For future reference, here's a paper which presents a DDA to visit each cell touched by a ray:

http://www.cse.yorku.ca/~amana/research/grid.pdf

@Koen Yeah i feel this is the case too, it almost works but at certain positions and angles entire coarse voxel regions are culled as can be seen below in this video:

https://i.gyazo.com/d9453d12ceffc9635772a8e6481c4b4f.mp4​​

My only guess is the ray must jump into the wrong occupancy map voxels whic…