Real-time synthesis and rendering of ocean water ..

Distant reflections (sky and clouds) are rendered in real-time in a cubemap which is then filtered for physically based lighting. Local reflections, showing near objects, are rendered to a separate texture. The two textures are then combined in the water shader according to the Fresnel term. The engine also simulates underwater reflections and the phenomenon of total internal reflection (TIR) when the camera is underwater and looks at the surface.

“Real-time synthesis and rendering of ocean ..

GPU method for real-time editing, synthesis, and rendering of infinite ..

SIGGRAPH 2017 Papers - Real-Time Rendering

The water surface is rendered with a sophisticated shader that combines all data generated in the previous rendering passes. The shader takes advantage of the latest research on specular anti-aliasing and physically-based-rendering in order to generate photorealistic visuals in real-time.

SIGGRAPH 2017 papers on the web

For the rendering of caustics, Typhoon uses a novel technique called Cascaded Caustic Mapping, inspired by cascaded shadow mapping and by ideas from published papers. The technique runs entirely on the GPU and generates caustic textures of variable level of detail in real-time which are then mapped on the underwater environment. The caustic shaders also support chromatic dispersion.

Real-time multi-band synthesis of ocean water with new iterative up-sampling technique
Mitchell, "Real-Time Synthesis and Rendering of Ocean Water," ATI Technical Report, April 2005

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Realistic, real-time rendering of ocean ..