public ulong GetRequiredIntermediateSize(int firstSubresource, int numSubresources)
{
ResourceDescription desc = GetDescription();
using (ID3D12Device device = GetDevice <ID3D12Device>())
{
device.GetCopyableFootprints(desc, firstSubresource, numSubresources, 0, null, null, null, out ulong requiredSize);
return(requiredSize);
}
}
public static Result D3D12CreateDevice(IUnknown adapter, FeatureLevel minFeatureLevel, out ID3D12Device device)
{
var result = D3D12CreateDevice(adapter, minFeatureLevel, typeof(ID3D12Device).GUID, out var nativePtr);
if (result.Failure)
{
device = null;
return(result);
}
device = new ID3D12Device(nativePtr);
return(result);
}
/// <summary>
/// Gets the highest supported hardware feature level of the primary adapter.
/// </summary>
/// <param name="adapter">The <see cref="IDXGIAdapter"/>.</param>
/// <param name="minFeatureLevel">Thje</param>
/// <returns>The highest supported hardware feature level.</returns>
public static FeatureLevel GetMaxSupportedFeatureLevel(IDXGIAdapter adapter, FeatureLevel minFeatureLevel = FeatureLevel.Level_11_0)
{
ID3D12Device device = null;
try
{
D3D12CreateDevice(adapter, minFeatureLevel, out device);
return(device.CheckMaxSupportedFeatureLevel(FeatureLevels));
}
catch
{
return(FeatureLevel.Level_9_1);
}
finally
{
device?.Dispose();
}
}
public int Subresources(ID3D12Device pDevice)
{
return(MipLevels * ArraySize * GetPlaneCount(pDevice));
}
public byte GetPlaneCount(ID3D12Device device)
{
return(device.GetFormatPlaneCount(Format));
}
public static Result D3D12CreateDevice(IDXGIAdapter adapter, out ID3D12Device device)
{
return(D3D12CreateDevice(adapter, FeatureLevel.Level_11_0, out device));
}