Creating a good fluffy rug in mental ray

[jinsley]

even for approximate time - thats excellent time for hair and fur - mine was taking 1hr+ at which point i stopped it ..

 

i have 6gb or Ram and i7 with 8 cores

 

do you mind posting the settings of your material?

 

sure, not a problem except the original file is at work right now... but I have one at home which I did all my original tests on... I will find it tomorrow or Saturday and post it up so you can see the geometry and material settings...

[jinsley]

here is the image of the file I will share... as soon as I find a site to store it, any suggestions?

 

This time I used a little heavier geometry than before and upped the number of "hairs"... rendered out in 14 mins on my quad core using about 1.4 gigs of ram. Also added a second rug with the same settings draped over a torus knot just for fun and to see how it would work with the cloth modifier.

 

http://img203.imageshack.us/img203/8946/smallpost.jpg

[pixelperfectg]

For optimal render times with hair&fur or similar small/fine detailed items don't overlook using the fast rasterizer & mr shadow maps. Doing so will generally provide much faster render times and often a better looking hair&fur result than when using image sampling/raytracing.

 

Example:

render time = 2m 26s and could be further optimized for faster renders.

[Stan Zaslavsky]

hi james,

you could always store it on rapidshare or similar site storage websites ...

 

yousendit is great if you have the email address of the person you are trying to send it to. PM me & it'd be great to get the model through yousendit if you dont want to upload it to the sites above.

 

Jeff - your image looks excellent - is there a tutorial for utilising mr shadow maps to get a result like this on your site?

 

cheers,

[jinsley]

For optimal render times with hair&fur or similar small/fine detailed items don't overlook using the fast rasterizer & mr shadow maps. Doing so will generally provide much faster render times and often a better looking hair&fur result than when using image sampling/raytracing.

 

Example:

render time = 2m 26s and could be further optimized for faster renders.

 

How do you acheive the mental ray shadow maps with MR sun and Sky Jeff???

 

hi james,

you could always store it on rapidshare or similar site storage websites ...

 

yousendit is great if you have the email address of the person you are trying to send it to. PM me & it'd be great to get the model through yousendit if you dont want to upload it to the sites above.

 

Jeff - your image looks excellent - is there a tutorial for utilising mr shadow maps to get a result like this on your site?

 

cheers,

 

Stan, i will upload to rapidshare later... I am just heading out to take my son for some pizza...

[pixelperfectg]

Jeff - your image looks excellent - is there a tutorial for utilising mr shadow maps to get a result like this on your site?

I don't have a tutorial for it. However, Zap has a brief discussion about it on his blog: http://mentalraytips.blogspot.com/search/label/hair

 

How do you acheive the mental ray shadow maps with MR sun and Sky Jeff???

I don't. I'd probably configure a copy of the original scene to use a mr shadow map light source and then region render the carpet area out separately and combine the hair/fur/rasterizer render with the original render.

[jinsley]

I don't have a tutorial for it. However, Zap has a brief discussion about it on his blog: http://mentalraytips.blogspot.com/search/label/hair

 

I don't. I'd probably configure a copy of the original scene to use a mr shadow map light source and then region render the carpet area out separately and combine the hair/fur/rasterizer render with the original render.

 

ha ha, ok, good... I thought I was missing something... rendering out a separate pass and comping makes sense...

 

although it would be nice to have it all done in scene. I think that is what I am trying to achieve through these tests...

[jinsley]

off topic, I recently grabbed a few of your MR walkthroughs off of Gnomon Jeff and they are great... confirmed a lot of things in my workflow for me and taught me a few too! Thx.

[pixelperfectg]

off topic, I recently grabbed a few of your MR walkthroughs off of Gnomon Jeff and they are great... confirmed a lot of things in my workflow for me and taught me a few too! Thx.

Thank you. Good to hear you found some of the info helpful.

[urakis]

very nice rendering, although you may need to put some mr sky portals outside the window to add more light into the scene, the reason i suggested this is because you have a fairly bright background image outside the room but it seems like your scene is not getting any illumination from it.