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#!/usr/bin/python3 -i
#
# Copyright (c) 2015-2025 The Khronos Group Inc.
# Copyright (c) 2015-2025 Valve Corporation
# Copyright (c) 2015-2025 LunarG, Inc.
# Copyright (c) 2015-2025 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
from base_generator import BaseGenerator
from generators.generator_utils import PlatformGuardHelper
class FeatureNotPresentGenerator(BaseGenerator):
def __init__(self):
BaseGenerator.__init__(self)
def generate(self):
out = []
out.append(f'''// *** THIS FILE IS GENERATED - DO NOT EDIT ***
// See {os.path.basename(__file__)} for modifications
/***************************************************************************
*
* Copyright (c) 2025 Valve Corporation
* Copyright (c) 2025 LunarG, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
****************************************************************************/\n\n''')
out.append(self.generateSource())
self.write("".join(out))
def generateSource(self):
out = []
guard_helper = PlatformGuardHelper()
out.append('''
#include "chassis/dispatch_object.h"
#include "generated/dispatch_functions.h"
#include "error_message/error_location.h"
namespace vvl {
namespace dispatch {
void Instance::ReportErrorFeatureNotPresent(VkPhysicalDevice gpu, const VkDeviceCreateInfo &create_info) {
std::stringstream ss;
ss << "returned VK_ERROR_FEATURE_NOT_PRESENT because the following features were not supported on this physical device:\\n";
// First do 1.0 VkPhysicalDeviceFeatures
{
const auto *features2 = vku::FindStructInPNextChain<VkPhysicalDeviceFeatures2>(create_info.pNext);
const VkPhysicalDeviceFeatures &enabling = create_info.pEnabledFeatures ? *create_info.pEnabledFeatures : features2->features;
VkPhysicalDeviceFeatures supported = {};
DispatchGetPhysicalDeviceFeatures(gpu, &supported);
''')
for member in self.vk.structs['VkPhysicalDeviceFeatures'].members:
out.append(f'''if (enabling.{member.name} && !supported.{member.name}) {{
ss << "VkPhysicalDeviceFeatures::{member.name} is not supported\\n";
}}
''')
out.append('}')
out.append('''
VkPhysicalDeviceFeatures2 features_2 = vku::InitStructHelper();
for (const VkBaseInStructure* current = static_cast<const VkBaseInStructure*>(create_info.pNext); current != nullptr; current = current->pNext) {
switch(current->sType) {
''')
feature_structs = self.vk.structs['VkPhysicalDeviceFeatures2'].extendedBy
for extending_struct_name in feature_structs:
# TODO - When script is ran by itself this works fine, but when ran together, "VkPhysicalDeviceFeatures" is somehow added to extendedBy
# Seems to be an issue with the caching, likely the VulkanObject is being overwritten somewhere
if extending_struct_name == 'VkPhysicalDeviceFeatures':
continue
extending_struct = self.vk.structs[extending_struct_name]
out.extend(guard_helper.add_guard(extending_struct.protect))
out.append(f'''case {extending_struct.sType}: {{
{extending_struct_name} supported = vku::InitStructHelper();
features_2.pNext = &supported;
DispatchGetPhysicalDeviceFeatures2(gpu, &features_2);
const {extending_struct_name} *enabling = reinterpret_cast<const {extending_struct_name} *>(current);
''')
for member in [x for x in extending_struct.members if x.type == 'VkBool32']:
out.append(f'''if (enabling->{member.name} && !supported.{member.name}) {{
ss << "{extending_struct_name}::{member.name} is not supported\\n";
}}
''')
out.append('break;\n}\n')
out.extend(guard_helper.add_guard(None))
out.append('''
default:
break;
}
}
Location loc(vvl::Func::vkCreateDevice);
LogWarning("WARNING-vkCreateDevice-FeatureNotPresent", instance, loc, "%s", ss.str().c_str());
} // ReportErrorFeatureNotPresent
} // namespace dispatch
} // namespace vvl
''')
return "".join(out)
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