touch_default: optimize PNG images yet again.

FWGS / xash-extras

Extras files for Xash3D FWGS engine. Includes textures for WON-style menu, some recommended configs, etc

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Closed nekonomicon closed 2 years ago

nekonomicon commented 2 years ago

I didn't tried to use optipng with -nb -nc options before.
It seems optipng always forces to use quantinizer to create indexed image with palette before any compression tests, but produced indexed image can have bad compression ratio.
Xash3d renders indexed images like edit_reset.png incorrectly, so there currently grayscaled image with alpha.