Introduction to UDIMs in Blender
Вставка
- Опубліковано 20 чер 2024
- In this video, Juan Hernandez gives an introduction to the UDIM workflow in Blender, for getting more texture details on your 3D models. We will take a look at the basics you need to know, to properly understand this technique, with practical examples of how this can be useful, and when other solutions can be more effective.
COURSES & EBOOKS
⇨ Blender Shortcut PDF (free - email required): bit.ly/cgboost-resources04
⇨ Blender Launch Pad course: bit.ly/b3d-launch-pad04
⇨ Cubic Worlds course: bit.ly/cubic-worlds-3
⇨ Master 3D Environments in Blender course: bit.ly/b3d-environment-course04
⇨ Substance Painter Launch Pad course: bit.ly/substance-painter-course03
⇨ Blender Secrets E-book (affiliate): gumroad.com/a/436106355
LINKS
⇨ Juan's Artstation: www.artstation.com/donchuan3d
CHAPTERS
00:00 - Intro
00:18 - Video overview
01:31 - Theory
04:08 - UDIM setup
05:53 - Layout UVs
06:30 - Organic models
08:29 - High poly models
09:48 - Easy material editing
10:51 - Unplanned changes
12:25 - Painting setup
13:11 - Blender setup
14:30 - Texturing softwares
14:43 - Substance Painter
15:00 - Quixel Mixer
15:31 - Substance painter launchpad
15:51 - High frequency details
17:04 - Procedural shading
17:55 - Too many UDIMs
18:28 - Movie examples
19:24 - UV checker
19:45 - Outro
JUANS SYSTEM
CPU: AMD Ryzen 9 3900X 12-core processor
GPU: Nvidia RTX 2070 Super
RAM: 64 GB
FOLLOW CG BOOST
⇨ Facebook: / cgboost
⇨ Twitter: / cgboost
⇨ Instagram: / cg_boost
⇨ Web: cgboost.com/
#b3d #texturing #udims
If you can't find the "UDIM grid" in Blender 3.3, it's moved under the overlays dropdown menu along the top tool bar (icon for it is 2 circles overlapping each other)
Thanks for the update
THANK YOU :)
Thanks for the info, though i still can't find it in overlays dropdown menu either :( using Blender 3.4.1
@@da_drood-digitalart Yeah no kidding. I'm on Blender 3.3.1 and have the same issue where the UV Grids options aren't available. This isn't too much of an issue for me, because I'm importing a model that already has UVs laid out in UDIM space, but I'm concerned about being able to bake textures.
Make sure you are in the UV Editor (accessible in each area from the top left drop-down in the header). In the same header menu, the "Show Overlays" drop-down is on the extreme right. If the window is small, you might have to horizontally scroll while hovering with your mouse wheel to see it. As @mitchf.6990 noted, the icon is 2 overlapping circles. Inside the drop-down it it simply called "Tiles X" and "Tiles Y" under the "Guides" section. I hope this helps people find it.
This solved me a huge problem , I have some high poly models I did for a client. And since it's a whole mesh because it's for 3D printing I get a hideous resolution in substance, 650k-1m polys in a single 4K texture doesn't look very nice hahahah , this way I can finally share my models without having to create procedural materials with nodes , thank you!
Awesome, glad it helped! - Juan
I needed this a month ago and had learn it, took some time though. Looking at this now i am sure it would be helpful for those who are starting to look into UDIM.
Great video by the way.
Very informative, great presentation. Thanks Juan and CG Boost Team!
Your video explains so much. This is a wildly efficient method of texturing according to level of detail. Thank you!
Clear, succinct, informative, comprehensive. Outstanding tutorial. Thank you. :)
A one stop UDIM shop. Thank you, very much. I've not used them since 2011, so the recap was very helpful.
THANK YOU SO MUCH! I've been trying to figure this out for so long. You are the best!
Thank you. This is very concise, organized, and covers all of the things I wanted to know!
Incredible video!!! Thank you very much for your dedication and attention.
Great and understandable video, thanks! And thanks for the tips!
Beautifully explained. Thank you.
OMFG, i've watched TENS of UDIM related videos, have read unreasonable amount of articles on this topic, but you're the only one who's explaining the actual reason for using the UDIM workflow, the only answer i got before is "it's kinda handy", which doesn't help at all. Thank you!
every time cg boost post something I learn something new, thanks cg boost
This is a great explanation, you're a very good tutor. Thanks!
