8cb518ba54
* Started work on a timeline semaphore sample * Properly increas timeline semaphore value * Added timeline semaphore sample to readm * Code cleanup, comments * Removed toto * Added android build files for timeline semaphore sample
674 lines
28 KiB
C++
674 lines
28 KiB
C++
/*
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* Vulkan Example - Using timeline semaphores
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*
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* Based on the compute n-nbody sample, this sample replaces multiple semaphores with a single timeline semaphore
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*
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* Copyright (C) 2024 by Sascha Willems - www.saschawillems.de
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*
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* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
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*/
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#include "vulkanexamplebase.h"
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#if defined(__ANDROID__)
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// Lower particle count on Android for performance reasons
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#define PARTICLES_PER_ATTRACTOR 3 * 1024
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#else
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#define PARTICLES_PER_ATTRACTOR 4 * 1024
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#endif
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class VulkanExample : public VulkanExampleBase
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{
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public:
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struct Textures {
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vks::Texture2D particle;
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vks::Texture2D gradient;
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} textures{};
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// Particle Definition
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struct Particle {
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glm::vec4 pos;
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glm::vec4 vel;
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};
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uint32_t numParticles{ 0 };
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vks::Buffer storageBuffer;
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// Resources for the graphics part of the example
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struct Graphics {
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uint32_t queueFamilyIndex;
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VkDescriptorSetLayout descriptorSetLayout;
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VkDescriptorSet descriptorSet;
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VkPipelineLayout pipelineLayout;
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VkPipeline pipeline;
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struct UniformData {
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glm::mat4 projection;
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glm::mat4 view;
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glm::vec2 screenDim;
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} uniformData;
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vks::Buffer uniformBuffer;
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} graphics{};
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// Resources for the compute part of the example
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struct Compute {
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uint32_t queueFamilyIndex;
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VkQueue queue;
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VkCommandPool commandPool;
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VkCommandBuffer commandBuffer;
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VkDescriptorSetLayout descriptorSetLayout;
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VkDescriptorSet descriptorSet;
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VkPipelineLayout pipelineLayout;
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VkPipeline pipelineCalculate;
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VkPipeline pipelineIntegrate;
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struct UniformData {
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float deltaT{ 0.0f };
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int32_t particleCount{ 0 };
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float gravity{ 0.002f };
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float power{ 0.75f };
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float soften{ 0.05f };
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} uniformData;
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vks::Buffer uniformBuffer;
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} compute{};
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// Along with the actual semaphore we also need to track the increasing value of the timeline,
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// so we store both in a single struct
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struct TimeLineSemaphore {
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VkSemaphore handle{ VK_NULL_HANDLE };
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uint64_t value{ 0 };
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} timeLineSemaphore;
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VkPhysicalDeviceTimelineSemaphoreFeaturesKHR enabledTimelineSemaphoreFeaturesKHR{};
