/// <summary>
/// Initializes a new instance of the <see cref="DescriptorHeapDescription"/> struct.
/// </summary>
/// <param name="type">The heap type.</param>
/// <param name="descriptorCount">The descriptor count.</param>
/// <param name="flags">The optional heap flags.</param>
/// <param name="nodeMask">Multi GPU node mask.</param>
public DescriptorHeapDescription(DescriptorHeapType type, int descriptorCount, DescriptorHeapFlags flags = DescriptorHeapFlags.None, int nodeMask = 0)
{
Type = type;
DescriptorCount = descriptorCount;
Flags = flags;
NodeMask = nodeMask;
}
public DescriptorAllocator(GraphicsDevice device, DescriptorHeapType descriptorHeapType, int descriptorCount = DescriptorsPerHeap, DescriptorHeapFlags descriptorHeapFlags = DescriptorHeapFlags.None)
{
if (descriptorCount < 1 || descriptorCount > DescriptorsPerHeap)
{
throw new ArgumentOutOfRangeException(nameof(descriptorCount), $"Descriptor count must be between 1 and {DescriptorsPerHeap}.");
}
Type = descriptorHeapType;
Flags = descriptorHeapFlags;
DescriptorHandleIncrementSize = device.NativeDevice.GetDescriptorHandleIncrementSize((Vortice.Direct3D12.DescriptorHeapType)descriptorHeapType);
DescriptorHeapDescription descriptorHeapDescription = new DescriptorHeapDescription((Vortice.Direct3D12.DescriptorHeapType)descriptorHeapType, descriptorCount, (Vortice.Direct3D12.DescriptorHeapFlags)descriptorHeapFlags);
DescriptorHeap = device.NativeDevice.CreateDescriptorHeap(descriptorHeapDescription);
DescriptorCapacity = descriptorCount;
}
public D3D12TextureView(DX12GraphicsDevice graphicsDevice,
int descriptorCount,
DescriptorHeapFlags descriptorHeapFlags,
DescriptorHeapType descriptorHeapType)
{
var descriptorHeapDescription = new DescriptorHeapDescription
{
DescriptorCount = descriptorCount,
Flags = descriptorHeapFlags,
Type = descriptorHeapType
};
if (descriptorHeapType == DescriptorHeapType.RenderTargetView)
{
_rtvDescriptorHeap = graphicsDevice.CreateDescriptorHeap(descriptorHeapDescription);
}
else if (descriptorHeapType == DescriptorHeapType.ConstantBufferViewShaderResourceViewUnorderedAccessView)
{
_dsvDescriptorHeap = graphicsDevice.CreateDescriptorHeap(descriptorHeapDescription);
}
}
