mirror of
https://github.com/KhronosGroup/Vulkan-Hpp.git
synced 2024-10-14 16:32:17 +00:00
257 lines
12 KiB
C++
257 lines
12 KiB
C++
// 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 "../utils/geometries.hpp"
|
|
#include "../utils/math.hpp"
|
|
#include "../utils/shaders.hpp"
|
|
#include "../utils/utils.hpp"
|
|
#include "SPIRV/GlslangToSpv.h"
|
|
#include "vulkan/vulkan.hpp"
|
|
|
|
#include <iostream>
|
|
#include <thread>
|
|
|
|
static char const * AppName = "OcclusionQuery";
|
|
static char const * EngineName = "Vulkan.hpp";
|
|
|
|
int main( int /*argc*/, char ** /*argv*/ )
|
|
{
|
|
try
|
|
{
|
|
vk::UniqueInstance instance = vk::su::createInstance( AppName, EngineName, {}, vk::su::getInstanceExtensions() );
|
|
#if !defined( NDEBUG )
|
|
vk::UniqueDebugUtilsMessengerEXT debugUtilsMessenger = vk::su::createDebugUtilsMessenger( instance );
|
|
#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::UniqueDevice device =
|
|
vk::su::createDevice( physicalDevice, graphicsAndPresentQueueFamilyIndex.first, vk::su::getDeviceExtensions() );
|
|
|
|
vk::UniqueCommandPool commandPool = vk::su::createCommandPool( device, graphicsAndPresentQueueFamilyIndex.first );
|
|
vk::UniqueCommandBuffer commandBuffer = std::move( device
|
|
->allocateCommandBuffersUnique( vk::CommandBufferAllocateInfo(
|
|
commandPool.get(), vk::CommandBufferLevel::ePrimary, 1 ) )
|
|
.front() );
|
|
|
|
vk::Queue graphicsQueue = device->getQueue( graphicsAndPresentQueueFamilyIndex.first, 0 );
|
|
vk::Queue presentQueue = device->getQueue( graphicsAndPresentQueueFamilyIndex.second, 0 );
|
|
|
|
vk::su::SwapChainData swapChainData( physicalDevice,
|
|
device,
|
|
*surfaceData.surface,
|
|
surfaceData.extent,
|
|
vk::ImageUsageFlagBits::eColorAttachment |
|
|
vk::ImageUsageFlagBits::eTransferSrc,
|
|
vk::UniqueSwapchainKHR(),
|
|
graphicsAndPresentQueueFamilyIndex.first,
|
|
graphicsAndPresentQueueFamilyIndex.second );
|
|
|
|
vk::su::DepthBufferData depthBufferData( physicalDevice, device, vk::Format::eD16Unorm, surfaceData.extent );
|
|
|
|
vk::su::BufferData uniformBufferData(
|
|
physicalDevice, device, sizeof( glm::mat4x4 ), vk::BufferUsageFlagBits::eUniformBuffer );
|
|
vk::su::copyToDevice(
|
|
device, uniformBufferData.deviceMemory, vk::su::createModelViewProjectionClipMatrix( surfaceData.extent ) );
|
|
|
|
vk::UniqueDescriptorSetLayout descriptorSetLayout = vk::su::createDescriptorSetLayout(
|
|
device, { { vk::DescriptorType::eUniformBuffer, 1, vk::ShaderStageFlagBits::eVertex } } );
|
|
vk::UniquePipelineLayout pipelineLayout = device->createPipelineLayoutUnique(
|
|
vk::PipelineLayoutCreateInfo( vk::PipelineLayoutCreateFlags(), 1, &descriptorSetLayout.get() ) );
|
|
|
|
vk::UniqueRenderPass renderPass = vk::su::createRenderPass(
|
|
device,
|
|
vk::su::pickSurfaceFormat( physicalDevice.getSurfaceFormatsKHR( surfaceData.surface.get() ) ).format,
|
|
depthBufferData.format );
|
|
|
|
glslang::InitializeProcess();
|
|
vk::UniqueShaderModule vertexShaderModule =
|
|
vk::su::createShaderModule( device, vk::ShaderStageFlagBits::eVertex, vertexShaderText_PC_C );
