Reflections

Vignettes can be authored to include near-3D reflection data.

If so authored, the following material attributes are used to define the material’s reflective surface properties:

Attribute

Description

Default

gloss=

Surface glossiness

From vignette

glossmap=

Gloss variation (gray-scale image)

None

rough=

Surface roughness

40%

type=

Material type

0 (unknown)

The renderer adjusts the range of the gloss= and rough= attribute according to type=. Some material types such as fabric are generally less reflective than material types such as stone or metal, and the same amount of gloss specified for one will result in a different reflection effect than the other. gloss=and roughness have a fairly wide gamut if type= is not specified or is set to 0.

glossmap= can be used to control the glossiness of a material on a pixel-by-pixel basis.

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