Camera2DConfig Type
Camera rendering configuration for 2D multi-camera support.
MonoGame analogue of the raylib-side Camera2DConfig.
Unlike the raylib version, Viewport is expressed in **pixels**
as a Rectangle, since MonoGame’s
GraphicsDevice.Viewport and scissor rectangles are pixel-based.
ValueNone means fullscreen (no custom viewport).
ClearColor doubles as the clear signal:
ValueNone = don’t clear (overlay on existing content),
ValueSome color = clear with this color before rendering.
Mibo