What changed in EDuke32, build by build

Some of the ROR code was operating under the assumption that drawasks always correspond to one call of polymer_displarooms(), but that's not necessarily the case; external view draws all sectors from the top polymer_drawrooms(), which was causing crashes. Just ignore the sector mask queues in external view mode, we already don't draw masked walls.

Check all the bunch siblings if we get a floor/ceiling hit and walk them if their own planes hit.

When walking the sectors in displayrooms, detect floor/sector masks to place them in a mask queue. The queues are allocated on the heap, but a stack pointer is maintained by the displayrooms to allow it to play nice with mirror recursion. Right now the masks are drawn after all of drawmasks is finished; that means you can see sprites and wall masks through sector masks, but not the opposite. There is a slight attempt at blending far to near, but nothing too conclusive yet; that means that in some cases some sector masks won't be visible through other sector masks, but it should work for trivial cases. The next step would be to copy all the drawmasks logic into Polymer and have it (attempt to) properly interleave sector masks where they belong in the blending order.

Previously they would get counted both as 1-way walls for immediate drawing and as mask walls for delayed drawing.

Doesn't actually matter that much.

This fixes a ridiculous interaction problem between non-black fog and additive lighting passes. Plagman is stupid.

results.

tile.

they happen to exactly go the the center of the screen, but not that big of a deal.

not prompt you for shader paths, collapsed into a single file and to avoid transforming normals. This might break for rotations, but I don't think such transforms should happen with a straight import from ASE -> export to MD3.