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Only a single program was used to safely compress all textures in MTG. * `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. utils/optimize_textures.sh performs 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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