Render Passes in Blender 2.81 - what are they and why even use them?
ฝัง
- เผยแพร่เมื่อ 15 มิ.ย. 2024
- In this video we will go over the different lighting render passes available in Blender 2.80 and how to use the compositor to recombine the passes to match your original render.
If you want to follow along with the video, grab the blend file here:
www.dropbox.com/s/59qp8lch7bq...
Check me out on Insta:
/ dylanneill3d
0:00 Intro
0:47 Rundown of the different passes
4:59 How to composite the passes
10:06 How to keep nodes clean
12:24 Demo of use cases
14:43 Using cryptomatte to isolate objects
16:52 Caveats
17:29 Adding glow with emission pass - แนวปฏิบัติและการใช้ชีวิต
Hey sorry guys, I made a bit of a mistake in this video by not showing how to save the passes out.
Essentially you DON'T want to do the compositing in your 3D scene but rather render your 3D directly to "OpenEXR Multi Layer" format (in the output settings). If you're not using Cryptomatte then you can set it to "Float (Half)"
Then you would do your compositing in another scene or blender file and bring your render in to the comp using Image nodes rather than the Render Layer nodes. The Image nodes will have all the same pass outputs as long as you render OpenEXR MultiLayer from your 3D scene.
I will do another video to explain but I'm not going to get a chance until next week.
Thanks for clarifying that! I've done that mistake in the past and my initial render got rendered twice (first from the main file output and then from the file output in the compositor)
Great videos Dylan! Thanks for sharing your knowledge, I've subscribed to your channel.
alright, if you could now tell me which node I use to add in the shadow layer then everything's perfect
and just a little side question: is it possible to use the denoise node on just the shadow layer or will that break things? because I made a teddy bear with hair particles and the shadow's are a bit too noisy in my opinion but when I add the denoise node to the whole image it treats all the hair like noise and blurs it to the point where I could have just used a flat surface. then I remembered you had this tutorial about render passes so I figured I might ask you about it
@@pierregagne1998 hello brother
I have a question if you can help me, I want to save the passes in exr file or multiple png files which contains direct difuse glossy z depth and id or mask object ...
How to save passes to do the compositing on after effect ?
@@imad3d536 Use Cryptomatte to output OpenEXR Multilayer with the Cycles render engine. "th-cam.com/video/Ml1Kic4VopA/w-d-xo.html".
Then in the Passes, just enable everything (Direct, Indirect, Color) and check all the tick boxes you need. It is going to give you a bigger file size but everything will be included.
For Cryptomatte setup, enable "Object", "Material" and "Asset" and leave the "Cryptomatte Levels" untouched.
Press "CTRL + F12" to render the animation(s) after you made a specific folder location for the frames output.
To save time install "www.exr-io.com/".
See the tutorials here "www.exr-io.com/learning/" to output your sequence of frames without getting a huge cobweb in the Blender's Compositor tab.
I haven't figured out yet how to get the Subsurface Scattering to work with Cryptomatte, but my guess is that you need to assign a texture in the shading network in Blender.
Just enable RGBA if you decide to use PNG instead of Multilayers Open EXR files.
Finally, open the images sequences in After Effects or in Blender's Compositor if you prefer.
There is a course on www.chocofur.com "Interior Visualization Blender 2.80 Course" (Check Learning resources).
It is worth every penny since it is an invaluable tool to have everything tied together in a structured fashion instead of scurrying around TH-cam.
Let me know if that helped! Happy Blendering !
You're one of the few people who actually explains kinda industry workflows and I love it, keep it up man
Hey guys, hope you enjoy my latest tutorial. This was a request from a friend who's learning Blender and he couldn't find much info on render passes. Is there anything you're struggling with in Blender that you haven't been able to find much info on? Let me know in the comments and and I'll look into doing a video about it.
The animation tools, especially the NLA editor and how to blend one animation into another like and idle into a walk into a run, and some kind of controller, controlling drivers to make it all work
Great tut! Easy to understand. Thank you very much.
Such a headache with compositing. Everything about this topic is gold mine to me.
One thing you didn’t mention that’s super important is that to save passes to a file you have to use OpenEXR multilayer, otherwise all the pass info will be lost as soon as you close Blender.
