Lightmap results different in 2019.1

Hello!

We have just updated out project from 2018.3 to 2019.1.0b2 and are noticing differences in our bake results both in light maps and light probes.
Lights at and intensity of one and an indirect multiplyer of 1 appear to bake the exact same! Great!

When increasing the intensity above 1 in 2019.1 the lights brightness increases more than in 2018.3.

When increasing the Indirect multiplier above 1 the brightness increases more than in 2018.3 and also introduces blurry noise artefacts.

2018 produced lots of high frequency noise at this stage also but get blurred out easily because it was so high frequency, in 2019 the noise is so big that massive splotches are left behind and the end result looks worse.

For this test the scene and lightmap settings and the light were exactly the same!

 

2019 applies the filtering while baking while 2018 didn't (and just applied it at the send). Turn off filtering to make the results similar while baking).

 

Ok cool! That is interesting, do you know why the lights are way brighter? Did the ratio of all the numbers change, as values of 1 and below look the same but after that they diverge alot.

 

This is an extreme example but to get them to match:
light intensity is 1 on both lights
indirect multiplier is 50 in 2019
indirect multiplier is 5000 in 2018


And its the same story with the light intensity
just to be clear I dont have a problem if unity has changed the how the numbers work, Im just trying to confirm its not a bug, as if i go ahead and fix all my scenes, and then they change it back ill have to do all the work again.

Thanks

 

I don't actually know, maybe they changed the default settings for : https://docs.unity3d.com/ScriptReference/Rendering.GraphicsSettings-lightsUseLinearIntensity.html ?

 

I have confirmed in our project at least, that is off in both instances, weird.

 

Both of @AcidArrow's suggestions would be the first things I'd mention as well.

The other one would be to check if the lightmap encoding is set to the same setting: https://docs.unity3d.com/Manual/Lightmaps-TechnicalInformation.html

If it is the same, then we'd appreciate it if you could send your 2018.3 project over in a bug report. There's a lot of options at play, so that will be the fastest way for us to check what's up.