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Technical Discussion » bounced light / object lights


peliosis: 175 posts; Offline

Oct. 17, 2005 16:54:30

Wouldn't it be possible to temporarily walk this problem around (If it's so complicated it would probably take some time to introduce) and incorporate mental ray into houdini?

It would benefit from a ready architecture and should be as easy as translating the shaders and attaching MR to houdini package

It is distributed with almost all serious software, why sesi does not take the advantage of it?

It would be great to use vops to build MR shaders.

Mantra is great but It's not a fast raytracer and todays fast, “wash and go” renderers are beginning to rule the market.
Don't you think that incorporating one of them into houdini would be a jump start popularity igniter? It's by far the only thing I really miss in this package.

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Houdini Lounge » Apprentice Challenge


peliosis: 175 posts; Offline

Oct. 17, 2005 16:00:33

Perhaps they could make one if we are loud enough

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Houdini Lounge » NTFS or FAT32?


peliosis: 175 posts; Offline

Oct. 17, 2005 15:52:42

Hello J.C.,

I've got some trouble with that FAT on my mobile drive.
I tried ext2 and reiserfs, they are ok (reiser only deletes veeeeryyy sloooow).
But as soon as I reformat partition with FAT, opening a directory containing a few thousands of files (video sequence) is a misunderstanding.

I'm a bit unhappy about this

On windows there is absolutely no problem so I didn't expect any drawbacks in suse with such a stupid thing.

Do you have any idea what to do or where to search?

By the way what filesystem would you recommend under linux? I read great things about reiser4 performance, is it worth it? What filesystem do you store footage on while compositing?

Peter

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Houdini Lounge » Legacy material?


peliosis: 175 posts; Offline

Oct. 8, 2005 18:18:28

Thanks, I have all of them, I was thinking about the ooold pdf's that were called “legacy material” on former sidefx site.
I thought there were some useful hints but they can't be found anywhere.

Peter

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Houdini Lounge » SUSE 9.3 file sequence managing slowness?


peliosis: 175 posts; Offline

Sept. 29, 2005 09:26:37

I've read something about it and unless you can advice me with an easy, working, fast, noproblem solution I'll be happy to use fat

I have enough troubles getting everything to work properly, I'm not used to lay down lines of unknown characters to make my CD working

This is my 4 th month of “trying to get used to suse”

But if ntfs in linux is a real “np” I'd happily switch.

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Houdini Lounge » SUSE 9.3 file sequence managing slowness?


peliosis: 175 posts; Offline

Sept. 29, 2005 07:44:48

Haha, I thought I'm the only one to have troubles wuth firewire, the case is I don't even use it on my desktop system because I'm fed up with trying to configure it and use USB2 instead

I'll check the transfer limit, unfortunately I really need to keep it in FAT.
And unfortunately it is one longlasting shot

which really likes to be watched as a whole. Ofcourse I could cut it but it would be less convenient.
I thought I read somewhere FAT is the best for video sequences because it's simple, could it be true?

cheers

P

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Houdini Lounge » SUSE 9.3 graphics question.


peliosis: 175 posts; Offline

Sept. 29, 2005 07:30:39

Thanks for an enlightment.
By the way how much ram can 32 bit linux address? In Xp it is around 3.5 Gb isn't it?

JC you've just saved 4 Gb's of my precious mobile space, thanks

.

And about that polycount problem…I've realized it wasn't pure geometry load issue because when I rop-file'd it and than duplicated, It easily reache over 4 million.

I'll check that driver but everything seems to be just fine, YOU installation without any problems, opengl working, driver “nvidia”.

One thing I like about linux is in a few months it made me understand my computer far better than 10 years of using windows.

cheers

Peter

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Houdini Lounge » SUSE 9.3 file sequence managing slowness?


peliosis: 175 posts; Offline

Sept. 28, 2005 17:20:09

Thanks again

It actually IS a mobile usb/firewire drive, and I am in bad situation because I need to use these sequence for xp and suse interchangeably. Thats why I have this oldboy fat.
It seems like linux deos not manage it as good as windows, because only in suse I found these issues.

Peter

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Houdini Lounge » SUSE 9.3 graphics question.


peliosis: 175 posts; Offline

Sept. 28, 2005 17:13:37

Thanks for a rapid reply

So I'll have to download the newest drivers and reinstall.
Well, these peculiarities aren't very bad, just the ogl display is worse quality than on xp, and there are drawbacks in speed, for example when I orbit, it waits a while then starts orbiting, also when orbiting around 200k of polys (what is really not much) it doesn't work smoothly but jumps. In xp everything works supernice.

The memory overload is strange since I have 5 gb swap and my scene never got bigger than 2 million polys (I can check out exacly

)
It should drop data to swap space not crash.
My system is a strong M70 2.26 2gigs of ram and it handles almost smoothly over 4 millon of polys in max viewport, not to mention xsi.
Are there any hidden memory settings(not these in prefs)?

