--- title: Corners Don't Look Like That: Regarding Screenspace... description: A photographic investigation into whether screenspace ambient occlusion (SSAO) accurately represents real-world corner lighting. The author took calibrated... canonical: https://daily.dev/posts/corners-don-t-look-like-that-regarding-screenspace-ambient-occlusion-u2j2rkdj7 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Corners Don't Look Like That: Regarding Screenspace Ambient Occlusion | daily.dev og:description: A photographic investigation into whether screenspace ambient occlusion (SSAO) accurately represents real-world corner lighting. The author took calibrated... og:url: https://daily.dev/posts/corners-don-t-look-like-that-regarding-screenspace-ambient-occlusion-u2j2rkdj7 og:image: https://api.daily.dev/og/posts/u2j2rkDj7.png og:image:alt: Corners Don't Look Like That: Regarding Screenspace Ambient Occlusion og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Corners Don't Look Like That: Regarding Screenspace Ambient Occlusion **[Hacker News](https://daily.dev/sources/hn)** · 15 min read · 0 upvotes · 0 comments ## Summary A photographic investigation into whether screenspace ambient occlusion (SSAO) accurately represents real-world corner lighting. The author took calibrated photographs of room corners under various lighting conditions, sampled pixel brightness values across edges, and graphed the results. The findings show that real-world corner darkening is subtle, often barely measurable, and frequently what appears to be corner darkening is actually a perceptual Mach banding effect or the result of soft shadows rather than true ambient occlusion. The author argues that SSAO implementations typically over-darken concave corners, producing unrealistic results, and that the only time strong edge-darkening occurs in reality is when the facing surface is already darkened by another cause like a soft shadow. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Spatial hashing for raytraced ambient occlusion](https://daily.dev/posts/spatial-hashing-for-raytraced-ambient-occlusion-muvefftbp) · Interplay of Light · 0 upvotes · 0 comments --- Tags: [#game-development](https://daily.dev/tags/game-development), [#graphics-programming](https://daily.dev/tags/graphics-programming) [View this post on daily.dev](https://daily.dev/posts/corners-don-t-look-like-that-regarding-screenspace-ambient-occlusion-u2j2rkdj7) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Corners Don't Look Like That: Regarding Screenspace Ambient Occlusion","url":"https://daily.dev/posts/corners-don-t-look-like-that-regarding-screenspace-ambient-occlusion-u2j2rkdj7","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/corners-don-t-look-like-that-regarding-screenspace-ambient-occlusion-u2j2rkdj7"},"datePublished":"2026-07-20T16:20:09.970Z","dateModified":"2026-07-20T16:20:47.235Z","description":"A photographic investigation into whether screenspace ambient occlusion (SSAO) accurately represents real-world corner lighting. 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