The Min component performs the channel-wise selection of the minimum channel from the channels supplied by the Source A and Source B inputs. The alpha channel is processed in the same manner as Red, Green and Blue.
Min is a map component, it can be located in the RGB Math category on the Components Bar. This component can output HDR colors. Like other RGB Math components, this component processes its inputs on a channel-wise basis, treating RGB channel values as signed floating-point numbers. For more information, see How Math Components Work.
Source A and B: Map Inputs (HDR)
These inputs provide the two colors to be compared. Both these inputs can accept HDR colors.
