Editing Main Render Settings (section)

== Skin - MatCap ==
[[File:Skin MatCap.jpg]]

=== MatCap Texture ===
MatCap textures (short for "Material Capture") are a simplified way of simulating reflections. The direction you are looking, combined with the surface angle, determine where samples are taken from the texture, which creates the appearance of a reflective surface. The reflection will not be of the surrounding world, but rather is determined entirely by the MatCap texture itself.

=== MatCap Mask ===
An optional mask can be applied that will determine the strength of the MatCap, from 0-1. The source of this mask can come from 5 different locations:

* The red channel of a separate "MatCap Mask Map"
* The alpha channel of the "MatCap Texture"
* The alpha channel of the "Albedo Map"
* The alpha channel of the "Metallic Map"
* The red channel of the "Metallic Map"

=== Blend Add / Blend Replace / Emission Strength ===
"Add" will add the MatCap albedo to the skin albedo.

"Replace" will substitute the MatCap albedo instead of the skin albedo. This is usually the prefered behaviour.

"Emission" will add the MatCap albedo as additional light.

=== Specularity ===
Normally, this should be set to 1 so that the appearance of the MatCap changes as the viewing angle changes, giving the illusion of a reflective surface. However, if specularity is set to 0, then the MatCap's appearance will depend entirely upon the direction that the surface is facing in the world, regardless of the viewing angle.