Matias N. Goldberg efbe9237cc Fix integer underflow when rounding up in VoxelGI ...

The code wanted to divide and round up:
 - 0 / 64 = 0
 - 63 / 64 = 1
 - 64 / 64 = 1
 - 65 / 64 = 2

However when the dividend was exactly 0 it would underflow and produce
67108864 instead.

This caused TDRs on empty scenes or extremely slow performance

Fix #80286

(cherry picked from commit e783e32108)

2023-09-21 14:09:19 +02:00

157 KiB

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