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Screenspace ambient occlusion gets corners wrong — technical analysis

A technical article on nothings.org examines a known flaw in Screenspace Ambient Occlusion (SSAO), a widely-used rendering technique in 3D games and applications. The piece argues that SSAO does not correctly reproduce the appearance of corners, producing inaccurate shadow effects where surfaces meet. The analysis is aimed at graphics engine developers and rendering programmers.