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Only a single program was used to safely compress all textures in MTG. This was done using optipng with the following settings: ``` optipng -o7 -zm1-9 -nc -strip all -clobber %%f ``` The key command used is -nc, which stops color mode changes. I.e. any RGBA textures will remain RGBA textures, with none being changes to 8-bit indexed mode. The resulting compression: | type | size (Bytes) | % of original texture size | | --- | --- | --- | | Original | 247,571 | 100% | | Compressed | 152,189 | 61.5% | **Summary: Saves 93.14 KB** A script has been added: utils/optimize_textures.sh which will perform this compression automatically, assuming optipng is installed.
6 lines
243 B
Bash
6 lines
243 B
Bash
#!/bin/bash
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# Colors with 0 alpha need to be preserved, because opaque leaves ignore alpha.
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# For that purpose, the use of indexed colors is disabled (-nc).
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find -name '../*.png' -print0 | xargs -0 optipng -o7 -zm1-9 -nc -strip all -clobber
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