protected virtual void SetupRenderPass()
{
using (NativeList <VkAttachmentDescription> attachments = new NativeList <VkAttachmentDescription>())
{
attachments.Count = 2;
// Color attachment
attachments[0] = new VkAttachmentDescription();
attachments[0].format = Swapchain.ColorFormat;
attachments[0].samples = VkSampleCountFlags._1;
attachments[0].loadOp = VkAttachmentLoadOp.Clear;
attachments[0].storeOp = VkAttachmentStoreOp.Store;
attachments[0].stencilLoadOp = VkAttachmentLoadOp.DontCare;
attachments[0].stencilStoreOp = VkAttachmentStoreOp.DontCare;
attachments[0].initialLayout = VkImageLayout.Undefined;
attachments[0].finalLayout = VkImageLayout.PresentSrc;
// Depth attachment
attachments[1] = new VkAttachmentDescription();
attachments[1].format = DepthFormat;
attachments[1].samples = VkSampleCountFlags._1;
attachments[1].loadOp = VkAttachmentLoadOp.Clear;
attachments[1].storeOp = VkAttachmentStoreOp.Store;
attachments[1].stencilLoadOp = VkAttachmentLoadOp.DontCare;
attachments[1].stencilStoreOp = VkAttachmentStoreOp.DontCare;
attachments[1].initialLayout = VkImageLayout.Undefined;
attachments[1].finalLayout = VkImageLayout.DepthStencilAttachmentOptimal;
VkAttachmentReference colorReference = new VkAttachmentReference();
colorReference.attachment = 0;
colorReference.layout = VkImageLayout.ColorAttachmentOptimal;
VkAttachmentReference depthReference = new VkAttachmentReference();
depthReference.attachment = 1;
depthReference.layout = VkImageLayout.DepthStencilAttachmentOptimal;
VkSubpassDescription subpassDescription = new VkSubpassDescription();
subpassDescription.pipelineBindPoint = VkPipelineBindPoint.Graphics;
subpassDescription.colorAttachmentCount = 1;
subpassDescription.pColorAttachments = &colorReference;
subpassDescription.pDepthStencilAttachment = &depthReference;
subpassDescription.inputAttachmentCount = 0;
subpassDescription.pInputAttachments = null;
subpassDescription.preserveAttachmentCount = 0;
subpassDescription.pPreserveAttachments = null;
subpassDescription.pResolveAttachments = null;
// Subpass dependencies for layout transitions
using (NativeList <VkSubpassDependency> dependencies = new NativeList <VkSubpassDependency>(2))
{
dependencies.Count = 2;
dependencies[0].srcSubpass = SubpassExternal;
dependencies[0].dstSubpass = 0;
dependencies[0].srcStageMask = VkPipelineStageFlags.BottomOfPipe;
dependencies[0].dstStageMask = VkPipelineStageFlags.ColorAttachmentOutput;
dependencies[0].srcAccessMask = VkAccessFlags.MemoryRead;
dependencies[0].dstAccessMask = (VkAccessFlags.ColorAttachmentRead | VkAccessFlags.ColorAttachmentWrite);
dependencies[0].dependencyFlags = VkDependencyFlags.ByRegion;
dependencies[1].srcSubpass = 0;
dependencies[1].dstSubpass = SubpassExternal;
dependencies[1].srcStageMask = VkPipelineStageFlags.ColorAttachmentOutput;
dependencies[1].dstStageMask = VkPipelineStageFlags.BottomOfPipe;
dependencies[1].srcAccessMask = (VkAccessFlags.ColorAttachmentRead | VkAccessFlags.ColorAttachmentWrite);
dependencies[1].dstAccessMask = VkAccessFlags.MemoryRead;
dependencies[1].dependencyFlags = VkDependencyFlags.ByRegion;
VkRenderPassCreateInfo renderPassInfo = new VkRenderPassCreateInfo();
renderPassInfo.sType = VkStructureType.RenderPassCreateInfo;
renderPassInfo.attachmentCount = attachments.Count;
renderPassInfo.pAttachments = (VkAttachmentDescription *)attachments.Data.ToPointer();
renderPassInfo.subpassCount = 1;
renderPassInfo.pSubpasses = &subpassDescription;
renderPassInfo.dependencyCount = dependencies.Count;
renderPassInfo.pDependencies = (VkSubpassDependency *)dependencies.Data;
Util.CheckResult(vkCreateRenderPass(Device, &renderPassInfo, null, out _renderPass));
}
}
}