Vulkan-Hpp/samples/03_InitDevice/03_InitDevice.cpp

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// Copyright(c) 2018-2019, NVIDIA CORPORATION. All rights reserved.
//
// 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.
//
// VulkanHpp Samples : 03_InitDevice
// Create and destroy a device
#include "../utils/utils.hpp"
#include "vulkan/vulkan.hpp"
#include <iostream>
static char const * AppName = "03_InitDevice";
static char const * EngineName = "Vulkan.hpp";
int main( int /*argc*/, char ** /*argv*/ )
{
try
{
vk::Instance instance = vk::su::createInstance( AppName, EngineName );
#if !defined( NDEBUG )
vk::DebugUtilsMessengerEXT debugUtilsMessenger =
instance.createDebugUtilsMessengerEXT( vk::su::makeDebugUtilsMessengerCreateInfoEXT() );
#endif
vk::PhysicalDevice physicalDevice = instance.enumeratePhysicalDevices().front();
/* VULKAN_HPP_KEY_START */
// get the QueueFamilyProperties of the first PhysicalDevice
std::vector<vk::QueueFamilyProperties> queueFamilyProperties = physicalDevice.getQueueFamilyProperties();
// get the first index into queueFamiliyProperties which supports graphics
auto propertyIterator = std::find_if(
queueFamilyProperties.begin(), queueFamilyProperties.end(), []( vk::QueueFamilyProperties const & qfp ) {
return qfp.queueFlags & vk::QueueFlagBits::eGraphics;
} );
size_t graphicsQueueFamilyIndex = std::distance( queueFamilyProperties.begin(), propertyIterator );
assert( graphicsQueueFamilyIndex < queueFamilyProperties.size() );
// create a Device
float queuePriority = 0.0f;
vk::DeviceQueueCreateInfo deviceQueueCreateInfo(
vk::DeviceQueueCreateFlags(), static_cast<uint32_t>( graphicsQueueFamilyIndex ), 1, &queuePriority );
vk::Device device =
physicalDevice.createDevice( vk::DeviceCreateInfo( vk::DeviceCreateFlags(), deviceQueueCreateInfo ) );
// destroy the device
device.destroy();
/* VULKAN_HPP_KEY_END */
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#if !defined( NDEBUG )
instance.destroyDebugUtilsMessengerEXT( debugUtilsMessenger );
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#endif
instance.destroy();
}
catch ( vk::SystemError & err )
{
std::cout << "vk::SystemError: " << err.what() << std::endl;
exit( -1 );
}
catch ( std::exception & err )
{
std::cout << "std::exception: " << err.what() << std::endl;
exit( -1 );
}
catch ( ... )
{
std::cout << "unknown error\n";
exit( -1 );
}
return 0;
}