private void createDepthResources(VkContext context)
{
var depthFormat = VkHelper.FindDepthFormat(context);
var depthImage = VkHelper.CreateImage(context,
this.wrapper.Extent.Width, this.wrapper.Extent.Height,
depthFormat, Vk.ImageTiling.Optimal, Vk.ImageUsageFlags.DepthStencilAttachment,
Vk.MemoryPropertyFlags.DeviceLocal);
var depthImageView = VkHelper.CreateImageView(context, depthImage.Image, depthFormat,
Vk.ImageAspectFlags.Depth);
context.TransitionImageLayout(depthImage.Image, depthFormat, Vk.ImageLayout.Undefined,
Vk.ImageLayout.DepthStencilAttachmentOptimal);
this.wrapper.DepthImage = depthImage.Image;
this.wrapper.DepthImageMemory = depthImage.Memory;
this.wrapper.DepthImageView = depthImageView;
}
private void createRenderPass(VkContext context)
{
var colourAttachment = new Vk.AttachmentDescription();
colourAttachment.Format = this.wrapper.Format;
colourAttachment.Samples = Vk.SampleCountFlags.Count1;
colourAttachment.LoadOp = Vk.AttachmentLoadOp.Clear;
colourAttachment.StoreOp = Vk.AttachmentStoreOp.Store;
colourAttachment.StencilLoadOp = Vk.AttachmentLoadOp.DontCare;
colourAttachment.StencilStoreOp = Vk.AttachmentStoreOp.DontCare;
colourAttachment.InitialLayout = Vk.ImageLayout.Undefined;
colourAttachment.FinalLayout = Vk.ImageLayout.PresentSrcKhr;
var colourAttachmentRef = new Vk.AttachmentReference();
colourAttachmentRef.Attachment = 0;
colourAttachmentRef.Layout = Vk.ImageLayout.ColorAttachmentOptimal;
var depthAttachment = new Vk.AttachmentDescription();
depthAttachment.Format = VkHelper.FindDepthFormat(context);
depthAttachment.Samples = Vk.SampleCountFlags.Count1;
depthAttachment.LoadOp = Vk.AttachmentLoadOp.Clear;
depthAttachment.StoreOp = Vk.AttachmentStoreOp.DontCare;
depthAttachment.StencilLoadOp = Vk.AttachmentLoadOp.DontCare;
depthAttachment.StencilStoreOp = Vk.AttachmentStoreOp.DontCare;
depthAttachment.InitialLayout = Vk.ImageLayout.Undefined;
depthAttachment.FinalLayout = Vk.ImageLayout.DepthStencilAttachmentOptimal;
var depthAttachmentRef = new Vk.AttachmentReference();
depthAttachmentRef.Attachment = 1;
depthAttachmentRef.Layout = Vk.ImageLayout.DepthStencilAttachmentOptimal;
var subpass = new Vk.SubpassDescription();
subpass.PipelineBindPoint = Vk.PipelineBindPoint.Graphics;
subpass.ColorAttachmentCount = 1;
subpass.ColorAttachments = new Vk.AttachmentReference[] {
colourAttachmentRef
};
subpass.DepthStencilAttachment = depthAttachmentRef;
var subpassDep = new Vk.SubpassDependency();
subpassDep.SrcSubpass = VkConstants.VK_SUBPASS_EXTERNAL;
subpassDep.DstSubpass = 0;
subpassDep.SrcStageMask = Vk.PipelineStageFlags.ColorAttachmentOutput;
subpassDep.DstStageMask = Vk.PipelineStageFlags.ColorAttachmentOutput;
subpassDep.SrcAccessMask = 0;
subpassDep.DstAccessMask = Vk.AccessFlags.ColorAttachmentRead | Vk.AccessFlags.ColorAttachmentWrite;
var renderPassInfo = new Vk.RenderPassCreateInfo();
renderPassInfo.AttachmentCount = 2;
renderPassInfo.Attachments = new Vk.AttachmentDescription[] {
colourAttachment,
depthAttachment
};
renderPassInfo.SubpassCount = 1;
renderPassInfo.Subpasses = new Vk.SubpassDescription[] {
subpass
};
renderPassInfo.DependencyCount = 1;
renderPassInfo.Dependencies = new Vk.SubpassDependency[] {
subpassDep
};
try {
this.wrapper.RenderPass = context.Device.CreateRenderPass(renderPassInfo);
} catch (Vk.ResultException result) {
throw new VkException("An error occurred while creating a render pass.", result);
}
}