Peter

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Houdini Lounge » SUSE 9.3 file sequence managing slowness?


peliosis: 175 posts; Offline

Sept. 28, 2005 15:40:54

Another one on linux.
When loading file sequences into houdini I noticed the horrible performance drawback, no matter if I open it in mplay, file COP or anywhere.
As soon as I click on the folder containing the sequence (22000 tgas in this case) I can make myself a coffee, drink it and let it out.
Also the playback is far worse than on windows.
In windows I'm able to work with cops very fast, in SUSE no.
The same is everywhere as I noticed later, no matter if it's houdini or file explorer, opening the folder takes 15 minutes.

Maybe the problem is with the file system. I use FAT to keep the OS compatibility, can this be such a drawback.
On what filesystems should we store video data in linux (ext3?)?

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Houdini Lounge » SUSE 9.3 graphics question.


peliosis: 175 posts; Offline

Sept. 28, 2005 15:32:12

I was a great suse fan when I used geforce Ti 4600 on my old machine.
I had standard drivers installed via YOU (nvidia display driver) and quality/performance was superb when compared to windows.

Now I have brand new M70 with quadro 1400go, installed the same driver using automatic update and the result is worse than in windows, there are some artifacts and viewport operations aren't as fluent.

What drivers are you using with quadro on linux?
Are there any settings to adjust?

I'm also a bit upset about houdini stability…the newest apprentice hangs whet I overload the memory, no matter the OS.
As soon as I copy a few (2 up) millions of polys I get segmentation fault, is it normal.
Iremember about swap/virtual memory, there is always enough.

Thanks

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Technical Discussion » Stamping chop animation?


peliosis: 175 posts; Offline

Sept. 27, 2005 19:15:32

Thanks, this is an old message, I figured it out some time ago.
Stamping just works, I used param also because it doesn't force you to specify the copy sop.
I had some problems since these were my first days in chops.

Thanks for you replies.

Peter

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Technical Discussion » CHOP exporting question


peliosis: 175 posts; Offline

Sept. 19, 2005 12:18:30

Hurrah,

Thanks guys! It works now and I have a few comments:

The channels had proper names (the OP names was set by default)

Yes, Jeff that's the case, I animated sops in the object and just wanted to stretch or warp the animation.

I created a fetch chop and connected a stretch chop, to keep things easy for testing.
I heven't locked any of them since I didn't know it was needed, I thought chops overrides keaframe animation without creating a loop.

If I wrote correct export prefix in stretch chop ( /obj/myobj ) houdini hangs immediately.
I solved it by attaching a null chop at the end and typing the same prefix!

Then I read Jeffs notice and found that after freezing fetch, exporting from stretch chop works just fine (without any null)

So finally after a long time of testing and restarting crashed houdini I'm home.

Thank you very much!

Peter

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Technical Discussion » CHOP exporting question


peliosis: 175 posts; Offline

Sept. 19, 2005 06:52:17

I'd like to export it to the very same object:
fetch channels, massage, export back.
I thought houdini should do it automatically, but somehow it doesn't?

The object is build of many many sops plenty of them are animated.
I want to change them alltogether (stretch, scale, trim… anything) using chops, that's all.
Do I really have to treat them all separately? Sounds unbelievably.

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Technical Discussion » CHOP exporting question


peliosis: 175 posts; Offline

Sept. 19, 2005 04:29:02

I fetch all animation from an object contained of many animated sops,
I have some problems reexporting them back after some changes done in chops. I tried different paths in last chop in the network, and attaching export chop with * in channels and in path.
I tried many different settings with paths without success.
Is it possible in the way I'm trying or should I export everything separately

?

Peter

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Technical Discussion » Stamping chop animation?


peliosis: 175 posts; Offline

Sept. 13, 2005 16:31:53

Can we stamp chop parameters to have different animation for each copy?
I created an object, animated it's xform (sop level) and copied along a path in another object.
Then I created chop network (anywhere you like) fetched the animation, massaged and tried to stamp some parameter of that massage but it doesn't seem to work.
Do you have any clues? Can we copy stamp chop animation parameters?

Peter

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Technical Discussion » Trim CHOP question


peliosis: 175 posts; Offline

Sept. 9, 2005 16:11:36

Thank you very much for the instructions, it works great, but
I'm a beginner especially in chops, and I have another question…
I needed the trim to create a reference for stretch chop.

I'm looking for a method to copy custom (prepared keframe) animation using triggered copy, but each of the copies have to be of different length.

The length (stretch) of each copy needs to be controled by trigger length.
I can't find a way to do it.
I tried copy stamping stretch “end” parameter, using the trimmed channel as a stretch reference, but houdini stretched all of the copies instead of one.
I spent some time on it but I still doubt in my chop knowledge.
If you could be of some help again, I'd be very grateful.

Thanks

Peter

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Technical Discussion » Trim CHOP question


peliosis: 175 posts; Offline

Sept. 6, 2005 17:35:53

Is there a possibility to trim channel at current value (using expression)?
For example to leave only data with values between 1 and 2.

I'm trying to make an animated reference for copy stamping stretch CHOP parameters.

Thanks

Peter

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Houdini Lounge » Legacy Tutorials


peliosis: 175 posts; Offline

Sept. 5, 2005 10:46:28

Come on guys, I'm sure somebody have them all downloaded.

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Houdini Lounge » Legacy material?


peliosis: 175 posts; Offline

Aug. 19, 2005 05:35:33

Does anybody know if there are legacy tutorials available anywhere?

Peter

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