|
|
vk::UniqueShaderModule fragmentShaderModule =
|
|
vk::su::createShaderModule( device, vk::ShaderStageFlagBits::eFragment, fragmentShaderText_C_C );
|
|
glslang::FinalizeProcess();
|
|
|
|
std::vector<vk::UniqueFramebuffer> framebuffers = vk::su::createFramebuffers(
|
|
device, renderPass, swapChainData.imageViews, depthBufferData.imageView, surfaceData.extent );
|
|
|
|
vk::su::BufferData vertexBufferData(
|
|
physicalDevice, device, sizeof( coloredCubeData ), vk::BufferUsageFlagBits::eVertexBuffer );
|
|
vk::su::copyToDevice( device,
|
|
vertexBufferData.deviceMemory,
|
|
coloredCubeData,
|
|
sizeof( coloredCubeData ) / sizeof( coloredCubeData[0] ) );
|
|
|
|
vk::UniqueDescriptorPool descriptorPool =
|
|
vk::su::createDescriptorPool( device, { { vk::DescriptorType::eUniformBuffer, 1 } } );
|
|
vk::UniqueDescriptorSet descriptorSet = std::move(
|
|
device->allocateDescriptorSetsUnique( vk::DescriptorSetAllocateInfo( *descriptorPool, 1, &*descriptorSetLayout ) )
|
|
.front() );
|
|
|
|
vk::su::updateDescriptorSets(
|
|
device,
|
|
descriptorSet,
|
|
{ { vk::DescriptorType::eUniformBuffer, uniformBufferData.buffer, vk::UniqueBufferView() } },
|
|
{} );
|
|
|
|
vk::UniquePipelineCache pipelineCache = device->createPipelineCacheUnique( vk::PipelineCacheCreateInfo() );
|
|
vk::UniquePipeline graphicsPipeline = vk::su::createGraphicsPipeline(
|
|
device,
|
|
pipelineCache,
|
|
std::make_pair( *vertexShaderModule, nullptr ),
|
|
std::make_pair( *fragmentShaderModule, nullptr ),
|
|
sizeof( coloredCubeData[0] ),
|
|
{ { vk::Format::eR32G32B32A32Sfloat, 0 }, { vk::Format::eR32G32B32A32Sfloat, 16 } },
|
|
vk::FrontFace::eClockwise,
|
|
true,
|
|
pipelineLayout,
|
|
renderPass );
|
|
|
|
/* VULKAN_KEY_START */
|
|
|
|
vk::UniqueSemaphore imageAcquiredSemaphore =
|
|
device->createSemaphoreUnique( vk::SemaphoreCreateInfo( vk::SemaphoreCreateFlags() ) );
|
|
|
|
// Get the index of the next available swapchain image:
|
|
vk::ResultValue<uint32_t> currentBuffer =
|
|
device->acquireNextImageKHR( swapChainData.swapChain.get(), UINT64_MAX, imageAcquiredSemaphore.get(), nullptr );
|
|
assert( currentBuffer.result == vk::Result::eSuccess );
|
|
assert( currentBuffer.value < framebuffers.size() );
|
|
|
|
/* Allocate a uniform buffer that will take query results. */
|
|
vk::UniqueBuffer queryResultBuffer = device->createBufferUnique(
|
|
vk::BufferCreateInfo( vk::BufferCreateFlags(),
|
|
4 * sizeof( uint64_t ),
|
|
vk::BufferUsageFlagBits::eUniformBuffer | vk::BufferUsageFlagBits::eTransferDst ) );
|
|
|
|
vk::MemoryRequirements memoryRequirements = device->getBufferMemoryRequirements( queryResultBuffer.get() );
|
|
uint32_t memoryTypeIndex =
|
|
vk::su::findMemoryType( physicalDevice.getMemoryProperties(),
|
|
memoryRequirements.memoryTypeBits,
|
|
vk::MemoryPropertyFlagBits::eHostVisible | vk::MemoryPropertyFlagBits::eHostCoherent );
|
|
vk::UniqueDeviceMemory queryResultMemory =
|
|
device->allocateMemoryUnique( vk::MemoryAllocateInfo( memoryRequirements.size, memoryTypeIndex ) );
|
|
|
|
device->bindBufferMemory( queryResultBuffer.get(), queryResultMemory.get(), 0 );
