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Now that we've got the formalities out of the way, I've been having a nightmare of a time matching Karma renders in the viewport / mplay. The ACES transform from ACEScg just never looked right, colours ended up too saturated.

But I've cracked it for davinci resolve. Use EXR output:

Houdini Settings:
Edit > OCIO Settings > ACEScg
(Setting this to acescct fucks up the viewport)

Karma Render Settings
Image Output > AOVs > Component Level Output > Output Colorspace > ACEScct

Resolve Project Settings:
Pic-related + in the colour page, project nodes add an aces transform with the following settings:
- Input Transform: ACEScct - CSC
- Output Transform: sRGB
This will let you mess withe gamut compression and do post-srgb changes

This will exactly match what you see in houdini.

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>>996209
Only with the power of Houdini will Cris finally be defeated.

>>996210
Yeah you could do all that but I am able to match the mplay by just adding a brightness/contrast node in fusion and turning up the gamma a little bit.

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>>996470
i like rendering in aces
i like importing straight to resolve
i like grading in resolve in a log space

>>996470
When rendering straight to disk with a rop the EXR's need to be transformed using linear rec709 by default instead of AP1/AcesCG or what have you. It then should match straight away.

>>996502
Alright I will try it.

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https://www.enoni.de/wp/pbr-5-layer/
free cops pbr layering hda (fx compatible)

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>>996209
Does anyone have some good resources on how to shade and render pyro fire and smoke in solaris karma? I tried to make this shot but dont know how to make the fire at the end look like smoke instead of fire.

>>996209
Is a Houdini General really warranted? How many people on this board have ever even opened it?

>>997183
it's warranted. The thing about houdini though is that you have to have a pretty sky high iq to make use of it. Most people that can say sort of use it just end up making useless shit and/or trying to sell equally useless courses on it. Or, even worse, they end up trying to answer questions on forums or discord all day but they don't know why they cant make a sim that is actually interesting

>>996824
https://www.sidefx.com/contentlibrary/flame-with-smoke/

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Karma still isn't gold enough

Does anyone know how to add anything to material databases in Solaris? You can see them in the material linker catalog tab. You can create custom DBs, but I have no idea how to actually add anything to them. There are no docs and nothing useful on the discord.

>>997241
It's paid for my license a few times over tho I quite enjoy it. I've finally gotten a bit of a handle on Solaris too and it's cool as fuck hitting render on one thing and seeing a bunch of passes and cameras exported on the morning

>>997252
I agree, it's still sweet at moment regardless

>2024
>people still using houdini for rendering when Katana exists
>people primarily posting about Karma in this thread and not about simulations

why is this?

>>997592
make a katana thread if you want to talk about katana, bro.

>2024
>People talking about Houdini in a Houdini thread
>why is this?

>>997592
houdini + redshift blows that shit out the water regardless

>>997635
i get the best renders from prman honestly and i hear 27 next year is going to be insane

>>996210
why not use AgX

>>997736
Not him, but use khronos

>>997736
renderview is too flat for me and i don't want to fuck around with slapcomps just to have a good starting point.

>>997737
i haven't seen a working implementation in houdini yet. i do want to try it though, it looks good.

>>997736
>>997737
>>997824
AgX, Khronos, ACES, blah blah blah. It doesn't matter when doing real projects, only side by side comparisons, so just pick the one that's the most comfortable to you and your workflow for now

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Trying to make a hurricane with pyro. How can I make it looke less like smoke and more like hurricane mist?

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>>997833
Here is one made with volume vop (no sim)

>>997833
>>997835
applied houdini pyro 5 has a no-sim approach
houdini course pyro section has a couple of sim based approaches

>>997837
>volumes* 5
he changed the name at some point

Does anyone know how the hell I can get points scattered as a volume on a deforming mesh to not jump around like crazy and change their point numbers? Time shifts and rest nodes aren't doing shit. I just want to use this running character as a pyro source and have the points stick in one spot- so I can drive a certain degree of the smokes velocity using their normal direction

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>>997864

>>997867
Thank you!

anyone happen to own the Steam version? asking because I will eventually buy houdini indie and I happen to have a ton of steam cash from when I played CS and sold my skins. I'd rather just use that to buy it but if there are bugs or differences then I'll just shell out the money for indie separately

>>998315
Unless you plan on making money with houdini I wouldn't bother buying any version. Apprentice has very few limitations, the biggest one is that you can't install any third party renderers. But karma xpu is great so I don't really see the need for this anymore. Also houdini is easy to crack if you really want to..

Personally I don't own a commercial houdini licence, the studio I work at buys it for me. That being said, stay away from the steam version. Version management is a pain and you can only have 1 houdini instance launched on you PC at a time.

