RGB Multiply Map

Command entry:

Material Editor

Material/Map Browser

Maps

Standard

RGB Multiply

The RGB Multiply map is typically used as a Bump map, where you might want to combine two maps to achieve the correct result.

Left: No Bump map on the ashtray

Right: RGB Multiply used as a Bump map to enhance the texture of the ashtray

This map combines two maps by multiplying their RGB values. For each pixel, the red of one map is multiplied times the red of the second map, the blue times the blue, and the green times the green.

If the maps have Alpha channels, RGB Multiply can output either map's alpha channel or a new Alpha channel produced by multiplying the Alpha channel values of the two maps.

You can also make one of the maps a solid color, which tints the other map.

Interface

Color #1, Color #2: Click a map button to assign one of the maps. The check box toggles the map. To tint one of the maps, turn off the other map and click its color swatch to choose the tint color, using the Color Selector.

Alpha From group

This setting lets you determine how to generate alpha (transparency) for the map. If neither map has an Alpha channel, these options have no effect.

Map #1: Uses the first map's Alpha channel.
Map #2: Uses the second map's Alpha channel.
Multiply Alphas: Generates a new Alpha channel by multiplying the Alpha channels of both maps.