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Question by Bruno_Chaves · Jun 20, 2017 at 05:35 PM · errorlightingbakinglighting bug

Appears Black and White squares errors when Bake lightmap

Hello guys, I'm here today asking for your help. There are some black and white squares that keep appearing when i bake lightmap solution and i don´t know what causes them or how to solve it. You can see on printsreen the error. I would appreciate your help or any suggestions might have. alt text Thanks in advance :D

error-2.jpg (202.0 kB)
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avatar image LucidTurnip · Aug 23, 2017 at 09:11 AM 0
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Anyone know how to fix this?

avatar image IonutDragan · Mar 28, 2020 at 04:20 PM 0
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How do you solved this issue?

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Answer by swansonator · Jan 18, 2019 at 07:12 PM

I have the same problem but it's just white squares, and those white squares produce tons of light onto the scene like they are atomic explosions. I'm not usually baffled by lighting issues these days but randomly occurring (from bake to bake) self illuminating squares (when there's nothing in the scene that would cause such a phenomenon) is just as likely to get solved as your question. See the problem with Unity's community is that ALL graphical phenomenon issues are inherently difficult for users to articulate questions about and for members to search for answers to. Things that are VISUAL can be named or labeled in infinite ways and these forums are stupid when it comes to helping people solve visual problems. Don't expect a solution either because almost all visual problems are so repetitively asked that members feel like you should have just found the already-answered version of your question or perhaps that members won't ever find your question because there's a continually growing glut of unanswered questions a mile long and yours is nothing easy or too special to not answer. Good Luck...meanwhile I hope some brilliant human at Unity is taking note of the problem with trying to search for answers to visual phenomenon in these forums. My suggestion to them has always been to create a visually laid out interface where few words are used and instead visual representations of what you might be experiencing is shown (think google image search results) in a large grid of many many images that show off (and highlight) the section of the image that is discussed within the picture if you were to click on the picture. Once the link is clicked there may be subcategories of nuanced issues relating to it. This way similar questions or exact same questions can be resolved within one defined area that people can read and get full answers to. But I've explained all this 2 years ago and Unity obviously has done nothing to revolutionize one of the most common problems with asking questions - knowing how to ask the question with the right combination of words, otherwise you don't find the solution to your problem and worst of all - you don't know if you're the first person to ask the question or if you simply aren't asking it the right way in order to find dozens of already-answered threads - and it's the "not knowing which of those options is the case" that is causing an inflation of this gigantic collection of threads and growing number of unanswered questions. Do your job Unity!

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Answer by c_james · Sep 28, 2017 at 12:48 PM

Did you ever find a solution to this? I only get it with the progressive lightmapper

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Answer by rafaziel · Jul 16, 2020 at 07:54 PM

It also happened to me, I tried to place the rectangle of the area light that does not protrude outside the object to be illuminated, the square of the area of light must be equal to or somewhat smaller than the object itself.

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Answer by Harold_83 · Dec 17, 2021 at 02:49 AM

I'm having the same issue in 2021. I had this issue in an earlier version of Unity but I can't remember how I fixed it.alt text alt text


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Answer by bobjomac · Feb 16, 2022 at 05:11 PM

Hello! I also ran into this issue in which random square hotspots would appear on my environment after a finished light bake. In my case the issue was caused by a pair of Area Lights I had located towards the ceiling in my scene. One area light was illuminating the room facing in a downward projection, while the other was facing directly towards the ceiling at a lower intensity. From what I can tell the reasoning behind the hotspots (glitch?) was because both the Area Lights were sharing the same Y Position facing opposite directions. Once I moved the upward facing Area Light and re-baked everything was good to go! Hopefully this helps!

Cheers.

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