Question Mixing direct lighting and GI

Hi all,
Why when I bake my direct light the physically based sky gets black?
Instead, if I use mixed light I only can see the effect of direct light. I have to override the indirect multiplier value a lot to see the effect of GI mixed with the direct light but then part of the scene becomes overexposed...

Thank you for your help.

 

Hi, thank you for your reply. This is my setup

 

The black sky was probably due to some problems with the volume profile in the lighting. I have assigned a new volume, identical for the visual and lighting environment and it seems to work.

I still get direct light and GI as separate elements. I can only see the effect of direct light. If I override the indirect in my volume giving a value at least of 50 my indirect light comes out. But the white areas get light washed and I loose part of the shadows. The exposure override doesn't affect this issue, so is useless.

 

Do you mean the indirect multiplier? That is equal to 1

yes, it doesn't get better

No, unfortunately. I am using HDRP in the 2020.2.3f1 version, but got the same issue with any other previous version. My model is a .max. Could it be something in the materials?

 

Could be the scale of the model? I see in the inspector that the max units are transformed in unity units by a factor of 100?? 1m file =100m unity.

 

Ok, it is strange because in the inspector of my max file in unity there is a scale factor (equal to one), and then the convert units option with a check box for 1m file =100m unity. This last doesn't seem to scale the model physically (as the scale factor I was mentioning would do I assume)...I am a bit confused...
Maybe I should export the model as fbx from 3d Studio as you suggest.

 

My model in 3d studio is in meter (1 unit=1 meter). I have kept scale=1 and unchecked 1m file=100m unity. The model doesn't change. I think this option is not important if your model in max is 1 unit = 1 meter...

I have tried importing two boxes of 1 m each from 3D studio. I have unchecked the units converter for just one of the two. They are pretty the same and equal to a unity box of 1m...

I have read somewhere that by default 3d studio works with centimeter and unity with meter so 1 cm (max) = 100 cm, that is 1m (unity), if so why do we also have a scale factor=1 option...

 

The thing is that my max model is correctly imported, in the right scale. The unit converter options affects the imported model, I assume, only if your max file is in generic units (with 1 unit equal to x meter/centimeter/...)

I have tried exporting my model as FBX file and got the same result. I need to override the indirect multiplier to see the baked light.

Maybe the problem is elsewhere...

 

I am using a physically based sky, maybe I should play with miscellaneous options? Would this be considered normal?

 

As I said, I can only see the effect of direct light (the sun in my case). If I turn off the light, than the GI appears. There is no way of having them mixed unless one overrides the indirect diffuse light multiplier.

 

Importing the model as obj and playing with the metallic (0.13) and smoothness (0) options of the material, the Gi comes out. Keeping the metallic low makes the textures look like if they are covered in dust, but at least you can see the lighmaps. The more metallic the less the lightmaps show.
A combination of 0.5 metallic, very low smoothness and a little override (10) of the indirect multiplier in the volume, is making the GI evident enough, but is this the 'right' way of handling it?

 

Mmm actually no, no reflection probes in my scene.
I have exteriors (a courtyard) and interiors.
I will try adding the probe as you suggest. Thank you!

 

Ok, it seems to work. I have placed many probes and I see that between one and the other there are some overlapping areas that not render perfectly (still getting a sort of dusty effect), but I am new to reflection probes...
So I have placed just a big one including all the model, now it renders good but maybe this is not the correct use of the probes? One should place a probe per room/area?