Max Brightness Value

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Racleborg
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Max Brightness Value

Post by Racleborg » Thu Nov 15, 2018 10:58 am

Hi

Would you tell me what this value means, please. (image attached)

Thank you
Attachments
Max Bright Val.JPG

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B.Y.O.B.
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Re: Max Brightness Value

Post by B.Y.O.B. » Thu Nov 15, 2018 11:13 am

"nan" means "not a number".
So something went very wrong.
Can you upload a scene that can be used to reproduce the problem?
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Racleborg
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Re: Max Brightness Value

Post by Racleborg » Thu Nov 15, 2018 11:29 am

Hi

The scene is too big to upload on our 2MB broadband .(400MB)

I will try and recreate in a smaller scene or strip out as much as possible .

Might not be able to do this for a few hours, sorry.


Thanks

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Re: Max Brightness Value

Post by B.Y.O.B. » Thu Nov 15, 2018 11:45 am

Maybe it is enough to remove the most high poly objects and all image textures.
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Racleborg
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Re: Max Brightness Value

Post by Racleborg » Thu Nov 15, 2018 11:53 am

Ah!

I have a large amount of small lights in the scene, which has been working fine. But I turned of the only non-mesh light (the sun) and that is what caused the problem.

Fixed.

Thank you

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B.Y.O.B.
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Re: Max Brightness Value

Post by B.Y.O.B. » Thu Nov 15, 2018 12:12 pm

It would still be good to know if this NaN value was to be expected (e.g. because the brightness of the sun was turned up and it exceeded the maximum possible value of the float data type) or if was a bug in LuxCore and could have been avoided.
But I guess it was the former. How was the sun configured? Did you turn up the gain?
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Racleborg
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Re: Max Brightness Value

Post by Racleborg » Thu Nov 15, 2018 12:32 pm

I'm trying to reproduce this issue, but to no avail.

When the Sun was switched off, the 'nan' occurred. When I turned the Sun back on (value .0001 with Sky on and linked to it) I then got a recommended brightness of .1

Unfortunately, turning the Sun off again isn't producing the 'nan' value.

I've attached the Statistics with Sun Off which I hope is of some help.
Attachments
sun off.JPG

Racleborg
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Re: Max Brightness Value

Post by Racleborg » Thu Nov 15, 2018 12:42 pm

B.Y.O.B

I've PM'd you

Racleborg
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Re: Max Brightness Value

Post by Racleborg » Thu Nov 15, 2018 4:35 pm

What's the maximum file size to upload? I'm at 19.3 mb but it's still too large
Thanks

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Re: Max Brightness Value

Post by B.Y.O.B. » Thu Nov 15, 2018 5:26 pm

Racleborg wrote:
Thu Nov 15, 2018 4:35 pm
What's the maximum file size to upload?
10 MiB.
You could use an external hoster like dropbox, google drive, sendspace etc.
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