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AAA – Analytical Anti-Aliasing

(blog.frost.kiwi)
513 points todsacerdoti | 2 comments | 20 Nov 24 08:03 UTC | HN request time: 0.001s | source
1. enbugger ◴[20 Nov 24 16:18 UTC] No.42195398[source]▶
As a non-gamedev person but just gamer, I should expect that this will replace TAA anytime soon? Should it replace TAA?
replies(1): >>42200211 #
2. Arelius ◴[21 Nov 24 01:46 UTC] No.42200211[source]▶
Basically no... Analytic AA is a really hard problem for video games, and I know of no general purpose solutions.

For font and 2D vector rendering it's likely, in fact afaik, some solutions, such as Slug already do.

But for 3d rendering I don't know of any solutions.

For an intuition, consider two triangles that intersect the same pixel.

Consider if say one has 20% coverage and the other 30%, does that pixel have 50% coverage, 30% by one, 20% by one and 10% by another, or any other conceivable mix? It's very difficult to say without selecting specific points and sampling directly.