Smooth lighting / ambient occlusion is incorrect (asymmetrical) on south-east and north-west corners

Affects 1.14.4pre4

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Please do not mark unreleased versions as affected.
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I can't tell if this affects Beta 1.8 or not, wanted to see if this was a new iaaue or whether it's been here since the introduction of smooth lighting.

Can you reproduce this bug in 1.16 pre release 5?

Yes, I can.

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We have removed it and added the latest released version

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If a bug upon its introduction with lighting ice is anything to go by, this bug goes as far back as Beta 1.3...

Mateus Pereira Milbradt don't pretend to be a bot

I've been able to screenshot this on a old version of Minecraft (beta 1.7.3) so it would be safe to assume this bug has been here since Beta 1.3...

It's outrageous to realize that this bug has been here since Beta. If you're a programmer you can tell that Minecraft's source code is so f*cked up. As a developer, I would have no interest in fixing such sh*t, but there is a guy who works on these rendering bugs and it seems he doesn't care about improving Minecraft's visuals!

simply not converting quads to tris at the tessellation stage fixes the problem

This is me using quads with my smooth lighting port to Alpha v1.2.6:

Therefore, there's no need for any custom interpolators as the GPU can handle it on its own just fine.

oh and @MotanGish, they have better things to be doing than fixing issues caused by janky interpolation done on triangles by practically every GPU in existence

Can confirm in 21w40a.

Can the title of this ticket be changed to clarify that the issue concerns asymmetry?

Done.

@TorutheRedFox Unfortunately, quads are deprecated in OpenGL 3.2, so this is not a viable solution anymore.

(I know it's been 3 years but I thought i'd clarify this)

Still an issue in 25w46a.

Still an issue in 26.1.2 and 26.2 Snapshot 5.

Woah encountered this way too! Literally present since 26.2-pre-2 and still till this in day 26.2-pre-3, 26.2-pre-4, 2-pre-5 and 26.2-pre-6 in my literal 87+ day world survival since 26.2-pre-2 that got updated gradually to 26.2-pre-6 every single releases! The most common visual glitch bug to see this is in natural generation of all generally every single caves you may discover and deeply observer what you have seen…. yeah.. the ambient occlusion when setting the Smooth Lighting: On is kinda weird sometimes

Oh wait maybe nahh or it’s too different i think i’ll send screenshots as to why