The per-column sprite gate blanked an overlay's WHOLE column wherever a
nearer body touched it — a treasure chest masked the warp veil all the
way to the ceiling. Each column now remembers its nearest sprite's
vertical span as well as its depth, and every overlay family (veils,
ghost walls, lintels, rising conjurations) draws in segments above and
below the covered band, sampling the matching slice of its texture — so
the shimmer wraps the chest instead of vanishing over it.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>