To debug a frame using the Frame Debugger:
When a draw call event corresponds to the geometry of a GameObjectThe fundamental object in Unity scenes, which can represent characters, props, scenery, cameras, waypoints, and more. A GameObject’s functionality is defined by the Components attached to it. More info
See in Glossary, Unity highlights that GameObject in the Hierarchy.
If an event renders into a RenderTexture, Unity displays the contents of that RenderTexture in the Game view and Frame Debugger window. This is useful for inspecting how various off-screen render targets build up. For example: