Blank Render

gregsandor · June 30, 2008, 09:24:01 AM

With the sun at a very low angle, GI on, my rendered scene is blank. With GI off it works.

DeathTwister · June 30, 2008, 09:27:15 AM

Try the new build that just came out today?

gregsandor · June 30, 2008, 09:30:21 AM

Yes. And I'm getting counter errors in my grass population...

The scene rendered fine without GI, then I set it up at quality 1, GI, ran it, went to breakfast. When I returned it was finished, after 43 minutes rendering, and utterly black.

buzzzzz1 · June 30, 2008, 09:42:06 AM

Quote from: gregsandor on June 30, 2008, 09:30:21 AM
Yes. And I'm getting counter errors in my grass population...

The scene rendered fine without GI, then I set it up at quality 1, GI, ran it, went to breakfast. When I returned it was finished, after 43 minutes rendering, and utterly black.

Well that sucks! Didn't take you very long to find that one. Perhaps you should be a Alpha Tester?
I think I will wait and see what others find before I install the latest release.
Thanks for reporting it.

Matt · June 30, 2008, 10:59:56 AM

Hi Greg,

Can you send me your project? I'll do my best to diagnose the problem. Did you repeat the no-GI test with detail at 1?

Matt

gregsandor · June 30, 2008, 11:05:51 AM

The no-GI test was at .5. I'd built that file in the previous version; Im recreating the scene now from scratch in the latest version. Let me see if this works before I package the old one for you; maybe there was a conflict in settings or something; there are a lot of heavy files.

Matt · June 30, 2008, 11:19:48 AM

OK, I'll wait for those, thanks. I asked because was trying to confirm if it really works when GI is off.

I would still like to see the old files even if you get it to work by recreating from scratch in TP4. I don't think a mismatch of settings between TP3 and TP4 is likely to be the problem, but whether it is or not there's a bug that needs to be fixed. I know there are some problems which I am trying to debug using the "counter error" which you saw, so your files may be helpful.

Matt

gregsandor · June 30, 2008, 11:32:58 AM

Ill send you the tgd now so you can look at it; there are a lot opf associated textures and models, so those will have to be collected.

gregsandor · June 30, 2008, 12:05:22 PM

Matt did you get the file?

I'm rendering now in the recreated file and it seems to be working okay so far; I'll know in a few minutes.

As a quick test try rendering a scene with settings at default, but drop the sun to -2 degrees altitude.

gregsandor · June 30, 2008, 12:56:09 PM

Here are results of some tests.

First image: No Raytraced shadows No Enviro Light
Second image: only change is enabling Enviro Light node

I have no idea why the model is half-black either...

JimB · June 30, 2008, 01:47:06 PM

Quote from: gregsandor on June 30, 2008, 12:56:09 PM
I have no idea why the model is half-black either...

That's possibly inverted faces (normals pointing inwards). Might also be double-sided polys, perhaps.

gregsandor · June 30, 2008, 02:33:25 PM

The normals are fine. Its something else, but I don't know what.

Here's a render, same settings, no gi, shadows on, over 1 hour when I stopped it:

gregsandor · June 30, 2008, 04:02:09 PM

This object rendering bug is killing me. (Well my project anyway.)

Oshyan · June 30, 2008, 04:08:34 PM

Greg, are you referring to the black areas on your model, or the GI darkness issue? Do the black areas occur for you on other models?

- Oshyan

PG · June 30, 2008, 04:20:24 PM

I'm getting it in my wheat field render. the GI dots run fine but after that it just renders blackness...ment.
Weird thing is, if I did it on the quick render node before I updated to the new version it worked fine. Now it won't work on either.
I haven't tried it without GI to be frank, I'll try it now...................Yeah it works fine without GI.