Vulkan-Hpp/samples/06_InitDepthBuffer/06_InitDepthBuffer.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 : 06_InitDepthBuffer
// Initialize a depth buffer
#include "../utils/utils.hpp"
#include "vulkan/vulkan.hpp"
#include <iostream>
static char const * AppName = "06_InitDepthBuffer";
static char const * EngineName = "Vulkan.hpp";
int main( int /*argc*/, char ** /*argv*/ )
{
try
{
vk::Instance instance = vk::su::createInstance( AppName, EngineName, {}, vk::su::getInstanceExtensions() );
#if !defined( NDEBUG )
vk::DebugUtilsMessengerEXT debugUtilsMessenger =
instance.createDebugUtilsMessengerEXT( vk::su::makeDebugUtilsMessengerCreateInfoEXT() );
#endif
vk::PhysicalDevice physicalDevice = instance.enumeratePhysicalDevices().front();
vk::su::SurfaceData surfaceData( instance, AppName, vk::Extent2D( 500, 500 ) );
std::pair<uint32_t, uint32_t> graphicsAndPresentQueueFamilyIndex =
vk::su::findGraphicsAndPresentQueueFamilyIndex( physicalDevice, surfaceData.surface );
vk::Device device =
vk::su::createDevice( physicalDevice, graphicsAndPresentQueueFamilyIndex.first, vk::su::getDeviceExtensions() );
/* VULKAN_HPP_KEY_START */
const vk::Format depthFormat = vk::Format::eD16Unorm;
vk::FormatProperties formatProperties = physicalDevice.getFormatProperties( depthFormat );
vk::ImageTiling tiling;
if ( formatProperties.linearTilingFeatures & vk::FormatFeatureFlagBits::eDepthStencilAttachment )
{
tiling = vk::ImageTiling::eLinear;
}
else if ( formatProperties.optimalTilingFeatures & vk::FormatFeatureFlagBits::eDepthStencilAttachment )
{
tiling = vk::ImageTiling::eOptimal;
}
else
{
throw std::runtime_error( "DepthStencilAttachment is not supported for D16Unorm depth format." );
}
vk::ImageCreateInfo imageCreateInfo( vk::ImageCreateFlags(),
vk::ImageType::e2D,
depthFormat,
vk::Extent3D( surfaceData.extent, 1 ),
1,
1,
vk::SampleCountFlagBits::e1,
tiling,
vk::ImageUsageFlagBits::eDepthStencilAttachment );
vk::Image depthImage = device.createImage( imageCreateInfo );
vk::PhysicalDeviceMemoryProperties memoryProperties = physicalDevice.getMemoryProperties();
vk::MemoryRequirements memoryRequirements = device.getImageMemoryRequirements( depthImage );
uint32_t typeBits = memoryRequirements.memoryTypeBits;
uint32_t typeIndex = uint32_t( ~0 );
for ( uint32_t i = 0; i < memoryProperties.memoryTypeCount; i++ )
{
if ( ( typeBits & 1 ) &&
( ( memoryProperties.memoryTypes[i].propertyFlags & vk::MemoryPropertyFlagBits::eDeviceLocal ) ==
vk::MemoryPropertyFlagBits::eDeviceLocal ) )
{
typeIndex = i;
break;
}
typeBits >>= 1;
}
assert( typeIndex != uint32_t( ~0 ) );
vk::DeviceMemory depthMemory =
device.allocateMemory( vk::MemoryAllocateInfo( memoryRequirements.size, typeIndex ) );
device.bindImageMemory( depthImage, depthMemory, 0 );
vk::ComponentMapping componentMapping(
vk::ComponentSwizzle::eR, vk::ComponentSwizzle::eG, vk::ComponentSwizzle::eB, vk::ComponentSwizzle::eA );
vk::ImageSubresourceRange subResourceRange( vk::ImageAspectFlagBits::eDepth, 0, 1, 0, 1 );
vk::ImageView depthView = device.createImageView( vk::ImageViewCreateInfo( vk::ImageViewCreateFlags(),
depthImage,
vk::ImageViewType::e2D,
depthFormat,
componentMapping,
subResourceRange ) );
// destroy depthView, depthMemory, and depthImage
device.destroyImageView( depthView );
device.freeMemory( depthMemory );
device.destroyImage( depthImage );
/* VULKAN_HPP_KEY_END */
device.destroy();
instance.destroySurfaceKHR( surfaceData.surface );
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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;
}