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VulkanExample() : VulkanExampleBase()
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{
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title = "Timeline semaphores";
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camera.type = Camera::CameraType::lookat;
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camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 512.0f);
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camera.setRotation(glm::vec3(-26.0f, 75.0f, 0.0f));
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camera.setTranslation(glm::vec3(0.0f, 0.0f, -14.0f));
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camera.movementSpeed = 2.5f;
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enabledInstanceExtensions.push_back(VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME);
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enabledDeviceExtensions.push_back(VK_KHR_TIMELINE_SEMAPHORE_EXTENSION_NAME);
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enabledTimelineSemaphoreFeaturesKHR.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_TIMELINE_SEMAPHORE_FEATURES_KHR;
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enabledTimelineSemaphoreFeaturesKHR.timelineSemaphore = VK_TRUE;
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deviceCreatepNextChain = &enabledTimelineSemaphoreFeaturesKHR;
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}
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~VulkanExample()
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{
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if (device) {
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vkDestroySemaphore(device, timeLineSemaphore.handle, nullptr);
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// Graphics
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graphics.uniformBuffer.destroy();
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vkDestroyPipeline(device, graphics.pipeline, nullptr);
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vkDestroyPipelineLayout(device, graphics.pipelineLayout, nullptr);
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vkDestroyDescriptorSetLayout(device, graphics.descriptorSetLayout, nullptr);
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// Compute
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compute.uniformBuffer.destroy();
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vkDestroyPipelineLayout(device, compute.pipelineLayout, nullptr);
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vkDestroyDescriptorSetLayout(device, compute.descriptorSetLayout, nullptr);
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vkDestroyPipeline(device, compute.pipelineCalculate, nullptr);
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vkDestroyPipeline(device, compute.pipelineIntegrate, nullptr);
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vkDestroyCommandPool(device, compute.commandPool, nullptr);
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storageBuffer.destroy();
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textures.particle.destroy();
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textures.gradient.destroy();
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}
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}
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void loadAssets()
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{
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textures.particle.loadFromFile(getAssetPath() + "textures/particle01_rgba.ktx", VK_FORMAT_R8G8B8A8_UNORM, vulkanDevice, queue);
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textures.gradient.loadFromFile(getAssetPath() + "textures/particle_gradient_rgba.ktx", VK_FORMAT_R8G8B8A8_UNORM, vulkanDevice, queue);
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}
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void buildCommandBuffers()
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{
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VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
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VkClearValue clearValues[2];
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clearValues[0].color = { {0.0f, 0.0f, 0.0f, 1.0f} };
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clearValues[1].depthStencil = { 1.0f, 0 };
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VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
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renderPassBeginInfo.renderPass = renderPass;
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renderPassBeginInfo.renderArea.offset.x = 0;
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renderPassBeginInfo.renderArea.offset.y = 0;
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renderPassBeginInfo.renderArea.extent.width = width;
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renderPassBeginInfo.renderArea.extent.height = height;
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renderPassBeginInfo.clearValueCount = 2;
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renderPassBeginInfo.pClearValues = clearValues;
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for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
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{
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// Set target frame buffer
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renderPassBeginInfo.framebuffer = frameBuffers[i];
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VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
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// Acquire barrier
