internal FactoryHandlerDXGI(GraphicsCoreConfiguration coreConfiguration)
{
_dxgiFactory = SeeingSharpUtil.TryExecute(() => CreateDXGIFactory2 <IDXGIFactory4>(coreConfiguration.DebugEnabled));
if (_dxgiFactory == null)
{
_dxgiFactory = SeeingSharpUtil.TryExecute(() => CreateDXGIFactory2 <IDXGIFactory2>(coreConfiguration.DebugEnabled));
}
if (_dxgiFactory == null)
{
_dxgiFactory = SeeingSharpUtil.TryExecute(() => CreateDXGIFactory1 <IDXGIFactory1>());
}
if (_dxgiFactory == null)
{
throw new SeeingSharpGraphicsException("Unable to create the DXGI Factory object!");
}
}
/// <summary>
/// Initializes a new instance of the <see cref="DeviceHandlerD3D11"/> class.
/// </summary>
internal DeviceHandlerD3D11(GraphicsDeviceConfiguration deviceConfig, IDXGIAdapter1 dxgiAdapter)
{
_dxgiAdapter = dxgiAdapter;
// Define possible create flags
var createFlags = D3D11.DeviceCreationFlags.BgraSupport;
if (deviceConfig.CoreConfiguration.DebugEnabled)
{
createFlags |= D3D11.DeviceCreationFlags.Debug;
}
// Define all steps on which we try to initialize Direct3D
var initParameterQueue =
new List <Tuple <D3D.FeatureLevel, D3D11.DeviceCreationFlags, HardwareDriverLevel> >();
// Define all tries for hardware initialization
initParameterQueue.Add(Tuple.Create(
D3D.FeatureLevel.Level_11_1, createFlags, HardwareDriverLevel.Direct3D11));
initParameterQueue.Add(Tuple.Create(
D3D.FeatureLevel.Level_11_0, createFlags, HardwareDriverLevel.Direct3D11));
initParameterQueue.Add(Tuple.Create(
D3D.FeatureLevel.Level_10_0, createFlags, HardwareDriverLevel.Direct3D10));
// Try to create the device, each defined configuration step by step
foreach (var(actFeatureLevel, actCreateFlags, actDriverLevel) in initParameterQueue)
{
try
{
// Try to create the device using current parameters
var result = D3D11CreateDevice(
dxgiAdapter, D3D.DriverType.Unknown, createFlags,
new D3D.FeatureLevel[] { actFeatureLevel }, out var device);
if (!result.Success)
{
continue;
}
if (device == null)
{
continue;
}
try
{
_device1 = device.QueryInterface <D3D11.ID3D11Device1>();
_device3 = SeeingSharpUtil.TryExecute(() => _device1.QueryInterface <D3D11.ID3D11Device3>());
if (_device3 != null)
{
_immediateContext3 = _device3.ImmediateContext3;
}
}
finally
{
SeeingSharpUtil.SafeDispose(ref device);
}
// Device successfully created, save all parameters and break this loop
_featureLevel = actFeatureLevel;
_creationFlags = actCreateFlags;
this.DriverLevel = actDriverLevel;
break;
}
catch (Exception)
{
// ignored
}
}
// Throw exception on failure
if (_device1 == null)
{
throw new SeeingSharpGraphicsException("Unable to initialize d3d11 device!");
}
// Get immediate context from the device
_immediateContext = _device1.ImmediateContext;
}