private void GetImageMemoryRequirements(
SharpVulkan.Image image,
out SharpVulkan.MemoryRequirements requirements,
out bool prefersDedicatedAllocation,
out bool requiresDedicatedAllocation)
{
if (Context.SupportsDedicatedAllocation)
{
var requirementsInfo = new SharpVulkan.Ext.ImageMemoryRequirementsInfo2 {
StructureType = SharpVulkan.Ext.StructureType.ImageMemoryRequirementsInfo2,
Image = image
};
var dedicatedRequirements = new SharpVulkan.Ext.MemoryDedicatedRequirements {
StructureType = SharpVulkan.Ext.StructureType.MemoryDedicatedRequirements
};
var requirements2 = new SharpVulkan.Ext.MemoryRequirements2 {
StructureType = SharpVulkan.Ext.StructureType.MemoryRequirements2,
Next = new IntPtr(&dedicatedRequirements)
};
Context.VKExt.GetImageMemoryRequirements2(Context.Device, ref requirementsInfo, ref requirements2);
requirements = requirements2.MemoryRequirements;
prefersDedicatedAllocation = dedicatedRequirements.PrefersDedicatedAllocation;
requiresDedicatedAllocation = dedicatedRequirements.RequiresDedicatedAllocation;
}
else
{
Context.Device.GetImageMemoryRequirements(image, out requirements);
prefersDedicatedAllocation = false;
requiresDedicatedAllocation = false;
}
}
private void CreateDepthStencilBuffer()
{
var formats = new[] {
SharpVulkan.Format.D32SFloatS8UInt,
SharpVulkan.Format.D24UNormS8UInt,
SharpVulkan.Format.D16UNormS8UInt
};
depthStencilFormat = formats.First(format => {
context.PhysicalDevice.GetFormatProperties(format, out var formatProperties);
return((formatProperties.OptimalTilingFeatures & SharpVulkan.FormatFeatureFlags.DepthStencilAttachment) != 0);
});
var tiling = SharpVulkan.ImageTiling.Optimal;
var createInfo = new SharpVulkan.ImageCreateInfo {
StructureType = SharpVulkan.StructureType.ImageCreateInfo,
ImageType = SharpVulkan.ImageType.Image2D,
Usage = SharpVulkan.ImageUsageFlags.DepthStencilAttachment,
Format = depthStencilFormat,
Extent = new SharpVulkan.Extent3D((uint)width, (uint)height, 1),
MipLevels = 1,
ArrayLayers = 1,
Samples = SharpVulkan.SampleCountFlags.Sample1,
SharingMode = SharpVulkan.SharingMode.Exclusive,
Tiling = tiling,
InitialLayout = SharpVulkan.ImageLayout.Undefined
};
depthStencilBuffer = context.Device.CreateImage(ref createInfo);
depthStencilMemory = context.MemoryAllocator.Allocate(depthStencilBuffer, SharpVulkan.MemoryPropertyFlags.DeviceLocal, tiling);
var viewCreateInfo = new SharpVulkan.ImageViewCreateInfo {
StructureType = SharpVulkan.StructureType.ImageViewCreateInfo,
ViewType = SharpVulkan.ImageViewType.Image2D,
Image = depthStencilBuffer,
Format = depthStencilFormat,
Components = SharpVulkan.ComponentMapping.Identity,
SubresourceRange = new SharpVulkan.ImageSubresourceRange(
SharpVulkan.ImageAspectFlags.Depth |
SharpVulkan.ImageAspectFlags.Stencil)
};
depthStencilView = context.Device.CreateImageView(ref viewCreateInfo);
var memoryBarrier = new SharpVulkan.ImageMemoryBarrier {
StructureType = SharpVulkan.StructureType.ImageMemoryBarrier,
Image = depthStencilBuffer,
OldLayout = SharpVulkan.ImageLayout.Undefined,
NewLayout = SharpVulkan.ImageLayout.DepthStencilAttachmentOptimal,
SourceAccessMask = SharpVulkan.AccessFlags.None,
DestinationAccessMask = SharpVulkan.AccessFlags.DepthStencilAttachmentRead | SharpVulkan.AccessFlags.DepthStencilAttachmentWrite,
SubresourceRange = new SharpVulkan.ImageSubresourceRange(
SharpVulkan.ImageAspectFlags.Depth |
SharpVulkan.ImageAspectFlags.Stencil)
};
context.EndRenderPass();
context.EnsureCommandBuffer();
