EGL is the way to go for Linux on Wayland and X11. I don't know how to do it yet, but it seems the solution is to use DMABUF with EGL and share it with GTK (I suspect on a GtkGLArea widget, but not sure yet).
Firefox and WebKit GTK uses the same technic. Gtk4 does not allow application painting, so direct surface context is not possible. We are using gtk3 and it is still possible, but I want to use GtkHeaderbar and clean up glass code. Since it means sharing the window/surface with GTK, direct surface rendering also doesn't work. https://mozillagfx.wordpress.com/2021/10/30/switching-the-linux-graphics-stack-from-glx-to-egl/ https://blogs.igalia.com/carlosgc/2023/04/03/webkitgtk-accelerated-compositing-rendering/ https://blog.gtk.org/2021/05/10/adventures-in-graphics-apis/ It's been nice to learn. Em seg., 16 de out. de 2023 20:51, Thiago Milczarek Sayão < thiago.sa...@gmail.com> escreveu: > Hi, > > I am investigating about prism on Wayland. > > It looks like we could just replace the GLX calls on X11 backend to EGL > and it will work on both (maybe rename it). > > It will need some work to pass the native display around - it assumes X11 > Display everywhere and it could be a Display or a wl_display. > > -- Thiago. > > Em dom., 15 de out. de 2023 às 16:06, Thiago Milczarek Sayão < > thiago.sa...@gmail.com> escreveu: > >> Hi, >> >> Update: It now works on wayland with -Dprism.order=sw >> >> >> >> Em dom., 15 de out. de 2023 às 10:49, Thiago Milczarek Sayão < >> thiago.sa...@gmail.com> escreveu: >> >>> Hi, >>> >>> https://github.com/openjdk/jfx-sandbox/tree/tsayao_wayland >>> >>> I did some experiments here. So far, so good. >>> >>> 1) Replaced GDK events for Gtk Signals - It's the way to go for newer >>> gtk. >>> 2) Replaced drawing directly in the window and added a GtkDrawingArea >>> with a GtkHeaderBar which allows control over the whole window >>> size and allows to get rid of extents* calls - this cleans up a lot. >>> 3) Unified the WindowContext to clean it up. >>> >>> I also integrated the IME replacement proposed here: >>> https://github.com/openjdk/jfx/pull/1080 >>> >>> It almost runs with software rendering on Wayland, but something still >>> touches X11. >>> >>> To finally make it work on Wayland it requires to implement it on prism >>> es2. I see that there's a EGL part of Monocle. I still don't completely >>> understand it, but wouldn't it work as a drop-in replacement? >>> >>> -- Thiago. >>> >>> >>>
