I've been working on an experimental libliftoff-based compositor:

github.com/emersion/glider

Today I did some power usage measurements. Without using hardware planes (ie. current wlroots), the compositor uses 550mW. With hardware planes (libliftoff), the compositor uses 300mW.

This is a win!

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More info on the test setup: the compositor displays a single surface, weston-simple-dmabuf-egl, with an X_TILED modifier.

Full powertop reports: composition sr.ht/EWKT.html vs. hardware planes sr.ht/L6_c.html (you'll need to download these and open them locally)

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