пт, 21 окт. 2022 г., 21:11 Phyllis Smith <[email protected]>:
> >> and all this because adventurious user 'goat' reported he had better luck >> with cin-gg on arm single-board computer under Wayland/Xwayland - namely >> timeline scrolling performance. >> -- >> > Wow, that is interesting and I really wonder why that would be -- it must > be some implementation feature of Wayland ? > I think yes? On most modern systems X server uses 3d acceleration via glamour module, and 3d part on those singleboard computers tend to use even more weird layout for their buffers - so you can't just read texture via cpu (memcpy), it must be detiled, sometimes in software ... and wayland does some of this via dma-bufs (?) kernel level shared buffer implementation .. so it can do things not defined or allowed in Opengl/egl or so I gathered from forums .... >
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