output: add damage tracking via buffer age

1 files changed, 14 insertions, 9 deletions

diff --git a/backend/wayland/output.c b/backend/wayland/output.c
index 7e299ecc..5de18d41 100644
--- a/backend/wayland/output.c
+++ b/backend/wayland/output.c
@@ -38,22 +38,27 @@ static bool wlr_wl_output_set_custom_mode(struct wlr_output *_output,
 	return true;
 }
 
-static void wlr_wl_output_make_current(struct wlr_output *_output) {
-	struct wlr_wl_backend_output *output = (struct wlr_wl_backend_output *)_output;
-	if (!eglMakeCurrent(output->backend->egl.display,
-		output->egl_surface, output->egl_surface,
-		output->backend->egl.context)) {
-		wlr_log(L_ERROR, "eglMakeCurrent failed: %s", egl_error());
-	}
+static bool wlr_wl_output_make_current(struct wlr_output *wlr_output,
+		int *buffer_age) {
+	struct wlr_wl_backend_output *output =
+		(struct wlr_wl_backend_output *)wlr_output;
+	return wlr_egl_make_current(&output->backend->egl, output->egl_surface,
+		buffer_age);
 }
 
-static void wlr_wl_output_swap_buffers(struct wlr_output *_output) {
-	struct wlr_wl_backend_output *output = (struct wlr_wl_backend_output *)_output;
+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;
+
 	output->frame_callback = wl_surface_frame(output->surface);
 	wl_callback_add_listener(output->frame_callback, &frame_listener, output);
+
 	if (!eglSwapBuffers(output->backend->egl.display, output->egl_surface)) {
 		wlr_log(L_ERROR, "eglSwapBuffers failed: %s", egl_error());
+		return false;
 	}
+
+	return true;
 }
 
 static void wlr_wl_output_transform(struct wlr_output *_output,