[Radiance-general] warning - outgoing BSDF direction 142 collects 107.4% of light

[Greg Ward]

Hi David,

If I understand your e-mail correctly, you are seeing this error using the NEW material, not the OLD one.

I cannot reproduce your error.  I assume from your earlier e-mails that you are using the latest HEAD of Radiance.  You should make sure that everything is up-to-date and try it again.  In particular, we fixed some problems last December in the normalization of results.  The dctimestep program has also been improved and corrected.

-Greg

> From: David Appelfeld <d.appelfeld at gmail.com>
> Date: May 23, 2011 7:51:13 AM PDT
> 
> Dear Radiance users,
> I am getting warning message 
> 
> warning - outgoing BSDF direction 142 collects 107.4% of light
> 
> when multiplying matrixes by dctimestep. I generated BSDF matrix by genBSDF.
> I guess that I can still use it but is this message saying that it could be wrong or is it more just like a statement that there is literally more light coming to direction 142. 
> I generated more of BSDF matrexis and I kept same geometry and changed only one material which has higher reflectance. I guess that it can be reason but I would like to be sure that the BSDF matrix is still reliable. 
> 
> Here is the material description for OLD and NEW (with warning message when used)
> NEW material is generated by "optics2rad"
> OLD material is generated by script "glaze" and "optics2glazedb"
> 
> Thank you very much I very appreciate your help
> David
> 
> 
> void BRTDfunc OLD
> 10
>     sr_frit_r sr_frit_g sr_frit_b
>     st_frit_r st_frit_g st_frit_b
>     0 0 0
>     glaze1.cal
> 0
> 11
> 0.0564
> 0.0492
> 0.051
> 0.126
> 0.126
> 0.126
> 0.054
> 0.054
> 0.054
>     1    .6
> 
> 
> void BRTDfunc NEW
> 10
>     rR_clear rG_clear rB_clear
>     0.678*tR_clear   0.655*tG_clear   0.576*tB_clear
>      0 0 0
>      window.cal
> 0
> 15 0 0 0 0 0 0 0 0 0
>     0.267       0.321    0.395
>     0.24        0.306    0.368
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