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//
// FrameBuffer.cs
//
// Author:
// Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
//
// Copyright (c) 2019 jp
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Collections.Generic;
using System.Linq;
using Vulkan;
using static Vulkan.VulkanNative;
namespace VKE {
public class Framebuffer : Activable {
internal VkFramebuffer handle;
RenderPass renderPass;
public List<Image> attachments = new List<Image> ();
VkFramebufferCreateInfo createInfo = VkFramebufferCreateInfo.New ();
public uint Width => createInfo.width;
public uint Height => createInfo.height;
public uint Layers => createInfo.layers;
public Framebuffer (RenderPass _renderPass, uint _width, uint _height, uint _layers = 1) : base(_renderPass.dev) {
renderPass = _renderPass;
createInfo.width = _width;
createInfo.height = _height;
createInfo.layers = _layers;
createInfo.renderPass = renderPass.handle;
}
public Framebuffer (RenderPass _renderPass, uint _width, uint _height, params Image[] views)
: this (_renderPass, _width, _height) {
for (int i = 0; i < views.Length; i++) {
Image v = views[i];
if (v == null) {
//automatically create attachment if not in unused state in the renderpass
VkAttachmentDescription ad = renderPass.attachments[i];
VkImageUsageFlags usage = VkImageUsageFlags.None;
VkImageAspectFlags aspectFlags = VkImageAspectFlags.None;
checkLayoutRequirements (ad.initialLayout, ref usage, ref aspectFlags);
checkLayoutRequirements (ad.finalLayout, ref usage, ref aspectFlags);
foreach (SubPass sp in renderPass.subpasses) {
//TODO:check subpass usage
}
v = new Image (renderPass.dev, ad.format, usage, VkMemoryPropertyFlags.DeviceLocal,
_width, _height, VkImageType.Image2D, ad.samples, VkImageTiling.Optimal, 1, createInfo.layers);
v.CreateView (VkImageViewType.Image2D, aspectFlags);
} else
v.Activate ();//increase ref and create handle if not already activated
attachments.Add (v);
}
Activate ();
}
public override void Activate () {
if (state != ActivableState.Activated) {
VkImageView[] views = attachments.Select (a => a.Descriptor.imageView).ToArray ();
createInfo.attachmentCount = (uint)views.Length;
createInfo.pAttachments = views.Pin ();
Utils.CheckResult (vkCreateFramebuffer (renderPass.dev.VkDev, ref createInfo, IntPtr.Zero, out handle));
views.Unpin ();
}
base.Activate ();
}
void checkLayoutRequirements (VkImageLayout layout, ref VkImageUsageFlags usage, ref VkImageAspectFlags aspectFlags) {
switch (layout) {
case VkImageLayout.ColorAttachmentOptimal:
case VkImageLayout.PresentSrcKHR:
case VkImageLayout.SharedPresentKHR:
aspectFlags |= VkImageAspectFlags.Color;
usage |= VkImageUsageFlags.ColorAttachment;
break;
case VkImageLayout.DepthStencilAttachmentOptimal:
aspectFlags |= VkImageAspectFlags.Depth | VkImageAspectFlags.Stencil;
usage |= VkImageUsageFlags.DepthStencilAttachment;
break;
case VkImageLayout.DepthStencilReadOnlyOptimal:
aspectFlags |= VkImageAspectFlags.Depth | VkImageAspectFlags.Stencil;
usage |= VkImageUsageFlags.Sampled;
break;
case VkImageLayout.ShaderReadOnlyOptimal:
aspectFlags |= VkImageAspectFlags.Color;
usage |= VkImageUsageFlags.Sampled;
break;
case VkImageLayout.TransferSrcOptimal:
usage |= VkImageUsageFlags.TransferSrc;
break;
case VkImageLayout.TransferDstOptimal:
usage |= VkImageUsageFlags.TransferDst;
break;
case VkImageLayout.DepthReadOnlyStencilAttachmentOptimalKHR:
case VkImageLayout.DepthAttachmentStencilReadOnlyOptimalKHR:
aspectFlags |= VkImageAspectFlags.Depth | VkImageAspectFlags.Stencil;
usage |= VkImageUsageFlags.Sampled | VkImageUsageFlags.DepthStencilAttachment;
break;
}
}
#region IDisposable Support
protected override void Dispose (bool disposing) {
if (state == ActivableState.Activated)
dev.DestroyFramebuffer (handle);
if (disposing) {
foreach (Image img in attachments)
img.Dispose();
}else
System.Diagnostics.Debug.WriteLine ("VKE Activable object disposed by finalizer");
base.Dispose (disposing);
}
#endregion
}
}
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