Max->Maya Radiosity Faking

[Deepray]

a "a lot time consuming" metod is this... (from my friend Lichiman ( at www.lichiman.com ) :

.- 1 only ambient light on top of the scene.
.- Ambient Shade = 0
.- Raytrace Shadows -> Shadow Radius = 90.

Thats it. turn up shadow quality to 15 rays. ;)

http://usuarios.lycos.es/lichiman/sesiones/pruebaGI.jpg
http://usuarios.lycos.es/lichiman/sesiones/GunbotGI.jpg

[RoarK]

Deepray dude i tried ur settings but im sorry to say that all i get is a render view filled with the default grey color, with ambient shade=0 everything in the scene gets reduced to one color and u cant see the objects in the scene, also with ambient shade set to a default value i get a pretty regular ugly render nuthin close to "radiosity", please halp!! btw the ground plane n objects in the scene..do they need to have high subdivisions/sections?
thx again dude :beer:

im attachin the image rendered with the settings u mentioned (amb shade = 0)

[Deepray]

Put your ambient light too high... like 10 times the highest point of your scene... ;)

[JamesDeschenes]

Also make sure raytracing is turned on in the render globals :) :applause:

[InnerVortex]

woo i used that same tecnick with a point light in some stupid direction, with the ambient one looks really fine, but.. it do is painfully slow. maybe with mentalray? isnt it faster for raytrace?

[RoarK]

Gee im such a dumbass...yes i didnt enable the raytrace option in render globals...how am i supposed to know huh??? thanx a tonne guys ur such sweeties and im gonna be postin some pics so do check back...thx again...ciao :bounce:

[cgg]

hehe this is so gr8
thanks alot guys :beer:

[cgg]

i did some testing and i got this interesting results:
both images was rendered on the same computer p4 2.26 ,512ddr and they had the same settings but the 1st image was rendered using maya software and took 25 minutes, the 2nd image was rendered using mental ray [no gi or other mr abilities] again with the same settings and took 4 minutes.

1st ,using maya software:
http://gocg.netfirms.com/ms1.jpg

------------------------------------------------------------------------------
2nd ,using mr
http://gocg.netfirms.com/mr1.jpg

[RoarK]

yeah cgg mental ray is bloody fast i was tryin out some stuff aswell, only thing is that u need to increase the min/max samples or opt for undersampling to get smooth renders(less grain).
check out info on undersampling(brazil renderer in particular but applies to all) at www.neilblevins.com

and btw, i think the procedure as explained deepray is more towards Global illumination i.e - for "outdoor" scenes, whereas i was seekin a specific solution for "indoor" scenes thus pertaining to radiosity(industry consensus on terminology). anybody?
thx again:surprised

[NeonGuy]

okay, i gave i try for this technique, it's cool but i have a problem.
can you see the stripes on the sphere??? why is that??? i can't get rid of it? what's wrong??

[NeonGuy]

oh and the attachment, sorry.

[NeonGuy]

oh and the attachment, sorry.

[NeonGuy]

uhh oooh!

it's because the tassellation options! turn it very high!!!! :thumbsdow

[pixho]

Hi,

Yes you can increase the tesselation, but you can also increase the ray-trace bias (renderGlobals)

This will offset the light rays and remove the terminator effect.


Emmanuel

[NeonGuy]

yes i tried the bias, but it shifts all of my shadows! :(

i guess the perfect solution is the tassellation. thanks anyway :thumbsup:

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