public D3D11Texture(Texture2D existingTexture, TextureType type, PixelFormat format)
{
_device = existingTexture.Device;
DeviceTexture = existingTexture;
Width = (uint)existingTexture.Description.Width;
Height = (uint)existingTexture.Description.Height;
Depth = 1;
MipLevels = (uint)existingTexture.Description.MipLevels;
ArrayLayers = (uint)existingTexture.Description.ArraySize;
Format = format;
SampleCount = FormatHelpers.GetSampleCount((uint)existingTexture.Description.SampleDescription.Count);
Type = type;
Usage = D3D11Formats.GetVdUsage(
existingTexture.Description.BindFlags,
existingTexture.Description.CpuAccessFlags,
existingTexture.Description.OptionFlags);
DxgiFormat = D3D11Formats.ToDxgiFormat(
format,
(Usage & TextureUsage.DepthStencil) == TextureUsage.DepthStencil);
}