I have an OBJ, with UV Mapping that I import, and all is fine.  I can see all the textures, etc.  I seem to be able to load Light presets from my library without affecting the OBJ preview...but the moment I Delete a light (any light), the entire OBJ goes black in preview?  (This is P9 on Win7 64 bit)

Render is still fine, but its a big OBJ, and I cant really see it to get the pose, and the rest of the scene right?

Anyone run into this or have any ideas?  Only thing I could find on a search was to look for the Normals Forward on the materials, but those are all unchecked.

All materials basically just have a single image map node plugged into Diffuse and Specular, with close to white, and value of 1

It might be that the normals are flipped. There is an option in the OBJ importer to adjust them, have you tried it?

There is a flip normals option...but I tried it.  No difference.

This time, I just brought it in, it is seen in preview, start a render, cancel render, and back to preview, and it is black.

ARGH!  Happy to provide a link, if someone wants to give it a whirl...in P2012 or P9 to see if they get same?

ugh...tried every setting I could, changed images to JPG's, etc.  Renders fine, preview is black.  Only idea now is there is a bug.  Off to tech support I go!  Wish me luck! :tongue1:

**
**Whats odd is that if I change the image on the image node, it shows up again, until I render then its gone again.

Have you checked the direction of the normals for the obj? Youc an do that in meshlab or blender.

I did not check em, but tech support had me try SreeD Preview, and that works fine.  It only goes black in OpenGL preview, and its only this OBJ (I exported and re-imported Andy and he was fine).  So something in the OBJ kills it in OpenGL preview.

I will open up the OBJ in Blender and take a look.

(I did not even know there was a SreeD preview?!?)

Well, you don't want to really use the SreeD preview, you loose all the benefits of the hardware acceleration that is in your video card. The fact the the OpenGL preview is more "picky" than SreeD is perfectly OK. Most likely your vertex normals are inconsistent, with some oriented in one way and others oriented the other way. That needs to be fixed. Switching to SreeD is a bit like cutting the wire that goes to the light bulb, when a red light goes off on your dashboard :)

Cheers.

Yea, the normals are all inconsistent.  I opened in Blender, showed Normals, then recalculated outside, and a bunch of 'em changed, and a bunch stayed the same.

Do you know if there is a recalculate normals for all parts of an OBJ, after import into Blender?   ...or do I need to select each one at a time and recalculate.

Quote - Yea, the normals are all inconsistent.  I opened in Blender, showed Normals, then recalculated outside, and a bunch of 'em changed, and a bunch stayed the same.

Do you know if there is a recalculate normals for all parts of an OBJ, after import into Blender?   ...or do I need to select each one at a time and recalculate.

Usually I press tab to go in edit mode, press A to select all parts of the mesh and then recalculate the normals. If the OBJ has several group then you need to repeat the process for each group.

This operation should have been done by the original modeler.

Cheers.

try putting a figure in the scene  .... THAT was a old remedy to this problem many poser version ago ..

try it ..

Ok, so in Blender, I recalculated the normals for all to be outside...then i saved the OBJ back out of Blender...back into Poser, and same problem.  UGH!

I have been doing this with Andy in the scene, but had victoria previously.  That does not seem to affect it.  They look fine, but the OBJ goes all black.

IN what tool did you make the OBJ ?

maybe that might be the problem ... 

Its an OBJ from XNALara...I did not make the OBJ.

Tried a few other Blender export settings...nothing.  There is something more advanced up with this OBJ than I am capable of...that being said, the SreeD preview ain't that bad.  Using Light emitters, and IDL, the preview is never a good reflection of the render anyway.

Thanks for the assist.

Is it double thickness or two sided?

Poser doesn't like that ;).

Laurie

I suggest you load a Poser figure to the scene and look at it again. There was a bug (or something) that very small objects wound up black. Adding anothe prop or figure seemed to get Poser to handle it differently and the lighting and shadows worked again.

I did try that, Ill try it again, though...this is actually a very large object scaled down to 37 percent to make it lifelike size in Poser.

3doutlaw, I just found out something about this. While I was importing an OBJ it came too all black. I then went to the material editor and remove the diffuse node for the material and the object showed as expected.

I know, trivial but it can be the solution.

Cheers.

OK, thanks, I will give it a try

It is strange that removing the diffuse node remedies the problem.  Check the chip color on the node itself, it might be black when it should be white with an image map attached.

Yes, of course. I jut removed the node to be quick :)