RE: Why is Motion Blur so slow?

["Andi Farhall" <Andi.Farhall(at)primefocusworld.com>]

Is there much more to AA than,

 

"if contrast between sampled pixel and previous one is greater than threshold use max sample level else use min sample"?

 

Andi

-----Original Message-----
From: owner-xsi(at)softimage.com [mailto:owner-xsi(at)softimage.com]On Behalf Of Kim Aldis
Sent: Thursday, July 12, 2007 8:30 AM
To: XSI(at)softimage.com
Subject: RE: Why is Motion Blur so slow?

The other thing to consider is the anti-aliasing settings. A lot of people don’t understand how it works and get it badly wrong. I’m not saying you do, but a lot of mistakes are made out, to great cost.

 

From: owner-xsi(at)Softimage.COMi [mailto:owner-xsi(at)Softimage.COM] On Behalf Of Byron Nash
Sent: 11 July 2007 18:51
To: XSI(at)Softimage.COM
Subject: Re: Why is Motion Blur so slow?

 

Thanks for the tips guys. The only mentioned here that I haven't used much is the Rasterizer. I'll give it a whirl. Do other renderers have this problem or is it a Mental Ray issue?

On 7/11/07, Chris Johnson <chrisj(at)topixfx.com> wrote:

This is easily the worst thing about Mental Ray.

We tend to do a mix of all these things. More often then not we have to go to a 2D Motion Vector solution. However the re-projection method is fantastic for things that move really fast. So sometimes we'll  render with full 3D motion  blur and then  do the big moves or problematic frames with the re-projection method. I've had problems with the rasterizer with things breaking frame and coming close to camera. We've also found Motion Vectors really don't hold up at HD...we have to do a lot of Paint back in comp.

Just buy a gigantic render farm! My saying for Mental Ray...the more processors the merrier!

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Byron Nash
www.armoredsquirrel.com

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