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if (graphics.queueFamilyIndex != compute.queueFamilyIndex)
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{
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VkBufferMemoryBarrier buffer_barrier =
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{
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VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER,
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nullptr,
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0,
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VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT,
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compute.queueFamilyIndex,
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graphics.queueFamilyIndex,
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storageBuffer.buffer,
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0,
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storageBuffer.size
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};
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vkCmdPipelineBarrier(
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drawCmdBuffers[i],
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VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
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VK_PIPELINE_STAGE_VERTEX_INPUT_BIT,
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0,
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0, nullptr,
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1, &buffer_barrier,
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0, nullptr);
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}
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// Draw the particle system using the update vertex buffer
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vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
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VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
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vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
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VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
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vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
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vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, graphics.pipeline);
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vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, graphics.pipelineLayout, 0, 1, &graphics.descriptorSet, 0, nullptr);
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VkDeviceSize offsets[1] = { 0 };
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vkCmdBindVertexBuffers(drawCmdBuffers[i], 0, 1, &storageBuffer.buffer, offsets);
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vkCmdDraw(drawCmdBuffers[i], numParticles, 1, 0, 0);
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drawUI(drawCmdBuffers[i]);
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vkCmdEndRenderPass(drawCmdBuffers[i]);
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// Release barrier
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if (graphics.queueFamilyIndex != compute.queueFamilyIndex)
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{
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VkBufferMemoryBarrier buffer_barrier =
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{
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VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER,
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nullptr,
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VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT,
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0,
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graphics.queueFamilyIndex,
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compute.queueFamilyIndex,
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storageBuffer.buffer,
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0,
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storageBuffer.size
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};
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vkCmdPipelineBarrier(
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drawCmdBuffers[i],
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VK_PIPELINE_STAGE_VERTEX_INPUT_BIT,
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VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT,
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0,
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0, nullptr,
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1, &buffer_barrier,
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0, nullptr);
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}
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VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
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}
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}
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void buildComputeCommandBuffer()
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{
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VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
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VK_CHECK_RESULT(vkBeginCommandBuffer(compute.commandBuffer, &cmdBufInfo));
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// Acquire barrier
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if (graphics.queueFamilyIndex != compute.queueFamilyIndex)
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{
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VkBufferMemoryBarrier buffer_barrier =
