DISTANCE // Render the depth of the tile relative to the root as black to white // with maxDebugDepth being the maximum value. GEOMETRIC_ERROR // Render the distance from the camera to the tile as black to white // with maxDebugDistance being the maximum value. SCREEN_ERROR // Render the geometric error from black to white with maxDebugError // being the maximum value. NONE // Render the screenspace error from black to white with errorTarget // being the maximum value.