// 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 #include 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 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 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 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( { 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( surfaceData.extent.width ), static_cast( 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( 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( 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; }