CGTalk - Texture problem, looks bad on wide field

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Mindexperiment

01-15-2008, 06:35 PM

Hi all, I'm new here and I'm sure I found a very good CGcommunity..

I got a problem with a texture..
I have made a wall full of tile and I have to point the attention on the tile's texture. The material I made has this settings:

standard/multi-layer map, the filtering is summed area.. I got the upladed image in the diffuse channel, a grey copy of that in bump channel and a falloff map in reflection. Self illumin 100, diffuse level 100, roughness 30, super sampling enable->quality 1..

I use mental ray as render with sample min 1 max 16..

After that, my problem is: if I render a nearfield image the texture looks very good.. but if I move the camera away the image become unrecognizable..

Here you can find some example..
http://www.risorsedireason.it/privata/30x60fondo.jpg <-- the texture
http://www.risorsedireason.it/privata/Wall_missoni_good_near.jpg <-- the near good tile
http://www.risorsedireason.it/privata/Wall_missoni_good_far.jpg <-- the very bad wall

Somebody has some advice?
Many thanks to all

soulburn3d

01-16-2008, 02:06 AM

Looks like you're getting moire patterns. Maybe try and increase the mina nd max samples and see if that helps?

- Neil

Mindexperiment

01-16-2008, 12:31 PM

Hi soulburn3d, thanks for your help, I try as you say but the image has improved slightly..

So I have made some changes.. First of all I have set the self-illumination of the material to 0.. Place a sunlight and a photometric light inside the "room"..

Well I've gained in realism but I got always the same problem.. my texture looks better with a near field camera and too bad with a large field.. I don't need the perfection but a good looking..

understand? :(

Mindexperiment

01-16-2008, 10:13 PM

Now I found a good looking.. but I have problem with mental ray...

With no light (default) I can view my render.. If I insert a light all the screen/output become black..

I try some type of light and got the same problem.. I have touch something I don't know.. becouse if I create a new document mental ray works well..

Suggestion? I search about.. mmh it's 5 hour I'm here without solution.. grrrrr

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01-16-2008, 10:13 PM

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