Raytrace materials

tomacmuni · Post by **tomacmuni** » Mon Dec 10, 2007 3:51 pm

Hello

I'm just learning indigo, very early yet.

I sent out from 3dsmax the cornell box scene, and that went fine.
The I applied a raytrace material to one of the boxes (mat01) and the indigo reports that it can't deal with mat01 material.

What's going on here?

Tom

psor · Post by **psor** » Mon Dec 10, 2007 6:17 pm

@tomacmuni

Welcome aboard! And ... hehe .. no raytrace, no maxwell, no V-Ray ...
--> "Maxigo" shaders ONLY please! Of course you can just use the shaders
of Indigo and NOT shaders of other render engines.

"That's the point!" ;o))

take care
psor

suvakas · Post by **suvakas** » Mon Dec 10, 2007 6:34 pm

psor wrote:@tomacmuni
..no V-Ray ...

Yes to V-Ray

You can actually use the vray material if you want. It gets translated (well..somehow).
I also recommend using Maxigo mats though.

tomacmuni · Post by **tomacmuni** » Mon Dec 10, 2007 6:34 pm

Hi

I noticed myself about 2 secs after posting that there's indigo materials. ok...

but what if I have an older scene with many finely tuned raytrace settings that would take a long time to convert over (like local exludes, particular maps that modify the raytracing, and this sort of thing).
It's a bit harsh to have to work from scratch

It should be fairly easy for scripter guys to match the parameters that define a raytrace (And what effects it) with the same values in another kind of material ... like fbx from maya can figure out putting the diffuse texutre in the diffuse slot in the max material).

What i didn't spot yet was how to avoid getting a very grainy, unrefined image using a sunlight -- using constant background turns out a pretty clean image by comparison.

it would be good if someone can run a series of rendered examples with changed parameters for users to make comparisons with (like fstop, film speed and so on).

I'm still downloading the demo video though - hopefully that will clear up some newbie stumbling blocks.

suvakas · Post by **suvakas** » Mon Dec 10, 2007 6:39 pm

tomacmuni wrote:Hi

but what if I have an older scene with many finely tuned raytrace settings that would take a long time to convert over (like local exludes, particular maps that modify the raytracing, and this sort of thing).
It's a bit harsh to have to work from scratch

This kind of stuff is not supported by Indigo anyway. Diffuse and bump maps from standard Max materials are converted. Also vray materials are somehow translated. Everything else is done via indigo materials.

[edit]
Hi and welcome

Can you post your grainy sun image?
You do know, that indigo is a slow unbiased renderer, right?

tomacmuni · Post by **tomacmuni** » Mon Dec 10, 2007 7:05 pm

I feel not ready for posting images yet ...

lots of the images in the gallery are great.

but they seem to have a lot of artefacts that show on surfaces like flecks of not quite resolved colour... like not enough samples.
doesn't this create some shimmering in animated sequence?

in the past i noticed some renderers have flickering white values (like if it's a plain white backdrop) ... and it's painful to render, what, 88 hours, just to find frame to frame shimmering.

Tom

tomacmuni · Post by **tomacmuni** » Mon Dec 10, 2007 7:12 pm

Can one simulate a matte/shadow material in indigo?
Or we need to actually make a real ground plane to sit things on as part of the 'world'?

tomacmuni · Post by **tomacmuni** » Mon Dec 10, 2007 7:32 pm

In the video 22mb from the site, the demo guy is using an indigo plastic material which doesn't seem to be showing up in my version. Why might that be?

tomacmuni · Post by **tomacmuni** » Mon Dec 10, 2007 8:34 pm

this is glass material on the specklypink one, and glass without transparency on the black one, and phong on the two others.
after another 30 mins it looks exactly alike

[/img]

tomacmuni · Post by **tomacmuni** » Mon Dec 10, 2007 10:09 pm

this is the same scene with the colour removed from the center lamp and it's Watts and Lumens values reduced almost to nothing.

Kram1032 · Post by **Kram1032** » Tue Dec 11, 2007 2:42 am

which kind of tonemapping are you using?

tomacmuni · Post by **tomacmuni** » Tue Dec 11, 2007 2:56 am

i believe the answer to that might be 'none' - at least, none that i was aware of.

Kram1032 · Post by **Kram1032** » Tue Dec 11, 2007 2:59 am

lol
either linear, or reinhard, or camera

usually (dunno with Maxigo), reinhard is standard. There possibly are some super-high energy errors with it

What are your new values, now?

suvakas · Post by **suvakas** » Tue Dec 11, 2007 6:48 am

Yes, seems to be too high energy from your light source.
Check what's your gamma value for background (under environment tab). you can try to lower it and see if it helps. Or lower your emitter material value.
By default Maxigo uses camera tonemaping. (at least in latest version)

There is no plastic material in Maxigo. Plastic material is probably from an older exporter project that is abandonned for now. The video tutorial is probably very old too.

Raytrace materials

Raytrace materials

Ah, i spotted that

Re: Ah, i spotted that

slow render

Matte Shadow

Indigo Plastic

tests

lower light

tonemapping

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