209 lines
6.7 KiB
C++
209 lines
6.7 KiB
C++
#include "first_app.hpp"
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// std
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#include <stdexcept>
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#include <array>
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namespace hk
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{
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FirstApp::FirstApp()
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{
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loadModels();
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createPipelineLayout();
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recreateSwapChain();
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createCommandBuffers();
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}
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FirstApp::~FirstApp()
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{
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vkDestroyPipelineLayout(device.device(), pipelineLayout, nullptr);
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}
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void FirstApp::run()
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{
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while (!window.shouldClose())
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{
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glfwPollEvents();
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drawFrame();
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}
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vkDeviceWaitIdle(device.device());
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}
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void FirstApp::loadModels()
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{
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std::vector<Model::Vertex> vertices{
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{{0.0f, -0.5f}, {1.0f, 0.0f, 0.0f}},
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{{0.5f, 0.5f}, {0.0f, 1.0f, 0.0f}},
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{{-0.5f, 0.5f}, {0.0f, 0.0f, 1.0f}}
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};
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model = std::make_unique<Model>(device, vertices);
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}
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void FirstApp::createPipelineLayout()
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{
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VkPipelineLayoutCreateInfo pipelineLayoutInfo{};
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pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
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pipelineLayoutInfo.setLayoutCount = 0;
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pipelineLayoutInfo.pSetLayouts = nullptr;
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pipelineLayoutInfo.pushConstantRangeCount = 0;
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pipelineLayoutInfo.pPushConstantRanges = nullptr;
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if (vkCreatePipelineLayout(device.device(), &pipelineLayoutInfo, nullptr, &pipelineLayout) !=
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VK_SUCCESS)
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{
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throw std::runtime_error("failed to create pipeline layout!");
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}
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}
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void FirstApp::createPipeline()
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{
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assert(swapChain != nullptr && "Cannot create pipeline before swap chain");
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assert(pipelineLayout != nullptr && "Cannot create pipeline before pipeline layout");
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PipelineConfigInfo pipelineConfig{};
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Pipeline::defaultPipelineConfigInfo(pipelineConfig);
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pipelineConfig.renderPass = swapChain->getRenderPass();
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pipelineConfig.pipelineLayout = pipelineLayout;
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pipeline = std::make_unique<Pipeline>(
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device,
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"shaders/simple_shader.vert.spv",
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"shaders/simple_shader.frag.spv",
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pipelineConfig);
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}
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void FirstApp::recreateSwapChain()
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{
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auto extent = window.getExtend();
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while (extent.width == 0 || extent.height == 0)
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{
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extent = window.getExtend();
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glfwWaitEvents();
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}
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vkDeviceWaitIdle(device.device());
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if (swapChain == nullptr)
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{
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swapChain = std::make_unique<SwapChain>(device, extent);
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}
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else
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{
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swapChain = std::make_unique<SwapChain>(device, extent, std::move(swapChain));
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if (swapChain->imageCount() != commandBuffers.size())
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{
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freeCommandBuffers();
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createCommandBuffers();
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}
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}
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// if render pass compatible do nothing else
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createPipeline();
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}
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void FirstApp::createCommandBuffers()
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{
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commandBuffers.resize(swapChain->imageCount());
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VkCommandBufferAllocateInfo allocInfo{};
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allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
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allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
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allocInfo.commandPool = device.getCommandPool();
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allocInfo.commandBufferCount = static_cast<uint32_t>(commandBuffers.size());
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if (vkAllocateCommandBuffers(device.device(), &allocInfo, commandBuffers.data()) !=
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VK_SUCCESS)
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{
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throw std::runtime_error("failed to allocate command buffers!");
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}
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}
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void FirstApp::freeCommandBuffers()
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{
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vkFreeCommandBuffers(
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device.device(),
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device.getCommandPool(),
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static_cast<float>(commandBuffers.size()),
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commandBuffers.data());
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commandBuffers.clear();
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}
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void FirstApp::recordCommandBuffer(int imageIndex)
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{
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VkCommandBufferBeginInfo beginInfo{};
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beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
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if (vkBeginCommandBuffer(commandBuffers[imageIndex], &beginInfo) != VK_SUCCESS)
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{
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throw std::runtime_error("failed to begin recording command buffer!");
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}
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VkRenderPassBeginInfo renderPassInfo{};
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renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
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renderPassInfo.renderPass = swapChain->getRenderPass();
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renderPassInfo.framebuffer = swapChain->getFrameBuffer(imageIndex);
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renderPassInfo.renderArea.offset = {0, 0};
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renderPassInfo.renderArea.extent = swapChain->getSwapChainExtent();
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std::array<VkClearValue, 2> clearValues{};
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clearValues[0].color = {0.1f, 0.1f, 0.1f, 1.0f};
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clearValues[1].depthStencil = {1.0f, 0};
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renderPassInfo.clearValueCount = static_cast<uint32_t>(clearValues.size());
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renderPassInfo.pClearValues = clearValues.data();
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vkCmdBeginRenderPass(commandBuffers[imageIndex], &renderPassInfo, VK_SUBPASS_CONTENTS_INLINE);
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VkViewport viewport{};
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viewport.x = 0.0f;
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viewport.y = 0.0f;
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viewport.width = static_cast<float>(swapChain->getSwapChainExtent().width);
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viewport.height = static_cast<float>(swapChain->getSwapChainExtent().height);
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viewport.minDepth = 0.0f;
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viewport.maxDepth = 1.0f;
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VkRect2D scissor{{0, 0}, swapChain->getSwapChainExtent()};
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vkCmdSetViewport(commandBuffers[imageIndex], 0, 1, &viewport);
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vkCmdSetScissor(commandBuffers[imageIndex], 0, 1, &scissor);
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pipeline->bind(commandBuffers[imageIndex]);
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model->bind(commandBuffers[imageIndex]);
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model->draw(commandBuffers[imageIndex]);
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vkCmdEndRenderPass(commandBuffers[imageIndex]);
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if (vkEndCommandBuffer(commandBuffers[imageIndex]) != VK_SUCCESS)
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{
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throw std::runtime_error("failed to record command buffer!");
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}
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}
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void FirstApp::drawFrame()
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{
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uint32_t imageIndex;
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auto result = swapChain->acquireNextImage(&imageIndex);
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if (result == VK_ERROR_OUT_OF_DATE_KHR)
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{
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recreateSwapChain();
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return;
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}
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if (result != VK_SUCCESS && result != VK_SUBOPTIMAL_KHR)
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{
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throw std::runtime_error("failed to acquire swap chain image!");
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}
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recordCommandBuffer(imageIndex);
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result = swapChain->submitCommandBuffers(&commandBuffers[imageIndex], &imageIndex);
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if (result == VK_ERROR_OUT_OF_DATE_KHR || result == VK_SUBOPTIMAL_KHR || window.wasWindowResized())
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{
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window.resetWindowResizedFlag();
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recreateSwapChain();
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return;
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}
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if (result != VK_SUCCESS)
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{
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throw std::runtime_error("failed to present swap chain image!");
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}
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}
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} |