Filesaver hdr export half float?

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Fox
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Joined: Sat Mar 31, 2018 11:17 am

Re: Filesaver hdr export half float?

Post by Fox » Sat Dec 29, 2018 5:38 pm

I see, thank you B.Y.O.B.
I had it running for a 1 hour with classic and there is no black center visible.
Maybe it's something with curved surfaces and too huge VM start radius.
Shortest edge length in lens element is 0.000005476, i set the start radius to 0.000005476 and see what happens, classic already works so why not for the shake of curiosity.

Fox
Posts: 137
Joined: Sat Mar 31, 2018 11:17 am

Re: Filesaver hdr export half float?

Post by Fox » Sun Dec 30, 2018 4:24 am

Does the 32 bit float limit matter in luxcore in terms of what's on hdr map times gain?
I will check this next, gain down and use instead camera shutter speed compensation.

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Dade
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Re: Filesaver hdr export half float?

Post by Dade » Sun Dec 30, 2018 10:59 am

Fox wrote:
Sun Dec 30, 2018 4:24 am
Does the 32 bit float limit matter in luxcore in terms of what's on hdr map times gain?
32bit limits are a lot largest than 16bit but are still there so it is still possible to go out of bounds.
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Fox
Posts: 137
Joined: Sat Mar 31, 2018 11:17 am

Re: Filesaver hdr export half float?

Post by Fox » Sun Dec 30, 2018 3:22 pm

Limiting the maximum float to 32bit range didn't work out.
Maybe there are some nasty small floats, image editor can only show me 3 digits after comma 0.000, but 16bit limit is 0.000061.
I will add 0.0001 to hdr map.

edit
The hdr map that was edited to 16bit float range was exported to exr unchanged by Blender 2.79b and filesaver engine. Sun keeps it's dynamic range / values.

Fox
Posts: 137
Joined: Sat Mar 31, 2018 11:17 am

Re: Filesaver hdr export half float?

Post by Fox » Sun Feb 24, 2019 2:48 am

I prepared small scene showing the problem.
Both sun lamp and hemi have sort of clamping problem in reflection, on mirror mat and on glass mat.
Problem is similar with flat or smooth shading over 24 hour render in LuxCore ui 2.1 and last 2.2.
https://drive.google.com/file/d/1q3Khqg ... sp=sharing

Glass BiDirCPU
Glass BiDirCPU.jpg
Glass BiDirVM
Glass BiDirVM.jpg
Mirror BiDirCPU
Mirror BiDirCPU.jpg
Mirror BiDirVM
Mirror BiDirVM.jpg

Fox
Posts: 137
Joined: Sat Mar 31, 2018 11:17 am

Re: Filesaver hdr export half float?

Post by Fox » Mon Mar 04, 2019 8:16 pm

Mirror reflection set to 0.000001
HDR map mixed in the range of 0.001 to 0.95 and saved as 32bit IEEE full float.
BiDirVM black sun still not gone.

Mesh emitter, DLS on or off no black sun with BiDirVM :roll:
(infinitelight :twisted: )

Here with infinitelight, visibility map enabled and map gamma set to 2.2
You can see polygon faces. Glass material dispersion enabled and the dispersion pixels have normal high RGB values in 3+ digits,
but reflection of sun is like below 1 in brightness with hemi gamma of 1, but lightens up with gamma 2.2 :roll:
Lamp_Hemi Gamma 2.2 visibility map.jpg

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Dade
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Re: Filesaver hdr export half float?

Post by Dade » Mon Mar 04, 2019 10:49 pm

Does it happen with plain BiDir too ? BiDirVM is not supported.
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Fox
Posts: 137
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Re: Filesaver hdr export half float?

Post by Fox » Mon Mar 04, 2019 11:07 pm

VM is the only problematic.

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