Renders the scene graph, described by a tree of GskRenderNode instances,
ensuring that the given @region gets redrawn.
Renderers must ensure that changes of the contents given by the @root
node as well as the area given by @region are redrawn. They are however
free to not redraw any pixel outside of @region if they can guarantee that
it didn't change.
The @renderer will acquire a reference on the GskRenderNode tree while
the rendering is in progress.
Renders the scene graph, described by a tree of GskRenderNode instances, ensuring that the given @region gets redrawn.
Renderers must ensure that changes of the contents given by the @root node as well as the area given by @region are redrawn. They are however free to not redraw any pixel outside of @region if they can guarantee that it didn't change.
The @renderer will acquire a reference on the GskRenderNode tree while the rendering is in progress.