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{
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VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER,
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nullptr,
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0,
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VK_ACCESS_SHADER_WRITE_BIT,
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graphics.queueFamilyIndex,
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compute.queueFamilyIndex,
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storageBuffer.buffer,
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0,
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storageBuffer.size
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};
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vkCmdPipelineBarrier(
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compute.commandBuffer,
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VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
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VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT,
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0,
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0, nullptr,
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1, &buffer_barrier,
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0, nullptr);
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}
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// First pass: Calculate particle movement
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// -------------------------------------------------------------------------------------------------------
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vkCmdBindPipeline(compute.commandBuffer, VK_PIPELINE_BIND_POINT_COMPUTE, compute.pipelineCalculate);
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vkCmdBindDescriptorSets(compute.commandBuffer, VK_PIPELINE_BIND_POINT_COMPUTE, compute.pipelineLayout, 0, 1, &compute.descriptorSet, 0, 0);
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vkCmdDispatch(compute.commandBuffer, numParticles / 256, 1, 1);
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// Add memory barrier to ensure that the computer shader has finished writing to the buffer
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VkBufferMemoryBarrier bufferBarrier = vks::initializers::bufferMemoryBarrier();
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bufferBarrier.buffer = storageBuffer.buffer;
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bufferBarrier.size = storageBuffer.descriptor.range;
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bufferBarrier.srcAccessMask = VK_ACCESS_SHADER_WRITE_BIT;
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bufferBarrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
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// Transfer ownership if compute and graphics queue family indices differ
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bufferBarrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
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bufferBarrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
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vkCmdPipelineBarrier(
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compute.commandBuffer,
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VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT,
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VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT,
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VK_FLAGS_NONE,
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0, nullptr,
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1, &bufferBarrier,
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0, nullptr);
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// Second pass: Integrate particles
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// -------------------------------------------------------------------------------------------------------
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vkCmdBindPipeline(compute.commandBuffer, VK_PIPELINE_BIND_POINT_COMPUTE, compute.pipelineIntegrate);
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vkCmdDispatch(compute.commandBuffer, numParticles / 256, 1, 1);
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// Release barrier
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if (graphics.queueFamilyIndex != compute.queueFamilyIndex)
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{
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VkBufferMemoryBarrier buffer_barrier =
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{
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VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER,
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nullptr,
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VK_ACCESS_SHADER_WRITE_BIT,
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0,
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compute.queueFamilyIndex,
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graphics.queueFamilyIndex,
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storageBuffer.buffer,
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0,
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storageBuffer.size
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};
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vkCmdPipelineBarrier(
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compute.commandBuffer,
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VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT,
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VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT,
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0,
