mirror of
https://github.com/KhronosGroup/Vulkan-Hpp.git
synced 2024-10-14 16:32:17 +00:00
77b401d4a9
- mark wrong version as deprecated (C++14) - introduce new version returning ResultValue<vector<T,Allocator>> - introduce new singular version returning ResultValue<T>
264 lines
13 KiB
C++
264 lines
13 KiB
C++
// Copyright(c) 2019, NVIDIA CORPORATION. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// VulkanHpp Samples : OcclusionQuery
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// Use occlusion query to determine if drawing renders any samples.
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#include "../utils/geometries.hpp"
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#include "../utils/math.hpp"
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#include "../utils/shaders.hpp"
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#include "../utils/utils.hpp"
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#include "SPIRV/GlslangToSpv.h"
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#include "vulkan/vulkan.hpp"
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#include <iostream>
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#include <thread>
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static char const * AppName = "OcclusionQuery";
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static char const * EngineName = "Vulkan.hpp";
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int main( int /*argc*/, char ** /*argv*/ )
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{
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try
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{
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vk::UniqueInstance instance = vk::su::createInstance( AppName, EngineName, {}, vk::su::getInstanceExtensions() );
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#if !defined( NDEBUG )
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vk::UniqueDebugUtilsMessengerEXT debugUtilsMessenger = vk::su::createDebugUtilsMessenger( instance );
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#endif
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vk::PhysicalDevice physicalDevice = instance->enumeratePhysicalDevices().front();
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vk::su::SurfaceData surfaceData( instance, AppName, vk::Extent2D( 500, 500 ) );
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std::pair<uint32_t, uint32_t> graphicsAndPresentQueueFamilyIndex =
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vk::su::findGraphicsAndPresentQueueFamilyIndex( physicalDevice, *surfaceData.surface );
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vk::UniqueDevice device =
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vk::su::createDevice( physicalDevice, graphicsAndPresentQueueFamilyIndex.first, vk::su::getDeviceExtensions() );
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vk::UniqueCommandPool commandPool = vk::su::createCommandPool( device, graphicsAndPresentQueueFamilyIndex.first );
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vk::UniqueCommandBuffer commandBuffer = std::move( device
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->allocateCommandBuffersUnique( vk::CommandBufferAllocateInfo(
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commandPool.get(), vk::CommandBufferLevel::ePrimary, 1 ) )
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.front() );
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vk::Queue graphicsQueue = device->getQueue( graphicsAndPresentQueueFamilyIndex.first, 0 );
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vk::Queue presentQueue = device->getQueue( graphicsAndPresentQueueFamilyIndex.second, 0 );
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vk::su::SwapChainData swapChainData( physicalDevice,
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device,
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*surfaceData.surface,
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surfaceData.extent,
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vk::ImageUsageFlagBits::eColorAttachment |
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vk::ImageUsageFlagBits::eTransferSrc,
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vk::UniqueSwapchainKHR(),
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graphicsAndPresentQueueFamilyIndex.first,
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graphicsAndPresentQueueFamilyIndex.second );
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vk::su::DepthBufferData depthBufferData( physicalDevice, device, vk::Format::eD16Unorm, surfaceData.extent );
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vk::su::BufferData uniformBufferData(
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physicalDevice, device, sizeof( glm::mat4x4 ), vk::BufferUsageFlagBits::eUniformBuffer );
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vk::su::copyToDevice(
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device, uniformBufferData.deviceMemory, vk::su::createModelViewProjectionClipMatrix( surfaceData.extent ) );
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vk::UniqueDescriptorSetLayout descriptorSetLayout = vk::su::createDescriptorSetLayout(
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device, { { vk::DescriptorType::eUniformBuffer, 1, vk::ShaderStageFlagBits::eVertex } } );
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vk::UniquePipelineLayout pipelineLayout = device->createPipelineLayoutUnique(
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vk::PipelineLayoutCreateInfo( vk::PipelineLayoutCreateFlags(), *descriptorSetLayout ) );
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vk::UniqueRenderPass renderPass = vk::su::createRenderPass(
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device,
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vk::su::pickSurfaceFormat( physicalDevice.getSurfaceFormatsKHR( surfaceData.surface.get() ) ).format,
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depthBufferData.format );
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glslang::InitializeProcess();
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vk::UniqueShaderModule vertexShaderModule =
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vk::su::createShaderModule( device, vk::ShaderStageFlagBits::eVertex, vertexShaderText_PC_C );
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vk::UniqueShaderModule fragmentShaderModule =
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vk::su::createShaderModule( device, vk::ShaderStageFlagBits::eFragment, fragmentShaderText_C_C );
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glslang::FinalizeProcess();
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std::vector<vk::UniqueFramebuffer> framebuffers = vk::su::createFramebuffers(
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device, renderPass, swapChainData.imageViews, depthBufferData.imageView, surfaceData.extent );
