Dirtmap

[arkiedmund]

I read somewhere that if you need to make a quick yet acceptable render, you can use MR dirtmap, together with your scanline renders and composite the whole thing in adobe photoshop.

 

I once found a tutorial in here. yet I can't seem to find it now. Can anyone here give me a guide on how this Ditrmap technique works?

 

thanks to all......

[Brian Cassil]

I don't know about the "dirtmap" tutorial you're referring to. But what you are actually looking for is info on the "ambient occlusion" shader.

[Hao La]

Here are some tutorials about Dirtmap (or other name Ambient Occlusion)

 

http://www.cgarchitect.com/vb/showthread.php?t=11360

http://www.cgarchitect.com/vb/showthread.php?t=7062

http://www.cgarchitect.com/vb/showthread.php?t=6058

[arkiedmund]

Great, thanks a lot for the links. I will try to work on it..and hopefully post something in the forum galleries.

 

If there are still more links that some of the guys can share in here, feel free to do so.

 

I'll be checking this once in a while.

[martincg]

or this is not bad too:

 

http://everflow.com/support/tutorials/AO/Everflow_AmbientOcclusion1.html

[the.3dsmax.blogger]

a bit off topic ..

 

we all know what ambient occlusion / dirtmap is and its relevance in good renders ...

 

I would like to know any tehcnique on how we can generate an render / material effect that creates actual DIRT at edges nooks & cranies of our models ( very random effect ) ..

 

pls comment ...

 

ps: martin: everflow.com was a very cool link .. thanks for the same

[Hao La]

the.3dsmax.blogger : you can create a map with dirtmap on it by Photoshop and then apply to you model. Using real picture and clone tool to copy the dirt spots to your map.

[the.3dsmax.blogger]

hao la: true .. that is one way .. the old fashioned way .. i must say !!!

 

but is it possible to get a procedural or a scripted way of getting the same effect done ..

 

suggestion: can we use the ambient occlusion effect to identify where the material could be more dirty than the other areas and then automatically align some texture map to it.

 

maybe i had heard of a plugin that achieved something like this ( though not using ambient occlusion ) called as the DIRT REYES. but that was quite some time back.

 

I am sure technology changes / techiques improve .. if there are any other solutions , that somebody could share .. nothing like it !!!!!!

 

Thanks