May 21, 2026
Triangles, tantrums, and throwbacks
Triangle Tessellation with Clamped Parallelograms
A 20-year-old graphics trick is back, and the comments are absolutely losing it
TLDR: A developer revisited an old Xbox 360-era way of smoothing 3D shapes and claims it can be made cleaner and less glitchy today. Commenters were torn between calling it a brilliant revival and dunking on it as a gorgeous fix for a problem modern graphics has already moved past.
A deep-cut graphics post about making old-school triangle smoothing behave better somehow turned into catnip for the internet’s most opinionated render nerds. The author revisits a feature that dates back to the 2005 Xbox 360 era and basically asks: what if the core idea was good, but the way it got built into modern game hardware was the problem? In plain English, this is about making 3D shapes look smoother on screen without ugly visual jumps when detail levels change. And yes, people had feelings.
The strongest reaction was a split between “finally, someone is fixing this weird old mess” and “cool math, but the industry already moved on”. One camp cheered the whole thing as a smart second chance for a neglected idea, especially because the code is open and playable in a browser. The other camp brought the classic cynical energy: if this was so great, why didn’t it win 10 years ago? That kicked off the usual comment-thread skirmish over whether elegant research matters if game studios have already picked other tools.
Naturally, the jokes flew. People compared the article to archaeology for graphics programmers, mocked the phrase “fractional tessellation” like it was a prestige indie band, and laughed at the AI-assisted line where the author basically said, “I had C++ code and told Claude to make it JavaScript, good luck.” That may have gotten the biggest grin of all: half the crowd was impressed, and the other half was like, we are absolutely living in the weirdest timeline.
Key Points
- •The article traces DirectX 11-style hardware tessellation back to the Xbox 360 in 2005 and frames it as part of the evolution toward film-quality real-time rendering.
- •It argues that while hardware tessellation did not become the complete solution for its intended rendering use cases, its underlying ideas remain useful.
- •The described algorithm aims to transition between triangle tessellation patterns without visible popping and is shared as MIT-licensed JavaScript adapted from C++ code.
- •Dx11 tessellation uses floating-point edge tessellation factors in the range [1,64], allowing smooth interpolation between tessellation levels.
- •The article explains how subdivision points can be introduced incrementally, then adjusted for even spacing and mirrored to preserve symmetry and prevent cracks between adjacent triangles.