/// <summary>
/// Gets the highest supported hardware feature level of the primary adapter.
/// </summary>
/// <param name="adapter">The <see cref="IDXGIAdapter"/>.</param>
/// <returns>The highest supported hardware feature level.</returns>
public static FeatureLevel GetSupportedFeatureLevel(IDXGIAdapter adapter)
{
var featureLevel = FeatureLevel.Level_9_1;
ID3D11Device device = null;
ID3D11DeviceContext context = null;
try
{
D3D11CreateDevice(
adapter,
DriverType.Unknown,
IntPtr.Zero,
0,
null, 0,
SdkVersion,
out device, out featureLevel, out context);
}
finally
{
context?.Dispose();
device?.Dispose();
}
return(featureLevel);
}
public static Result D3D11CreateDevice(IDXGIAdapter adapter,
DriverType driverType,
DeviceCreationFlags flags,
FeatureLevel[] featureLevels,
out ID3D11Device device)
{
ID3D11DeviceContext context = null;
try
{
return(D3D11CreateDevice(adapter, driverType, flags, featureLevels, out device, out var featureLevel, out context));
}
finally
{
context?.Dispose();
}
}
/// <summary>
/// Check if a feature level is supported by a particular adapter.
/// </summary>
/// <param name="adapter">The adapter.</param>
/// <param name="featureLevel">The feature level.</param>
/// <returns><c>true</c> if the specified adapter is supporting this feature level; otherwise, <c>false</c>.</returns>
public static bool IsSupportedFeatureLevel(IDXGIAdapter adapter, FeatureLevel featureLevel)
{
ID3D11Device device = null;
ID3D11DeviceContext context = null;
try
{
var result = D3D11CreateDevice(
adapter,
DriverType.Unknown,
IntPtr.Zero,
0,
new[] { featureLevel }, 1,
SdkVersion,
out device, out var outputLevel, out context);
return(result.Success && outputLevel == featureLevel);
}
finally
{
context?.Dispose();
device?.Dispose();
}
}