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0, nullptr,
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1, &buffer_barrier,
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0, nullptr);
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}
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vkEndCommandBuffer(compute.commandBuffer);
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}
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// Setup and fill the compute shader storage buffers containing the particles
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void prepareStorageBuffers()
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{
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// We mark a few particles as attractors that move along a given path, these will pull in the other particles
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std::vector<glm::vec3> attractors = {
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glm::vec3(5.0f, 0.0f, 0.0f),
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glm::vec3(-5.0f, 0.0f, 0.0f),
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glm::vec3(0.0f, 0.0f, 5.0f),
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glm::vec3(0.0f, 0.0f, -5.0f),
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glm::vec3(0.0f, 4.0f, 0.0f),
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glm::vec3(0.0f, -8.0f, 0.0f),
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};
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numParticles = static_cast<uint32_t>(attractors.size()) * PARTICLES_PER_ATTRACTOR;
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// Initial particle positions
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std::vector<Particle> particleBuffer(numParticles);
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std::default_random_engine rndEngine(benchmark.active ? 0 : (unsigned)time(nullptr));
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std::normal_distribution<float> rndDist(0.0f, 1.0f);
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for (uint32_t i = 0; i < static_cast<uint32_t>(attractors.size()); i++)
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{
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for (uint32_t j = 0; j < PARTICLES_PER_ATTRACTOR; j++)
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{
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Particle& particle = particleBuffer[i * PARTICLES_PER_ATTRACTOR + j];
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// First particle in group as heavy center of gravity
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if (j == 0)
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{
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particle.pos = glm::vec4(attractors[i] * 1.5f, 90000.0f);
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particle.vel = glm::vec4(glm::vec4(0.0f));
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}
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else
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{
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// Position
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glm::vec3 position(attractors[i] + glm::vec3(rndDist(rndEngine), rndDist(rndEngine), rndDist(rndEngine)) * 0.75f);
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float len = glm::length(glm::normalize(position - attractors[i]));
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position.y *= 2.0f - (len * len);
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// Velocity
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glm::vec3 angular = glm::vec3(0.5f, 1.5f, 0.5f) * (((i % 2) == 0) ? 1.0f : -1.0f);
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glm::vec3 velocity = glm::cross((position - attractors[i]), angular) + glm::vec3(rndDist(rndEngine), rndDist(rndEngine), rndDist(rndEngine) * 0.025f);
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float mass = (rndDist(rndEngine) * 0.5f + 0.5f) * 75.0f;
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particle.pos = glm::vec4(position, mass);
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particle.vel = glm::vec4(velocity, 0.0f);
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}
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// Color gradient offset
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particle.vel.w = (float)i * 1.0f / static_cast<uint32_t>(attractors.size());
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}
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}
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compute.uniformData.particleCount = numParticles;
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VkDeviceSize storageBufferSize = particleBuffer.size() * sizeof(Particle);
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// Staging
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vks::Buffer stagingBuffer;
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vulkanDevice->createBuffer(VK_BUFFER_USAGE_TRANSFER_SRC_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, &stagingBuffer, storageBufferSize, particleBuffer.data());
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vulkanDevice->createBuffer(VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_STORAGE_BUFFER_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, &storageBuffer, storageBufferSize);
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// Copy from staging buffer to storage buffer
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VkCommandBuffer copyCmd = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
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VkBufferCopy copyRegion = {};
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copyRegion.size = storageBufferSize;
