Here's the code. Finally, the current implementation matches the original in terms of capability. It also significantly exceeds the original in terms of performance, and contains a version of the LRU allocation scheme (even if in its current state it isn't doing anything). This is almost a complete implementation of Cyril Crassins GigaVoxel method, albeit missing the spatial mipmapping, and about a thousand visual tweaks, most of which depend on the mipmapping. I can almost taste the Global Illumination.