Using of the Exit Portal for interior illumination...Any .pdf tutorial?

[jorari71]

Hi...I'd like to know how to do a thing in FryRender.

 

I want to illuminate an interior only with an exterior light (Sun+Sky light) but with a special way: this can only be with an indirect light because the sun beams don't fall on directly. We should say these beams fall on the other side and we are inside the part on shadow of the building.

 

I've heard that FryRender has something like the VRay SkyPortal.

 

It sounds for me like a fake illumination mode...I wouldn't like using this method. I've been making tests illuminating only with the Sun light without the recommended "ghost glass" which is (what a casuality) said the perfect combination for the Exit Portals FryRdner property object.

 

 

The truth is that I've test Maxwel and makes very well. Without any fake method (although Chema has said the opposite in the official forum) like in Fryrender. Maxwell is so simple and powerful!!...But it's soooooooo slowwwww...

 

With VRay it's still impossible achieve the illummination that I pursuit.

 

And With FryRender I can achieve the same results that with Maxwell but with a more advantage: I think It's faster...Maybe double time. And I was asking about the way to improve the speed of the render using this workflow...

a).-I've got to add the Fryrender property of ExitPortal to my window object (must be a plane or can be a thin box what I'm using like a glass window? ).The normal of the window has to be oriented inside the interior space (a room for example)

 

b).-I've got to use the ghost glass instead the original glass. Haven't I?

 

c).-The Sunlight will be added to the Exit Portal light?

 

I miss more FryRender tutorials from the official web...Many of us can't access to in the corresponding section of the official forum. What a pity. Anyone of you has any .pdf tutorial?

 

Thank you.

[Fran]

Hi Jose,

 

a)Fryrender does not have exit portals anymore.

 

b)Use ghost glass for any glass that does not require refraction.

 

c)See a.

 

Have you downloaded the user manual? It's quite thorough, but not a step-by-step tutorial by any means. Only licensed users have full access to the forums.

[jorari71]

Thank you very much Frances...

 

Maybe this is because I'm using the 1'9 Beta version, isn't it?

 

I've been reading your answers and I noticed that you have a great control of this program (Fryrender)... Cheers...

 

Regards.

[RayOfLight]

nothing against Fryrender, but I do find it strange you didn't get the illumination you wanted with Vray. Although it is not as precise and accurate as fryrender (hardly anything is ) it should be fairly easy "to get light on the dark side of the moon"...If you use a daylight system and perhaps a vraylight as "skylight portal" (which 3d program do you use?)

[jorari71]

What I know is that I've been working 2 years more or less with Vray with "fantastic" results and in this scene I think it hasn't been able for me to achieve the complete illumination.

 

But I've tried with Maxwell for the first time and after 1 week I can illuminate with a 90% of fidelity respect the photografies I've taken from my interior scene.

 

But the problem was that it means: 20 hours of render!

 

I heard that fryrender was faster and tried with it...And I think is double time faster although I haven't reach the exact temperature and tone for the global lillumination...But the interior scene is completely illuminated and remember: without any direct beam of light. This is only possible to achieve with unbiased render engines. I've heard that with a QMC in the primary and secondary bounces I would can achieve the same results but I don't think so...I've tried it and nothing...

 

I will show you the original photos and my achievements...

 

Thank you very much.

Edited September 10, 2008 by jorari71

[Fran]

Hi Jose,

 

If you enable Reflective caustics in the Vray global illumination settings, you will get more effect from indirect illumination. It greatly increases render time though. I'm looking forward to seeing some renders that demonstrate the problem you are having.