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vkCmdCopyBuffer(copyCmd, stagingBuffer.buffer, storageBuffer.buffer, 1, ©Region);
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// Execute a transfer barrier to the compute queue, if necessary
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if (graphics.queueFamilyIndex != compute.queueFamilyIndex)
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{
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VkBufferMemoryBarrier buffer_barrier =
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{
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VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER,
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nullptr,
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VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT,
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0,
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graphics.queueFamilyIndex,
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compute.queueFamilyIndex,
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storageBuffer.buffer,
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0,
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storageBuffer.size
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};
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vkCmdPipelineBarrier(
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copyCmd,
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VK_PIPELINE_STAGE_VERTEX_INPUT_BIT,
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VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT,
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0,
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0, nullptr,
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1, &buffer_barrier,
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0, nullptr);
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}
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vulkanDevice->flushCommandBuffer(copyCmd, queue, true);
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stagingBuffer.destroy();
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}
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void prepareGraphics()
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{
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// Vertex shader uniform buffer block
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vulkanDevice->createBuffer(VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, &graphics.uniformBuffer, sizeof(Graphics::UniformData));
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VK_CHECK_RESULT(graphics.uniformBuffer.map());
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// Descriptor pool
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std::vector<VkDescriptorPoolSize> poolSizes = {
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2),
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1),
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vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 2)
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};
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VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, 2);
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VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
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// Descriptor layout
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std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings;
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setLayoutBindings = {
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vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 0),
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vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, 1),
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vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 2),
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};
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VkDescriptorSetLayoutCreateInfo descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
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VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &graphics.descriptorSetLayout));
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// Descriptor set
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VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &graphics.descriptorSetLayout, 1);
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VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &graphics.descriptorSet));
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std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
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vks::initializers::writeDescriptorSet(graphics.descriptorSet, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 0, &textures.particle.descriptor),
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vks::initializers::writeDescriptorSet(graphics.descriptorSet, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1, &textures.gradient.descriptor),
|
|
vks::initializers::writeDescriptorSet(graphics.descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2, &graphics.uniformBuffer.descriptor),
|
|
};
|
|
vkUpdateDescriptorSets(device, static_cast<uint32_t>(writeDescriptorSets.size()), writeDescriptorSets.data(), 0, nullptr);
|
|
|
|
// Pipeline layout
|
|
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&graphics.descriptorSetLayout, 1);
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &graphics.pipelineLayout));
|
|
|
|
// Pipeline
|
|
VkPipelineInputAssemblyStateCreateInfo inputAssemblyState = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_POINT_LIST, 0, VK_FALSE);
|
|
