Render Light Volume for spotlights

Troubleshooting graphics
1

Anyone having an idea of how to render light volumes, like a cone from a spotlight in fog?



I know this is a “hard” problem in rendering but does anyone have some ideas on how to achieve it?

2

Uh, either you have something you can “reflect” on like snowflakes or something or you go basically for the light scattering effect locally.

3

There can be a mix of alpha and additive materials.



19Wbt.png1283×782
http://i.imgur.com/19Wbt.png



Some tips:

  • Have a look at FakeParticleBlow shader (alphas)
  • Try to use Fresnel falloff for Cylinder
  • Try to use camera view and object angle for appear/disappear some perts of the effect.
  • Try some experiments with simple alpha material and additive material.