private unsafe void CreateRenderPass(PipelineStateDescription pipelineStateDescription) { bool hasDepthStencilAttachment = pipelineStateDescription.Output.DepthStencilFormat != PixelFormat.None; var renderTargetCount = pipelineStateDescription.Output.RenderTargetCount; var attachmentCount = renderTargetCount; if (hasDepthStencilAttachment) { attachmentCount++; } var attachments = new AttachmentDescription[attachmentCount]; var colorAttachmentReferences = new AttachmentReference[renderTargetCount]; fixed(PixelFormat *renderTargetFormat = &pipelineStateDescription.Output.RenderTargetFormat0) fixed(BlendStateRenderTargetDescription * blendDescription = &pipelineStateDescription.BlendState.RenderTarget0) { for (int i = 0; i < renderTargetCount; i++) { var currentBlendDesc = pipelineStateDescription.BlendState.IndependentBlendEnable ? (blendDescription + i) : blendDescription; attachments[i] = new AttachmentDescription { Format = VulkanConvertExtensions.ConvertPixelFormat(*(renderTargetFormat + i)), Samples = SampleCountFlags.Sample1, LoadOperation = currentBlendDesc->BlendEnable ? AttachmentLoadOperation.Load : AttachmentLoadOperation.DontCare, // TODO VULKAN: Only if any destination blend? StoreOperation = AttachmentStoreOperation.Store, StencilLoadOperation = AttachmentLoadOperation.DontCare, StencilStoreOperation = AttachmentStoreOperation.DontCare, InitialLayout = ImageLayout.ColorAttachmentOptimal, FinalLayout = ImageLayout.ColorAttachmentOptimal, }; colorAttachmentReferences[i] = new AttachmentReference { Attachment = (uint)i, Layout = ImageLayout.ColorAttachmentOptimal, }; } } if (hasDepthStencilAttachment) { attachments[attachmentCount - 1] = new AttachmentDescription { Format = Texture.GetFallbackDepthStencilFormat(GraphicsDevice, VulkanConvertExtensions.ConvertPixelFormat(pipelineStateDescription.Output.DepthStencilFormat)), Samples = SampleCountFlags.Sample1, LoadOperation = AttachmentLoadOperation.Load, // TODO VULKAN: Only if depth read enabled? StoreOperation = AttachmentStoreOperation.Store, // TODO VULKAN: Only if depth write enabled? StencilLoadOperation = AttachmentLoadOperation.DontCare, // TODO VULKAN: Handle stencil StencilStoreOperation = AttachmentStoreOperation.DontCare, InitialLayout = ImageLayout.DepthStencilAttachmentOptimal, FinalLayout = ImageLayout.DepthStencilAttachmentOptimal, }; } var depthAttachmentReference = new AttachmentReference { Attachment = (uint)attachments.Length - 1, Layout = ImageLayout.DepthStencilAttachmentOptimal, }; var subpass = new SubpassDescription { PipelineBindPoint = PipelineBindPoint.Graphics, ColorAttachmentCount = (uint)renderTargetCount, ColorAttachments = colorAttachmentReferences.Length > 0 ? new IntPtr(Interop.Fixed(colorAttachmentReferences)) : IntPtr.Zero, DepthStencilAttachment = hasDepthStencilAttachment ? new IntPtr(&depthAttachmentReference) : IntPtr.Zero, }; var renderPassCreateInfo = new RenderPassCreateInfo { StructureType = StructureType.RenderPassCreateInfo, AttachmentCount = (uint)attachmentCount, Attachments = attachments.Length > 0 ? new IntPtr(Interop.Fixed(attachments)) : IntPtr.Zero, SubpassCount = 1, Subpasses = new IntPtr(&subpass) }; NativeRenderPass = GraphicsDevice.NativeDevice.CreateRenderPass(ref renderPassCreateInfo); }