Since nobody on the Internet has bothered to release a SIMPLE demonstration of HOW TO render voxels without bells and whistles (Compute Shaders, Vulkan, CUDA, whatever other blasphemous technology no one uses) - I had to do it.
- <1000 LOC, C99, single header + demo program
- Voxel world represented with flat 3D array of material indecies
- Casts rays in arbitrary resolution
- Software rendering, no GPU
- Per-Voxel Point lights
- Per-Voxel Shadows
- Optional parallelism with OpenMP
- Optional checkerboard rendering
make, that is all. Demo uses app.h by Mattias Gustavsson, very cool one, but you can easily replace it with whatever framebuffer implementation you desire.
- Make light and shadows more correct and less ugly
- Transfer to fixed point instead of floats
- Replace rotation function with something more correct roll-wise
- Actual recursive tracing with mirrors and other things
- Shrink down voxels
- Further optimisations
You can help improve LEVR in a way I'll approve, otherwise, you could fork it and do whatever. Pull requesting here implies you're ok with releasing your contribution to public domain.
CC0 1.0 Universal, Public Domain