first release
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openVulkanoCpp/Vulkan/Renderer.hpp
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220
openVulkanoCpp/Vulkan/Renderer.hpp
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#pragma once
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#include <stdexcept>
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#include <iostream>
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#include <fstream>
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#include "../Base/Render/IRenderer.hpp"
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#include "../Base/UI/IWindow.hpp"
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#include "../Base/Logger.hpp"
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#include "Context.hpp"
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#include "Resources/ResourceManager.hpp"
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#include "../Data/ReadOnlyAtomicArrayQueue.hpp"
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#include "CommandHelper.hpp"
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#include "../Base/EngineConfiguration.hpp"
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namespace openVulkanoCpp
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{
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namespace Vulkan
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{
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struct WaitSemaphores
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{
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std::vector<vk::Semaphore> renderReady, renderComplete;
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};
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class Renderer : public IRenderer
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{
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Context context;
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std::shared_ptr<spdlog::logger> logger;
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std::vector<WaitSemaphores> waitSemaphores;
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Scene::Scene* scene = nullptr;
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std::ofstream perfFile;
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ResourceManager resourceManager;
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uint32_t currentImageId = -1;
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std::vector<std::thread> threadPool;
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std::vector<std::vector<CommandHelper>> commands;
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std::vector<std::vector<vk::CommandBuffer>> submitBuffers;
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VulkanShader* shader;
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public:
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Renderer() = default;
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virtual ~Renderer() = default;
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void Init(IGraphicsAppManager* graphicsAppManager, IWindow* window) override
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{
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logger = Logger::RENDER;
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logger->info("Initializing Vulkan renderer ...");
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IVulkanWindow* vulkanWindow = window->GetVulkanWindow();
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if (!vulkanWindow)
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{
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logger->error("The provided window is not compatible with Vulkan.");
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throw std::runtime_error("The provided window is not compatible with Vulkan.");
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}
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context.Init(graphicsAppManager, vulkanWindow);
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for (int i = 0; i < context.swapChain.GetImageCount(); i++)
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{
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waitSemaphores.emplace_back();
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waitSemaphores[i].renderComplete.push_back(context.device->device.createSemaphore({}));
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waitSemaphores[i].renderReady.resize(2);
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}
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resourceManager.Init(&context, context.swapChain.GetImageCount());
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threadPool.resize(EngineConfiguration::GetEngineConfiguration()->GetNumThreads() - 1);
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//Setup cmd pools and buffers
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commands.resize(threadPool.size() + 2); // One extra cmd object for the primary buffer and one for the main thread
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for(uint32_t i = 0; i < commands.size(); i++)
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{
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commands[i] = std::vector<CommandHelper>(context.swapChain.GetImageCount());
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for(size_t j = 0; j < commands[i].size(); j++)
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{
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commands[i][j].Init(context.device->device, context.device->queueIndices.GetGraphics(),
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(i == commands.size() - 1) ? vk::CommandBufferLevel::ePrimary : vk::CommandBufferLevel::eSecondary);
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}
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}
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submitBuffers.resize(context.swapChain.GetImageCount());
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for(uint32_t i = 0; i < submitBuffers.size(); i++)
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{
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submitBuffers[i].resize(commands.size() - 1);
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for (size_t j = 0; j < submitBuffers[i].size(); j++)
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{
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submitBuffers[i][j] = commands[j][i].cmdBuffer;
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}
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}
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shader = resourceManager.CreateShader(scene->shader);
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perfFile.open("perf.csv");
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perfFile << "sep=,\ntotal,fps\n";
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logger->info("Vulkan renderer initialized");
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}
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void Tick() override
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{
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currentImageId = context.swapChain.AcquireNextImage();
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auto tickStart= std::chrono::high_resolution_clock::now();
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Render();
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// Perf logging
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auto tickDone = std::chrono::high_resolution_clock::now();
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auto time = std::chrono::duration_cast<std::chrono::microseconds>(tickDone - tickStart).count();
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perfFile << time << ',' << 1000000000.0 / time << '\n';
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}
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void Close() override
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{
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perfFile.close();
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//context.Close();
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}
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std::string GetMainRenderDeviceName() override
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{
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return (context.device) ? context.device->GetDeviceName() : "Unknown";
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}
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void Resize(const uint32_t newWidth, const uint32_t newHeight) override
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{
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context.Resize(newWidth, newHeight);
