So, cause i´m not using dynamics, is it better to give the hairs a dynamics,
so it got a cache, and turn all sensitivity to force to zero, that the hairs
got cached ????
And turn this afterwards to read only???
I´ll give this a try if there will be still such pops
Regards
Holger
> Von: Kim Aldis <XSI(at)kim-aldis.co.uk>
> Antworten an: <XSI(at)Softimage.COM>
> Datum: Sat, 28 Jul 2007 08:08:08 +0100
> An: <XSI(at)Softimage.COM>
> Betreff: RE: AW: Hair flicker
>
> Manny¹s probably right, but the steps for rebuilding the cache are very
> specific and need to be followed carefully - . Do this before rendering or
> capture and you should be fine:-
>
>
>
> · Set cache mode to read & write
>
> · Hit ?reset dynamics¹
>
> · Park the timeline right at the end of your animation
>
> · Wait for sim to rebuild
>
> · Set cache mode to ?read only¹.
>
>
>
> Also, watch for the cache filename. Just like particles, the name is only
> unique within the scene. If you¹ve more than one scene with dynamic hair in
> it you¹ll end up using the same cache for some hair objects. Always rename
> the cache filename to be unique to the scene, preferably when you add
> dynamics.
>
>
>
> Manny¹s also right about avoiding dynamics when you can, not just because
> you don¹t need it. Certainly don¹t rely on collisions working with any
> degree of reliability. If you can get them to work, be also aware of
> limitations, particularly what happens when hair strands fall either side
> of, say, noses and ears; when it renders the hair will be interpolated
> between the strands and cut through the geometry. Collisions are pretty
> flawed in this respect.
>
>
>
> From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf Of
> Kris Rivel
> Sent: 28 July 2007 04:08
> To: XSI(at)Softimage.COM
> Subject: Re: AW: Hair flicker
>
>
>
> XSI's hair caching sucks big time to be honest. I recently wrapped up a
> project using quite a bit of hair instancing and I had to constantly re-sim
> the hair system to eliminate popping. There's no guarantee that your sim
> will properly write or be read when rendering so you will often find
> yourself cursing quite loudly and re-simulating on a regular basis. This is
> one area of XSI thats needs serious improvements.
>
> Kris
>
> On 7/27/07, Manny Papamanos <mpapama(at)softimage.com> wrote:
>
>
>
> I don't think this should be labeled "flicker" since you are getting a
> series of good frames and occasionally there is a bad one.
>
> This is a "pop".
>
>
>
> When you render the bad frames and the same result occurs, I would suspect
> bad "cached" files from dynamics.
>
> Someone may have messed up the cache by opening/playing with the scene and
> the cache was not set to "read only"
>
> Or a computer can simply not access the cache.
>
>
>
> To fix, you may need to:
>
>
>
> Backup and remove the cached files
>
> recreate the cache,
>
> Make sure the path is accessible to all computers on the farm.
>
> Render the popped frames.
>
> I personally would avoid using dynamics on Hair since it's not really
> necessary here.
>
>
>
>
>
> Manny Papamanos
>
> XSI SPECIALIST AT SOFTIMAGE HEADQUARTERS
>
>
>
>
>
>
>
> _____
>
> From: owner-xsi(at)Softimage.COM [mailto: <mailto:owner-xsi(at)Softimage.COM>
> owner-xsi(at)Softimage.COM] On Behalf Of Wayne Williams
> Sent: Friday, July 27, 2007 12:02 PM
> To: XSI(at)Softimage.COM
> Subject: Re: AW: Hair flicker
>
>
>
> The max is 14 ya?
>
> ----- Original Message -----
>
> From: FLINX(at)mark13
>
> To: XSI(at)Softimage.COM
>
> Sent: Friday, July 27, 2007 11:36 AM
>
> Subject: AW: AW: Hair flicker
>
>
>
> ok...i'll try that....the segments are up to 10 now....what would you
> recommend?
>
>
>
>
>
>
>
>
>
>
> _____
>
>
> Von: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] Im Auftrag von
> briand(at)hatchling.com
> Gesendet: Freitag, 27. Juli 2007 15:59
> An: XSI(at)Softimage.COM
> Betreff: re: AW: Hair flicker
>
> We had something pretty similar happen to us. What seemed to work was upping
> the # of segments on the hair.
>
>
> _____
>
>
> From: "FLINX(at)mark13" <flinx(at)mark13.com>
> Sent: Friday, July 27, 2007 6:13 AM
> To: XSI(at)Softimage.COM
> Subject: AW: Hair flicker
>
>
>
> ehhhmmmmm...holger that's not 100% correct...we had to rerender,
> because ONE machine already messed up every 10th (or so) frame.
>
> so we wanted to rerender on a machine that didn't produce bad results in the
> first render....but now those frames are fuckedup aswell....
>
> here's a short movie: www.mark13.com/goto/flinxes
>
>
> thanks for suggestions folks...
>
>
>
>
>
>
>
>
> -----Ursprüngliche Nachricht-----
> Von: owner-xsi(at)Softimage.COM [ <mailto:owner-xsi(at)Softimage.COM>
> mailto:owner-xsi(at)Softimage.COM] Im Auftrag von Holger Weiss
> Gesendet: Freitag, 27. Juli 2007 11:58
> An: XSI(at)Softimage.COM
> Betreff: Hair flicker
>
> Hi,
> We have a bizzar problem with rendering hairs We open a scene with a hairy
> charakter and render it on different computers.
> All is good and no flicker occures.
> But than we have to do some rerenderings ( on one computer a day later) and
> the hairs behave totally different .
>
> Had anybody same problem and a quite good solution???
>
> Regards
> Holger
>
>
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