Another HLSL > GLSL project. This is one I’ve been working on for a while, translating it function-by-function, but it’s only this morning that I finally tried the code out.

It’s a translation of ‘IsoRaytrace.fx’ HLSL shader for vvvv by tonfilm, itself a reworking of Keenan Crane’s ‘Ray Tracing Quaternion Julia Sets on the GPU’ original CG code. So, this code has been translated twice, and still works!!

Virtually the whole thing is done in the Fragment Shader. It’s not really realtime- framerates are pretty low, but it does look cool.

Thanks to desaxismundi for helping me out with the control ranges.