Thanks for showing this very helpful video and happy blending with blender.
Very good explanations. Thanks
Fantastic tutorial, thanks!
UDIM workflows go back to the early and late 90s, actually. Weta Digital has been at the edge of workflows like this for awhile, since the original Lord of the Rings. Back then they used subdiv surfaces and nurbs with physical patches rather than UV patches. Those models had about a few dozen or so 2K patches, like the original Gollum from 2001 did. The V-Rex dinosaur in King Kong (2005) had about 250 2K textures per shader channel. For Avatar (2009) they created the MARI texture painting program, the shuttle in Avatar had 500 4K textures, just the fine displacement channel alone was 30GB of textures. Most of the creature and character models in Avatar had about 150 4K textures. These numbers have increased more since then.
I think it's good to use as many UDIMs as your assets need and not hold back. I'm working on a therapod dinosaur that has 570 4K textures per channel right now, for example, painting displacements of course (after Zbrush prep for alphas). I created a 3d moon model with 1,152 4K textures per shader channel in 2021, Renderman for Maya chews through that like butter. 200+GB of final textures just to render it.
Please provide sources for the information you provided in the first paragraph.
What a great, clear, and thorough video! Love it
Thanks for the comment, I appreciate it! - Juan
AWESOME!! I had no idea how to use this but thanks you guys I can finally use 1% of it's POWER!!!
Thanks man, quickly helped me out.
This is very helpful,thanks a lot
THank you ! this is unbelievably helpful!
best intro to UDIMS, thank you
Awesome! Thank you!
Excellent tuto!!! ❤
I just downloaded a model a few days ago and I was so confused why their UV's were set up off of the UV space. I tried to google answers but couldnt find one. Then I come across this video by chance... What a coincidence!
Great presentation!!!
2 years in blender and i’m just learning this now
In Blender 3.50, there is no more "UDIM" *anything*. They hid it in UV editor under the "show overlays" icon (far-right of the top bar, looking like two overlapping circles). The values Tiles X and Tiles Y control the UDIM overlay visibility. Hope it helps!
Thank you so much for the tip!
@@cgboost took me a full hour to find it. :P
@@CRogers totally feel your pain, had the same issue when the new version came out 😅
~ Masha
@@cgboost
Yeah these silly changes made learning blender feel like masochism as much of the learning material is different from the latest version
@@meh2063 I guess that's the price we have to pay for the fast development and all the nice new features 😅
~ Masha
Thanks for sharing it.
Amazing tutorial. You not only explain what UDIMs are but also go the extra mile to avoid us pitfalls and teach some extra use cases like displacement map or tilable micro details.
20/20 nothing to add.
We're glad you like it :)
~ Daniel
Awesome, thank you
amazing art
Ty so much! Best udim content to date.
great video man, thank you! no questions
Excellent video
Actually, great tutorials!
Omg… dude you are amazing. Thank you
Great tutorial, thank you very much! Could you possibly make a step by step tutorial how to set up and pack udims?
Good stuff! I could not understand the whole thing at once. I will watch it again.
Super useful 👍 thanks
Wow this is new, thanks
thanks bro I learned a lot today
i really loved the rigging system you have used for the creature any idea how to set it up
Helpful tut thx
Im starting to really deep dive in to texturing and rendering and this was super helpful. One thing that is unclear to me still is if I have one high poly model that is for a portfolio for example. A skateboard for example, and I want to show close ups of the decks wood and stickers and realistic detail. Am I looking at multiple 4k, 2k or 8k? Is there an easy way to test what is too much and what is too little? Great video again!
Really good content
excellent!
GREAT!
For those confused about UDIM locations, in blender 4 i found a bit more UDIM support under sidebar>image> source (change to UDIM tiles) and you can see them numerically laid out.
Thank you so much for the tip!
~ Masha
Thank you
We need a youtuber like you
This is very helpful
OMFG I wish I had known about this. Like why does no tutorials ever talk about this. Holy crap thank you!
Perfect, thanks for this mate exactly what I needed. Barely any info on working with UDIMs, some more on the Blender>SP work flow would be great as well.
