.. _program_listing_file_PrismEngine_src_renderPass.cpp:

Program Listing for File renderPass.cpp
=======================================

|exhale_lsh| :ref:`Return to documentation for file <file_PrismEngine_src_renderPass.cpp>` (``PrismEngine/src/renderPass.cpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #include "renderPass.h"
   #include "deviceWrapper.h"
   
   void prism::PGC::L1::RenderPass::createImpl()
   {
       VkAttachmentDescription depthAttachment{};
       depthAttachment.format = L3::DeviceWrapper::findDepthFormat(context->physicalDevice);
       depthAttachment.samples = context->msaaSamples;
       depthAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
       depthAttachment.storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
       depthAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
       depthAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
       depthAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
       depthAttachment.finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
   
       VkAttachmentDescription colorAttachmentResolve{};
       colorAttachmentResolve.format = context->swapChainImageFormat;
       colorAttachmentResolve.samples = VK_SAMPLE_COUNT_1_BIT;
       colorAttachmentResolve.loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
       colorAttachmentResolve.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
       colorAttachmentResolve.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
       colorAttachmentResolve.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
       colorAttachmentResolve.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
       colorAttachmentResolve.finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
   
       VkAttachmentReference colorAttachmentResolveRef{};
       colorAttachmentResolveRef.attachment = 2;
       colorAttachmentResolveRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
   
       VkAttachmentReference depthAttachmentRef{};
       depthAttachmentRef.attachment = 1;
       depthAttachmentRef.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
   
       VkAttachmentDescription colorAttachment{};
       colorAttachment.format = context->swapChainImageFormat;
       colorAttachment.samples = context->msaaSamples;
       colorAttachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
       colorAttachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
       colorAttachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
       colorAttachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
       colorAttachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
       colorAttachment.finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
   
       VkAttachmentReference colorAttachmentRef{};
       colorAttachmentRef.attachment = 0;
       colorAttachmentRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
   
       VkSubpassDescription subpass{};
       subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
       subpass.colorAttachmentCount = 1;
       subpass.pColorAttachments = &colorAttachmentRef;
       subpass.pDepthStencilAttachment = &depthAttachmentRef;
       subpass.pResolveAttachments = &colorAttachmentResolveRef;
   
       VkSubpassDependency dependency{};
       dependency.srcSubpass = VK_SUBPASS_EXTERNAL;
       dependency.dstSubpass = 0;
       dependency.srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT | VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT;
       dependency.srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
       dependency.dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT | VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
       dependency.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
   
       std::array<VkAttachmentDescription, 3> attachments = { colorAttachment, depthAttachment, colorAttachmentResolve };
       VkRenderPassCreateInfo renderPassInfo{};
       renderPassInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
       renderPassInfo.attachmentCount = static_cast<uint32_t>(attachments.size());
       renderPassInfo.pAttachments = attachments.data();
       renderPassInfo.subpassCount = 1;
       renderPassInfo.pSubpasses = &subpass;
       renderPassInfo.dependencyCount = 1;
       renderPassInfo.pDependencies = &dependency;
   
       if (vkCreateRenderPass(context->device, &renderPassInfo, nullptr, &context->renderPass) != VK_SUCCESS) {
           throw std::runtime_error("failed to create render pass!");
       }
   }
   
   void prism::PGC::L1::RenderPass::cleanupImpl()
   {
       vkDestroyRenderPass(context->device, context->renderPass, nullptr);
   }