Hey Dylan, really good tutorial - thank you! I'm still struggling with the comping of those passes in Fusion. Unfortunately I can't recreate the look of the beauty pass and apparently the alpha channel seems to get lost during export (channel is ticked in blender and in fusion as alpha selected, but in fusion it's simply black). Sorry for this somewhat vague question. Maybe you got some tips on hand :)
Specifically shadows, shadow catchers, shadow passes, compositing with shadows etc.
I've watched a ton of videos on this subject but yours is the first that really showed me how to get control of those damn nodes and all the spaghetti!
I really appreciate this tutorial especially for the part when you mix passes with cryptomatte node!
Hope I didn't duplicate anybody's comment. Just two tips:
1. You can save this setup in your startup file so that you don't have to repeat all these steps each time you do a project for a client, or save it in a file and append it (after enabling all the passes you need in the settings).
2. If your render takes 3 days to complete, you can save the output file as an EXR and later edit this file. Or enable the "save temporary render" switch (if I'm not wrong) in render preferences, in order to force blender to save them automatically as .exr: handy with animations...
Good tips!
Mind blown. I'm more of a modeler but I've been meaning to get into rendering a bit deeper. Your tutorial has really opened my eyes to Render Passes...Thanks!
Just want to say THANK YOU for taking the time to make this video. After watching this, I will always render out passes. So much flexibility for the composite stage.
The numbering of the cryptomatte output sockets of the "Render Layers" node has been fixed for 2.82.
Oh thats great!
2.82 just released 2days ago, and I will definitely try this!
3 years later this video is still very useful! thank you
First video I’m seeing of yours. I really appreciate you sharing your knowledge. Good explanation abd great example of how to make changes and what the gotchas might be. I’ll be following.
Thank you for putting this up, especially pointing out the hotkeys and basic mouse gestures to do the small stuff in the node editor. As a blender noob here, I appreciate those comments.
You are the man, so much info, so much knowledge, so much love for the community!
This would've helped me a lot months ago, but I'm thankful for this as now I can reference a good thorough tutorial on passes.
Thanks so much for the straight forward explanation and demonstration of purpose. I've been looking at the render passes section for years wondering what to really use it for and just ignoring it.
Great tutorial! Thanks for taking your time and sharing your knowledge. Happy Blending for all!
It would be great if you shot a video about shader nodes and working with them, because there are few videos on TH-cam that explain how to work with them, how to compose them correctly. Or explain all the mix shader modes.
Thank you for your awesome content!
Yeah OK that sounds like a good idea!
You simplified this and it made more sense to me than ever! Thank you so much
Very useful tutorial. Thumbs up for even showing how to arrange the nodes in a way that makes it easier to deal with the complexity.
Thank you! :)
Answering the “why would I need this?” questions was great. Thanks.
Keep them coming. I always learn tons. Thanks!
As always, awesome explanations!!
Thanks Dylan!
I always learn so much from your high quality tutorials. Thank you!
Just the right amount of info. not more, not less. this is a perfect video.
best vid on render passes I've seen thus far. kudos
This is a very informative video.
I would be interested in a follow-up video about saving each pass as image files and how to put them together in programs like Gimp, Photoshop and After Effects.
You have exr io for photoshop and another similar to gimp, than can read exr multilayer files
The best clear tutorial to explain pass ,expect more tutorial
Really insightful mate. Thanks! I've worked with Blender for years now and render passes is one of those areas I've not done too much with. The odd bit of glare on lights, fog, or adjustments that could be done in most decent image editors. This is a whole new dimension though. Very useful indeed.
I was just looking this up and there you appear, thanks.
haha same here
And your comment here helped me discover your works.
Bro, this is INVALUABLE! Hats off!
Thank you so much for this! Love these technical videos that many dont talk about.
This was a fantastic video thank you so much. I always had trouble with fog glow on emission objects but now with the emission pass I'll be able to hone in on my craft. Cheers mate!
This was very helpful even without the saving step. Thank you!
Love it, clear and consise, thank you!
that was very helpful for me . thanks for making such a good video
Wow, exatcly what i was looking for, thank you soo much, very clear and very usefull
I believe this is one of the most informative videos on blender, Thank you for sharing the knowledge, honestly, I didn't figure out till the very end of the video why all of this deconstruction and reconstruction, but the cryptomatt is really worth it... still the benefits are most for videos, images can be fixed in image editors.
