[cyberjuls]

???!!!

I think you should read more the technic section of the website so that you'll learn that maxwell does not have GI neither AO. Just check it it's really well explained.

[Mihai]

Why??

[kingpin]

Hi, there.

I think what you are asking (adding AO) is actually asking NL to write another renderer.

AO is a technique to fake GI look with general raytracer, tracing light backward from eye to light source. Since MaxwellRenderer is diffrent renderer; I assume that it uses brute force to trace (with some optimization) all lights from light source to eye... I don't think that you can implement AO (or at least meaningless).

In addition, most of AO is implemented as a shader (not as a feature of renderer). If you realy want to have AO, then, I think that you should ask it for the company who made your 3D package to write AO shader for your native renderer.

[iker]

I just tried Rabbit Renderer for Maya....

Is there a link to see this renderer?

[Mihai]

DarkSun, I think you're a very confused young man No, seriously, that renderer is called Turtle, not Rabbit. You must be thinking of the turtle and rabbit tale and gotten them mixed up.

As for AO, what would you use it for in Maxwell? I suggest you read more about AO, WHY it came to be, what it's purpose is and it will become clear it has no meaning when used together with Maxwell. If you're looking to do a AO pass, then do it in Turtle or Mentalray.

[rivoli]

just a thought, can't AO be achieved turning off indirect illumination (indirect layer) and turning on a white skydome?
i mean something like this:



here's neil blevins' AO article (may be a useful reading):

http://www.neilblevins.com/cg_education ... lusion.htm

[Sergio Apodaca]

Hi

I believe render speed must be solved by other way, not by the way backing up biased old systems of raytracing.

Cheers

[oscarMaxwell]

Hi

I believe render speed must be solved by other way, not by the way backing up biased old systems of raytracing.

Cheers

Exactly. All optimizations will be done in an unbiased way.

[andronikos916]

[jep]

Kingpin - not dogging on you - I agree with your point - I just want to clarify this statement:

Hi, there.
IAO is a technique to fake GI look with general raytracer, tracing light backward from eye to light source.

Ambient occlusion is actualy also known as hemispherical sampling - it DOES NOT use lights at all in the calculation. Think of each point on a given surface as a Bat, that's right, the little furry creature of the night.... and that bat finds it's way sending out many sonic signals and based on how quickly the signals are bounced back it can form a layout of the land...(SONAR) - so, for your point on surface, "P"- it emits rays in a 180 degree hemisphere in a specified distribution - (we'll use 180 for examples sake, the actual optimum angle is debatable for several reasons) As soon as it hits another piece of geometry it returns a value that is translated to a greyscal value - so if the ray fired of the surface hit's something right away the value returned is much lower (darker) if the ray never hit's anything, it returns the max value, white.

Now - how would you like to apply your ambocc Map? As a projection Map in your shader? What if you have motion blur, then what? Is it using the same Camera system? How is the motion blur of your target renderer calculated? Ambocc works well for specific cases, however Why would you want to use it of you have full GI at your fingertips? Anycase, I have an AMBOCC shader for Mental Ray that's faster than an new mustang... but so what.... GI is where it's at... Ambient Occlusion and Reflection Occlusion are just work arounds for lack of a better production happy solution. I understand why you ask if maxwell can do this but you have to really think of the tools you have available to you.... don't try to drive a nail with a Grand Piano, you know?

I am interested though at how you plan on applying your AmbOcc - each way has it's merits as well as inherint problems... I'm happy to help you avoid the pitfalls that I know about.

BTW, it's nice to know that my spelling still sucks!

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[kingpin]

Thanks jep.

The statement was really confusing (simply bad grammar?)...

What I meant was that AO is useful for conventional raytracer and GI tracer (I believe that it is actually an extended raytracer using photomap etc. to implement GI calculation... hence... tracing light.. ) and that since Maxwell is not this type of renderer, AO is not useful. Though, I thank you for clarifying.