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desktop/output: Wait for all pageflips to clear

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To allow a non-blocking modeset to succeed, we need to wait for all
pageflips to clear first.
This commit is contained in:
Kenny Levinsen 2024-10-15 16:21:49 +02:00
parent dd063a0ef7
commit 16f9ca03b3
1 changed files with 58 additions and 1 deletions
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59
sway/desktop/output.c
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@ -391,12 +391,69 @@ void update_output_manager_config(struct sway_server *server) {
ipc_event_output();
}
// Placeholder while all render tasks clear up
static void handle_frame_nop(struct wl_listener *listener, void *user_data) {}
static void handle_frame_clear(struct wl_listener *listener, void *user_data) {
struct sway_output *output = wl_container_of(listener, output, frame);
output->frame.notify = handle_frame_nop;
sway_log(SWAY_DEBUG, "Render task for %s cleared", output->wlr_output->name);
wl_list_for_each(output, &root->all_outputs, link) {
if (output == root->fallback_output) {
continue;
}
if (output->frame.notify != handle_frame_nop) {
return;
}
}
// All done!
sway_log(SWAY_DEBUG, "All render tasks cleared, modestting");
wl_list_for_each(output, &root->all_outputs, link) {
if (output == root->fallback_output) {
continue;
}
output->frame.notify = handle_frame;
}
apply_stored_output_configs();
}
static int timer_modeset_handle(void *data) {
struct sway_server *server = data;
wl_event_source_remove(server->delayed_modeset);
server->delayed_modeset = NULL;
apply_stored_output_configs();
bool wait = false;
struct sway_output *output;
wl_list_for_each(output, &root->all_outputs, link) {
if (output == root->fallback_output) {
continue;
}
if (output->wlr_output->frame_pending) {
output->frame.notify = handle_frame_clear;
wait = true;
sway_log(SWAY_DEBUG, "Awaiting render task on %s", output->wlr_output->name);
} else {
output->frame.notify = handle_frame_nop;
}
}
if (!wait) {
// Nothing to wait for, go ahead
sway_log(SWAY_DEBUG, "No render tasks to wait for, modesetting");
wl_list_for_each(output, &root->all_outputs, link) {
if (output == root->fallback_output) {
continue;
}
output->frame.notify = handle_frame;
}
apply_stored_output_configs();
return 0;
}
return 0;
}