Draw calls

thanks to BDC_Patrick

Each container has different draw call count

• A VerticalBox or SizeBox or such do have 1 Draw call.
• An Overlay uses 2, cause of z Sorting
• A Canvas uses 3 up to 5 depending on Anchoring, pivot and z sorting

If you nest two Vertical Boxes: you get 2 Draw calls Nest two Overlays: you get 4 Draw calls Nest two Canvases: you get 9-15 Draw Calls.. cause their Draw calls raise exponential