Caustics
In: Texture Generators > Noises
Description
Generates projected caustics based on a height map and a light direction.Comes in both Grayscale and color versions, differences are subtle but the color version adds color dispersioneffects. Light is cast from a single point, no Environment map is used.
Parameters
Output Color Space Raw, sRGB
Set output color space.
Photon Grid Size Auto, 512, 1024, 2048, 4096
Sets quality by adjusting grid size, but defaults to matching input. Can be used to speed up calculation.
Surface Height Scale 0.0 - 1.0
Multiplier to determine how the height is interpreted.
Surface Height Position 0.0 - 1.0
Set distance of refracting surface to projection.
Surface IOR 1.0 - 2.0
Set refraction index, in the color version this adds more color dispersion.
Photon Size 1.0 - 50.0
Photon size affects crispness of the effect.
Dispersion 0.0 - 0.01 (Color version only)
Affect just the color dispersion. Not visible when IOR is low.
Jittering 0.0 - 1.0
Add irregular jittering to the cast photon particles.
Light Position
Moves the light position. Also done through a gizmo in the 2D view.
Background Color (Color value) (Color version only)
Change the background color. Limited to black in the grayscale version.
Non Square Expansion False/True
Enable compensation of squash and stretch with non-square ratios.
Examples
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