output: fix performance issues with wlr_output_schedule_frame

1 files changed, 7 insertions, 1 deletions

diff --git a/backend/wayland/output.c b/backend/wayland/output.c
index 4fec1955..4a8fb0bf 100644
--- a/backend/wayland/output.c
+++ b/backend/wayland/output.c
@@ -21,9 +21,10 @@ static void surface_frame_callback(void *data, struct wl_callback *cb,
 		uint32_t time) {
 	struct wlr_wl_backend_output *output = data;
 	assert(output);
-	wlr_output_send_frame(&output->wlr_output);
 	wl_callback_destroy(cb);
 	output->frame_callback = NULL;
+
+	wlr_output_send_frame(&output->wlr_output);
 }
 
 static struct wl_callback_listener frame_listener = {
@@ -50,6 +51,11 @@ static bool wlr_wl_output_swap_buffers(struct wlr_output *wlr_output) {
 	struct wlr_wl_backend_output *output =
 		(struct wlr_wl_backend_output *)wlr_output;
 
+	if (output->frame_callback != NULL) {
+		wlr_log(L_ERROR, "Skipping buffer swap");
+		return false;
+	}
+
 	output->frame_callback = wl_surface_frame(output->surface);
 	wl_callback_add_listener(output->frame_callback, &frame_listener, output);