Ren'Py Image Filters?

[Deleted member 107261]

 

[anne O'nymous]

I haven't really had the time to play with them, but I'm pretty sure that

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can do this in realtime. And obviously, there's the good old

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way to do this.

Normally it don't really slow down the game.

 

[shark_inna_hat]

Try G'MIC. It has an online version, standalone version and it can work as a plugin for photosbop/gimp/krita/etc.
Link:

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