This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
DiscreteLodAndCullExampleRanges.MaxDZ.svg of the image so please check it doesn't get broken by modifying the page Maybe there will also be ContinuousLodAndCullExample MaxDZ svg in the near future An example of various DLOD ranges Darker areas are meant to be rendered with higher detail An additional culling operation is run discarding