Multiple bounce refractions using glsl refract()

ya, that the bvh lib is key. Was kinda hoping you guys had something internally or in the community that did what bvh does. found this but its non-gpu based and the dev stopped working on it.

sure would be nice to have a bvh lib in BJS, thats a big ask but would open up a lot of possibilities for rendering.

I will try to tinker with bvh a little in the mean time but you’ll get a lot of loves if someone internally could look into this.