/// <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(Adapter adapter, FeatureLevel featureLevel)
{
var device = new Device(IntPtr.Zero);
DeviceContext context = null;
try
{
FeatureLevel outputLevel;
var result = D3D11.CreateDevice(adapter, DriverType.Unknown, IntPtr.Zero, DeviceCreationFlags.None,
new[] { featureLevel }, 1, D3D11.SdkVersion, device, out outputLevel,
out context);
return(result.Success && outputLevel == featureLevel);
}
finally
{
if (context != null)
{
context.Dispose();
}
if (device.NativePointer != IntPtr.Zero)
{
device.Dispose();
}
}
}
/// <summary>
/// Gets the highest supported hardware feature level of the primary adapter.
/// </summary>
/// <param name="adapter">The adapter.</param>
/// <returns>
/// The highest supported hardware feature level.
/// </returns>
public static FeatureLevel GetSupportedFeatureLevel(Adapter adapter)
{
FeatureLevel outputLevel;
var device = new Device(IntPtr.Zero);
DeviceContext context;
D3D11.CreateDevice(adapter, DriverType.Unknown, IntPtr.Zero, DeviceCreationFlags.None, null, 0, D3D11.SdkVersion, device, out outputLevel,
out context).CheckError();
context.Dispose();
device.Dispose();
return(outputLevel);
}
/// <summary>
/// Internal CreateDevice
/// </summary>
/// <param name = "adapter"></param>
/// <param name = "driverType"></param>
/// <param name = "flags"></param>
/// <param name = "featureLevels"></param>
private void CreateDevice(Adapter adapter, DriverType driverType, DeviceCreationFlags flags,
FeatureLevel[] featureLevels)
{
FeatureLevel selectedLevel;
D3D11.CreateDevice(adapter, driverType, IntPtr.Zero, flags, featureLevels,
featureLevels == null ? 0 : featureLevels.Length, D3D11.SdkVersion, this,
out selectedLevel, out ImmediateContext__).CheckError();
if (ImmediateContext__ != null)
{
// Add a reference when setting the device on the context
((IUnknown)this).AddReference();
ImmediateContext__.Device__ = this;
}
}