The Channel Mapper node can be used to map the RGB channels of an input texture to a new RGB channel order. The same input channel can be mapped to multiple output channels (figure 2).

Figure 1: Channel mapper Node


Figure 2: The Channel Mapper node is used to map red, blue, and green from an incoming texture map into the same (0) channel for the plane on the right

Parameters

    • Input - Specifies the image for the operation.
    • Red channel index - The input channel index to map to the red output channel. 
    • Green channel index  - The input channel index to map to the green output channel.
    • Blue channel index  - The input channel index to map to the blue output channel.