>>998426
You don't get it. For one, the value of paying of having a legitimate sidefx license comes from the support and the scene files YOU have to send in to receive support. Just in this past month I had to email side 2x and they solved my issue in multiple lengthy emails and example scenes that they provided me and even let me know in advance notice about upcoming things they are going to be releasing that relate to the issue.

Two, using third party addons is actually a must. Karma isnt the be all end all, either.

Sounds cool!

is there a catch with the free version of Houdini?

>>998658
renders are limited to 1280*720
no third-party renderer support
no geometry sequence export iirc (technically no geometry export at all i think, but you can get around it, but it would be tedious for exporting sequences)
if you buy a license, then open a file saved in apprentice, it'll temporarily make your houdini session an apprentice session - saved files need to be converted, sidefx will do this for you once. there is a bit of a hack around this but it has some minor limitations (nodes inside sop solvers won't migrate properly, neigther will sticky notes iirc)

what is everybody learning?
APEX?
MPM?

>>999064
The only thing that matters : Vellum

What format do you use to import characters from blender into houdini? FBX or what??

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>>999152
fbx is ideal since you can still mess about with the skeleton/animation. use the fbx character import node and set it up like pic related.
if you just want the baked animation, then it doesn't matter, use alembic or some shit.

>>999154
also, if you do want the skeleton and you've set up the chat with rigify or w/e, when exporting to fbx there an option to export just the def bones - i remember having to fiddle with those options, although i can't remember specifically what steps i did. should be easy to work out.
do that or you'll get a big giant mess that you can't work with.

>>999155
Yeah, the models in question do use rigify, so I'll probably have to figure some FK stuff out in a bit, but I have the model, the IK rig atleast, and blend shapes seem to be working, so that's good.

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>get opencl errors constantly with vellum
>update nvidia drivers
>doesn't fix anything
>disable gpu for opencl
>go to render with karma xpu
>all ambient occlusion is now bright teal

>>999252
>ambient occlusion
diffuse/spec secondary bounce*

>>999252
use DDU. Also, have you tried another video card? Cards dont last forever

>>999254
i just rolled back to an earlier version.
565.90 studio is the one doing the teal shit with houdini 20.5.332. 560.81 studio is fine.
i can't even be bothered to fix the opencl errors with vellum; it's probably an edge case and there's barely a speed gain anyway for my project.

>>999257
thanks for the heads up about 565.90. I dont have time to stop producing and mess and troubleshoot with faulty "studio" drivers that MUST be released every X number of weeks. There is almost nothing worse than troubleshooting faulty drivers

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working on the soccer ball tutorial from sidefx website

Does anyone else feel like they're perpetually at 70% with everything they try with this software? At this point I get the basic jist of how to do most of the things I think of, but then I either hit some wall that brings all of the experimentation that came before it to a complete halt, or I just get stuck with a shit version of the thing I was imagining, that's everything I was trying to make it be, except it looks like shit.

>>999510
No. If i come to a complete halt after exhausting all possible learning resources then I email side and give them my scene and tell them what I was trying to do and wait for their response

>>999257
they have an official statement on 565 in the forums now, talking about the issue with XPU and optix. They say not to upgrade for now...

>>999684
lel. i thought i was losing my mind when it happened to me. hopefully it gets fixed by the time i update in ~6 months. inb4 this turns into a redshift memory leak nightmare.

I've a final project to do in 7-8 weeks and now we're off the rails from traditional assignments and I can't recite a single thing I've learned. It's over!

>>999730
Whatcha gonna make anon?

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>>999761
Probably not interesting, but procedural symbols/text like the runes in Diablo 2. Then I'll try to arrange them in animated circles and ribbons for a "magical circle" type thing swirling around the character.

>>999765
Sounds fun t bh. Let us know if u get stuck on anything

>>999765
that sounds super boring, not gonna lie.

>>999788
one man's symbol generator is another man's viscous googirl dripper

>>999791
do something actually worthwhile

>>999792
Bro we make pretty pictures, calm down. If u wanna do something worthwhile go cure cancer .

>>999827
there's a range of things that are worth doing in any activity

>>999832
keep telling yourself that, pixelmonkey

>>999835
you are the one literally taking a course and paying money to make a really weak project

>>999838
you can't even keep track of who you're talking to lol

>>999839
yeah because everyone is posting under anonymous and even if they're not i have "forced anonymous" on in settings

who would have thought that

>>999842
don't speak to me (mr anonymous) or my son (anonymous) ever again

>>999835
post prog

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I have a challenge for ya'l

Suppose I have this shape. I want to duplicate this shape dozens of times and scale it inwards, and have each smaller copy nested perfectly inside the larger copy. But the vectors don't want to let me do this. I get this crap instead. What do I do

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everybody making houdini courses but there are no jobs

end stage capitalism

>>1000070
polyexpand2d should do this

>>996209
What is this? It always pops up when I launch Houdini
>>Prelaunch pb? 1

>>996209
shit ui and sluggish performance. i took a month to really learn it and found out its just easier to work in a general 3d package with similar results. if you wanna do extreme high end sims, sure. but general use from renders to shorts, not worth the headache.

