rendering of strips

[nodar1978]

hi guys, maybe it's a bit stupid question, maybe i have to find answer on it myself, but i don't have a time to solve this problem, I already spend quit long time to do something with this but ...

I have to rander wall with strips, but when i'm rendering this wall with strips texture it looks like on a picture i attachet here.

please could you give me some advise?

thanks in advance

nodar

[Horhe]

Try setting the antialiasing minimum samples from 1 to 2

[shaneis]

That rendering artifact is known as "Moire Interference". It is an aliasing artifact caused by insufficient raytracing samples for that particular object/ texture. You can reduce or even eliminate it by super-sampling for that object. I'm not a Max user so someone may be able to point you to the correct settings in Max, but in Maya, we can create custom sampling seetings per object and this is what I'd recommend you do.

 

So, the rest of your scene would have one overall sampling setting and you'd apply a higher setting to that wall. For example, my general AA settings would be 0 min/ 2 max and I'd apply the settings 1 min/ 3 max to that wall only.

 

All the best,

 

S.

[Peter M. Gruhn]

Yes, anti-aliasing, super sampling, which sampler/filter, in MentalRay on the Renderer tab Samples Per Pixel...

 

I tried only in MR, was able to duplicate your problem easily. The only good solution I could get was turning the minimum sample up to 64. I don't know if there is a way to do per object sampling setting under MR.

 

BUT ... I've had a clever idea, let me test it out.

 

I don't know how you created your lines, I used a gradient ramp with "solid" interpolation. The sampling we are trying to do is analogous to blurring, we're just trying to figure out the best kind of blurring. So...

 

Pre-blur texture. I add a couple more points in the gradient, switch from solid to linear and my line edge is blurred. The results are pretty good. Even up close it isn't too bad. Oh yeah, and I kept minimum samples at 1 for all of these (max at 256 which is a bit high, but I'm not the one who has to tweak your settings ;-).

 

But maybe you want it extra fine and crisp and sharp. We can deliver.

 

Use a mix map to mix the blurred map and the crisp map based on the distance from the camera. I just guessed for where it should go. If I had looked a litte closer I would probably move it out a little further. It looks a little off but you can see the potential. wall2kind.jpg and walltwokindswithcolor.jpg are the same except for changing the colors in the two gradient ramps to help illustrate the point.