|
|
|
|
vk::UniqueQueryPool queryPool = device->createQueryPoolUnique( vk::QueryPoolCreateInfo(
|
|
vk::QueryPoolCreateFlags(), vk::QueryType::eOcclusion, 2, vk::QueryPipelineStatisticFlags() ) );
|
|
|
|
commandBuffer->begin( vk::CommandBufferBeginInfo( vk::CommandBufferUsageFlags() ) );
|
|
commandBuffer->resetQueryPool( queryPool.get(), 0, 2 );
|
|
|
|
vk::ClearValue clearValues[2];
|
|
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.get(),
|
|
framebuffers[currentBuffer.value].get(),
|
|
vk::Rect2D( vk::Offset2D(), surfaceData.extent ),
|
|
2,
|
|
clearValues ),
|
|
vk::SubpassContents::eInline );
|
|
|
|
commandBuffer->bindPipeline( vk::PipelineBindPoint::eGraphics, graphicsPipeline.get() );
|
|
commandBuffer->bindDescriptorSets(
|
|
vk::PipelineBindPoint::eGraphics, pipelineLayout.get(), 0, descriptorSet.get(), {} );
|
|
|
|
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.get(), 0, vk::QueryControlFlags() );
|
|
commandBuffer->endQuery( queryPool.get(), 0 );
|
|
|
|
commandBuffer->beginQuery( queryPool.get(), 1, vk::QueryControlFlags() );
|
|
commandBuffer->draw( 12 * 3, 1, 0, 0 );
|
|
commandBuffer->endRenderPass();
|
|
commandBuffer->endQuery( queryPool.get(), 1 );
|
|
|
|
commandBuffer->copyQueryPoolResults( queryPool.get(),
|
|
0,
|
|
2,
|
|
queryResultBuffer.get(),
|
|
0,
|
|
sizeof( uint64_t ),
|
|
vk::QueryResultFlagBits::e64 | vk::QueryResultFlagBits::eWait );
|
|
commandBuffer->end();
|
|
|
|
vk::UniqueFence drawFence = device->createFenceUnique( vk::FenceCreateInfo() );
|
|
|
|
vk::PipelineStageFlags waitDestinationStageMask( vk::PipelineStageFlagBits::eColorAttachmentOutput );
|
|
vk::SubmitInfo submitInfo( 1, &imageAcquiredSemaphore.get(), &waitDestinationStageMask, 1, &commandBuffer.get() );
|
|
graphicsQueue.submit( submitInfo, drawFence.get() );
|
|
|
|
graphicsQueue.waitIdle();
|
|
|
|
uint64_t samplesPassed[2];
|
|
device->getQueryPoolResults( queryPool.get(),
|
|
0,
|
|
2,
|
|
vk::ArrayProxy<uint64_t>( 4, samplesPassed ),
|
|
sizeof( uint64_t ),
|
|
vk::QueryResultFlagBits::e64 | vk::QueryResultFlagBits::eWait );
|
|
|
|
std::cout << "vkGetQueryPoolResults data\n";
|
|
std::cout << "samples_passed[0] = " << samplesPassed[0] << "\n";
|
|
std::cout << "samples_passed[1] = " << samplesPassed[1] << "\n";
|
|
|
|
/* Read back query result from buffer */
|
|
uint64_t * samplesPassedPtr = static_cast<uint64_t *>(
|
|
device->mapMemory( queryResultMemory.get(), 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";
|
|
|
|
device->unmapMemory( queryResultMemory.get() );
|
|
|
|
while ( vk::Result::eTimeout == device->waitForFences( drawFence.get(), VK_TRUE, vk::su::FenceTimeout ) )
|
|
;
|
|
|
|
presentQueue.presentKHR(
|
|
vk::PresentInfoKHR( 0, nullptr, 1, &swapChainData.swapChain.get(), ¤tBuffer.value ) );
|
|
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::runtime_error & err )
|
|
{
|
|
std::cout << "std::runtime_error: " << err.what() << std::endl;
|
|
exit( -1 );
|
|
}
|
|
catch ( ... )
|
|
{
|
|
std::cout << "unknown error\n";
|
|
exit( -1 );
|
|
}
|
|
return 0;
|
|
}
|