OpenGL API-based Code - Detail Listing
OpenGL-rendering of Underwater Caustics
Mark Kilgard
/resources/code/samples/mjktips/caustics/
Light hitting the rippling surface of the water creates focusing effects or "caustics" on underwater surfaces (such as the walls of a pool). These effects are straightforward to generate using a second blended rendering pass with OpenGL's texture coordinate generation functionality and some caustic texture patterns
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