Radiosity and radiosity override materials

[Luigi ascione]

Hi guys

i am working on a animation project.

I have modelled it and it looks good in lightscape.

Now, becouse i want animate the model with

rpc moving people and cars, i am forced to

render the model in viz. Which is fine.

The problem is that i cannot get the same effect in viz4. Trying many setting: I have set the sunlight and skylight, enviroment, exposure,

radiosity to 85% and the rendering looks crep.

What should i do to get a similar effect to lp

or if not the same, acceptable.What are the

necessary steps to follow.

I also imported the ls file in viz4 but it looks

bed (its not the same thing.Hmmmm.

Thanks for your help

[Cesar R]

Luigi, post comparing images =0

[Luigi ascione]

Hi cesar, Thanks for the reply.

i have attached the files.

The lp image are just testing for the model

and they have some chrome and glass applied

to see the effect.

the viz file has got radiosity at 60% and same materials applied. (not sure how st materials for radiosity in viz - used radiosity override mat)

the differents - you can see yourself.

I am not an expert on viz! of course!

any suggestions? and what should i do to set right the materials?

I appreciate your help.

note: i have tried many things as exposure,subdivision, daylight settings etc etc.

i don't know what i am doing wrong.

http://www.cgarchitect.com/forum/filepush.asp?file=lp_test_01.jpg

[Luigi ascione]

Cesar

i cannot upload the viz version

i am having problem with the upload utolity.

i will try later.

cheers

[Luigi ascione]

here we are

http://www.cgarchitect.com/forum/filepush.asp?file=viz-version-2.jpg

 

http://www.cgarchitect.com/forum/filepush.asp?file=lp_test_02.jpg

this is a second view of lp

[Cesar R]

luigi, id be glad to play with a protion or test model of your material and I can tell you what your missing. Those light artifacts can be eliminated by using regathering.

[abicalho]

The artifacts mean you need to solve to a higher quality.

 

Also, use Filtering of 1 or 2.

 

Alexander

[kainoa]

Those light artifacts can be eliminated by using regathering.

DONT use regathering just yet. Regather adds a TREMENDOUS amount of time to your renders and, IMO, you can achieve great renders without it . First, i'd suggest the threads below:

 

http://www.cgarchitect.com/ubb/ultimatebb.php?ubb=get_topic;f=29;t=000006

 

http://www.cgarchitect.com/ubb/ultimatebb.php?ubb=get_topic;f=34;t=000001

 

Before you try regather, check your units and make sure you have an appropriate mesh subdivision size. I never use regather and think it should be used as a last resort.

[Cesar R]

DONT use regathering just yet. Regather adds a TREMENDOUS amount of time to your renders and, IMO, you can achieve great renders without it .

if you are doing an animation, try to solve the problem without regathering by subdividing the mesh further. Also as stated, check your units. However if it is just still shot I would render it with regathering. I really think it is up the scene. I find regathering very helpful in interior scenes.

[Luigi ascione]

Thanks very much guys.

with your help i am starting to understand

much more of viz4.I will try all your advice today

and let you know.

Also i would like to sent you the materials

settings but i think is the same if i tell you

that i have used standard materials from viz

and used radiosity override on it.

What and how should i make a material in viz

that is good for radiosity processing.

eg. how would you create a chrome material?

Also the texture sky - if i apply a color or texture to skylight settings, would i get an

effect in the glass as happen in lightscape?

When i use a sky color in lp and i render the image, the glass always pickes up a kind of that color that i have set in the property background

color - how do i get the same in viz?

i read somewhere that i can use a texture bitmap

in the texture sky and use the rgb value as illumination map!!! How?

Thanks

luigi