Vulkan-Hpp/RAII_Samples/OcclusionQuery/OcclusionQuery.cpp

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// Copyright(c) 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 : OcclusionQuery
// Use occlusion query to determine if drawing renders any samples.
#include "../../samples/utils/geometries.hpp"
#include "../../samples/utils/math.hpp"
#include "../utils/shaders.hpp"
#include "../utils/utils.hpp"
#include "SPIRV/GlslangToSpv.h"
#include "vulkan/vulkan_raii.hpp"
#include <iostream>
#include <thread>
static char const * AppName = "OcclusionQuery";
static char const * EngineName = "Vulkan.hpp";
int main( int /*argc*/, char ** /*argv*/ )
{
try
{
std::unique_ptr<vk::raii::Context> context = vk::raii::su::make_unique<vk::raii::Context>();
std::unique_ptr<vk::raii::Instance> instance =
vk::raii::su::makeUniqueInstance( *context, AppName, EngineName, {}, vk::su::getInstanceExtensions() );
#if !defined( NDEBUG )
std::unique_ptr<vk::raii::DebugUtilsMessengerEXT> debugUtilsMessenger =
vk::raii::su::makeUniqueDebugUtilsMessengerEXT( *instance );
#endif
std::unique_ptr<vk::raii::PhysicalDevice> physicalDevice = vk::raii::su::makeUniquePhysicalDevice( *instance );
vk::raii::su::SurfaceData surfaceData( *instance, AppName, vk::Extent2D( 500, 500 ) );
std::pair<uint32_t, uint32_t> graphicsAndPresentQueueFamilyIndex =
vk::raii::su::findGraphicsAndPresentQueueFamilyIndex( *physicalDevice, *surfaceData.surface );
std::unique_ptr<vk::raii::Device> device = vk::raii::su::makeUniqueDevice(
*physicalDevice, graphicsAndPresentQueueFamilyIndex.first, vk::su::getDeviceExtensions() );
std::unique_ptr<vk::raii::CommandPool> commandPool =
vk::raii::su::makeUniqueCommandPool( *device, graphicsAndPresentQueueFamilyIndex.first );
std::unique_ptr<vk::raii::CommandBuffer> commandBuffer =
vk::raii::su::makeUniqueCommandBuffer( *device, *commandPool );
std::unique_ptr<vk::raii::Queue> graphicsQueue =
vk::raii::su::make_unique<vk::raii::Queue>( *device, graphicsAndPresentQueueFamilyIndex.first, 0 );
std::unique_ptr<vk::raii::Queue> presentQueue =
vk::raii::su::make_unique<vk::raii::Queue>( *device, graphicsAndPresentQueueFamilyIndex.second, 0 );
vk::raii::su::SwapChainData swapChainData( *physicalDevice,
*device,
*surfaceData.surface,
surfaceData.extent,
vk::ImageUsageFlagBits::eColorAttachment |
vk::ImageUsageFlagBits::eTransferSrc,
{},
graphicsAndPresentQueueFamilyIndex.first,
graphicsAndPresentQueueFamilyIndex.second );
vk::raii::su::DepthBufferData depthBufferData(
*physicalDevice, *device, vk::Format::eD16Unorm, surfaceData.extent );
vk::raii::su::BufferData uniformBufferData(
*physicalDevice, *device, sizeof( glm::mat4x4 ), vk::BufferUsageFlagBits::eUniformBuffer );
glm::mat4x4 mvpcMatrix = vk::su::createModelViewProjectionClipMatrix( surfaceData.extent );
vk::raii::su::copyToDevice( *uniformBufferData.deviceMemory, mvpcMatrix );
std::unique_ptr<vk::raii::DescriptorSetLayout> descriptorSetLayout = vk::raii::su::makeUniqueDescriptorSetLayout(
*device, { { vk::DescriptorType::eUniformBuffer, 1, vk::ShaderStageFlagBits::eVertex } } );
std::unique_ptr<vk::raii::PipelineLayout> pipelineLayout =
vk::raii::su::makeUniquePipelineLayout( *device, *descriptorSetLayout );
vk::Format colorFormat =
vk::su::pickSurfaceFormat( physicalDevice->getSurfaceFormatsKHR( **surfaceData.surface ) ).format;
std::unique_ptr<vk::raii::RenderPass> renderPass =
vk::raii::su::makeUniqueRenderPass( *device, colorFormat, depthBufferData.format );
glslang::InitializeProcess();
