411 REFERENCE · Wikibooks
Guide to Game Development/Theory/Miscellaneous theory/Depth buffer
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About
A depth buffer ensures that items are drawn in the correct order. It's a list of all of the items that need to be drawn to the scene, and it puts them in the order of how close they are to the camera.
thumb|300px|This is an example of a scene rendered with no depth buffer.
References
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