Check our Substance painter course, if that fits your needs.
~Egon
@@cgboost Sure you have a link?
Thanks Bro
gracias de verdad muchas gracias
thankx
i don't understand any of this yet lol but once i am more knowlegable in blender this will be very helpfull thank you :)
Don't worry, you'll understand in no time... If you want to learn these things faster, follow the tutorial even when you don't understand what's going on, if you get stuck in any step, just ask around, in any group of blender users. That way you will learn everything a lot faster. =)
Same
😂🤣 p
Nice blender
Cool
Great video, learned alot, I'm using right now Blender and quixel mixer, but at the moment I import the mesh to quixel the part of "texture sets to UDMI" and "the button of "edit texture sets" don't appear, it's lke quixel isn't recognizing the UDIMs I made,....what am I doing wrong?
Bro that laiho signature is modeled to perfection ! Is it straight blender modeling or did you use something like plasticity ?
When is your Character Creation course coming out cant wait !!!!!
SAME
Please help me. I am a beginner in blender. Practicing on apple but in apple tutorial 4 he used a reference image of knife. To get this refrence image I visited the site whom link is provided in the description. But where is reference image
I think
Never
Hi! I'm aiming for this summer, hopefully soon we can release more info. Thanks for asking 😁 - Juan
omg thanksksksks
I have 5 uv tiles for my model and textured it in substance painter, How do I upload each of the 5 textures to each of the 5 uv tiles in blender?
Please making tutorial on character rigging
Amazing. If i set up udims will it automatically pull into unreal or do i need a special set up to bring in the textureing correctly?
As long as Udim workflow is recognized in the software of choice, it will work as it is, no special setup required. UDIMs tend to be used in VFX and animation rather than in the game industry. But nowadays with the power of Unreal, and how they try to close the gap I'm sure they are supported as well 😁 - Juan
@@cgboost thanks very much!
Was that the ESP Arrow guitar? Are you doing vfx for ESP? That would be really cool to hear about working for a client like this!
Yes it was! Never thought about it! I could ask them one day 😅thanks for the idea. it's my favorite guitar and I wanted to do a small animated project with it. - Juan
I am new for UDIM, what is the different between creating a new 1K texturemap and adding a new tile UDIM? Can I bake all out at once?
Besides, for any new tile, does the resolution is based on the parent texture map? for example I created a 1K texture image (tiled), so every new tile would be also 1K
Hi! Great Tutorial, is it possible to bake textures (for example material id) using udim with textools? I saw that textool recognizes the uv tiles which i created, but it only bakes the first tile.
Baking UDIMs is now natively supported since Blender 3.3.
Sir, your environment course will come in any discount? Any discount coupon for us? Please reply.
Hi, since the course is still in early access, there is a promo code listed on the website: academy.cgboost.com/p/master-3d-environments-in-blender/
Is there a good Blender Add_On to bake UDIM IDs, Occlusion, Normals, and Curvature in a few clicks?
11:40 You can update/ recalculate UV in Blender its simply baking option from one UV channel to another . It work beter in older version now is much more complicated .
Not every update is for better ;-)
~Egon
What's the difference between using UDIMs with using many shaders?
🙏
Hi! nice tutorial to UDIMs, plz let me know if it´s possible today in Blender 3.x series to bake UDIMs that contains procedural materials. thks
Yes, UDIMs can now be baked in the latest version of Blender.
@@cgboost Thank you
Hey, thanks for the great video! I have more questions about high frequency details section of the video tho. I am studying game development and we use Blender for modeling and Unity as game engine. Now I've run to this same issue couple of times. I have really high detailed objects that are large in size. I could obviously make a lot of udim's and then I would get the smallest details to show up after baking aswell. However with some of the details like the a noise bump I could just use a single tileable texture instead. How would I go about it in blender? I am used to make all my textures procedurally and the small details and bigger details are all in a single shader. I think a good tutorial on this would be extremely helpful for a lot of people!
Hi, not sure if I got what you mean, but even if the texture is procedural you can still bake it. Just make sure your object have uvs and you're good to go. And to bake just that little bump texture you can connect that directly to the material output node, bake it and then connect the whole shader back to the viewport again.
~ Masha
@@cgboost Unity unfortunately doesn't support UDIMS, so one has to separate the model into multiple objects.
in unity there is the Detail Map option.
