EffectBeginUpdate Method

BeginUpdate method is called for each registered effect before the SceneNodes and their materials are updated. It can be used to read some data from the RenderingContext (for example CurrentSwapChainImageIndex). It is used with the EndUpdate method to prepare all the data for the next rendered frame. BeginUpdate method internally calls OnBeginUpdate(RenderingContext) method that needs to be implemented by the derived effect.

public void BeginUpdate(
	RenderingContext renderingContext
)