Cycles
（出典：Urchin）
参考：
Fake Caustics in Cycles | Urchin
Fake Caustic Material in Cycles – Blender Artists Community
Fake Caustics – Blender Artists Community
realistic light refraction for glass lenses – Blender Stack Exchange
How to create and animate the water reflection (Caustics) on an object? – Blender Stack Exchange
How to fake reflective caustics in Cycles? – Blender Stack Exchange
Glass Volume Material with Caustics and Colored Shadow – Blender Stack Exchange
Eevee
動画：
参考：
チュートリアル
Underwater Caustic and Volumetric Light (DE)
Alex Heskett
参考：
How to make convincing (and fake) caustics in #b3d! (@HotdogNugget) – Twitter
Glass for Eevee
動画：
Real Time Eevee Glass / Glass 2.0
入手：
Glass for Eevee – Glass 2.4 + Caustics Effect | Gumroad
Glass for Eevee – Glass 2.4 + Caustics Effect | Blend Swap
Procedural Water Caustics / Godrays
入手：
Procedural Water Caustics/Godrays (EEVEE Only) | Gumroad
Water / Underwater Shader
入手：
Water/Underwater Shader Preview v0.99 | Blend Swap
フォーラム：
Unlimited Planar Reflections & Refraction – Blender Artists Community