Interior rendering lighting changes based on world position

[dtrebilco]

Describe the bug
It seems that interior areas are well lit and do not match the reference at all when at different world positions.

I am attempting to render a house and at the origin it renders correctly (according to the reference - light not coming through windows is a different issue)

Walking down the house (scale is 1 unit = 1m in case that makes a difference) there is a transition area where light is coming from "somewhere"

Here is the reference of that area

Until the front rooms are fully lit

Reference:

If I move the house in the scene file (say by 10m), the lit areas move around the house

I am guessing that perhaps there is some setting where interior lighting is only performed correctly at some small distance from the origin? Or perhaps there is some world light that starts at this position?

Let me know if it would be helpful to have the sample data - I will see if I can get permission to supply a cut down version.

Device:

• OS: Windows 10
• Version: Git sysnch of 10 January 2022

[h3r2tic]

Cool scene!

This one is the fixed-size GI volume scale that README.md mentions:

• The voxel GI uses a fixed-size volume around the origin by default.
  • Use --gi-volume-scale to change its extent in the view app
  • It can be configured to use camera-centered cascades at an extra performance cost (see CASCADE_COUNT and SCROLL_CASCADES in csgi.rs)

Try with, say, --gi-volume-scale 2, then see if it's still there, and if not, go higher.

[dtrebilco]

Thanks that works fine - sorry I missed that in the readme.

[h3r2tic]

No worries! Glad to hear the parameter worked out fine 😄