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65c9f44a2f
Previously, the DDS texture loader incorrectly calculated mipmap dimensions
for uncompressed textures when the original dimensions
were non-power-of-two.
For example, given a 120×120 texture, the expected mipmap chain should be:
mipmap=0, size=120×120
mipmap=1, size=60×60
mipmap=2, size=30×30
mipmap=3, size=15×15
mipmap=4, size=7×7
mipmap=5, size=3×3
mipmap=6, size=1×1
But the loader was producing:
mipmap=0, size=120×120
mipmap=1, size=60×60
mipmap=2, size=30×30
mipmap=3, size=15×15
mipmap=4, size=8×8
mipmap=5, size=4×4
mipmap=6, size=2×2
This commit corrects the logic to properly compute width and height independently at each mip level.
Fixes issue #105136.