Let's say I make a concrete wall, now I want to create a nice bump using normal. It's pretty high scale and repeats over and over again. Instead of baking the whole wall with this bump I could just bake a tile with the small details that repeat. This way I don't have to make a huge bage image (8k) for a large wall, so that even the small details is displayed with the base texture like color etc. Instead I can make a way smaller bake (2k) of the bump details that repeats over and over again as tiles in the wall. and another let's say (4k) texture for base colors and large details.
Im sorry that I can't explain it better. Hopefully this helps a bit tho.
Add multitexture, tiled texture in the name of the video so it would be more intuitive to find for those who do not know the actual name of this tiling.
Took me some time digging in forums to find that this tiling method is called UDIM.
#7 at 10:50
Perhaps I'm not understand how it's supposed to work in Blender but you can change tile size. In the Add Tile box, there are options to set width and height for each tile where you can set one to 2k another to 4K etc. Even if you set them all to one size you can unlink your current set, create another and point Blender to it.
Hi! Well the highlight of #7 is managing changes non-destructively. Yes you can alter tile sizes later in Blender but if you change UVs you have to redo your paintwork. If you go higher in resolution, you have to repaint or add detail, so technically you can just lower resolution, manually. In this example, I have a guitar, of 2 UDIMs and overlapping UVs. So I fixed the seams, unwrapped the whole thing. And instead of 2 UDIMs used 3. I put that back into my painting project and it recalculated everything automatically. That means I changed UVs and Udim count without losing my work. Which no general 3d package ever does for you. In Painter you can also work at 2k and export at 4k and strokes are resampled. In Blender or any 3d package if you work in 2K you cannot suddenly change to 4k and have your previous painted work converted to 4k. Hope this clears it out, Let me know! - Juan
@@cgboost Forgive me I'm a little slow. lol It actually came to me, what you meant by non-destructive, while I was out getting grocery. Thanks for taking the time and write a detailed explanation, btw. Also, awesome vdo on UDIMs; there are very, very few vdo on this topic for blender. Thanks, Juan!
Great explantion.
How can I unwrap directly to, lets say, Tile 1002 instead of 1001 and then relocate it to 1002?
Hi Constantino, thanks for your question, not sure if I got your question, but in blender previous versions (like the one Juan is using in this video) you didn't have the possibility to choose which tile to bake. It automatically baked the 1001 tile, that's why you had to do the trick to bake the second tile. You could then say to program which texture is for which tile by adding.1001 or .1002 to the title.
Now the things are a bit changed and if you add the second tile your output texture, blender will automatically bake all the tiles you have added.
Please let me know if this is helpful or if you have other questions.
~ Masha
@@cgboost Thanks, Its about unwrap, you mark the seams and unwrap the cuts, but what if I have Tiles 1001, 1002, 1003 and I want the clothes of the model to be placed in the 1003 tile without the need to move it manually?
@@eduarte0214 hmm not sure if there is a way to do this without having to rearrange the islands manually.
You can try to check if there is any kind of add-on out there, but normally you would need to do the process by hand.
Sorry if this is not helpful.
~ Masha
@@cgboost Thanks
@@eduarte0214 you're welcome!
I just found this video, I will check it out but before I watched this video, I did all of this things you've explained but still only my character head has texture. Though I am having a feeling is because I created color IDs... I am literally confused
is there a way to keep the uv dms when importing a modek back to Zbrush for detail projection?
I guess this should be possible if ZBrush can read UDIMs and if your export format supports UDIMs as well.
19:14 holy moly, 1000 UDIMs. Well, on the other side the Jaegers are gigantic.
Holy moly indeed! - Juan
Can anyone help me?? Whenever I make something in blender, then texture it with material. If I attempt to export the fax file to Unreal I get missing textures, they’re just gone. Anyone know what is happening?
Hi! how exactly are you exporting to Unreal? also how are you making your textures in Blender?
@@cgboost thx so much for replying, I just purchased the course and it’s awesome! But yes I am applying the textures in blender, I get them from textures.com. It’s weird though because the textures appear in the viewport of unreal but not on the actual item I import. Oh and the way I transfer it to Unreal is by exporting an FBX file then dragging it into the viewport of Unreal.
every UV grid can have its own image texture resolution or does it have to be uniform across the board?
