Thanks for explaining, Victor. On Mon Jul 1, 2019 at 8:54 PM Victor Berger wrote: > I never imagined to actually replace libwayland with wayland-rs, but I > understand how my original message may have felt like this. Sorry for > not being clear enough.
Phew. This came on the ends of some similar discussions in #wayland (which I admittedly heard about secondhand) so I was worried. > Now, I've partially solved this issue for Rust by also making a > full-rust implementation of the Wayland protocol in wayland-rs. But as > soon as one needs to interact with something else (notably Mesa for > OpenGL or Vulkan), this is an immediate no-go, as Mesa and the client > app must use pointers coming from the same Wayland implementation. > This is why I came up with the idea of introducing an alternate API in > libwayland, which would be more fundamental and more FFI-friendly. > This would allow easier interop between the different languages and C > libraries like Mesa or GTK. Ah, the mesa problem. This makes a lot of sense. Another possible approach would be reimplementing src/egl/drivers/dri2/platform_wayland.c (and similar Vulkan code) in Rust - Mesa needn't be the only implementation of the linux-dmabuf protocol. I suspect we have access to enough mesa internals to implement it outside of mesa, but if not I would approve of an effort to bring more of these things out into the public API. I think this kind of approach would fare better than extending libwayland in this manner. > However I have no interest in developing a Rust implementation of > libwayland's API if I cannot use it in a better way than the C > implementation from Rust. So if this project is not welcome, I'll just > stick to what I have currently: "You can use the Rust implementation > only if you don't need Vulkan, openGL, or any interop with a > Wayland-aware system library". Isn't the latter more of the RiiR way, anyway? ;) -- Drew DeVault _______________________________________________ wayland-devel mailing list wayland-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/wayland-devel