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Author Topic: forest 2.4 + mentalray + mrSun/Sky general tips ?  (Read 5035 times)

BB1610

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forest 2.4 + mentalray + mrSun/Sky general tips ?
« on: May 29, 2008, 01:55:57 PM »
Hi, i just want to ask for some general optimizing tips when rendering with forest 2.4 + mr+mrSun/Sky under max2008 x64, for instance - when it is good using specialized mental ray material with forest shaders loaded into it, or planes material ? and some tips for xShadows .. thanks in advance

iToo

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Re: forest 2.4 + mentalray + mrSun/Sky general tips ?
« Reply #1 on: May 29, 2008, 04:37:58 PM »
Hi,

Planes Material works creating a mental ray material that uses Forest Texture + Forest Shadow, so if you don't include other shaders (as Photon or Volume), the result will be the same. We suggest you always use Planes Material.

XShadow doesn't work with Mental Ray. Max use automatically Raytraced Shadows when XShadow is detected.

However, Forest 2.4 is not the best option to work with mrSun/sky, because it doesn't include the improvements done for Mental Ray of Forest 3. We have rewritten the shader to provide better compatibility with HDR solutions (as mrSun). I strongly recommend that you upgrade to Forest 3 if you can.

Carlos Quintero
iToo Software

DIMITRIS

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Re: forest 2.4 + mentalray + mrSun/Sky general tips ?
« Reply #2 on: May 29, 2008, 05:53:45 PM »
I agree.... Forest 3 is much better
I will sign it only if it is a piece of art!

BB1610

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Re: forest 2.4 + mentalray + mrSun/Sky general tips ?
« Reply #3 on: May 29, 2008, 06:33:15 PM »
does FP3 speed up rendering with MR ? what exactly do you by improvements for MR ?

BB1610

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Re: forest 2.4 + mentalray + mrSun/Sky general tips ?
« Reply #4 on: May 29, 2008, 06:52:30 PM »
does Xshadow work  in FP3 with MR ?

iToo

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Re: forest 2.4 + mentalray + mrSun/Sky general tips ?
« Reply #5 on: May 29, 2008, 08:18:38 PM »
That i remember:

- Support for mrSun lights. Forest 2.4 was rendering dark textures with HDR solutions
- Better illumination computing, fixing some issues of 2.4
- Self-shadow detection (see sample image at http://www.itoosoft.com/english/menu.php?id=forest_mat)
- Fixed problem with "haze" effects (mrSky)

XShadow is not compatible with Forest 3 either, because it's designed to work with standard renderer. For raytrace solutions (as MR or VRay) is much better to use raytraced shadows. Rendering speed have not changed from 2.4.



Carlos Quintero
iToo Software

iToo

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Re: forest 2.4 + mentalray + mrSun/Sky general tips ?
« Reply #6 on: June 04, 2008, 07:27:32 PM »

You will like to know that we have improved the rendering speed with MR in Forest 3.01.

In our tests, a sample scene with 5000 trees that needed 3m27s in Forest 3.0, now renders in only 22s.

See the post about Forest Pack Pro 3.01 Beta for more info.

Carlos Quintero
iToo Software