public static Result D3D11CreateDevice(IDXGIAdapter adapter,
DriverType driverType,
DeviceCreationFlags flags,
FeatureLevel[] featureLevels,
out ID3D11Device device,
out FeatureLevel featureLevel,
out ID3D11DeviceContext immediateContext)
{
var result = D3D11CreateDevice(adapter, driverType, IntPtr.Zero,
(int)flags,
featureLevels,
(featureLevels != null) ? featureLevels.Length : 0,
SdkVersion,
out device,
out featureLevel,
out immediateContext);
if (result.Failure)
{
return(result);
}
if (immediateContext != null)
{
device.AddRef();
device.ImmediateContext__ = immediateContext;
immediateContext.Device__ = device;
}
return(result);
}
public unsafe static Result D3D11On12CreateDevice(
IUnknown d3d12Device,
DeviceCreationFlags flags,
FeatureLevel[] featureLevels,
IUnknown[] commandQueues,
int nodeMask,
out ID3D11Device device,
out ID3D11DeviceContext immediateContext,
out FeatureLevel chosenFeatureLevel)
{
var result = D3D11On12CreateDevice(d3d12Device,
flags,
featureLevels, featureLevels.Length,
commandQueues, commandQueues.Length,
nodeMask,
out device, out immediateContext, out chosenFeatureLevel);
if (result.Failure)
{
return(result);
}
if (immediateContext != null)
{
device.AddRef();
device.ImmediateContext__ = immediateContext;
immediateContext.Device__ = device;
}
return(result);
}
/// <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);
}
private static Result RawD3D11CreateDeviceNoContext(
IntPtr adapterPtr,
DriverType driverType,
DeviceCreationFlags flags,
FeatureLevel[] featureLevels,
out ID3D11Device?device,
out FeatureLevel featureLevel)
{
unsafe
{
device = default;
fixed(void *featureLevelsPtr = &featureLevels[0])
fixed(void *featureLevelPtr = &featureLevel)
{
IntPtr devicePtr = IntPtr.Zero;
Result result = D3D11CreateDevice_(
(void *)adapterPtr,
(int)driverType,
null,
(int)flags,
featureLevels != null && featureLevels.Length > 0 ? featureLevelsPtr : null,
featureLevels?.Length ?? 0,
SdkVersion,
&devicePtr,
featureLevelPtr,
null);
if (result.Success && devicePtr != IntPtr.Zero)
{
device = new ID3D11Device(devicePtr);
}
return(result);
}
}
}
public static Result D3D11CreateDevice(IDXGIAdapter adapter,
DriverType driverType,
DeviceCreationFlags flags,
FeatureLevel[] featureLevels,
out ID3D11Device device)
{
return(D3D11CreateDevice(adapter, driverType, flags, featureLevels, out device, out var featureLevel, out var immediateContext));
}
public static Result D3D11CreateDevice(IntPtr adapterPtr, DriverType driverType, DeviceCreationFlags flags, FeatureLevel[] featureLevels,
out ID3D11Device device)
{
return(RawD3D11CreateDeviceNoContext(
adapterPtr,
driverType,
flags,
featureLevels,
out device,
out _));
}
public static Result D3D11CreateDevice(IDXGIAdapter adapter, DriverType driverType, DeviceCreationFlags flags, FeatureLevel[] featureLevels,
out ID3D11Device device)
{
return(RawD3D11CreateDeviceNoContext(
adapter != null ? adapter.NativePointer : IntPtr.Zero,
driverType,
flags,
featureLevels,
out device,
out _));
}
private void ReleaseDevice()
{
if (Device__ != null)
{
// Only call Dispose() when it is created by accessing ID3D11DeviceChild.Device.
if (!shouldNotDisposeDevice)
{
Device__.Dispose();
Device__ = null;
}
}
}
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();
}
}
private static Result RawD3D11CreateDeviceNoContext(
IDXGIAdapter adapter,
DriverType driverType,
DeviceCreationFlags flags,
FeatureLevel[] featureLevels,
out ID3D11Device device,
out FeatureLevel featureLevel)
{
unsafe
{
device = default;
var adapterPtr = CppObject.ToCallbackPtr <IDXGIAdapter>(adapter);
fixed(void *featureLevelsPtr = &featureLevels[0])
fixed(void *featureLevelPtr = &featureLevel)
{
var devicePtr = IntPtr.Zero;
Result result = D3D11CreateDevice_(
(void *)adapterPtr,
(int)driverType,
null,
(int)flags,
featureLevels != null && featureLevels.Length > 0 ? featureLevelsPtr : null,
featureLevels?.Length ?? 0,
SdkVersion,
&devicePtr,
featureLevelPtr,
null);
if (result.Success && devicePtr != IntPtr.Zero)
{
device = new ID3D11Device(devicePtr);
}
GC.KeepAlive(adapter);
return(result);
}
}
}
/// <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();
}
}
public static Result D3D11CreateDevice(IntPtr adapterPtr, DriverType driverType, DeviceCreationFlags flags, FeatureLevel[] featureLevels,
out ID3D11Device device, out ID3D11DeviceContext immediateContext)
{
return(D3D11CreateDevice(adapterPtr, driverType, flags, featureLevels, out device, out _, out immediateContext));
}
