Snow

Simulates snow on a surface.

Note

If you assign Snow to geometry whose surface normals and tangents are constant (for example, those of a primitive cone), the Snow texture appears as a uniform color, and the difference between the Snow Color and Surface Color is non-existent.

You can find this texture in the Create bar. To apply this texture as a texture map, see Map a 2D or 3D texture.

Tip

To display snow on all objects in the scene, apply the Snow texture as a transparency map on a white material and then layer this material onto other shaders.
Try combining a Fractal bump map with a Snow color map. The snow only appears on the peaks and valleys of the bump mapped surface. For best results, set the Fractal bump map’s Alpha Gain and Filter values to a low number.
To simulate windswept snow, rotate the Snow texture by rotating the 3D Placement Object about a horizontal line.

Snow Color: The color of the snow on the top of the surface.
Surface Color: The color of the surface on which the snow lies.
Threshold: Determines the maximum slope that holds snow. The range is 0 (90 degrees from horizontal) to 1 (0 degrees from horizontal). The default is 0.5 (45 degrees from horizontal).
Depth Decay: The rate at which the snow color blends into the surface color. The range is 0 to 10. The default is 5.
Thickness: The apparent depth of the snow. Thickness controls the opacity of the snow (deeper snow is more opaque). The range is 0 (transparent) to 1 (opaque). The default is 1.

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