Yes, every tile can use different texture size and this different texel density.
~Egon
@@cgboost thanks for replying! Really appreciate the info on UDIMs and textures. Helped me a lot!
Do you know how to export UV UDIM layouts? Image -> Save as only saves empty tiles without the mesh. Currently I have to place my UDIMS 1 by 1 at 1001 tile and export uv layout for each, which takes more time than it should.
As it stands, there is no way to do this without exporting the layouts one at a time. The blender developers are aware of the issue so hopefully it will be resolved soon :)
~ Daniel
I don't see the UDIM Grid dropdown under view even though I have my object selected and in edit mode. I'm using blender 2.93.2
Great Video/ Lesson! This is a method that changes the game
However, how can I export UDIM to software like Unity?(which supports Udim from the 2019 version...apparently)
Hi Nicola, you mean exporting the textures or the uvs? The textures once baked out of blender will automatically have .1001 .1002 numbers added that marks the tile they belong to. Now you don't even need to do the tile moving trick Juan shows, since blender has implemented the automatic export and detection.
As far as I know, the exported texture tiles should be automatically detected by any program that supports UDIMS. regarding the UVs they should be automatically exported when you export the model.
~ Masha
@@cgboost Thank you for the answer.
Basically now when I export I have a series of PNG called 1001,1002 etc and so far so good, the problem arises when exporting to Unity and importing the various PNG seems to read only one tile at a time and not in sequence as it should...
I hope to be explained ahaha
@@nicolamennillo Yeah I get it, thanks for expalining yourself.
Unfortunately, since I'm not familiar with the program, I can't really help you.
My guess is that maybe Unity needs a different title format to detect UDIMS properly, or maybe it doesn't support UDIMS at all. But these answers you can get from more experienced Unity users. Try to see if you find any forum specifically for unity users. I found this one that is for game developers in general, but I guess you will find many Unity users there: gamedev.stackexchange.com/
You can also try to post the question in CG Boost community, maybe there are some other unity users: community.cgboost.com/home
Sorry for not being super helpful, I hope you find the answer to your question.
Let us know if you figure it out!
~ Masha
ok i know what udim is but what is the workflow to deal with multiple obejcts, how many tiles do i nead, how big they should be? can i unwrapp all the textures and tile them automaticly with uvpackmaster? do U have any tutorial about it?
We might have in the future. It is true that there are more factors on how to use UDIMs.
~Egon
are UDIM's only useful for character models? I am building a house model? Does it make sense there?
UDIMs are a way to use more than one texture on the model (and thus have access to more resolution in the UV layout space for details - especially important for objects that will be viewed up close) - it does not matter if this is a character or something else. Characters (especially hero ones) are just more likely to be viewed in closeup shots - that's why for important and detailed characters UDIMs are often a necessity. You could use UDIMs as well for a house model. Alternatively you could make the house out of separate objects that use separate textures and UVs. The choice is really up to you and depends on your workflow.
What if im uv unwrapping a large 3D mesh such as a road.
I dont mind if the textures are tileable, but I need consistent texel density, and unfortunately because the mesh is large, it occupies morr than the 0-1 UV space.
This causes issues in baking since my UV shell spans across several UV sets.
What should I do?
I know i can scale down the UV shells, but then I would lose texel density.
You can try to create more Udim tiles to keep the resolution, maybe create a procedural texture and bake it. In this way you should be able to have proper uvs and keep the resolution consistent.
~ Masha
For some reason I always end up with visible seams between udims. Usually in the baked normal or height maps in substance printer.
Make sure to set normal maps to OpenGL when starting a new project, otherwise the green channel has to inverted. Other than that, be careful with what UV smoothing algorithm you are using, there are a couple of options and they can generate seams, regardless if the model uses UDIMs or not. Hope it helps! - Juan
Can you help me that how can I use udims in game engines to optimize or how to use udims for game characters ?
I have handled many AAA game asset on only a fan basis, e.g. extracting and playing around with hero characters and weapons from modern game files. I haven't seen any ones that use UDIM so far! It is common for them to use about 4-10 concurrent texture sets on a character, with variable resolution between the sets, but in every case I seen they just use materials to separate them instead.
