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a9a9a0d1c5
Replace the default master clock with multiple frame clocks, each driving its own stage view. As each stage view represents one CRTC, this means we draw each CRTC with its own designated frame clock, disconnected from all the others. For example this means we when using the native backend will never need to wait for one monitor to vsync before painting another, so e.g. having a 144 Hz monitor next to a 60 Hz monitor, things including both Wayland and X11 applications and shell UI will be able to render at the corresponding monitor refresh rate. This also changes a warning about missed frames when sending _NETWM_FRAME_TIMINGS messages to a debug log entry, as it's expected that we'll start missing frames e.g. when a X11 window (via Xwayland) is exclusively within a stage view that was not painted, while another one was, still increasing the global frame clock. Addititonally, this also requires the X11 window actor to schedule timeouts for _NET_WM_FRAME_DRAWN/_NET_WM_FRAME_TIMINGS event emitting, if the actor wasn't on any stage views, as now we'll only get the frame callbacks on actors when they actually were painted, while in the past, we'd invoke that vfunc when anything was painted. Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/903 Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/3 https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1285 |
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