TwoSided material

Discussion related to the LuxCore functionality, implementations and API.
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Dade
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Re: TwoSided material

Post by Dade » Wed Sep 23, 2020 3:10 pm

Dade wrote:
Sun Sep 20, 2020 9:00 pm
CEROE wrote:
Sun Sep 20, 2020 5:38 pm
I can probably extend the concept and have a "flip option" for all asymmetric Lux materials.
Is there anything ready to test for this?
I haven't yet written the code.
I'm working on this.
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Dade
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Re: TwoSided material

Post by Dade » Mon Sep 28, 2020 11:50 am

CEROE wrote:
Thu Sep 17, 2020 2:19 am
There are a couple issues:

The backside seems to be extra glossy. I have tried the same settings for each, and the backside is different.
I'm trying to reproduce your problem but I'm unable at the moment: can you post a test scene ?
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Re: TwoSided material

Post by CEROE » Mon Sep 28, 2020 5:41 pm

Here are the two issues:

1) The backside material is glossier than the frontside.
2) The sides switch when mirroring the objects.
Attachments
Two-Sided_Issues-NoImages.blend
(1.5 MiB) Downloaded 13 times

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Re: TwoSided material

Post by CEROE » Mon Sep 28, 2020 5:52 pm

What is the maximum file size that we can upload here? Not even a 9.43MB file will upload?

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Dade
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Re: TwoSided material

Post by Dade » Mon Sep 28, 2020 7:02 pm

CEROE wrote:
Mon Sep 28, 2020 5:52 pm
What is the maximum file size that we can upload here? Not even a 9.43MB file will upload?
It should be 10MB, the problem may be in an not recognized file extension, you can try to .zip it.
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Re: TwoSided material

Post by CEROE » Mon Sep 28, 2020 7:18 pm

Zipped file is 8.21 MB. It won't upload either.

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Dade
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Re: TwoSided material

Post by Dade » Mon Sep 28, 2020 9:36 pm

CEROE wrote:
Mon Sep 28, 2020 7:18 pm
Zipped file is 8.21 MB. It won't upload either.
As far as I remember it should 10MB but it may be only for images. You can use Google Drive, DropBox, etc. and post here a link.
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Re: TwoSided material

Post by CEROE » Mon Sep 28, 2020 10:21 pm

The "Two-Sided_Issues-NoImages.blend" file demonstrates the two issues. Can you download and see if it is benefitial to you?

The full file I attempted to upload has the image textures packed in the blend file.

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Re: TwoSided material

Post by Dade » Tue Sep 29, 2020 9:54 am

CEROE wrote:
Mon Sep 28, 2020 10:21 pm
The "Two-Sided_Issues-NoImages.blend" file demonstrates the two issues. Can you download and see if it is benefitial to you?
Actually, it is the definition of your material to be asymmetric, you need to click on "Double Sided" and to use the same parameters for front and back face ("BF"):

bf.jpg

Once you have done that, you should get the sane results.

@B.Y.O.B: BlendLuxCore seems to leave the default values for the back face if the "Double Sided" option is not used. This is probably a bug and I assume people expect to have the same parameters both for front and back face.
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Re: TwoSided material

Post by B.Y.O.B. » Tue Sep 29, 2020 2:57 pm

Dade wrote:
Tue Sep 29, 2020 9:54 am
@B.Y.O.B: BlendLuxCore seems to leave the default values for the back face if the "Double Sided" option is not used. This is probably a bug and I assume people expect to have the same parameters both for front and back face.
Fixed. I had a wrong assumption about how the properties of this material work.

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