std::unique_ptr<vk::raii::ShaderModule> vertexShaderModule =
vk::raii::su::makeUniqueShaderModule( *device, vk::ShaderStageFlagBits::eVertex, vertexShaderText_PC_C );
std::unique_ptr<vk::raii::ShaderModule> fragmentShaderModule =
vk::raii::su::makeUniqueShaderModule( *device, vk::ShaderStageFlagBits::eFragment, fragmentShaderText_C_C );
glslang::FinalizeProcess();
std::vector<std::unique_ptr<vk::raii::Framebuffer>> framebuffers = vk::raii::su::makeUniqueFramebuffers(
*device, *renderPass, swapChainData.imageViews, depthBufferData.imageView, surfaceData.extent );
vk::raii::su::BufferData vertexBufferData(
*physicalDevice, *device, sizeof( coloredCubeData ), vk::BufferUsageFlagBits::eVertexBuffer );
vk::raii::su::copyToDevice(
*vertexBufferData.deviceMemory, coloredCubeData, sizeof( coloredCubeData ) / sizeof( coloredCubeData[0] ) );
std::unique_ptr<vk::raii::DescriptorPool> descriptorPool =
vk::raii::su::makeUniqueDescriptorPool( *device, { { vk::DescriptorType::eUniformBuffer, 1 } } );
std::unique_ptr<vk::raii::DescriptorSet> descriptorSet =
vk::raii::su::makeUniqueDescriptorSet( *device, *descriptorPool, *descriptorSetLayout );
vk::raii::su::updateDescriptorSets(
*device, *descriptorSet, { { vk::DescriptorType::eUniformBuffer, *uniformBufferData.buffer, nullptr } }, {} );
std::unique_ptr<vk::raii::PipelineCache> pipelineCache =
vk::raii::su::make_unique<vk::raii::PipelineCache>( *device, vk::PipelineCacheCreateInfo() );
std::unique_ptr<vk::raii::Pipeline> graphicsPipeline = vk::raii::su::makeUniqueGraphicsPipeline(
*device,
*pipelineCache,
*vertexShaderModule,
nullptr,
*fragmentShaderModule,
nullptr,
sizeof( coloredCubeData[0] ),
{ { vk::Format::eR32G32B32A32Sfloat, 0 }, { vk::Format::eR32G32Sfloat, 16 } },
vk::FrontFace::eClockwise,
true,
*pipelineLayout,
*renderPass );
/* VULKAN_KEY_START */
std::unique_ptr<vk::raii::Semaphore> imageAcquiredSemaphore =
vk::raii::su::make_unique<vk::raii::Semaphore>( *device, vk::SemaphoreCreateInfo() );
// Get the index of the next available swapchain image:
vk::Result result;
uint32_t imageIndex;
std::tie( result, imageIndex ) =
swapChainData.swapChain->acquireNextImage( vk::su::FenceTimeout, **imageAcquiredSemaphore );
assert( result == vk::Result::eSuccess );
assert( imageIndex < swapChainData.images.size() );
/* Allocate a uniform buffer that will take query results. */
vk::BufferCreateInfo bufferCreateInfo(
{}, 4 * sizeof( uint64_t ), vk::BufferUsageFlagBits::eUniformBuffer | vk::BufferUsageFlagBits::eTransferDst );
std::unique_ptr<vk::raii::Buffer> queryResultBuffer =
vk::raii::su::make_unique<vk::raii::Buffer>( *device, bufferCreateInfo );
vk::MemoryRequirements memoryRequirements = queryResultBuffer->getMemoryRequirements();
uint32_t memoryTypeIndex =
vk::su::findMemoryType( physicalDevice->getMemoryProperties(),
memoryRequirements.memoryTypeBits,
vk::MemoryPropertyFlagBits::eHostVisible | vk::MemoryPropertyFlagBits::eHostCoherent );
vk::MemoryAllocateInfo memoryAllocateInfo( memoryRequirements.size, memoryTypeIndex );
std::unique_ptr<vk::raii::DeviceMemory> queryResultMemory =
vk::raii::su::make_unique<vk::raii::DeviceMemory>( *device, memoryAllocateInfo );
queryResultBuffer->bindMemory( **queryResultMemory, 0 );
vk::QueryPoolCreateInfo queryPoolCreateInfo( {}, vk::QueryType::eOcclusion, 2, {} );
std::unique_ptr<vk::raii::QueryPool> queryPool =
vk::raii::su::make_unique<vk::raii::QueryPool>( *device, queryPoolCreateInfo );
commandBuffer->begin( {} );
commandBuffer->resetQueryPool( **queryPool, 0, 2 );
