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nukeykt / NBlood

Reverse-engineered ports of Build games using EDuke32 engine technology and development principles (NBlood/Rednukem/PCExhumed)
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Blood: Fix tiles broken from recompression attempts #844

Closed tmyqlfpir closed 2 months ago

tmyqlfpir commented 2 months ago

This PR fixes errors for tiles 9218 and 9219 introduced in #687 and #779.

Comparing to the original tiles before these two PRs, I compared the files by using a difference filter in photoshop and increased the brightness to exaggerate the pixels that differ.

Original vs after PR #779 originalcompressed

Difference current

Original vs after PR #779 original compressed

Difference difference

I went through and recompressed all tiles by using the original images before PR #687. PNGOUT and ECT were both used. The commands to compressed the images are as follows

pngout /f0 /b128 /kt /k0 /v /y
ect -9 -strip -keep --pal_sort=120 --allfilters
pngout /f0 /b128 /kt /k0 /v /y
Oplexitie commented 2 months ago

Went back and checked the assets of the other pk3's just to be sure this didn't affect them. Thankfully, this only affected the Blood assets that the op mentioned.

Spent a few hours figuring out what happened. The affected assets used PNGQUANT (a lossy image compressor), and I included them by accident. Apologies for my blunder.