From VFXPedia

VoLight

This is a Volume Light macro that produces rays streaming from a central point, not unlike Trapcode's Shine and SpeedSix's SimpleRays (Box 05) plugins. Best with a source image on a black background. Fast to render, with selectable quality, noise and many other options. Written by Theodor Groeneboom, and originally posted on this Pigfly thread.

• Inputs

  Quality 

  Finer detailed rays, at the expense of render time

  Threshold 

  Brighter or darker rays

  Threshold Clamp 

  Affects the ray creation (use with Threshold)

  Original Colours 

  Rays inherit the colours of the source image.

  Light Center 

  Center point for the rays to stream from

  Light Length 

  Can be used to shorten the length of the rays.

  Light Angle 

  Twists the rays around the centre of the image.

  Light Glow 

  Adds a glow effect to the rays

  Post Blur 

  Softens the rays

  Smoke Precomp Size 

  Expand or shrink the size of the noise map

  Smoke Blend 

  Increase to add a smokey effect to the rays

  Smoke Detail 

  Add finer details to the smoke

  Smoke Contrast 

  Greater light/dark variation in the smoke

  Smoke Scale 

  Adjusts the overall scale of the smoke pattern

  Smoke Evolution 

  Increase to speed up smoke seething and change (slows render)

  VoLight Blend 

  Use to blend the whole effect back to the original image.

--- little update:

VoLight_v2

• Remove original 

  added "Remove original" slider at the buttom, to control source image opacity.