Particle Hair Pipeline Tips

[@publicalias8172]

thumbnail almost had me thinking you become a barber and this was a vlog till I saw the title.😂 Looks great though, unreal never ceases to amaze.

[@CraigPerko]

It does have a few capabilities, yeah.

[@Tenchinu]

amazing video!!that vertex decimetor bacilly saved my PC from tuning into a molted, hot pile of magma. How do you put two different hair particles in one model tho? :( I have my eyebrows/eyelashes seperate from my hair in the particle system, and I dont see a second option on the mesh to place a second hair in it. kinda wanted it to look like yours, which has the eyebrows and hair there, but you managed to just switch the hair

[@CraigPerko]

I'm not sure, because I'm using texture eyebrows for now. I didn't like the way particle eyebrows and eyelashes looked.

[@alicevescio7203]

Hi!! great video, thanks a lot! In your opinion, is there a way to use the same pipeline from blender to Ornatrix in UE?

[@CraigPerko]

I don't know Ornatrix, sorry.

[@alicevescio7203]

@@CraigPerko thank you anyway :)

[@klikkolee]

unreal's hair was one of the deciding factors for picking unreal for an upcoming project. the other deciding factor was being able to make engine modifications, which will be important since the unreal hair physics appears too limited for my use case -- only being able to collide with the mesh the groom is attached to. I'm not surprised by that limitation -- most games do not require you to be able to pet a fluffy thing with realistic fur response.

[@CraigPerko]

Well, if you just want a basic fur displacement for petting, you don't have to do any engine modifications. You can just create a displacement effect within the hair shader. If you want to do full long-hair collisions against multiple meshes, you still don't need to do engine modifications - the hair physics can be overridden on its own. You just select your algorithm.

[@ricouseofficial4377]

Hey, great video ! I do have a question though. I'm trying to fix the noisy shadows coming from the Hairs. Did you found anything about it ? I tried to look on the forums to find a solution but still nothing. I hope you can help me ^^

[@CraigPerko]

There are a few settings for the shadows in one of the asset settings tabs. For example, voxelized shadows. Have you tried playing around to see which one serves you best?

[@ricouseofficial4377]

@@CraigPerko Yes, I tried with a little bit of everything, voxelized removes the shadows but it's the option that affect them the most so, It's a step forward. One of the other thing that I tried that affected them is the anti aliasing but it's still very noisy even with the max settings. I'm sure that I'm missing something but what... idk... ^^'

[@CraigPerko]

@@ricouseofficial4377 The only other thing I can recommend is insuring you're not using an older lighting mode in the project settings.

[@ricouseofficial4377]

@@CraigPerko I checked and It's using Lumen so don't worry I'm going to go with a more "Blizzard" style for my character using curves ^^ Thank you for the help and have a great day ! ^^

[@NeoShameMan]

Still can't get cg afro textured hair anyway 😣

[@CraigPerko]

I certainly haven't figured out how, although I'm not any worse at it than other kinds of hair.

[@NeoShameMan]

@@CraigPerko it's more the soft than you, I spent the last 3 years trying to understand why, and it's only now I figure out the fundamentals of that type if hair, so far I haven't see tools that help people do it properly, which mean no one using the tools vanilla can do it. I create a chart with two axis, diffuse and stress, for afro type of strand, with stress being a multi dimensional parameter (shear, elongation, flattening) and stress vary along a single strand, and diffusion is how strands aggregate together in a region of the scalp. One big overlooked element is spiral perversion events that change the spiral direction and affect how the hair look, there is two type of spiral perversion, a strand can have multiple events along its length. Afro strand curl because of the elliptical cross section, unlike flat hair which is round. Elongated strand have torsion along the length that break specular, the torsion became crinkly after being ironed. That lead to various specular glitter effect. This is why it's hard to make that type of hair, the tool don't support the specificity of the hair, and knowledge about it isn't told about. If you find a way to decently approximate it, good job. It's not impossible but it will ask for lateral thinking.

[@CraigPerko]

@@NeoShameMan I'm not the guy that's going to innovate hair sim. I can barely get it to import. :D

[@NeoShameMan]

@@CraigPerko Yeah that's why I have to lol else nobody will start, you are probably further along me in tools use and export anyway, I'm only coming back now after I tested 3 years ago.

[@kalubandali2241]

thank you

[@n3onkn1ght]

"I have a problem: I want to learn how to edit particle hair, but I'm missing a clear, concise video about how the settings work." --> Craig Perko posts "I have a problem: I don't know how to post an anime thumb's up meme in a KZbin comment."

[@CraigPerko]

If this counts as concise, you are a patient soul.

[@NeoShameMan]

@@CraigPerko that tells how much worse over are, that was quite to the point!

[@n3onkn1ght]

@@CraigPerko The _advice_ is concise, even if Blender has a lot to unpack. I never figured out how to use the default "path" edit mode, but after you bluntly stated it's completely fucking useless, now I know why.

[@CraigPerko]

@@n3onkn1ght Yeah, I honestly don't know why that mode is the default.