LuxCoreRender Forums

Posted: **Sat Jul 04, 2020 5:42 am**

Hi there,

I am trying to understand why in Blender, the viewport render gets refreshed when changing the Color Management Exposure or curves.

I thought it was "just the way it works" as it always happened in my previous scenes, until I noticed that it wasn't doing it in a new scene. Is there a special thing in the scene that could do that? This would be really helpful for my add-on if it wasn't refreshing the viewport.

Thanks,
fabien

Posted: **Sat Jul 04, 2020 4:45 pm**

It looks like it works fine when using the GPU.

EDIT: But it's not the only reason, I have old scenes that would refresh the render for all changes even GPU. Copying content to a new scene seems to work. I wonder what saved setting might cause that.

Posted: **Sun Jul 05, 2020 11:37 am**

You could check if it also happens with Cycles.
The correct behaviour should be to not refresh the viewport render (i.e. do a LuxCore update).

You can also look into the console, BlendLuxCore will print the cause of the refresh there.

Posted: **Sun Jul 05, 2020 7:08 pm**

It only happens with LuxCore, changing the exposure thinks the World Light has changed:

Code: Select all

[Exporter] Update because of: OBJECT | REQUIRES_SCENE_EDIT | WORLD
[SDL][444.500] Light definition: 2663798522552
[SDL][444.500] Light re-definition: __WORLD_BACKGROUND_LIGHT__

But it doesn't do it in new scenes. Still investigating...

Posted: **Sun Jul 05, 2020 7:54 pm**

The world datablock is flagged as updated all the time by the Blender depsgraph. No idea what's up with that.

LuxCoreRender Forums

Viewport render update when changing Exposure

Viewport render update when changing Exposure

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Re: Viewport render update when changing Exposure