public static Vk.ImageView CreateImageView(VkContext state, Vk.Image image, Vk.Format format,
Vk.ImageAspectFlags aspectFlags)
{
var subresourceRange = new Vk.ImageSubresourceRange();
subresourceRange.AspectMask = aspectFlags;
subresourceRange.BaseMipLevel = 0;
subresourceRange.LevelCount = 1;
subresourceRange.BaseArrayLayer = 0;
subresourceRange.LayerCount = 1;
var viewInfo = new Vk.ImageViewCreateInfo();
viewInfo.Image = image;
viewInfo.ViewType = Vk.ImageViewType.View2D;
viewInfo.Format = format;
viewInfo.SubresourceRange = subresourceRange;
return(state.Device.CreateImageView(viewInfo));
}
private void createImageViews(VkContext context)
{
var imageViews = new Vk.ImageView[this.wrapper.ImageCapacity];
for (int i = 0; i < this.wrapper.ImageCapacity; i++)
{
Vk.ImageViewCreateInfo createInfo = new Vk.ImageViewCreateInfo();
createInfo.Image = this.wrapper.Images[i];
createInfo.ViewType = Vk.ImageViewType.View2D;
createInfo.Format = this.wrapper.Format;
Vk.ComponentMapping componentMapping = new Vk.ComponentMapping();
componentMapping.R = Vk.ComponentSwizzle.Identity;
componentMapping.G = Vk.ComponentSwizzle.Identity;
componentMapping.B = Vk.ComponentSwizzle.Identity;
componentMapping.A = Vk.ComponentSwizzle.Identity;
createInfo.Components = componentMapping;
Vk.ImageSubresourceRange subresourceRange = new Vk.ImageSubresourceRange();
subresourceRange.AspectMask = Vk.ImageAspectFlags.Color;
subresourceRange.BaseMipLevel = 0;
subresourceRange.LevelCount = 1;
subresourceRange.BaseArrayLayer = 0;
subresourceRange.LayerCount = 1;
createInfo.SubresourceRange = subresourceRange;
try {
imageViews[i] = context.Device.CreateImageView(createInfo);
} catch (Vk.ResultException result) {
throw new VkException($"An error occurred while creating image view {i}.", result);
}
}
this.wrapper.ImageViews = imageViews;
}
public void TransitionImageLayout(Vk.Image image, Vk.Format format,
Vk.ImageLayout oldLayout, Vk.ImageLayout newLayout)
{
var buffer = this.BeginSingleTimeCommands(this.GraphicsCommandPool);
var subresourceRange = new Vk.ImageSubresourceRange();
if (newLayout == Vk.ImageLayout.DepthStencilAttachmentOptimal)
{
subresourceRange.AspectMask = Vk.ImageAspectFlags.Depth;
if (VkHelper.HasStencilComponent(format))
{
subresourceRange.AspectMask |= Vk.ImageAspectFlags.Stencil;
}
}
else
{
subresourceRange.AspectMask = Vk.ImageAspectFlags.Color;
}
subresourceRange.BaseMipLevel = 0;
subresourceRange.LevelCount = 1;
subresourceRange.BaseArrayLayer = 0;
subresourceRange.LayerCount = 1;
Vk.PipelineStageFlags srcStage;
Vk.PipelineStageFlags dstStage;
var barrier = new Vk.ImageMemoryBarrier();
barrier.OldLayout = oldLayout;
barrier.NewLayout = newLayout;
barrier.SrcQueueFamilyIndex = VkConstants.VK_QUEUE_FAMILY_IGNORED;
barrier.DstQueueFamilyIndex = VkConstants.VK_QUEUE_FAMILY_IGNORED;
if (oldLayout == Vk.ImageLayout.Undefined && newLayout == Vk.ImageLayout.TransferDstOptimal)
{
barrier.SrcAccessMask = 0;
barrier.DstAccessMask = Vk.AccessFlags.TransferWrite;
srcStage = Vk.PipelineStageFlags.TopOfPipe;
dstStage = Vk.PipelineStageFlags.Transfer;
}
else if (oldLayout == Vk.ImageLayout.TransferDstOptimal && newLayout == Vk.ImageLayout.ShaderReadOnlyOptimal)
{
barrier.SrcAccessMask = Vk.AccessFlags.TransferWrite;
barrier.DstAccessMask = Vk.AccessFlags.ShaderRead;
srcStage = Vk.PipelineStageFlags.Transfer;
dstStage = Vk.PipelineStageFlags.FragmentShader;
}
else if (oldLayout == Vk.ImageLayout.Undefined && newLayout == Vk.ImageLayout.DepthStencilAttachmentOptimal)
{
barrier.SrcAccessMask = 0;
barrier.DstAccessMask = Vk.AccessFlags.DepthStencilAttachmentRead
| Vk.AccessFlags.DepthStencilAttachmentWrite;
srcStage = Vk.PipelineStageFlags.TopOfPipe;
dstStage = Vk.PipelineStageFlags.EarlyFragmentTests;
}
else
{
throw new Exception("Unsupported layout transition.");
}
barrier.Image = image;
barrier.SubresourceRange = subresourceRange;
buffer.CmdPipelineBarrier(srcStage, dstStage, 0, null, null,
new Vk.ImageMemoryBarrier[] { barrier });
this.EndSingleTimeCommands(this.GraphicsQueue, this.GraphicsCommandPool, buffer);
}