VkPipelineRasterizationStateCreateInfo rasterizationState = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_NONE, VK_FRONT_FACE_COUNTER_CLOCKWISE, 0);
|
|
VkPipelineColorBlendAttachmentState blendAttachmentState = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
|
|
VkPipelineColorBlendStateCreateInfo colorBlendState = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentState);
|
|
VkPipelineDepthStencilStateCreateInfo depthStencilState = vks::initializers::pipelineDepthStencilStateCreateInfo(VK_FALSE, VK_FALSE, VK_COMPARE_OP_ALWAYS);
|
|
VkPipelineViewportStateCreateInfo viewportState = vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
|
|
VkPipelineMultisampleStateCreateInfo multisampleState = vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT, 0);
|
|
std::vector<VkDynamicState> dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
|
|
VkPipelineDynamicStateCreateInfo dynamicState = vks::initializers::pipelineDynamicStateCreateInfo(dynamicStateEnables);
|
|
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
|
|
|
|
// Vertex Input state
|
|
std::vector<VkVertexInputBindingDescription> inputBindings = {
|
|
vks::initializers::vertexInputBindingDescription(0, sizeof(Particle), VK_VERTEX_INPUT_RATE_VERTEX)
|
|
};
|
|
std::vector<VkVertexInputAttributeDescription> inputAttributes = {
|
|
vks::initializers::vertexInputAttributeDescription(0, 0, VK_FORMAT_R32G32B32A32_SFLOAT, offsetof(Particle, pos)),
|
|
vks::initializers::vertexInputAttributeDescription(0, 1, VK_FORMAT_R32G32B32A32_SFLOAT, offsetof(Particle, vel)),
|
|
};
|
|
VkPipelineVertexInputStateCreateInfo vertexInputState = vks::initializers::pipelineVertexInputStateCreateInfo();
|
|
vertexInputState.vertexBindingDescriptionCount = static_cast<uint32_t>(inputBindings.size());
|
|
vertexInputState.pVertexBindingDescriptions = inputBindings.data();
|
|
vertexInputState.vertexAttributeDescriptionCount = static_cast<uint32_t>(inputAttributes.size());
|
|
vertexInputState.pVertexAttributeDescriptions = inputAttributes.data();
|
|
|
|
// Shaders
|
|
shaderStages[0] = loadShader(getShadersPath() + "computenbody/particle.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
|
|
shaderStages[1] = loadShader(getShadersPath() + "computenbody/particle.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
|
|
|
|
VkGraphicsPipelineCreateInfo pipelineCreateInfo = vks::initializers::pipelineCreateInfo(graphics.pipelineLayout, renderPass, 0);
|
|
pipelineCreateInfo.pVertexInputState = &vertexInputState;
|
|
pipelineCreateInfo.pInputAssemblyState = &inputAssemblyState;
|
|
pipelineCreateInfo.pRasterizationState = &rasterizationState;
|
|
pipelineCreateInfo.pColorBlendState = &colorBlendState;
|
|
pipelineCreateInfo.pMultisampleState = &multisampleState;
|
|
pipelineCreateInfo.pViewportState = &viewportState;
|
|
pipelineCreateInfo.pDepthStencilState = &depthStencilState;
|
|
pipelineCreateInfo.pDynamicState = &dynamicState;
|
|
pipelineCreateInfo.stageCount = static_cast<uint32_t>(shaderStages.size());
|
|
pipelineCreateInfo.pStages = shaderStages.data();
|
|
pipelineCreateInfo.renderPass = renderPass;
|
|
|
|
// Additive blending
|
|
blendAttachmentState.colorWriteMask = 0xF;
|
|
blendAttachmentState.blendEnable = VK_TRUE;
|
|
blendAttachmentState.colorBlendOp = VK_BLEND_OP_ADD;
|
|
blendAttachmentState.srcColorBlendFactor = VK_BLEND_FACTOR_ONE;
|
|
blendAttachmentState.dstColorBlendFactor = VK_BLEND_FACTOR_ONE;
|
|
blendAttachmentState.alphaBlendOp = VK_BLEND_OP_ADD;
|
|
blendAttachmentState.srcAlphaBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
|
|
blendAttachmentState.dstAlphaBlendFactor = VK_BLEND_FACTOR_DST_ALPHA;
|
|
|
|
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &graphics.pipeline));
|
|
|
|
buildCommandBuffers();
|
|
}
|
|
|
|
void prepareCompute()
|
|
{
|
|
vkGetDeviceQueue(device, compute.queueFamilyIndex, 0, &compute.queue);
|
|
vulkanDevice->createBuffer(VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, &compute.uniformBuffer, sizeof(Compute::UniformData));
|
|
VK_CHECK_RESULT(compute.uniformBuffer.map());
|
|
std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
|
|
// Binding 0 : Particle position storage buffer
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, VK_SHADER_STAGE_COMPUTE_BIT, 0),
|
|
// Binding 1 : Uniform buffer
|
|
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_COMPUTE_BIT, 1),
|
|
};
|
|
VkDescriptorSetLayoutCreateInfo descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
|
|
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &compute.descriptorSetLayout));
|
|
VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &compute.descriptorSetLayout, 1);
|
|
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &compute.descriptorSet));
|
|
std::vector<VkWriteDescriptorSet> computeWriteDescriptorSets = {
|
|
vks::initializers::writeDescriptorSet(compute.descriptorSet, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 0, &storageBuffer.descriptor),
|
|
vks::initializers::writeDescriptorSet(compute.descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,1,&compute.uniformBuffer.descriptor)
|
|
};
|
|
vkUpdateDescriptorSets(device, static_cast<uint32_t>(computeWriteDescriptorSets.size()), computeWriteDescriptorSets.data(), 0, nullptr);
|
|
VkPipelineLayoutCreateInfo pipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(&compute.descriptorSetLayout, 1);
|
|
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pipelineLayoutCreateInfo, nullptr, &compute.pipelineLayout));
|
|
VkComputePipelineCreateInfo computePipelineCreateInfo = vks::initializers::computePipelineCreateInfo(compute.pipelineLayout, 0);
|
|
computePipelineCreateInfo.stage = loadShader(getShadersPath() + "computenbody/particle_calculate.comp.spv", VK_SHADER_STAGE_COMPUTE_BIT);
|
|
uint32_t sharedDataSize = std::min((uint32_t)1024, (uint32_t)(vulkanDevice->properties.limits.maxComputeSharedMemorySize / sizeof(glm::vec4)));
|
|