UDIMs aren't unique in that regard - you can still have your 4k face with 2k shoes and 1K backpack straps - but material separation seems to have advantages over UV separation when variable cosmetic skins are involved. Devs may happily add different procedural or tilable elements between cosmetic skins or change shader-level settings which justify separate materials anyway. There are other reasons too, like how game assets are made to be regarded by player-controlled view so an abstract imbalance of resolution is pointless unlike with a directed camera shot.
As far as I can tell UDIMS aren't a optimization philosophy rather just an alternative workflow for efficient texturing, that may or may not be appropriate or even efficient for something.
@@Fe7Ace thanks for help 🙌 I am working on my own game with a small team of my friends..... So i just wanted to know should I go for udims bake uv or materials thanks for the answer.
Thanks @Nikola Wiche for the answer. I focus mainly characters for feature animation or series, so I dont have much experience with game assets. But from what I understand, UDIMs are here to reach huge amounts of detail - which can be handled without problems in rendering, but games need to keep things real time and loading times fast, and having 10 times more texture files for gaming is not very effective. I guess they might be some exceptions but I believe that the main reason some game engines support UDIMs, is for game cinematics rendered in such engine, in that case, no one cares if it is not 100% real-time. You can have some lag but still able to render shots quickly.
@@cgboost thank you!!! now I had a complete workflow how I have to work. Thanks a lot and as always you guys are amazing !!!
This video needs an update for 3.4+ users, anyone watching this without checking the comments are going to be confused, and that's not to say the comments themselves aren't being clear enough.
Good point, but Blender's development is moving fast forward and it is not easy to update every video :)
hello i have a question, i will try to explain : i did a character and i have the eyes, teeth and tongue joined , the clothes like jacket,pants, belt joined apart, and jewelry with necklace joined , and body is apart, so , i have a total= 4 tools , my question is : ¿ should i join all my tools and then create the tiles UDIM for start to do the uv maps? or should i do those UDIM tiles with each one of my tools? ( the four tools ) ? my point is, that i want the best resolution for all
If you run for the resolution then use separate UDIMs for the different parts of the model. That way you can set the texel density you need separately, with the maximum used space.
~Egon
hello) I didn’t understand how to add a separate texture to each tile) can you tell me?
In the current version of Bledner you do it in the right panel (accessible with N shortcut) in the Image tab. There is a UDIM Tiles section where you can add and fill the new images for UDIM tiles. When you save them they will receive the udim number at the end of the name (they will all be saved at the same time). Then you can edit them in external programs if you want. If you want to load pre-existing images to UDIMs - they just need to follow that naming convention and you can select UDIM tiles as the source in the Image section of that tab and load them from disk. There's also a reload button there if you want to update the images after tweaking in an external editor.
@@cgboost Thanks for the answer. But, unfortunately, the logic is not clear to me. Excuse me. The image is set only on the first UDIM tile, and on the rest - either a grid or a black background. Accordingly, the textures are also only for 2001 tile. I asked how I could set the texture on each tile. When you select the image for 2002 and the rest of the UDIM tiles, nothing is displayed, but either a grid or a black forn or nothing. Thank you.
@@letomaneteo When you add a new file from the right panel (from the image tab - where you need to set the source as UDIM Tiles, then in the UDIM Tiles section - using that little plus sign to add a tile) it should fill the new tile with an image. Also when you already have separate files you want to use on the tiles you can load them to the grid from that image panel (accessible by pressing N). In order to control to which tile each image go - they need to be named accordingly (ending with the tile number as suffix of the filename)
would love to know how to work from mari to blender, can't get it to work -_-
Thanks for the suggestion! I work with Mari but I haven't seen much people from the community use it (honestly no one so far 😅) , so I wasn't sure anyone would be interested in the topic. What exactly is the issue? - Juan
@@cgboost I would imagine not many work with it who works with blender. Because all blender users know little of udims.
I would like to take xyz maps to blender somehow. Yo set them up and render.
Yeap, also Mari is a more expensive alternative so that lowers the number of users a bit. Understood, well the thing about XYZ maps is that it's not just about applying it, but also about properly projecting all the information to the model, and projections are one of the things where Mari excels, thanks to its painting buffer, it's very flexible. I haven't heard of many people interested but I could do a blog or something! - Juan