render problem

[Noble_forum]

Hello everyone,
New here and my 1st post.
I have attached an image which rendered with some funny stuff. The arrow in the image points to where some pattern appears that should not be there. Does anyone have a clue why this is happening?

I'm using Kray 1.6 Demo. I briefly went through the tutorials but still don't have a grasp of it all. Anyway, could someone help me out.

The scene has 4 area lights and 2 point lights and 1 spot light. Yea, Yea it's probably an overkill but I couldn't get the right lighting without this setup.
Does anyone want to share a good light rig?
Thank in advance.

-Noble

[silverlw]

It's hard to judge from the images what it can be. Maybe it's smothing errors depending on to high smooth angles? Kray can be a bit picky about that so try lower from 89,9 to 30. It's hard to judge from the images what it can be but also look at your arealights settings raise arealight quality from min0 to min1 or 2. Can you share the scene/object so we can find out?

[jure]

Hmm it looks like a geometry or smoothing problem. Have you checked for 2 point polys?
If you post your scene I could quickly locate your problem...

About light rig: it depends on what effect you're trying to achive. Setting up for KRay is easier than LW because you can use GI to light your scene (no need for bunch of lights).

[Noble_forum]

I'll post the scene file soon.

I tried setting the smoothing angle to 30 and it doesn't fix the error.

Wait a minute......., wouldn't a smoothing angle problem also show up also using lw's renderer???
Thanks again.

[Noble_forum]

I'm not able to post the scene right now. The scene is 4 mb with all the image maps and the max it 256 kb for posting. I'll have to remove the image from the scene on Monday. I'll post it then.

[Noble_forum]

It seems to be a bump map that's causing the error. I removed the map and Kray renders it just fine.

I would like to upload the scene file with the map but it will excede the max limit of 256 KB.
Can an administrator allow me just this time to upload the 4.3 MB scene so Silverlw can take a look at it??
Once the reason for the render error is determined, it can be deleted.
Thank you.

-Noble

[silverlw]

Mail me at crapmess@bredband.net and thanx for taking your time!

[silverlw]

Hi Noble!
I have looked at your scene and found out that almost everything is "wrong" atleast for Kray!
The 20x30 meter large room with a tiny cup in the middle will cause Kray to try shoot photons everywhere in the room and to fill that up and at the same time maintain some detail at your cup, you have to shoot alot!
I totally removed your backdrop/room and replaced it with a basic bluish colour,turned on lightmapping (to get photons from the backdrop) and rendered the scene at a fraction of the initial time.

Another thing i noticed was that the bumpmap was applied as UVmap in surface editor but when i looked at the object in modeller no uvmap was found. I mapped the bumpmap as cylindrical instead just to test and it worked as it should.

Why use so many arealights when you can use imageworld and an hdri,lightmapping and light the scene with radiosity? Is your goal to only use raytrace? Try radiosity since it renders at about the same time.

I hope this will help you further to understand Kray and dont hesitate to ask further questions.

[Noble_forum]

Why use so many arealights when you can use imageworld and an hdri,lightmapping and light the scene with radiosity? Is your goal to only use raytrace? Try radiosity since it renders at about the same time.

I don't know what you mean by lightmapping. What is it and how do I implement it in my scene.
I'll give imageworld with a hdri a try and post the image here.

I have been trying to get a bright image like this:
http://www.maxwellrender.com/img/galler ... orenzo.jpg
(NOTE: Once you click on the link above, you have to click on the new window that opens to resize the image in the browser).

Should I use an area light or just use lum poly's??
What kray settings would you recommend for my scene?

Thanks in advance for all your help.