Add a refcount to canvases.

2 files changed, 11 insertions, 0 deletions

diff --git a/libdimension/dimension/canvas.h b/libdimension/dimension/canvas.h
index 6938c0e..f33fc88 100644
--- a/libdimension/dimension/canvas.h
+++ b/libdimension/dimension/canvas.h
@@ -39,6 +39,8 @@ typedef struct {
    * at (a,b) is accessible as pixels[b*width + a].
    */
   dmnsn_color *pixels;
+
+  dmnsn_refcount *refcount; /**< @internal Reference count. */
 } dmnsn_canvas;
 
 /* Forward-declare dmnsn_canvas_optimizer */
diff --git a/libdimension/dimension/scene.h b/libdimension/dimension/scene.h
index c182d85..ffe5fb3 100644
--- a/libdimension/dimension/scene.h
+++ b/libdimension/dimension/scene.h
@@ -93,6 +93,15 @@ void dmnsn_delete_scene(dmnsn_scene *scene);
 void dmnsn_initialize_scene(dmnsn_scene *scene);
 
 /**
+ * Set the output canvas for a scene.
+ * @param[in,out] scene   The scene for which to set the canvas.
+ * @param[in]     canvas  The canvas to set.
+ */
+void dmnsn_scene_set_canvas(dmnsn_scene *scene, dmnsn_canvas *canvas);
+
+/**
  * Add an object to a scene.
+ * @param[in,out] scene   The scene to which to add the object.
+ * @param[in]     object  The object to add.
  */
 void dmnsn_scene_add_object(dmnsn_scene *scene, dmnsn_object *object);