The Composite MaterialThe representation of the surface or volume properties of an object. node mixes up to 16 MaterialsA set of attributes or parameters that describe surface characteristics. using masks. This is much cleaner than using several chained Mix materials. If a mask is not connected, OctaneRender® uses the Material's Opacity parameter. The first Material pin becomes the base layer.
Figure 1: Adding more Materials to the Composite Material node
Add Input - Adds a new Material input to the end of the node.
Remove Input - Removes the last Material input.
DisplacementThe process of utilizing a 2D texture map to generate 3D surface relief. As opposed to bump and normal mapping, Displacement mapping does not only provide the illusion of depth but it effectively displaces the actual geometric position of points over the textured surface. - Displacement for the Composite Material surface.
Custom AOV - Writes a mask to the specified custom AOV.
Custom AOV Channel - Determines whether the custom AOV is written to a specific color channel (R, G, or B) or to all the color channels.
Material - The Material input. When several Materials are used, the first Material pin becomes the base layer.
Material Mask - Controls the Material’s opacity using an Input map. If a mask is not connected, the Material's opacity is used.