Paul-Élie Pipelin - Webgl tracer

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Shader can take time to compile at first (~20s). It can freeze browser during that delay, don't panic 🙂.
/!\ WIP, see TODO below
Use mouse to move camera and keys (WASD/ZQSD + CTRL + SHIFT) to navigate through scene.
Not supported on phones.

Shadowing

Naive

Last vertex samples light

Iterative

Fancy random

Fix imperfect handling of pdf for specular
Some GPU do not compute sphere visibility properly which introduces a bias for iterative
CT GGX
Light tracing
Moving objects
Anisotropy
Improve diffractive fresnel

Frambebuffer saving and scene saving method inspired by https://wulinjiansheng.github.io/WebGL_PathTracer/. which is pretty good.
Structs & intersection methods from https://www.shadertoy.com/view/wlyGWc.