graesslin added a comment.
In https://phabricator.kde.org/D8582#162577, @davidedmundson wrote: > Do you think we'll need a compositor fallback? > > *If* we do have a compositor fallback, then I don't see the point of a DRM specific codepath, it's not going to have any slower having a transform in painting, and will just result in one code path not getting tested. > > To mostly answer my own question: > > In hwcomposer, it seems we have a transform attribute on the layer. > > For nested wayland we can set a transform on our wl_surface. > > For FBDev or nested in X, I don't think we can. But probably don't care? Yep. And that's why I don't want to add a compositor fallback. Doing the fallback looked quite complex when I looked at it due to multi screen. REPOSITORY R108 KWin REVISION DETAIL https://phabricator.kde.org/D8582 To: graesslin, #kwin, #plasma, subdiff Cc: davidedmundson, plasma-devel, kwin, bwowk, ZrenBot, progwolff, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart