output-layer: add support for scaling buffers

This allows callers to set a destination size different from the
buffer size to scale them.

The DRM backend supports this. The Wayland backend doesn't yet
(we'd need to wire up viewporter).

1 files changed, 6 insertions, 2 deletions

diff --git a/examples/output-layers.c b/examples/output-layers.c
index d2f3c188..2ccfafe1 100644
--- a/examples/output-layers.c
+++ b/examples/output-layers.c
@@ -74,8 +74,12 @@ static void output_handle_frame(struct wl_listener *listener, void *data) {
 		*layer_state = (struct wlr_output_layer_state){
 			.layer = output_surface->layer,
 			.buffer = output_surface->buffer,
-			.x = output_surface->x,
-			.y = output_surface->y,
+			.dst_box = {
+				.x = output_surface->x,
+				.y = output_surface->y,
+				.width = output_surface->wlr_surface->current.width,
+				.height = output_surface->wlr_surface->current.height,
+			},
 		};
 	}