Blender Procedural Caustics Light Source

Procedural Caustics with variable options for animation
(noise affects performance)

Inputs:
FPS: Frames per second in the scene

Speed: Speed of the animation

Period 1-2-3: Period of each sine wave that animates the movement

Amplitude 1-2-3: Amplitude of each sine wave that animates the movement

Variance: How much the sine waves affect the animation

Smoothness: Smoothness of the Voronoi textures

Offset: Offset between the Vornoi textures that generate the caustrics

Scale: Scale of the Voronoi textures

Brightness: Brightness of the emissions

Color: Color of the output light

Outputs:
Emission: Emission Shader

For godrays: the effect needs a volumetric medium with some amount of scatter/absorption

Does NOT work on meshes, has to be applied on a light source,
check "use nodes" and copy-paste the node group

Only works on some light source types

original node setup by Polyfjord