/// <summary>
/// Called when RenderLoop wants to present its results.
/// </summary>
void IRenderLoopHost.OnRenderLoop_Present(EngineDevice engineDevice)
{
if (m_d3dImageSource == null)
{
return;
}
if (!this.IsLoaded)
{
return;
}
bool isLocked = false;
GraphicsCore.Current.PerformanceCalculator.ExecuteAndMeasureActivityDuration(
"Render.Lock",
() => isLocked = m_d3dImageSource.TryLock(MAX_IMAGE_LOCK_DURATION));
if (!isLocked)
{
return;
}
try
{
// Draw current 3d scene to wpf
D3D11.DeviceContext deviceContext = engineDevice.DeviceImmediateContextD3D11;
deviceContext.ResolveSubresource(m_backBufferD3D11, 0, m_backBufferForWpf, 0, DXGI.Format.B8G8R8A8_UNorm);
deviceContext.Flush();
deviceContext.ClearState();
// Apply true background texture if a cached bitmap was applied before
if (this.Source != m_d3dImageSource)
{
this.Source = m_d3dImageSource;
}
// Invalidate the D3D image
m_d3dImageSource.InvalidateD3DImage();
}
finally
{
m_d3dImageSource.Unlock();
}
}
