visible squares in baked lightmap

Hello,

this one should be easy for you guys: What do I need to change to get a nice light cone from that truck?
I use baked lightning and the truck has two spot lights attached.

But there is a square visible. I already increased the Lightmap resolution in the lighting settings, but to no avail. Or is this maybe a terrain setting I have to adjust?

 

Hi,
okay. Though I`m not sure about the 'texture resolution overlay debug view'. As I understand this is related to the post processing stack. I disabled my post progressing volumes and the squared sections remain:

 

Any ideas?

 

This is a compression issue, I have the same problem.

If you turn off "compress lightmaps" it should be much less blocky.
There's something weird with the compressor on lightmaps that makes it really blocky.

I would love a solution that compresses the lightmaps without making it so blocky...

 

They are all baked lights

 

Hey @sameng

I just tried that. And besides the lightmap size (0.8MB compressed, 4.7MB without compression), there is no difference in the results for my case The square remains.

 

I just had the idea of using a plane which i placed 0.1 units above my terrain and marked as static. And the result speaks for itself:

Terrain with sand layer:



Plane with default material:


Plane with sand material:


Seeing that it is working fine with a plane, I assume it must be somehow related to my terrain settings

 

@ADufay I experimented a little with the lightmap settings of the terrain and the baked lightmap looks much better now:


However, switching the view back to "shaded" still shows some smaller square effect:


my current terrain lightmapping settings:

Scale in Lightmap: 0.25 (the max value before the atlas warning appears)
Lightmap Parameters: scene default parameters
Info text is saying 'Terrain is chunked up into 64 instances for baking'

Is there a another terrain configuration parameter to further optimize this?
Please be aware that the current results are already sufficient for my requirements

Btw. increasing the values from the lighting tab (lightmap resolution to 40 texels and lightmap size to 1024) did not have any noticeable impact.

Thank you so far for your help!

 

Hi @DavidLlewelyn

I want to cover a wide range of mobile devices, also older models. That`s why I decided to go with forward rendering.

Not sure about the performance impact when using realtime lights, but I read the docs and decided to go with baked lights straight away. Going mixed mode and also using realtime lights requires more testing on different mobile devices from my side tbh. But using it for few objects only (like the truck lights) should be a good compromise. So I will definitely try that.

Regarding the bloom effect: Not sure if I understood your point correctly. Yes, I know that this also increases the square effect a little.
But concerning the washed out look: That is exactly what I needed for empathizing my nighttime atmosphere. I think it fits into the general style I am trying to archive.

 

Thank you very much for the tips. Using multiple connected terrains seems the way to go. Also good explanation of the bloom effect. I played a lot with the post processing effects until I found a setting which fits into my idea of how the game should look, in addition to the shaders and geometry I used.
So my approach on that was rather experimental driven instead of knowing which knobs to turn in advance.

Talking about fog, do you mean the post processing fog effect? Because that only seems to be available for deferred rendering