Note
You can render Caustics only with the mental ray for Maya renderer.
Caustics are light effects that caused by specularly (as opposed to diffusely) reflected or refracted light.
- Refracted caustics happen when specularly transmitted light bends through a transparent or semi-transparent object or volume
onto a diffuse surface.
- Reflected caustics happen when specularly reflected light bends through a transparent or semi-transparent object or volume
onto a diffuse surface.
Note
In the natural world, caustics are actually a form of global illumination, but they are treated separately by mental ray for
Maya, making it easier for you to control them.
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