Fix big-endian swapping of SORTNORM2 and TMAP2POLY chunks - #7791
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swap_bsp_sortnorm2 swapped the bounding box at offsets 8 and 20, which re-swapped the front list offset and left the real box (at 16 and 28) unswapped. swap_bsp_tmap2poly never swapped the chunk's bounding box or normal. Both corrupted models using these chunks on big-endian builds. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
notimaginative
approved these changes
Sep 19, 2026
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swap_bsp_sortnorm2 swapped the bounding box at offsets 8 and 20, which re-swapped the front list offset and left the real box (at 16 and 28) unswapped. swap_bsp_tmap2poly never swapped the chunk's bounding box or normal. Both corrupted models using these chunks on big-endian builds.
The big-endian code was compile-checked by temporarily enabling it, since there's no big-endian hardware to test on.