private string HandleDeviceReset()
{
bool needsReset = false;
switch (GraphicsDevice.GraphicsDeviceStatus)
{
case GraphicsDeviceStatus.Lost:
return("Graphics device lost");
case GraphicsDeviceStatus.NotReset:
needsReset = true;
break;
default:
PresentationParameters pp = GraphicsDevice.PresentationParameters;
needsReset = (ClientSize.Width > pp.BackBufferWidth) || (ClientSize.Height > pp.BackBufferHeight);
break;
}
if (needsReset)
{
try {
_deviceService.ResetDevice(ClientSize.Width, ClientSize.Height);
}
catch (Exception e) {
return("Graphics device reset failed\n\n" + e);
}
}
return(null);
}
private bool HandleDeviceReset()
{
bool deviceNeedsReset = false;
switch (_graphicsDeviceService.GraphicsDevice.GraphicsDeviceStatus)
{
case GraphicsDeviceStatus.Lost:
// If the graphics device is lost, we cannot use it at all.
return(false);
case GraphicsDeviceStatus.NotReset:
// If device is in the not-reset state, we should try to reset it.
deviceNeedsReset = true;
break;
}
if (deviceNeedsReset)
{
Debug.WriteLine("Resetting Device");
_graphicsDeviceService.ResetDevice((int)ActualWidth, (int)ActualHeight);
return(false);
}
return(true);
}
bool HandleDeviceReset()
{
bool deviceNeedsReset = false;
switch (GraphicsDeviceService.GraphicsDevice.GraphicsDeviceStatus)
{
case GraphicsDeviceStatus.Lost:
// If the graphics device is lost, we cannot use it at all.
return(false);
case GraphicsDeviceStatus.NotReset:
// If device is in the not-reset state, we should try to reset it.
deviceNeedsReset = true;
break;
default:
// If the device state is ok, check whether it is big enough.
PresentationParameters pp = GraphicsDeviceService.GraphicsDevice.PresentationParameters;
deviceNeedsReset = ((int)ActualWidth > pp.BackBufferWidth) || ((int)ActualHeight > pp.BackBufferHeight);
break;
}
if (deviceNeedsReset)
{
Debug.WriteLine("Resetting Device");
GraphicsDeviceService.ResetDevice((int)ActualWidth, (int)ActualHeight);
deviceNeedsReset = false;
return(false);
}
return(true);
}
private void XnaWindowHost_SizeChanged(object sender, SizeChangedEventArgs e)
{
// If we have a reference to the GraphicsDeviceService, we must reset it based on our updated size
if (graphicsService != null)
{
graphicsService.ResetDevice((int)ActualWidth, (int)ActualHeight);
}
}
/// <summary>
/// Helper used by <see cref="OnCompositionTargetRendering"/>.
/// This checks the graphics device status,
/// making sure it is big enough for drawing the current control, and
/// that the device is not lost. Returns an error string if the device
/// could not be reset.
/// </summary>
private GraphicsDeviceResetStatus HandleDeviceReset(int width, int height)
{
bool deviceNeedsReset;
switch (_graphicsService.GraphicsDevice.GraphicsDeviceStatus)
{
case GraphicsDeviceStatus.Lost:
// If the graphics device is lost, we cannot use it at all.
return(GraphicsDeviceResetStatus.Lost);
case GraphicsDeviceStatus.NotReset:
// If device is in the not-reset state, we should try to reset it.
deviceNeedsReset = true;
break;
default:
// If the device state is ok, check whether it is big enough.
PresentationParameters pp = _graphicsService.GraphicsDevice.PresentationParameters;
deviceNeedsReset = (width > pp.BackBufferWidth) ||
(height > pp.BackBufferHeight);
break;
}
// Do we need to reset the device?
if (deviceNeedsReset)
{
try
{
_graphicsService.ResetDevice(width, height);
}
catch
{
return(GraphicsDeviceResetStatus.ResetFailed);
}
}
return(GraphicsDeviceResetStatus.Normal);
}
/// <summary>
/// Helper used by BeginDraw. This checks the graphics device status,
/// making sure it is big enough for drawing the current control, and
/// that the device is not lost. Returns an error string if the device
/// could not be reset.
/// </summary>
string HandleDeviceReset()
{
bool deviceNeedsReset = false;
switch (GraphicsDevice.GraphicsDeviceStatus)
{
case GraphicsDeviceStatus.Lost:
// If the graphics device is lost, we cannot use it at all.
return("Graphics device lost");
case GraphicsDeviceStatus.NotReset:
// If device is in the not-reset state, we should try to reset it.
deviceNeedsReset = true;
break;
default:
// If the device state is ok, check whether it is big enough.
PresentationParameters pp = GraphicsDevice.PresentationParameters;
deviceNeedsReset = (ClientSize.Width > pp.BackBufferWidth) ||
(ClientSize.Height > pp.BackBufferHeight);
break;
}
// Do we need to reset the device?
if (deviceNeedsReset)
{
try
{
graphicsDeviceService.ResetDevice(ClientSize.Width,
ClientSize.Height);
}
catch (Exception e)
{
return("Graphics device reset failed\n\n" + e);
}
}
return(null);
}