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 |
---|---|---|
Surface glossiness |
From vignette |
|
Gloss variation (gray-scale image) |
None |
|
Surface roughness |
40% |
|
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 less reflective than material types such as stone or metal. Furthermore, the same amount of gloss specified for one often results in a different reflection effect than the other. The attribute gloss=
and roughness have a fairly wide gamut if type=
is not specified or is set to 0
.
glossmap=
Used to control the glossiness of a material on a pixel-by-pixel basis.