std::array<vk::ClearValue, 2> clearValues;
clearValues[0].color = vk::ClearColorValue( std::array<float, 4>( { { 0.2f, 0.2f, 0.2f, 0.2f } } ) );
clearValues[1].depthStencil = vk::ClearDepthStencilValue( 1.0f, 0 );
commandBuffer->beginRenderPass(
vk::RenderPassBeginInfo(
**renderPass, **framebuffers[imageIndex], vk::Rect2D( vk::Offset2D(), surfaceData.extent ), clearValues ),
vk::SubpassContents::eInline );
commandBuffer->bindPipeline( vk::PipelineBindPoint::eGraphics, **graphicsPipeline );
commandBuffer->bindDescriptorSets( vk::PipelineBindPoint::eGraphics, **pipelineLayout, 0, { **descriptorSet }, {} );
commandBuffer->bindVertexBuffers( 0, { **vertexBufferData.buffer }, { 0 } );
commandBuffer->setViewport( 0,
vk::Viewport( 0.0f,
0.0f,
static_cast<float>( surfaceData.extent.width ),
static_cast<float>( surfaceData.extent.height ),
0.0f,
1.0f ) );
commandBuffer->setScissor( 0, vk::Rect2D( vk::Offset2D( 0, 0 ), surfaceData.extent ) );
commandBuffer->beginQuery( **queryPool, 0, vk::QueryControlFlags() );
commandBuffer->endQuery( **queryPool, 0 );
commandBuffer->beginQuery( **queryPool, 1, vk::QueryControlFlags() );
commandBuffer->draw( 12 * 3, 1, 0, 0 );
commandBuffer->endRenderPass();
commandBuffer->endQuery( **queryPool, 1 );
commandBuffer->copyQueryPoolResults( **queryPool,
0,
2,
**queryResultBuffer,
0,
sizeof( uint64_t ),
vk::QueryResultFlagBits::e64 | vk::QueryResultFlagBits::eWait );
commandBuffer->end();
std::unique_ptr<vk::raii::Fence> drawFence = vk::raii::su::make_unique<vk::raii::Fence>( *device, vk::FenceCreateInfo() );
vk::PipelineStageFlags waitDestinationStageMask( vk::PipelineStageFlagBits::eColorAttachmentOutput );
vk::SubmitInfo submitInfo( **imageAcquiredSemaphore, waitDestinationStageMask, **commandBuffer );
graphicsQueue->submit( submitInfo, **drawFence );
graphicsQueue->waitIdle();
std::vector<uint64_t> poolResults;
std::tie( result, poolResults ) = queryPool->getResults<uint64_t>(
0, 2, 2 * sizeof( uint64_t ), sizeof( uint64_t ), vk::QueryResultFlagBits::e64 | vk::QueryResultFlagBits::eWait );
switch ( result )
{
case vk::Result::eSuccess: break;
case vk::Result::eNotReady:
std::cout << "vk::Device::getQueryPoolResults returned vk::Result::eNotReady !\n";
break;
default: assert( false ); // an unexpected result is returned !
}
std::cout << "vkGetQueryPoolResults data\n";
std::cout << "samples_passed[0] = " << poolResults[0] << "\n";
std::cout << "samples_passed[1] = " << poolResults[1] << "\n";
/* Read back query result from buffer */
uint64_t * samplesPassedPtr =
static_cast<uint64_t *>( queryResultMemory->mapMemory( 0, memoryRequirements.size, vk::MemoryMapFlags() ) );
std::cout << "vkCmdCopyQueryPoolResults data\n";
std::cout << "samples_passed[0] = " << samplesPassedPtr[0] << "\n";
std::cout << "samples_passed[1] = " << samplesPassedPtr[1] << "\n";
queryResultMemory->unmapMemory();
while ( vk::Result::eTimeout == device->waitForFences( { **drawFence }, VK_TRUE, vk::su::FenceTimeout ) )
;
vk::PresentInfoKHR presentInfoKHR( nullptr, **swapChainData.swapChain, imageIndex );
result = presentQueue->presentKHR( presentInfoKHR );
switch ( result )
{
case vk::Result::eSuccess: break;
case vk::Result::eSuboptimalKHR:
std::cout << "vk::Queue::presentKHR returned vk::Result::eSuboptimalKHR !\n";
break;
default: assert( false ); // an unexpected result is returned !
}
std::this_thread::sleep_for( std::chrono::milliseconds( 1000 ) );
/* VULKAN_KEY_END */
}
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;
}