LuxCoreRender Forums

Hi Tao,
I downloaded blender and blendluxcore and i'm a noob, I noticed that on my laptop the export/compiling of a test scene is also time consuming, but the way LuxCore renders is simply stunning.

I have a question, what about light groups, in luxrender we could edit the different light groups by gain, color and power while rendering. Is this supported in maxtolux? I coundn't find it in blender but as I said i'm a total noob with blender.

patro wrote: ↑Mon Jan 11, 2021 4:55 pm Hi Tao,
I downloaded blender and blendluxcore and i'm a noob, I noticed that on my laptop the export/compiling of a test scene is also time consuming, but the way LuxCore renders is simply stunning.

I have a question, what about light groups, in luxrender we could edit the different light groups by gain, color and power while rendering. Is this supported in maxtolux? I coundn't find it in blender but as I said i'm a total noob with blender.

You can find it in blender just take your time or ask in forum.
In 3dsmax i will add the group light after adding face_ID because many 3dsmax Artist use polygon and face id for materials and then i'll do the light group.

patro wrote: ↑Mon Jan 11, 2021 4:55 pm I have a question, what about light groups, in luxrender we could edit the different light groups by gain, color and power while rendering. Is this supported in maxtolux? I coundn't find it in blender but as I said i'm a total noob with blender.

The lightgroup workflow in Blender was changed for v2.5, you can find a video about the new behaviour here: https://youtu.be/vqigKhwWxIs
They are now manipulated in the Blender compositor.

B.Y.O.B. wrote: ↑Wed Jan 13, 2021 11:10 am

patro wrote: ↑Mon Jan 11, 2021 4:55 pm I have a question, what about light groups, in luxrender we could edit the different light groups by gain, color and power while rendering. Is this supported in maxtolux? I coundn't find it in blender but as I said i'm a total noob with blender.

The lightgroup workflow in Blender was changed for v2.5, you can find a video about the new behaviour here: https://youtu.be/vqigKhwWxIs
They are now manipulated in the Blender compositor.

Nice, to be honest, I don't know how to implement this part because 3dsmax doesn't have a compositor. in new Arnold version they add a node base compositor but it works just with Arnold renderer.
I'm still thinking of how can I do that.

It is potible with VFB like in Corona renderer or V-ray

dolphinoff wrote: ↑Wed Jan 13, 2021 1:25 pm It is possible with VFB like in Corona renderer or V-ray

All of the renderers you named are like Arnold and they all implement their own VFB and compositor for this purpose.
I'll try my best to find a good solution for it and if it's not going to work I'll going to create Lux Visual frame buffer as well.

TAO wrote: ↑Wed Jan 13, 2021 11:18 am Nice, to be honest, I don't know how to implement this part because 3dsmax doesn't have a compositor.

Just for light group manipulation, you don't need a full compositor. The only operations you really need are multiply and linear interpolation (aka lerp).
The output of a light group in LuxCore is just a color image. Such an image can be multiplied with a constant color to give it a tint (e.g. yellow, blue, green etc.), or multiplied with shades of grey/white to darken or lighten the image.
Multiple light groups manipulated in this way can then be combined by linear interpolation to mix them together into a final result.

So if 3ds Max allows you to create a custom interface for this operation, it shouldn't be too hard to create your own "mini-compositor" that does just these mixing operations for light groups.

If you meake VFB, it will be unbelievable
Thanks for great work.

Moving MaxToLux installer to Wix to have a better user experience, look and also be opensource on this part of the project too.

TAO wrote: ↑Thu Jan 14, 2021 11:21 am Moving MaxToLux installer to Wix to have a better user experience, look and also be opensource on this part of the project too.

installer-Wix.jpg

It look refreshing and very nice. Will be even better with a more finished and polished background render (maybe your last livingroom render)