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vk::su::BufferData vertexBufferData(
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physicalDevice, device, sizeof( coloredCubeData ), vk::BufferUsageFlagBits::eVertexBuffer );
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vk::su::copyToDevice( device,
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vertexBufferData.deviceMemory,
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coloredCubeData,
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sizeof( coloredCubeData ) / sizeof( coloredCubeData[0] ) );
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vk::UniqueDescriptorPool descriptorPool =
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vk::su::createDescriptorPool( device, { { vk::DescriptorType::eUniformBuffer, 1 } } );
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vk::UniqueDescriptorSet descriptorSet = std::move(
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device->allocateDescriptorSetsUnique( vk::DescriptorSetAllocateInfo( *descriptorPool, *descriptorSetLayout ) )
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.front() );
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vk::su::updateDescriptorSets(
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device, descriptorSet, { { vk::DescriptorType::eUniformBuffer, uniformBufferData.buffer, {} } }, {} );
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vk::UniquePipelineCache pipelineCache = device->createPipelineCacheUnique( vk::PipelineCacheCreateInfo() );
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vk::UniquePipeline graphicsPipeline = vk::su::createGraphicsPipeline(
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device,
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pipelineCache,
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std::make_pair( *vertexShaderModule, nullptr ),
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std::make_pair( *fragmentShaderModule, nullptr ),
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sizeof( coloredCubeData[0] ),
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{ { vk::Format::eR32G32B32A32Sfloat, 0 }, { vk::Format::eR32G32B32A32Sfloat, 16 } },
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vk::FrontFace::eClockwise,
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true,
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pipelineLayout,
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renderPass );
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/* VULKAN_KEY_START */
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vk::UniqueSemaphore imageAcquiredSemaphore =
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device->createSemaphoreUnique( vk::SemaphoreCreateInfo( vk::SemaphoreCreateFlags() ) );
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// Get the index of the next available swapchain image:
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vk::ResultValue<uint32_t> currentBuffer =
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device->acquireNextImageKHR( swapChainData.swapChain.get(), UINT64_MAX, imageAcquiredSemaphore.get(), nullptr );
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assert( currentBuffer.result == vk::Result::eSuccess );
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assert( currentBuffer.value < framebuffers.size() );
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/* Allocate a uniform buffer that will take query results. */
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vk::UniqueBuffer queryResultBuffer = device->createBufferUnique(
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vk::BufferCreateInfo( vk::BufferCreateFlags(),
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4 * sizeof( uint64_t ),
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vk::BufferUsageFlagBits::eUniformBuffer | vk::BufferUsageFlagBits::eTransferDst ) );
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vk::MemoryRequirements memoryRequirements = device->getBufferMemoryRequirements( queryResultBuffer.get() );
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uint32_t memoryTypeIndex =
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vk::su::findMemoryType( physicalDevice.getMemoryProperties(),
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memoryRequirements.memoryTypeBits,
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vk::MemoryPropertyFlagBits::eHostVisible | vk::MemoryPropertyFlagBits::eHostCoherent );
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vk::UniqueDeviceMemory queryResultMemory =
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device->allocateMemoryUnique( vk::MemoryAllocateInfo( memoryRequirements.size, memoryTypeIndex ) );
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device->bindBufferMemory( queryResultBuffer.get(), queryResultMemory.get(), 0 );
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vk::UniqueQueryPool queryPool = device->createQueryPoolUnique( vk::QueryPoolCreateInfo(
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vk::QueryPoolCreateFlags(), vk::QueryType::eOcclusion, 2, vk::QueryPipelineStatisticFlags() ) );
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commandBuffer->begin( vk::CommandBufferBeginInfo( vk::CommandBufferUsageFlags() ) );
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commandBuffer->resetQueryPool( queryPool.get(), 0, 2 );
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std::array<vk::ClearValue, 2> clearValues;
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clearValues[0].color = vk::ClearColorValue( std::array<float, 4>( { { 0.2f, 0.2f, 0.2f, 0.2f } } ) );
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clearValues[1].depthStencil = vk::ClearDepthStencilValue( 1.0f, 0 );
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commandBuffer->beginRenderPass( vk::RenderPassBeginInfo( renderPass.get(),
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framebuffers[currentBuffer.value].get(),
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vk::Rect2D( vk::Offset2D(), surfaceData.extent ),
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clearValues ),
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vk::SubpassContents::eInline );
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commandBuffer->bindPipeline( vk::PipelineBindPoint::eGraphics, graphicsPipeline.get() );
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commandBuffer->bindDescriptorSets(
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vk::PipelineBindPoint::eGraphics, pipelineLayout.get(), 0, descriptorSet.get(), {} );
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commandBuffer->bindVertexBuffers( 0, *vertexBufferData.buffer, { 0 } );
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commandBuffer->setViewport( 0,
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vk::Viewport( 0.0f,
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0.0f,
