3delight tests

[Kzin]

path tracing is slower, needs more ram and you have the noise/quality tradeoff.
it cant be that fast then reyes because like the name says, it renders only what the cam sees in the bucket which is currently rendering. it does not care about the things outside of the actual bucket. pt is completely different, takes alot more renderpower and solves slowly. but thanks to all the crazy amount of processing power which the big studios have they switch to pt or bidirectionel pt. it saves setup time, thats right, it renders more realistic out of the box with modern implemented shading models but the downside is the extrem long rendertimes and memory usage compared to reyes.

if you need fast renders with alot of dispmapping, mb and perhaps dof, then reyes could be a better choise when you dont need gi. but with point based color bleeding, which is really fast but not accurate as path tracing, you can also render with gi and, most important, noisefree.
noise is the big problem here for a path tracer, especially with alot of indirect light. bidirectionel path tracing can help alot in such cases. of course, all of this does not cover caustics, for this exists better methods.

[McNistor]

Thanks kzin for your input.
However, are you talking about 3delight or raytracing vs reyes in general? If that's the case, I already know about the trade-offs when choosing one or the other and I was more interested to know if 3delight changes or brings something new regarding all these well-known facts.

[Mathaeus]

If that's the case, I already know about the trade-offs when choosing one or the other and I was more interested to know if 3delight changes or brings something new regarding all these well-known facts.

I don't know, honestly. Tried some path tracers, but didn't used any of them for something serious. For now, simply there is no reason to do that.

[Kzin]

more interested to know if 3delight changes or brings something new regarding all these well-known facts.

no, it does not. it has the same problems like arnold for example with some things arnold can handle better actually, like the clamp thing.

[McNistor]

Ah, I see.
What clamp thing,
is it the equivalent of color clipping in Mentalray?

[Kzin]

clamping values is needed for really high energy pixels which are hard to solve when only a small amount of pixels in the scene have this energy and reflecting on surfaces for example. you would need a hell lot of sample to sample such small areas and solve them. its easier and result and better solved images when you clamp suxch values to a max value.

in vray its the color mapping stuff, in arnold the clamp option and in mr together with mila shader the clamp string option.

[anhungxadieu]

hi there,

i try to learn 3delight in this tutorial(link below), but i have no luck .Anyone who already familiar with 3delight can help me do a simple start with it.
https://3delight.atlassian.net/wiki/dis ... +Softimage

what i want is how i can do like this guy in this movie. I don't know how to registy a shader
https://3delight.atlassian.net/wiki/dow ... 930&api=v2

Thank for your attention!