context.CommandBuffer.PipelineBarrier(SharpVulkan.PipelineStageFlags.TopOfPipe,
SharpVulkan.PipelineStageFlags.EarlyFragmentTests | SharpVulkan.PipelineStageFlags.LateFragmentTests,
SharpVulkan.DependencyFlags.None, 0, null, 0, null, 1, &memoryBarrier);
}
public virtual void Dispose()
{
if (image != SharpVulkan.Image.Null)
{
context.Release(imageView);
context.Release(image);
context.Release(memory);
image = SharpVulkan.Image.Null;
}
Disposed = true;
}
public MemoryAlloc Allocate(SharpVulkan.Image image, SharpVulkan.MemoryPropertyFlags propertyFlags, SharpVulkan.ImageTiling tiling)
{
GetImageMemoryRequirements(image,
out var requirements,
out var prefersDedicated,
out bool requiresDedicated);
var dedicatedAllocateInfo = new SharpVulkan.Ext.MemoryDedicatedAllocateInfo {
StructureType = SharpVulkan.Ext.StructureType.MemoryDedicatedAllocateInfo,
Image = image
};
var alloc = Allocate(
requirements, &dedicatedAllocateInfo, prefersDedicated, requiresDedicated,
propertyFlags, tiling == SharpVulkan.ImageTiling.Linear);
Context.Device.BindImageMemory(image, alloc.Memory.Memory, alloc.Offset);
return(alloc);
}
private void Create(bool renderTarget)
{
var vkFormat = VulkanHelper.GetVKFormat(format);
var usage =
SharpVulkan.ImageUsageFlags.TransferSource |
SharpVulkan.ImageUsageFlags.TransferDestination |
SharpVulkan.ImageUsageFlags.Sampled;
if (renderTarget)
{
usage |= SharpVulkan.ImageUsageFlags.ColorAttachment;
}
var tiling = SharpVulkan.ImageTiling.Optimal;
var imageCreateInfo = new SharpVulkan.ImageCreateInfo {
StructureType = SharpVulkan.StructureType.ImageCreateInfo,
ImageType = SharpVulkan.ImageType.Image2D,
Usage = usage,
Format = vkFormat,
Extent = new SharpVulkan.Extent3D((uint)width, (uint)height, 1),
MipLevels = (uint)levelCount,
ArrayLayers = 1,
Samples = SharpVulkan.SampleCountFlags.Sample1,
SharingMode = SharpVulkan.SharingMode.Exclusive,
InitialLayout = SharpVulkan.ImageLayout.Undefined,
Tiling = tiling
};
image = context.Device.CreateImage(ref imageCreateInfo);
var memoryPropertyFlags = SharpVulkan.MemoryPropertyFlags.DeviceLocal;
if (IsPvrtc1Format(Format))
{
memoryPropertyFlags |= SharpVulkan.MemoryPropertyFlags.HostVisible | SharpVulkan.MemoryPropertyFlags.HostCoherent;
}
memory = context.MemoryAllocator.Allocate(image, memoryPropertyFlags, tiling);
var viewCreateInfo = new SharpVulkan.ImageViewCreateInfo {
StructureType = SharpVulkan.StructureType.ImageViewCreateInfo,
ViewType = SharpVulkan.ImageViewType.Image2D,
Image = image,
Format = vkFormat,
Components = SharpVulkan.ComponentMapping.Identity,
SubresourceRange = new SharpVulkan.ImageSubresourceRange(SharpVulkan.ImageAspectFlags.Color)
};
imageView = context.Device.CreateImageView(ref viewCreateInfo);
var memoryBarrier = new SharpVulkan.ImageMemoryBarrier {
StructureType = SharpVulkan.StructureType.ImageMemoryBarrier,
Image = image,
OldLayout = SharpVulkan.ImageLayout.Undefined,
NewLayout = SharpVulkan.ImageLayout.ShaderReadOnlyOptimal,
SourceAccessMask = SharpVulkan.AccessFlags.None,
DestinationAccessMask = SharpVulkan.AccessFlags.ShaderRead,
SubresourceRange = new SharpVulkan.ImageSubresourceRange(SharpVulkan.ImageAspectFlags.Color)
};
context.EndRenderPass();
context.EnsureCommandBuffer();
context.CommandBuffer.PipelineBarrier(
SharpVulkan.PipelineStageFlags.TopOfPipe, SharpVulkan.PipelineStageFlags.VertexShader | SharpVulkan.PipelineStageFlags.FragmentShader,
SharpVulkan.DependencyFlags.None, 0, null, 0, null, 1, &memoryBarrier);
}
