LuxCoreRender Forums

Yes, it works quite well. I already used this procedure in the Unreal Engine in the past. I think I will create a convenience node that encapsulates this functionality, because the node tree gets quite large when you have to duplicate the setup for each texture type (diffuse, normal, specular, rough...

Finally had time to try it in a scene I'm working on.

However I could also implement this differently: If "use IOR" is enabled, I could hide the "Specular Color" socket and export specular color as (1, 1, 1) so the user can not make a mistake here. It would take away the user's choice (to do something wrong). I could also make a sp...

Then it should be clamped in LuxCore (after index->GetFloatValue(hitPoint)).
I can limit the scalar default value of a socket, but I can't limit every pixel in a texture in the exporter.

By the way, a more important issue about the glossy material in my opinion is the following: Even if the specular color is set to pure black, glossy shows specular reflections at grazing angles. This is especially a problem if you try to use specularity maps - they can never switch off the reflectio...

Ok I implemented IOR for glossy (glossy coating still to do). I wrote the attached tooltip. Hope the explanation is correct. However I could also implement this differently: If "use IOR" is enabled, I could hide the "Specular Color" socket and export specular color as (1, 1, 1) s...

1. Glossy Material is still missing "Use IOR" option ;) By the way I'm not sure why people keep nagging me about this feature and seem to be super keen on it. If I look at the code, it just seems to be a scale factor for the specular color: https://github.com/LuxCoreRender/LuxCore/blob/ma...

How to contribute as a developer If you think that LuxCore or the Blender addon needs an improvement, and you have implemented it yourself, you can use the following procedure to send your changes to us. If you want to participate in development and you need inspiration, you can look at the issues ...

2. Tried using IOR node for Mixing Materials (Matte + Glossy Coat, IOR pluged in 'Mix Factor') but that doesn't work. 'Material 1' gets occluded (black). IOR output is a floating point number (e.g. 1.5). Mix factor is a floating point number that is clamped to 0..1 range (0: only show material 1, 1...

Thanks! I added support for it to the addon.