mirror of
https://github.com/KhronosGroup/Vulkan-Hpp.git
synced 2024-10-14 16:32:17 +00:00
112 lines
4.1 KiB
C++
112 lines
4.1 KiB
C++
// Copyright(c) 2019, NVIDIA CORPORATION. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// VulkanHpp Samples : PhysicalDeviceGroups
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// Get the PhysicalDeviceGroups.
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#include "../utils/utils.hpp"
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#include "vulkan/vulkan.hpp"
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#include <vector>
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static char const * AppName = "PhysicalDeviceGroups";
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static char const * EngineName = "Vulkan.hpp";
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int main( int /*argc*/, char ** /*argv*/ )
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{
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try
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{
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vk::Instance instance = vk::su::createInstance( AppName, EngineName, {}, {}, VK_API_VERSION_1_1 );
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#if !defined( NDEBUG )
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vk::DebugUtilsMessengerEXT debugUtilsMessenger =
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instance.createDebugUtilsMessengerEXT( vk::su::makeDebugUtilsMessengerCreateInfoEXT() );
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#endif
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/* VULKAN_KEY_START */
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std::vector<vk::PhysicalDeviceGroupProperties> groupProperties = instance.enumeratePhysicalDeviceGroups();
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std::cout << std::boolalpha;
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for ( size_t i = 0; i < groupProperties.size(); i++ )
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{
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std::cout << "Group Properties " << i << "\n";
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std::cout << "\t"
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<< "physicalDeviceCount = " << groupProperties[i].physicalDeviceCount << "\n";
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std::cout << "\t"
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<< "physicalDevices:\n";
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for ( size_t j = 0; j < groupProperties[i].physicalDeviceCount; j++ )
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{
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std::cout << "\t\t" << j << " : " << groupProperties[i].physicalDevices[j].getProperties().deviceName << "\n";
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}
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std::cout << "\t"
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<< "subsetAllocation = " << !!groupProperties[i].subsetAllocation << "\n";
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std::cout << "\n";
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if ( 1 < groupProperties[i].physicalDeviceCount )
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{
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vk::PhysicalDevice physicalDevice = groupProperties[i].physicalDevices[0];
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// get the QueueFamilyProperties of the first PhysicalDevice
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std::vector<vk::QueueFamilyProperties> queueFamilyProperties = physicalDevice.getQueueFamilyProperties();
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// get the first index into queueFamiliyProperties which supports graphics
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auto propertyIterator = std::find_if(
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queueFamilyProperties.begin(), queueFamilyProperties.end(), []( vk::QueueFamilyProperties const & qfp ) {
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return qfp.queueFlags & vk::QueueFlagBits::eGraphics;
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} );
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size_t graphicsQueueFamilyIndex = std::distance( queueFamilyProperties.begin(), propertyIterator );
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assert( graphicsQueueFamilyIndex < queueFamilyProperties.size() );
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// create a Device
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float queuePriority = 0.0f;
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vk::DeviceQueueCreateInfo deviceQueueCreateInfo(
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vk::DeviceQueueCreateFlags(), static_cast<uint32_t>( graphicsQueueFamilyIndex ), 1, &queuePriority );
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vk::DeviceCreateInfo deviceCreateInfo( vk::DeviceCreateFlags(), deviceQueueCreateInfo );
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vk::DeviceGroupDeviceCreateInfo deviceGroupDeviceCreateInfo( groupProperties[i].physicalDeviceCount,
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groupProperties[i].physicalDevices );
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deviceCreateInfo.pNext = &deviceGroupDeviceCreateInfo;
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vk::Device device = physicalDevice.createDevice( deviceCreateInfo );
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// ... and destroy it again
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device.destroy();
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}
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}
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/* VULKAN_KEY_END */
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#if !defined( NDEBUG )
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instance.destroyDebugUtilsMessengerEXT( debugUtilsMessenger );
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#endif
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instance.destroy();
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}
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catch ( vk::SystemError & err )
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{
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std::cout << "vk::SystemError: " << err.what() << std::endl;
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exit( -1 );
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}
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catch ( std::exception & err )
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{
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std::cout << "std::exception: " << err.what() << std::endl;
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exit( -1 );
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}
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catch ( ... )
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{
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std::cout << "unknown error\n";
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exit( -1 );
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}
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return 0;
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}
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