Realtime Lightmap generating black patches

Hi guys,
We are working on a architecture visualisation project for large touch screens. We are having some trouble with realtime GI for interior. On some geometry, after precomputing the GI, it leaves black patches as you can see on the sofa.
Has this been seen before? What shall we do in order to get it to work properly? Any help would be appreciated. Thank you!

 

We do have that checked. That was the first thing we do when importing a mesh. Rather we use the asset importer script from unity itself to import the meshes. So we have the settings predefined.

 

Directional specular

 

@KEngelstoft : Are we missing anything obvious? Can you please help us solve the issue? I am a Unity evangelist through and through, but my boss is getting weary about the GI. I don't want to go UE. Please help me!

 

In my case it has always been the geometry. Do your sofa cushions have backs/bottoms. Is there a bottom on the sofa?

 

I'm also having some issues. As you can see, I have a couple of flat 3D geometry that are completely black for no reason. I tried to make my own lightmap UV but the problem is still there. I'm in Non Directional mode with baked GI only

 

Hi try also bumping up Irradiance Budget (to middle of slider) and Irradiance Quality (to middle of slider) and ~drop~ Precomputed Realtime GI Resolution to 3. I'm getting some "patchiness" issues as well. Irradiance Budget and Quality without too high a Precompute Resolution makes things nice.

 

Interesting. I may try that, but I want to "show off" my Realtime GI tests first.

 

Hi, I work with @aks_percept as Unity developer. As we are making the realistic architecture visualisation to show off Unity against our rival company which uses UE, I would very much like to use the directional-specular mode as it is fantastic. Anyhow, I'd like to report that the black patches go away while using non-directional mode. BTW, I'd also like to report that we use directional-specular for our exterior scene and it doesn't show any patches on any of the meshes. So I am not sure what's the culprit here. Baffled at the moment.

 

Getting some shadow "patchiness" with emissive-only lighting, even on "Non-Directional"?

 

Try checking Preserve UV's in the Lighting > Object panel. I had good results today doing that.

 

@srmojuze : Dude! You need to take a chill pill. I have been watching @KEngelstoft and @Joachim_Ante since the beginning of the Unity 5 beta. I have been following their advice since the very start. They are here to help and that's for sure! He might not say it, but I am saying it to you on Unity's and the community's behalf to chill down.

Just because you faced some issues, you can't take it out on Unity. Unity is doing some false advertisement? I think not. I have achieved some amazing things with Unity 5 so far which I wouldn't even dream with Unity 4. I am a game programmer as well, and I know how difficult it is to get everything right at the time of release, and my projects are tiny (6-8GB project sizes) compared to the codebase at Unity. There is no such thing as a perfect software. There will be bugs and it's not fair to shoot the messenger.

You were not enslaved into testing Unity5. It was YOUR decision.I too lost a lot of time and money in Unity 5 as my project was supposed to be out by Jan and I am still working on it. But i don't regret a single bit to have moved to U5beta. It has been frustrating some times, but I learn so f**king much during this time! Thanks to that, I know a decent amount of Unity5 even before it came out. It's a privilege to be a part of community that is so thriving and active. If you don't feel the same way, may be you shouldn't have in the first place.

I am not saying here that your question was illegitimate. Nor did KEngelstoft. He simply stated one of the unsaid rules of forum postings anywhere in the world. Don't hijack the unrelated thread. My post was related to Real-time GI, not baked. And KEngelstoft did revert with a suggestion too. And instead of thanking him, you are bitching about how his comment was not polite and he should improve his customer skills? Are you for real? Are you a delusional princess of some faraway land? Stop whining. The content is the king and not the tool. Create something good with whatever Unity5 provides. It will most definitely be better than Unity4.

This wasn't to insult you in any ways, so I won't matter what you reply to this. Just open your eyes and be grateful. That's all.

 

@topofsteel : I tried doing that as well, but there wasn't any particular improvement with directional specular lightmaps even with the uv's are preserved.

 

Really? I've had great success using Preserve UV's. I'm re-building my whole project now. Unfortunately, we're unable to publish Directional Specular content. But if I shoot for that now, i'll be there when we can. If you want, PM me, I'll take a shot at it.

 

Thank you for your patience. I have calmed down, deleting my post, I know I need to work with Unity community (company and developers) accordingly.

I apologise if I was hurtful and/or abusive.

 

My screenshot above was related to realtime, not baked. So I am in the realtime area.

But OK, I agree, let's trace the problems separately so everything doesn't get muddled.

Visual artifacts may appear similar or different and they may or may not be related to the same underlying cause.

I don't know, I sometimes just ain't good on the social media stuff as opposed to in real life.

I have liased with several Unity Technologies in the past few years but not @KEngelstoft until on this section of the forum.

Not sure why I blew up at him.

You are right, there are frustrations, but I have, as we have, decided to use this software for our purposes, to realise our own goals, etc.

Thank you everyone for your patience and understanding.

I apologise if I offended anyone and hurt anyone's feelings.

Regards,
srmojuze.

 

switching from directional spec to just directional mode may solve your issue, but then you won't have specular info.... This is a bug I believe

 

I have a similar problem. Black patches with "precomputed realtime GI" - Realtime Resolution: 4 - Non Directional:


And here: using Directional Mode: "Directional"


Somehow there seems to be a bug. When viewing the generated Map, some parts of the object are placed on holes on the Map:


When using Preserve UVs, the object is placed correctly on the Lightmap:


Another way to solve the problem was, to change the Realtime-Resolution to 3:
In this case, the object was placed on a different location on the Lightmap:


This problem occurs on different objects in my project. When new geometry is imported, those artifacts can sometimes disappear from one object an appear somewhere else.
I hope this helps to localize the problem somehow.