I have done some modelling of a Roman style kitchen and have rendered a load of frames using mantra at full PAL resolution. When i then view the animation, there are loads of black lines/squares going towrds some objects in the kitchen. These objects are not transparent, they are just pots on shelves, modelled by revolving a curve around the Y axis. THe shader on these pots is just the modified VEX Gallery Granite. I dont have a website or anything where i can show the video, but if you are willing to try to help me, then i could email you the video to show you what it is.

Any help would be greatlty appreciated, as time is not on my side!

Cheers,
Nick

I dont have a website or anything where i can show the video

you can always post the question over at odforce [odforce.net] and post a single image of the problem as opposed to whole video..

Without seeing any of the images, it sounds like a potential shadow-bias problem. Look in your shaders for a Ray Bias or Shadow Bias and increase the value slightly. Are you raytracing all your shadows or are you using Depth Maps?

I'm not using depth maps, I'm raytracing, so you're probably right….noone ever seems to respond when i post things on odforce - but they do on here.

I'll try what you suggested and see if that works…..thanks in advance, incase it does work!! :shock:

Actually, now that i'm writing on here, can i ask how people would do this - I am trying to light the room with some sunlight coming in through a wide door (almost the same width as the room), and some sunlight coming in throuhg a very small window on the opposite wall to the door. At the moment, i have a grid light acting as the sun, which shines in through the door casting shadows of the doorway and things in it's path. I also have another light acting as the sun casting shadows through the window. With these two lights alone, the areas of shadow in the room are pitch black, so i put another couple of lights in the room that are set quite dim to give a bit of light to the rest of the room. This seems to look, but it may be the reason for the black lines, having so many lights acting on the shapes.

I was going to use global illumnation, but it just takes too long to render (i don't have very long to do this). Is there a better way of faking global illumination without killing my rendering times, but also giving nice shadows? THe room is suppoed to be quite dull, as there are no electric lights in Roman times, but i still need to be able to see the areas in shadow.

I'm not using any shaders at the moment on my lights…is this advisable? If so, which ones, i dont really understand what they all do. :?

I think has more to do with timing and the question in particular than which forum you post to … deecue and jason reply regularly on both forums.

edward
I think has more to do with timing and the question in particular than which forum you post to … deecue and jason reply regularly on both forums.

fair enough, i'll try odforce when i get to my work in the morning.



PLEASE GO HERE : http://odforce.net/forum/index.php?showtopic=2667 [odforce.net]
TO SEE A PIC OF WHAT I'M TALKING ABOUT.

CHEERS