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>>1000105

Failed to process triangulation. See helpcard for possible causes.

Don't see anything relevant in help, Tried remeshing and quad remeshing first and didn't help.

Here's another problem- I want to project an image onto some vellum grains and have all my forces jumble those grains around, breaking apart the image and making the black grains get mixed up and lost. But I can't seem to get the Cd of these points to become independent of the projection- so the grains move around but the image continuously projects onto them in the same way. How can I bake the colors onto the specific grains so they stop doing that?

What I'd really like to figure out is how to bake an image, have the simulation shuffle them around and end with them arranged into a different image

>>1000176
you shouldn't need to do an attribute transfer at all. once the points have the attribute pre-simulation it should 'stick' through the simulation.
if for some reason it doesn't, attribute transfer won't help. attribute transfer is proximity based.
what you want is an attribute copy based on point numbers. i think in this scenario if you run it naively it'll work.
ideally you want to keep track of points not based on point numbers, but based on id's just incase the point numbers get shuffled around (vellum will do this for primitive numbers all the time iirc) or if new points are spawned.
usually this is done with an @id attribute and some schema to ensure that point numbers remain unique.
however, you can't assign @id prior to a vellum simulation because the vellum solver needs its own @id attribute to keep track of this.
i usually just use i@pt_id as a custom id attrib and then shuffle it around for idtopoint() lookups (that function only works for @id attributes.

re:failed triangulation, i'd need to see the actual geo, but desu i'm going to be slammed during the week so i doubt i'll be able to help.

for the image rearrangement thing, i'd have to think on it. again, i won't be able to really spend any time on it. but the idea would be this:
1. precompute the second projection and store it as a point attribute
2. maybe randomize point order and project based on that
3. inside the vellum solver you can then use an attribute wrangle to just move towards this stored position. so if you've got a precomputed position stored as v@precompute you can just use a wrangle inside the solver and do something as simple as v@P = lerp(v@P, v@precompute, 0.05) and it'll move towards the position 5% per frame.

>>1000186
oh also, you can just 'cheat' the rearrangement but just lerping @Cd. if you do it cleverly most people will never notice that you just blended from one colour to the other.

>>1000165
nah

>>1000165
lol

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>>1000165
show your work then, coward!!

>>1000093
just wait until you realize that most of them don't even work in any industries.

>>1000614
Mate, the Industry has completely collapsed. Are you living under a rock? The movie industry? Gone. Direct-to-dvd? Gone. App industry? Dead. VR apps? Dead. All you can do now is try to gain social media clout.

>>998660
I see, so it's really mostly for learning. You can't just use the free version for years and then buy one month of a real license and then use the stuff you've made in the free version commercially.

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>mfw constantly frustrated by the guide partition node and only just realise that no one uses it for actual parts in hair and that i should just break the groom up into sections

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I'm not a good coder bros, is there any hope for me?

>>1001962
The time when one need to be a 'good coder' is nearly over. We will very soon be programming in natural language in such a way that everyone will be a programmer.
Once that happens in no time AI will write for us in machine code that'll be ineligible even for expert humans to interface with directly.
It'll be more impractical than reading large programs viewed as assembly code.
We will be reliant on AI interpreters to map out what a program actually does in metaphorical ways that is eligible to us.

In that near future your ability to be creative will be gated more by your ability to be highly specific an concise in describing things
while talking to a LLM than you will be dependent on knowing the ins and out of syntax and how to write efficient and clear code.

Anyone who's anyone in programming has stopped saying we should be teaching kids how to code, because that skill will be irrelevant.
Growing your vocabulary and understanding of higher order concepts will be the success path going forward.
What you can contribute will be gated by what you can express thru your command of linguistics and what you can conceive of as cohesive mental constructs.

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>>1002005
But it's not here yet. I interacted with 20 chatgpt solutions (paid model) and they all failed (or my descriptions did), and so I have to cope with my poor abilities in the now.
I get time's will change, and I'm looking forward to those times as an artist.

>>1002009
Chatgpt is good for houdini's python stuff but mostly miss for everything else.
Btw if you want to copy different objects per point look up the attributes from pieces node and the variant copying workflow in copy to points. I think there's a nice post on the toadstorm blog about all the ways can do it now.

>>1000616
so what's the point of learning Houdini then?
somebody's learning, course makers are making bank.
why are they learning Houdini, why?