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static_cast<float>( surfaceData.extent.width ),
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static_cast<float>( surfaceData.extent.height ),
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0.0f,
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1.0f ) );
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commandBuffer->setScissor( 0, vk::Rect2D( vk::Offset2D( 0, 0 ), surfaceData.extent ) );
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commandBuffer->beginQuery( queryPool.get(), 0, vk::QueryControlFlags() );
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commandBuffer->endQuery( queryPool.get(), 0 );
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commandBuffer->beginQuery( queryPool.get(), 1, vk::QueryControlFlags() );
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commandBuffer->draw( 12 * 3, 1, 0, 0 );
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commandBuffer->endRenderPass();
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commandBuffer->endQuery( queryPool.get(), 1 );
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commandBuffer->copyQueryPoolResults( queryPool.get(),
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0,
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2,
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queryResultBuffer.get(),
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0,
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sizeof( uint64_t ),
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vk::QueryResultFlagBits::e64 | vk::QueryResultFlagBits::eWait );
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commandBuffer->end();
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vk::UniqueFence drawFence = device->createFenceUnique( vk::FenceCreateInfo() );
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vk::PipelineStageFlags waitDestinationStageMask( vk::PipelineStageFlagBits::eColorAttachmentOutput );
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vk::SubmitInfo submitInfo( *imageAcquiredSemaphore, waitDestinationStageMask, *commandBuffer );
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graphicsQueue.submit( submitInfo, drawFence.get() );
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graphicsQueue.waitIdle();
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vk::ResultValue<std::vector<uint64_t>> rv =
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device->getQueryPoolResults<uint64_t>( *queryPool,
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0,
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2,
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2 * sizeof( uint64_t ),
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sizeof( uint64_t ),
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vk::QueryResultFlagBits::e64 | vk::QueryResultFlagBits::eWait );
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switch ( rv.result )
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{
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case vk::Result::eSuccess: break;
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case vk::Result::eNotReady: std::cout << "vk::Device::getQueryPoolResults returned vk::Result::eNotReady !\n";
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default: assert( false ); // an unexpected result is returned !
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}
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std::cout << "vkGetQueryPoolResults data\n";
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std::cout << "samples_passed[0] = " << rv.value[0] << "\n";
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std::cout << "samples_passed[1] = " << rv.value[1] << "\n";
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/* Read back query result from buffer */
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uint64_t * samplesPassedPtr = static_cast<uint64_t *>(
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device->mapMemory( queryResultMemory.get(), 0, memoryRequirements.size, vk::MemoryMapFlags() ) );
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std::cout << "vkCmdCopyQueryPoolResults data\n";
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std::cout << "samples_passed[0] = " << samplesPassedPtr[0] << "\n";
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std::cout << "samples_passed[1] = " << samplesPassedPtr[1] << "\n";
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device->unmapMemory( queryResultMemory.get() );
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while ( vk::Result::eTimeout == device->waitForFences( drawFence.get(), VK_TRUE, vk::su::FenceTimeout ) )
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;
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vk::Result result = presentQueue.presentKHR( vk::PresentInfoKHR( {}, *swapChainData.swapChain, currentBuffer.value ) );
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switch ( result )
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{
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case vk::Result::eSuccess: break;
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case vk::Result::eSuboptimalKHR: std::cout << "vk::Queue::presentKHR returned vk::Result::eSuboptimalKHR !\n";
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default: assert( false ); // an unexpected result is returned !
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}
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std::this_thread::sleep_for( std::chrono::milliseconds( 1000 ) );
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/* VULKAN_KEY_END */
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}
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catch ( vk::SystemError & err )
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{
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std::cout << "vk::SystemError: " << err.what() << std::endl;
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exit( -1 );
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}
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catch ( std::exception & err )
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{
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std::cout << "std::exception: " << err.what() << std::endl;
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exit( -1 );
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}
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catch ( ... )
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{
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std::cout << "unknown error\n";
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exit( -1 );
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}
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return 0;
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}
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