Retired

Pages describing code that no longer exists.

They are kept because the reasoning in them was real and cost something to arrive at, and because a decision is easier to revisit when you can still read what it replaced. Nothing here describes the engine as it is.

SDF ray-marching and its BVH

The engine’s original rendering path was signed-distance-field ray-marching, accelerated by a BVH that several consumers shared. Both crates — kooch_sdf and kooch_bvh — were deleted in July 2026.

The technique died; the data did not. Signed distance fields remain the representation behind the voxel and dual-contouring work, where they are extracted to meshes that go through the same GPU-driven meshlet pipeline as everything else. What was retired is the renderer that marched them directly.

The current path is described in Render Pipeline.