there is a test about pyro with DOPs.

first version then trying make it better.

http://vimeo.com/4287557 [vimeo.com]

one thing i was curious.

I turn pyro to uprez, and I dont see any smoke and fire but timeline still simulate slowly.

where i done wrong?

i use lowrez it's ok.

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I show some album about this topic downstair. it will continue to update.

Before you do the up rez, you have to save your low rez sim to disk (go to the low rez geometry container and in the dop import, render out the low rez sim) then go to your dop network and switch to up rez, and hit play.

I'm having the same problem, and more.

I'm new to Houdini, and have Maya & Max burned into my cerebum, so I'm possibly getting making very simple mistakes.


Following the Pyro FX tutorial video I too get no Upres version of the lowres pyro. I've rendered the lores to disk cache, and changed to Upres in the switch node… the first frame appears correct, but the following frames are no different; there's no combustion (that's how it appears anyay), just that glowing sphere…

I do have another issue which may or may not be related: Houdini isn't loading the cached pyro files. Load From Disk is checked in the Pyrofields node params, but it insists on rendering out the simulation when I switch back to Lores after rendering the Upres. The cache files are rendered in sequence ($F) so it's not that…?

Using a mac (OS 10.5.6) the cache files will only render to dfx, whereas the docs (indeed the default file fields) talk about ngeo and geo… I assume this is normal and they're just not updated? It won't actually let me specify an ngeo extension.

Any and all help appreciated… This feels like a lovely app and I can smell the power, but right now it feels like I've stepped through the rabbit hole and forgot to bring a torch

set the display flag to upres node?

el_diablo
set the display flag to upres node?

Yep.

Reviewing the tut video again, one thing I notice is that my uprespyro node is decorated with black & yellow hazard lines, where his displayed normally… does this mean anything?

Try to middle click the node for info, it may help.

Ok that was strange.

I resolved the file format issue at least by setting HOUDINI_USE_NATIVE_FILE_CHOOSER in the environment file.

No idea why, but this had two side effects (pun not intented):

- Upres works now - and the uprespyro node is no longer harzarded out, so that's clearly a bad thing to see.

- Playback is vastly faster on cooked simulations.


Unfortunately when I switch back to lowres it still insists on cooking the DOP Network, instead of loading the cache. So any ideas on this still appreciated!

Cheers

“black & yellow hazard lines” are Houdini's way of giving you a warning that something is/or might be wrong///whenever you see this on a node MMB on it and read the popup…

I notice another sample way.

I choose the pyro node( not uprespyro node), then turn up the “uniform division” to the same number of upres's.


Then I got a good result of it.


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about cache lowrez:

I have to create a ROP Output Driver to cache it, isn't ?

or other way?

The help talks you through all of this. You can search for ‘pyro’ and the first entry is quite a detailed walk through. I would take the time to read this as it explains quite a bit.

Cheers,

J.C.

http://vimeo.com/4313485 [vimeo.com]

new version here, render for almost 10 hrs.

I think this version is kind of good.

http://vimeo.com/4334933 [vimeo.com]

I try to add a force to simulate the rocket launch.

It simulates about 4 hrs. Nice quality and cost.

Trying to do more test then make a demo reel.