Performs offscreen rendering.
To perform offscreen rendering, the following steps are necessary:
Create a component that performs rendering, for example a ISceneView.
Create a render target handle, which defines the properties of the render target that will be used for offscreen rendering. If offscreen rendering is supposed to produce transparent pixels, a render target format with an alpha channel is required (for example RenderTargetFormat.RGBA_8) and the default clear color should be transparent (see RenderTargetHandle.Color).
Create an OffscreenView, passing the render component and render target handle, and add it to a scene view.
Creates a new instance of OffscreenView.
The following callbacks will be performed on component in, if it implements the respective interface: