/// <summary> Initializes Direct3D-OCCT rendering. </summary>
public void StopRenderingScene()
{
// This method is called when WPF loses its Direct3D device,
// so we should just release our custom Direct3D scene
CompositionTarget.Rendering -= OnRendering;
if (myD3DRender != IntPtr.Zero)
{
Direct3DProxy.ReleaseRender(ref myD3DRender);
}
myColorSurf = IntPtr.Zero;
}
/// <summary> Resizes Direct3D surfaces and OpenGL FBO. </summary>
public void Resize(int theSizeX, int theSizeY)
{
mySize = new WndSize(theSizeX, theSizeY);
if (!myIsFailed && myD3DImage.IsFrontBufferAvailable)
{
IntPtr aColorSurfShare;
// Initialize Direct3D device and render target
Direct3DProxy.ResizeWindow(ref myD3DRender, ref mySize, out myColorSurf, out aColorSurfShare);
// Set the back buffer for Direct3D WPF image
myD3DImage.Lock();
{
myD3DImage.SetBackBuffer(D3DResourceType.IDirect3DSurface9, myColorSurf);
}
myD3DImage.Unlock();
Viewer.View.ResizeBridgeFBO(mySize.cx, mySize.cy, myColorSurf, aColorSurfShare);
}
}
/// <summary> Initializes Direct3D-OCCT rendering. </summary>
private void BeginRenderingScene()
{
if (myIsFailed)
{
return;
}
if (myD3DImage.IsFrontBufferAvailable)
{
IntPtr aWinHandle;
IntPtr aD3DDevice;
// Initialize Direct3D device and render target
myD3DRender = Direct3DProxy.InitRender(out aWinHandle, out aD3DDevice);
Viewer = new OCCViewer();
if (!Viewer.InitInterop(aWinHandle, aD3DDevice))
{
MessageBox.Show("Failed to initialize OpenGL-Direct3D interoperability!",
"Error", MessageBoxButton.OK, MessageBoxImage.Error);
myIsFailed = true;
if (myD3DRender != IntPtr.Zero)
{
Direct3DProxy.ReleaseRender(ref myD3DRender);
}
return;
}
// Leverage the Rendering event of WPF composition
// target to update the our custom Direct3D scene
CompositionTarget.Rendering += OnRendering;
}
}
