Re: [PATCH v3 0/4] MR3234: winewayland.drv: part 5: window_surface flush optimizations

[Alexandros Frantzis (＠afrantzis)]

On Thu Jul  6 08:34:38 2023 +0000, Rémi Bernon wrote:
> If you tell the compositor about the damaged regions, do you still
> actually need to copy the data outside of it from the previous buffer?

Sadly, yes, the whole buffer we commit needs to be fully valid/up-to-date, as the compositor is free to read from outside of the damage region as needed. Wayland surface damage is only an optimization hint for the compositor.