Glow VEX node

Simulates a hot glow effect to be used in the Fog context, and outputs color and alpha.

See also: Global Variables, Halo, Output Variables

This operator simulates a hot glow effect to be used in the Fog context, and outputs color and alpha.

Unlike Halo, which produces a generic, white-light glow, this operator is meant for glows around lights, flames, and other hot point sources.

The Core parameters control the white hotspot at the very center of the glow. For a softer, less hot glow, set the Core Brightness (corebright) value to 0.

The glow color is multiplied by the Opacity (Of) before being mixed with the Surface Color (Cf), so you do not have to take opacity into account yourself.

If the Surface Position (P), Position of Eye (Eye), Surface Color (Cf) Surface Opacity (Of), and Surface Alpha (Af) inputs are not connected, the global variables by the same names will be used instead. If you need to access the global variables directly, they are available from the Global Variables operator.

For a simple glow, connect the color output (color) and the alpha output (alpha) to the “Cf” and respectively “Af” inputs of the Output Variables operator.

Usages in other examples

Example name Example for