Ashen One HP's HPWater is getting better and better.

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Ashen One HP has enhanced their HPWater custom Unity shader with interactive caustics that respond naturally to touch and objects. The implementation uses cascaded view rendering of Depth and Normal GBuffers, ray marching with Atomic Add operations for intensity accumulation, followed by denoising, mipmap generation, absorption, and chromatic dispersion simulation during CSM sampling based on water normals.

Interactive Caustics Created for Custom Unity Shader