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yshui / picom

A lightweight compositor for X11 with animation support
https://picom.app/
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Is it possible to cache blurred background for gaussian/box? #909

Open WhiteBlackGoose opened 2 years ago

WhiteBlackGoose commented 2 years ago

First of all - thanks for this amazing compositor!

The problem is, I'm on a laptop from 2011, and the DRM module doesn't work for its gpu, so all graphics are made on a weak CPU.

So... gaussian and box methods for blurring work very slowly. Which is, I guess, expected - but it's due to the fact, that it renders blurring all the time, right?

So my question is. Can it somehow cache the blurred background and just basically substitute necessary parts of it when rendering windows, instead of re-rendering the whole thing multiple times a second?

I have no idea how it should work, it's just my humble thought.

absolutelynothelix commented 1 year ago

i think it won't be that hard to implement it for combination of blur and transparent clipping (though would be good to fix #936 for now), since we just have to cache blurred wallpaper and that's it, but overall i don't think that it will be that easy, though it sounds really beneficial.