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resourceManager.Resize();
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}
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void SetScene(Scene::Scene* scene) override
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{
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this->scene = scene;
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}
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Scene::Scene* GetScene() override
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{
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return scene;
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}
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CommandHelper* GetCommandData(uint32_t poolId)
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{
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return &commands[poolId][currentImageId];
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}
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static void RunThread(Renderer* renderer, Data::ReadOnlyAtomicArrayQueue<Scene::Drawable*>* jobQueue, uint32_t id)
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{
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renderer->RecordSecondaryBuffer(jobQueue, id);
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}
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void StartThreads(Data::ReadOnlyAtomicArrayQueue<Scene::Drawable*>* jobQueue)
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{
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for(uint32_t i = 0; i < threadPool.size(); i++)
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{
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threadPool[i] = std::thread(RunThread, this, jobQueue, i);
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}
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}
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void RecordPrimaryBuffer()
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{
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CommandHelper* cmdHelper = GetCommandData(commands.size() - 1);
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cmdHelper->Reset();
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cmdHelper->cmdBuffer.begin(vk::CommandBufferBeginInfo(vk::CommandBufferUsageFlagBits::eOneTimeSubmit));
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context.swapChainRenderPass.Begin(cmdHelper->cmdBuffer);
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}
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void Submit()
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{
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for (auto& thread : threadPool) { thread.join(); } // Wait till everything is recorded
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CommandHelper* cmdHelper = GetCommandData(commands.size() - 1);
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cmdHelper->cmdBuffer.executeCommands(submitBuffers[currentImageId].size(), submitBuffers[currentImageId].data());
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context.swapChainRenderPass.End(cmdHelper->cmdBuffer);
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cmdHelper->cmdBuffer.end();
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std::array<vk::PipelineStageFlags, 2> stateFlags = { vk::PipelineStageFlags(vk::PipelineStageFlagBits::eColorAttachmentOutput), vk::PipelineStageFlags(vk::PipelineStageFlagBits::eColorAttachmentOutput) };
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waitSemaphores[currentImageId].renderReady[0] = resourceManager.EndFrame();
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waitSemaphores[currentImageId].renderReady[1] = context.swapChain.imageAvailableSemaphore;
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vk::SubmitInfo si = vk::SubmitInfo(
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waitSemaphores[currentImageId].renderReady.size(), waitSemaphores[currentImageId].renderReady.data(), stateFlags.data(),
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1, &cmdHelper->cmdBuffer,
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waitSemaphores[currentImageId].renderComplete.size(), waitSemaphores[currentImageId].renderComplete.data());
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context.device->graphicsQueue.submit(1, &si, context.swapChain.GetCurrentSubmitFence());
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context.swapChain.Present(context.device->graphicsQueue, waitSemaphores[currentImageId].renderComplete);
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}
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void Render()
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{
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resourceManager.StartFrame(currentImageId);
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Data::ReadOnlyAtomicArrayQueue<Scene::Drawable*> jobQueue(scene->shapeList);
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StartThreads(&jobQueue);
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RecordPrimaryBuffer();
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RecordSecondaryBuffer(&jobQueue, threadPool.size());
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Submit();
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}
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void RecordSecondaryBuffer(Data::ReadOnlyAtomicArrayQueue<Scene::Drawable*>* jobQueue, uint32_t poolId)
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{
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Scene::Geometry* lastGeo = nullptr;
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Scene::Node* lastNode = nullptr;
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CommandHelper* cmdHelper = GetCommandData(poolId);
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cmdHelper->Reset();
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vk::CommandBufferInheritanceInfo inheritance = { context.swapChainRenderPass.renderPass, 0, context.swapChainRenderPass.GetFrameBuffer()->GetCurrentFrameBuffer() };
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cmdHelper->cmdBuffer.begin(vk::CommandBufferBeginInfo{ vk::CommandBufferUsageFlagBits::eOneTimeSubmit | vk::CommandBufferUsageFlagBits::eRenderPassContinue, &inheritance });
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shader->Record(cmdHelper->cmdBuffer, currentImageId);
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cmdHelper->cmdBuffer.pushConstants(context.pipeline.pipelineLayout, vk::ShaderStageFlagBits::eVertex, 0, 64, scene->GetCamera()->GetViewProjectionMatrixPointer());
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Scene::Drawable** drawablePointer;
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while((drawablePointer = jobQueue->Pop()) != nullptr)
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{
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Scene::Drawable* drawable = *drawablePointer;
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Scene::Geometry* mesh = drawable->mesh;
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if (mesh != lastGeo)
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{
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if (!mesh->renderGeo) resourceManager.PrepareGeometry(mesh);
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dynamic_cast<VulkanGeometry*>(mesh->renderGeo)->Record(cmdHelper->cmdBuffer, currentImageId);
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lastGeo = mesh;
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}
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for(Scene::Node* node : drawable->nodes)
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{
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if (node != lastNode)
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{
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if (!node->renderNode) resourceManager.PrepareNode(node);
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dynamic_cast<VulkanNode*>(node->renderNode)->Record(cmdHelper->cmdBuffer, currentImageId);
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lastNode = node;
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}
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cmdHelper->cmdBuffer.drawIndexed(mesh->GetIndexCount(), 1, 0, 0, 0);
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}
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}
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cmdHelper->cmdBuffer.end();
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}
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};
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}
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}
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