENT,
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"%s.%s not supported", struct_name, "${flag}");
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% endfor
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return VK_SUCCESS;
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}
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VkResult
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vk_physical_device_check_device_features(struct vk_physical_device *physical_device,
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const VkDeviceCreateInfo *pCreateInfo)
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{
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VkPhysicalDevice vk_physical_device =
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vk_physical_device_to_handle(physical_device);
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/* Query the device what kind of features are supported. */
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VkPhysicalDeviceFeatures2 supported_features2 = {
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.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2,
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};
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% for f in features:
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${f.name} supported_${f.name} = { .pNext = NULL };
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% endfor
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vk_foreach_struct_const(feat, pCreateInfo->pNext) {
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VkBaseOutStructure *supported = NULL;
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switch (feat->sType) {
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% for f in features:
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case ${f.vk_type}:
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supported = (VkBaseOutStructure *) &supported_${f.name};
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break;
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% endfor
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default:
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break;
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}
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/* Not a feature struct. */
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if (!supported)
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continue;
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/* Check for cycles in the list */
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if (supported->pNext != NULL || supported->sType != 0)
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return VK_ERROR_UNKNOWN;
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supported->sType = feat->sType;
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__vk_append_struct(&supported_features2, supported);
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}
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physical_device->dispatch_table.GetPhysicalDeviceFeatures2(
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vk_physical_device, &supported_features2);
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if (pCreateInfo->pEnabledFeatures) {
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VkResult result =
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check_physical_device_features(physical_device,
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&supported_features2.features,
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pCreateInfo->pEnabledFeatures,
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"VkPhysicalDeviceFeatures");
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if (result != VK_SUCCESS)
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return result;
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}
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/* Iterate through additional feature structs */
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vk_foreach_struct_const(feat, pCreateInfo->pNext) {
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/* Check each feature boolean for given structure. */
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switch (feat->sType) {
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case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2: {
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const VkPhysicalDeviceFeatures2 *features2 = (const void *)feat;
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VkResult result =
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check_physical_device_features(physical_device,
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&supported_features2.features,
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&features2->features,
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"VkPhysicalDeviceFeatures2.features");
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if (result != VK_SUCCESS)
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return result;
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break;
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}
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% for f in features:
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case ${f.vk_type} : {
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${f.name} *a = &supported_${f.name};
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${f.name} *b = (${f.name} *) feat;
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% for flag in f.vk_flags:
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if (b->${flag} && !a->${flag})
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return vk_errorf(physical_device, VK_ERROR_FEATURE_NOT_PRESENT,
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"%s.%s not supported", "${f.name}", "${flag}");
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% endfor
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break;
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}
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% endfor
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default:
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break;
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}
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} // for each extension structure
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return VK_SUCCESS;
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}
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""", output_encoding='utf-8')
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Feature = namedtuple('Feature', 'name vk_type vk_flags')
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def get_pdev_features(doc):
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for _type in doc.findall('./types/type'):
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if _type.attrib.get('name') != 'VkPhysicalDeviceFeatures':
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continue
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flags = []
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for p in _type.findall('./member'):
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assert p.find('./type').text == 'VkBool32'
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flags.append(p.find('./name').text)
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return flags
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return None
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def get_features(doc):
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features = OrderedDict()
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provisional_structs = set()
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# we want to ignore struct types that are part of provisional extensions
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for _extension in doc.findall('./extensions/extension'):
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if _extension.attrib.get('provisional') != 'true':
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continue
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for p in _extension.findall('./require/type'):
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provisional_structs.add(p.attrib.get('name'))
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# parse all struct types where structextends VkPhysicalDeviceFeatures2
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for _type in doc.findall('./types/type'):
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if _type.attrib.get('category') != 'struct':
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continue
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if _type.attrib.get('structextends') != 'VkPhysicalDeviceFeatures2,VkDeviceCreateInfo':
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continue
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if _type.attrib.get('name') in provisional_structs:
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continue
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# find Vulkan structure type
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for elem in _type:
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if "STRUCTURE_TYPE" in str(elem.attrib):
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s_type = elem.attrib.get('values')
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# collect a list of feature flags
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flags = []
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for p in _type.findall('./member'):
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m_name = p.find('./name').text
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if m_name == 'pNext':
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pass
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elif m_name == 'sType':
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s_type = p.attrib.get('values')
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else:
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assert p.find('./type').text == 'VkBool32'
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flags.append(m_name)
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feat = Feature(name=_type.attrib.get('name'), vk_type=s_type, vk_flags=flags)
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features[_type.attrib.get('name')] = feat
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return features.values()
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def get_features_from_xml(xml_files):
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pdev_features = None
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features = []
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for filename in xml_files:
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doc = et.parse(filename)
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features += get_features(doc)
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if not pdev_features:
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pdev_features = get_pdev_features(doc)
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return pdev_features, features
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument('--out-c', required=True, help='Output C file.')
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parser.add_argument('--xml',
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help='Vulkan API XML file.',
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required=True, action='append', dest='xml_files')
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args = parser.parse_args()
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pdev_features, features = get_features_from_xml(args.xml_files)
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environment = {
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'filename': os.path.basename(__file__),
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'pdev_features': pdev_features,
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'features': features,
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}
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try:
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with open(args.out_c, 'wb') as f:
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f.write(TEMPLATE_C.render(**environment))
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except Exception:
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# In the event there's an error, this imports some helpers from mako
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# to print a useful stack trace and prints it, then exits with
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# status 1, if python is run with debug; otherwise it just raises
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# the exception
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import sys
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from mako import exceptions
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print(exceptions.text_error_template().render(), file=sys.stderr)
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sys.exit(1)
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if __name__ == '__main__':
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main()
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