VkSpecializationMapEntry specializationMapEntry = vks::initializers::specializationMapEntry(0, 0, sizeof(uint32_t));
|
|
VkSpecializationInfo specializationInfo = vks::initializers::specializationInfo(1, &specializationMapEntry, sizeof(int32_t), &sharedDataSize);
|
|
computePipelineCreateInfo.stage.pSpecializationInfo = &specializationInfo;
|
|
VK_CHECK_RESULT(vkCreateComputePipelines(device, pipelineCache, 1, &computePipelineCreateInfo, nullptr, &compute.pipelineCalculate));
|
|
computePipelineCreateInfo.stage = loadShader(getShadersPath() + "computenbody/particle_integrate.comp.spv", VK_SHADER_STAGE_COMPUTE_BIT);
|
|
VK_CHECK_RESULT(vkCreateComputePipelines(device, pipelineCache, 1, &computePipelineCreateInfo, nullptr, &compute.pipelineIntegrate));
|
|
VkCommandPoolCreateInfo cmdPoolInfo = {};
|
|
cmdPoolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
|
|
cmdPoolInfo.queueFamilyIndex = compute.queueFamilyIndex;
|
|
cmdPoolInfo.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
|
|
VK_CHECK_RESULT(vkCreateCommandPool(device, &cmdPoolInfo, nullptr, &compute.commandPool));
|
|
compute.commandBuffer = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, compute.commandPool);
|
|
buildComputeCommandBuffer();
|
|
}
|
|
|
|
void updateComputeUniformBuffers()
|
|
{
|
|
compute.uniformData.deltaT = paused ? 0.0f : frameTimer * 0.05f;
|
|
memcpy(compute.uniformBuffer.mapped, &compute.uniformData, sizeof(Compute::UniformData));
|
|
}
|
|
|
|
void updateGraphicsUniformBuffers()
|
|
{
|
|
graphics.uniformData.projection = camera.matrices.perspective;
|
|
graphics.uniformData.view = camera.matrices.view;
|
|
graphics.uniformData.screenDim = glm::vec2((float)width, (float)height);
|
|
memcpy(graphics.uniformBuffer.mapped, &graphics.uniformData, sizeof(Graphics::UniformData));
|
|
}
|
|
|
|
void prepare()
|
|
{
|
|
VulkanExampleBase::prepare();
|
|
graphics.queueFamilyIndex = vulkanDevice->queueFamilyIndices.graphics;
|
|
compute.queueFamilyIndex = vulkanDevice->queueFamilyIndices.compute;
|
|
|
|
// Setup the timeline semaphore
|
|
VkSemaphoreCreateInfo semaphoreCI{};
|
|
semaphoreCI.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
|
|
// It's a variation of the core semaphore type, creation is handled via an extension struture
|
|
VkSemaphoreTypeCreateInfoKHR semaphoreTypeCI{};
|
|
semaphoreTypeCI.sType = VK_STRUCTURE_TYPE_SEMAPHORE_TYPE_CREATE_INFO_KHR;
|
|
semaphoreTypeCI.semaphoreType = VK_SEMAPHORE_TYPE_TIMELINE_KHR;
|
|
semaphoreTypeCI.initialValue = timeLineSemaphore.value;
|
|
|
|
semaphoreCI.pNext = &semaphoreTypeCI;
|
|
VK_CHECK_RESULT(vkCreateSemaphore(device, &semaphoreCI, nullptr, &timeLineSemaphore.handle));
|
|
|
|
loadAssets();
|
|
prepareStorageBuffers();
|
|
prepareGraphics();
|
|
prepareCompute();
|
|
prepared = true;
|
|
}
|
|
|
|
void draw()
|
|
{
|
|
// Wait for rendering finished
|
|
VkPipelineStageFlags waitStageMask = VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT;
|
|
|
|
// Submit compute commands
|
|
|
|
// Define incremental timeline sempahore states
|
|
const uint64_t graphics_finished = timeLineSemaphore.value;
|
|
const uint64_t compute_finished = timeLineSemaphore.value + 1;
|
|
const uint64_t all_finished = timeLineSemaphore.value + 2;
|
|
|
|
// With timeline semaphores, we can state on what value we want to wait on / signal on
|
|
VkTimelineSemaphoreSubmitInfoKHR timeLineSubmitInfo{ VK_STRUCTURE_TYPE_TIMELINE_SEMAPHORE_SUBMIT_INFO_KHR };
|
|
timeLineSubmitInfo.waitSemaphoreValueCount = 1;
|
|
timeLineSubmitInfo.pWaitSemaphoreValues = &graphics_finished;
|
|
timeLineSubmitInfo.signalSemaphoreValueCount = 1;
|
|
timeLineSubmitInfo.pSignalSemaphoreValues = &compute_finished;
|
|
|
|
VkSubmitInfo computeSubmitInfo = vks::initializers::submitInfo();
|
|
computeSubmitInfo.commandBufferCount = 1;
|
|
computeSubmitInfo.pCommandBuffers = &compute.commandBuffer;
|
|
computeSubmitInfo.waitSemaphoreCount = 1;
|
|
computeSubmitInfo.pWaitSemaphores = &timeLineSemaphore.handle;
|
|
computeSubmitInfo.pWaitDstStageMask = &waitStageMask;
|
|
computeSubmitInfo.signalSemaphoreCount = 1;
|
|
computeSubmitInfo.pSignalSemaphores = &timeLineSemaphore.handle;
|
|
|
|
computeSubmitInfo.pNext = &timeLineSubmitInfo;
|
|
|
|
VK_CHECK_RESULT(vkQueueSubmit(compute.queue, 1, &computeSubmitInfo, VK_NULL_HANDLE));
|
|
|
|
VulkanExampleBase::prepareFrame();
|
|
|
|
VkPipelineStageFlags graphicsWaitStageMasks[] = { VK_PIPELINE_STAGE_VERTEX_INPUT_BIT, VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT };
|
|
VkSemaphore graphicsWaitSemaphores[] = { timeLineSemaphore.handle, semaphores.presentComplete };
|
|
VkSemaphore graphicsSignalSemaphores[] = { timeLineSemaphore.handle, semaphores.renderComplete };
|
|
|
|
// Submit graphics commands
|
|
submitInfo.commandBufferCount = 1;
|
|
submitInfo.pCommandBuffers = &drawCmdBuffers[currentBuffer];
|
|
submitInfo.waitSemaphoreCount = 2;
|
|
submitInfo.pWaitSemaphores = graphicsWaitSemaphores;
|
|
submitInfo.pWaitDstStageMask = graphicsWaitStageMasks;
|
|
submitInfo.signalSemaphoreCount = 2;
|
|
submitInfo.pSignalSemaphores = graphicsSignalSemaphores;
|
|
|
|
uint64_t wait_values[2] = { compute_finished, compute_finished };
|
|
uint64_t signal_values[2] = { all_finished, all_finished };
|
|
|
|
timeLineSubmitInfo.waitSemaphoreValueCount = 2;
|
|
timeLineSubmitInfo.pWaitSemaphoreValues = &wait_values[0];
|
|
timeLineSubmitInfo.signalSemaphoreValueCount = 2;
|
|
timeLineSubmitInfo.pSignalSemaphoreValues = &signal_values[0];
|
|
|
|
submitInfo.pNext = &timeLineSubmitInfo;
|
|
|
|
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
|
|
|
|
// Increase timeline value base for next frame
|
|
timeLineSemaphore.value = all_finished;
|
|
|
|
VulkanExampleBase::submitFrame();
|
|
}
|
|
|
|
virtual void render()
|
|
{
|
|
if (!prepared)
|
|
return;
|
|
updateComputeUniformBuffers();
|
|
updateGraphicsUniformBuffers();
|
|
draw();
|
|
}
|
|
};
|
|
|
|
VULKAN_EXAMPLE_MAIN()
|