I am getting "hung" on the pre-render process. This can take an hour or more (I wouldn't how long as I generally kill the process by then). The results of the renders are wildly out of control with what lights make sense to light a scene. Not every scene wants to be lit by bright sunlight. I find it can't handle more than a single light source without wildly varying results.
Mmmmm.
No
What preset did you use, if you did? An hour on what kind of scene/resolution/settings? And what kind of lights did you add? Did you try lumi-polys? Did you use inverse distance^2 on the lights? How different did it look compared to an fprime render in terms of light? Can you show us examples of said wild variation in results?
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(Why did this need a new thread?)
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(Why did this need a new thread?)
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filmdesigner
- Posts: 20
- Joined: Fri Mar 16, 2007 5:35 am
You guys are right. I had a bad week.
I will post a sample of the render I am getting and stats today.
I really am looking forward to getting Kray to do what I want it to do, considering i have a number of animations to create this week and I understand Kray is a super fast animator.
Cheers.
I really am looking forward to getting Kray to do what I want it to do, considering i have a number of animations to create this week and I understand Kray is a super fast animator.
Cheers.
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filmdesigner
- Posts: 20
- Joined: Fri Mar 16, 2007 5:35 am
Sample from Lightwave/Fprime
This render is what I want Kray to produce. It is 2500 x 1250 pixels rendered with FPrime Radiosity set at 200% with 2 bounces. The lights are as follows:
1 x Main exterior Spot
1 x Exterior Fill Spotlight
7 x Spots ov er kitchen
5 x Points over kitchen
1 x point in the "Gerkin Light"
1 x point in the standing light
2 x points in the pointy ceiling light over dining table
1 x Area light behind camera to kick the FG.
When I set Kray to render, it takes hours (lots) to preprocess the image and when I reduce the settings to get something, the results are grey and horrible, like old porridge. I tried reducing the number of lights and got nasty shadows everywhere. I would have posted these images but they were so bad I trashed them before I thought to post them.
I asked "How does Kray work" in another post. If Kray works best with single light sources it is useless for me to push it into this area. You might agree I will need to change my requirements and how I use it.
Any ideas?
MAC Dual 2.7 G5 with 5 Gigg Ram and a grunty video card.
1 x Main exterior Spot
1 x Exterior Fill Spotlight
7 x Spots ov er kitchen
5 x Points over kitchen
1 x point in the "Gerkin Light"
1 x point in the standing light
2 x points in the pointy ceiling light over dining table
1 x Area light behind camera to kick the FG.
When I set Kray to render, it takes hours (lots) to preprocess the image and when I reduce the settings to get something, the results are grey and horrible, like old porridge. I tried reducing the number of lights and got nasty shadows everywhere. I would have posted these images but they were so bad I trashed them before I thought to post them.
I asked "How does Kray work" in another post. If Kray works best with single light sources it is useless for me to push it into this area. You might agree I will need to change my requirements and how I use it.
Any ideas?
MAC Dual 2.7 G5 with 5 Gigg Ram and a grunty video card.
- Attachments
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- Apartment Final.jpg (110.01 KiB) Viewed 5545 times
First of all you will have to change the way you light your scenes. Since Kray can accurately render infinite number of global illumination bounces you only need those lights that would appear in reality.
Second thing is that you will probably have to adjust your surfaces to work with accurate global illumination lighting. This is very important aspect of scene since surface properties determine how light will bounce off the surfaces. You can read more about this in the manual. It is best to use override surface option to get good lighting situation on pure gray surfaces and then add materials. This way you won't be confused about what surfaces are causing weird light behaviour.
Kray also supports geometry light sources. So instead of adding point lights you can use polygons with high luminosity to light your scene.
In any case remember that Kray is very powerfull global illumination renderer that requires a different apporach to lighting and surfacing than other raytrace only renderers.
Second thing is that you will probably have to adjust your surfaces to work with accurate global illumination lighting. This is very important aspect of scene since surface properties determine how light will bounce off the surfaces. You can read more about this in the manual. It is best to use override surface option to get good lighting situation on pure gray surfaces and then add materials. This way you won't be confused about what surfaces are causing weird light behaviour.
Kray also supports geometry light sources. So instead of adding point lights you can use polygons with high luminosity to light your scene.
In any case remember that Kray is very powerfull global illumination renderer that requires a different apporach to lighting and surfacing than other raytrace only renderers.
- Jure