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backend-vnc: implement set_dpms

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set_dpms() is used for sleep/wakeup. output_repaint_timer_handler() resets the
repaint_status if called while Weston is sleeping. If the timer is still active,
it will trigger a call to weston_output_finish_frame() which then triggers an
assertion, because the repaint_status is not REPAINT_AWAITING_COMPLETION.
Stop the timer and reset the repaint_status in this case to avoid this.

Schedule a repaint for WESTON_DPMS_ON to ensure that the current state is
rendered.

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
This commit is contained in:
Michael Olbrich 2025-05-06 15:18:47 +02:00 • committed by Marius Vlad
parent d076f2c519
commit afc19c2e94
1 changed files with 14 additions and 1 deletions
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15
libweston/backend-vnc/vnc.c
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@ -1093,6 +1093,19 @@ vnc_output_assign_planes(struct weston_output *base)
vnc_output_assign_cursor_plane(output);
}
static void
vnc_set_dpms(struct weston_output *base, enum dpms_enum level)
{
struct vnc_output *output = to_vnc_output(base);
if (level == WESTON_DPMS_ON)
weston_output_schedule_repaint(base);
else if (output->base.repaint_status == REPAINT_AWAITING_COMPLETION) {
wl_event_source_timer_update(output->finish_frame_timer, 0);
weston_output_schedule_repaint_reset(base);
}
}
static int
vnc_switch_mode(struct weston_output *base, struct weston_mode *target_mode)
{
@ -1145,7 +1158,7 @@ vnc_output_set_size(struct weston_output *base, int width, int height,
output->base.repaint = vnc_output_repaint;
output->base.assign_planes = vnc_output_assign_planes;
output->base.set_backlight = NULL;
output->base.set_dpms = NULL;
output->base.set_dpms = vnc_set_dpms;
output->base.switch_mode = vnc_switch_mode;
output->resizeable = resizeable;