Break Your Crayons is the artistic name for the work of Marc Whitelaw. A senior digital artist working in the vfx industry, creating digital art and educational content.
why my smoke density is thin in karma i set high value in pyrosolver pyro bake and karmapyromaterial but when render the smoke is thin is not thick like your cloud any idea pls
The first extended Houdini tutorial series that I followed and recreated alll the steps. Most of the things Ive learned so far was from this series, but I had to find some hacks to make it all work in Solaris, so this 4h series took me about 4 day to complete, to sort evertything out in LOPs, using a USD semi-correct workflow, using Karma XPU and materialX. Thanks a lot!
Great to hear! Very cool to know you were able to recreate it in Solaris 🙌🏻 it’s so great to have Karma now which is much faster but similar to Mantra :) thanks so much for sharing!
Hi this is really good demonstration!! Can you give me hint or explain on how about making making a whitewater render in karma xpu? I am using pyro shader in material library in stage context but unable to get the reflection for the whitewater? please help
Just to clarify the extinction-falloff, it's not modulating the density by ray depth. It is adjusting the extinction coefficient, biasing the falloff of energy, in a dance with the bounce limit + the start level. In plain terms, it is biasing the energy falloff that should occur inside the medium, and producing brighter values where you'd normally need 50-100 volume bounces to achieve. It is a non-physical hack.
Breaking the volume bounce limit expression breaks the weighting for the extinction, I am not sure that's a great idea. Also, setting the volume bounces globally means every volume you render in that render pass will inherit it regardless of extinction weighting or if you wanted for example no bounces on a specific volume.
Great work! Can I ask how are you able to preserve big shapes while also keeping small details. Is it no turbulence and just disturbance based on density? Or maybe vel? Mine just turn into disorganized mess. But then again, I tried with axiom cause my pc dies with pyrosolver
Hey Dennis! Yes, fine details are created by a lot of disturbance. Disturbance is confined to small surface areas and turbulence forces affect the entire sim as a whole. Turbulence change the entire shape over time and Disturbance just affects the area where you want it. A cover it a bit better in my course but it’s all Pyro. I haven’t used Axiom all that much but I would crank up the disturbance if there is that control 👌🏻
Hey hey, if you are referring to the ActionVFX website, it’s just a turntable. Still images with a camera rotating around 😅 rendering real-time on a website would be crazy lol
Still using Blender :) but currently doing a project completely in Houdini to see the difference. I still think Blender looks better but Houdini can do something’s that Blender can’t. There is a nice update in Blender 4.1 that will fix some issues as well. Blender is amazing, I really enjoy using it 🙌🏻
@@christianvolkner2028in short, I feel Blender resolves details better. Karma has to work a bit harder to get the same amount of detail… BUT Houdini offers more options than Blender in terms of AOV’s and in my opinion looks more realistic. I’ll do a render comparison between the 2 and maybe do a video showing my findings 👍🏻 good question
@@breakyourcrayons I use them both quite regularly. When it comes to metals, sss and refractions especially I feel it’s quite the opposite. But interesting nonetheless. I look forward to your test :-)
Thank you soo much for this !!!,I have a small doubt tho, is there a way to render multiple render nodes in karam like we can do it with mantra where we can chain all of them and click on last one and it will render all the render nodes together ????
I’m pretty sure this is possible but you have to set it up in TOPs I believe. I know we did this in production. I’ll have to chat to a friend of mine and see how he did it 👍🏻
The assets on my Gumroad are static. The animated caches are too big to upload there unfortunately but the course on my website shows you the full simulation process if you are needing animated versions 👌🏻
Hey! thank you so much. I've come from using htoa(arnold) and it did work. If there's anyone here coming for the same but for htoa, try to go even beyond from -0.25 on the offset. On my case I had to lower it until -0.9 to make it work. Thanks dude, much appreciated.
i'm in blender 3.4 and all looks great in viewport render, but then the actual render looks like the density has been crunched right up and its got those voxel blockyness --- desperately need help lol - I DMd you on insta also
Hey, sorry to hear it's giving you issues. Seems like it's a blender issue as open vdb files are universal, have you submitted a ticket to them? I'm using Blender 3.6 here have you tried that version?
Hey bud, I just installed Blender 4.0.1 and everything is working fine on my end. I’m happy to try troubleshoot things with you. Is the error happening on import? Or at render time?
Hmm..I thought I have answered this already, but seem to have vanished. Anyway..sure it is, but don´t render with houdini, export VDB and render in blender..that´s the only way, if you persist to render with houdini apprentice, then there´s no other way around it than getting a license, indie license will probably do for many cases.
This looks really good, thanks for sharing. You should turn on node wrangler addon that comes with Blender, it makes working with nodes in Blender really fast and intuitive. Things like adding texture coordinate and mapping can done with just ctrl + t.
@@sander-wit I think the bounces are necessary for the light scattering inside the cloud but with a high number, you'll see the diminishing return soon.
@@sander-wit it all depends on your scene and what you can get away with. Clouds need a lot of bounces for accuracy BUT you might not need all of them depending on what your lighting looks like 👍🏻
I wish the texture coordinat and mapping was built in to every fractal texture, you can skip bother about node wrangler and ctrl-t and mess with that. In Lightwave 3D, all fractal textures has that built in, projection, coordinate positition and scale etc, and when you increase a value in the scaling, it actually scales it up, not the other way around as with blender, that is awkward.
Looking awesome, especially the simulation. And yep, Samuel Kruger have done some extensive testing on shading it within Cycles, it looks good here as well, to. I usually try and stick with the principle shader though, and instead of the density channel, feed light paths to the absorption channels and adjust that, sometimes I feel that looks just as good.
I’m my experience, blender cycles renders the best clouds. It has the most control and the speeds are quite good. I believe redshift has updates in progress to give us more control but at the moment I’ve been very impressed with Cycles.