$parallax

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An example of a Bumpmap with a Heightmap embedded in the alpha channel

Parallax enabled.

Parallax Disabled.

$parallax is a material shader parameter available on the PBR (Strata shader) shader in  Strata Source. It enables Parallax mapping on the surface of the PBR material.

This parameter also works with Thexa4's PBR shader.

Parallax Mapping

Main article:  Parallax mapping

Parallax mapping is a shading technique used to give perceived depth to brushes with this applied. In order to have this work correctly, you will need to have a Heightmap embedded in the alpha channel of your Normal map. This can be done with a program like GIMP, and a tutorial on how to do this can be found here

Additional Parameters

$parallaxcenter <float>

Defines the height of the highest point of the texture. Essentially how close to the face the texture appears. This is necessary to adjust correctly, otherwise the material may appear to stretch unrealistically past the end of the brush. "0.5" is a good starting value.

$parallaxdepth <float>

Defines the lowest point of the texture relative to the height. Essentially the intensity of the heightmap. "0.1" is a good starting value.

See Also

• $mraotexture
• Physically Based Rendering
• Category:PBR