The only drawback is that mixing to be done but it worth saving the render time and electricity.
Thank you.
Very nice, easy to follow tutorial! Thanks!
amazing this is so good loving those tuts more please from the compositor
Thank you so much for explaining this in depth. Subscribed!
The best tutorial on Render Passes...
very helpful - great short-cut tips - thank you !!
Loved it absolutely! Most difficult thing in Blender made simple and easy. Thanks
Thanks a ton! Very good explaination.
Thank you for the tutorial. There isn't a lot of information about compositing in Blender it seems like a solid compositing package.
Excellent tutorial. Many thanks!
Great video; thanks. Now I finally understand what cryptomatte can do.
Super helpful, thank you for this awesome tutorial~~
great video, great presentation. explained a lot of information fast and efficiently. kudos.
This helped me with my homework. Thank you very much
Very informative - thank you
this is so educative thanks
Thank you very much for this tutorial! It's really helpful
very clear bout render passes. now i understand. thanksss man
That is a great explanation video. Thank you a lot!
Awesome tut :)
Really useful info. I might start using this strategy...
Very helpful video man, thank you!
very informative thank you!
Great video, thank you!
I never knew about cryptomatte, but it is awesome!
A really good video. Thanks.
I will go the Ian Hubert lazy way and simply change the color of the ball inside the material editor. x))))))))
Very good tuts though I have to say. You have clarity in your explanations it's awesome to follow your tuts because of that since you don't just skip over details yet you keep adding side hints which are often overlooked.
great one, thanks a lot
Great video!
You are the best. Thank you!
Wow! I had no idea this kind of stuff was available. Great stuff. Can't wait to see what other great tuts you have or will do so I subscribed. As a suggestion, I have been having the worst time rendering fire in Eevee with Film transparency enabled for a Alpha background. Any light you can shed there would be fantastic!
Hey Dylan, thanks for the great content! I think one of the biggest things I struggle with is UV's. I worked through your moving image video and thought it was awesome, but if you could produce a video that takes a thorough look at UV's and projection methods, I know I would appreciate it!
I really appreciate this tutorial because i'm look for a tutorial like this Thanks
Thank you for this Video !!
Fantastic tut. everything you wanted to know about passes but were afraid to ask coz you thought everyone was smarter than you.......except this guy really is smart.......so watch and pay attention
so useful ,thanks
Awesome tutorial
Great video
Lovely. Thanks man !!
great video thank you sm
this is freeeaking awesome!!!!! thanks!.
Great Tut. Definitely hitting that subscribe! Cheers
thats what i needed
Dude! Solid Solid Solid
This feature is so good, especially when there are tiny things you want to change
Awesome. Thank you so much...❤️❤️
Subbed. Great video.
Thanks! 👍
Thanks, I need this
Thank you.
Now I know something about Compositing .. :D
Thanks!!!
Thank you, I have been looking for this a little while. I love your channel.
Could you make a tutorial on material ID and Object ID, please?
Thanks! The old Object Index and Material Index passes don't support anti-aliasing or motion blur and have essentially been replaced by cryptomatte. I wouldn't be surprised if they are removed from a future version of Blender.
Thank you! Hope they would add some more passes for Eevee either in the future!
One of the developers was asked about this at the Blender Conference and he was saying because of the way Eevee works splitting out stuff like specular, diffuse etc is not straightforward. I just wish they'd hurry up and add object motion blur!
@@DylanNeill3D oh, that's pain! ))
thank's a lot :)
Cool!!!
This is so useful and well-explained!! Thank you.
Auto-liked at the Cryptomatte part)
P.S. "Gallop around Europe" about simulation types (fire, smoke, fluid and etc), force fields and particle/hair system - can be good idea for a series "simply about hard things".
Touching curves also appreciated)
Manta flow will be replacing all the current fluid stuff in a future version of Blender so I'm looking into doing some videos about that soon.
SUPER
hey great video - was just wondering is there way to render out the normal (digital multicoloured) render pass in layout mode? would like to easily get this effect!
Good tutor, thanks! I have some issues with combining passes in figma and photoshop because of different color spaces I think. Would you please make some sort of tutor video about how to post process blender passes in other soft )
i know i can use the z pass in compositing to defocus grease pencil objects to get depth of field. could i use these passes to somehow get grease pencil objects to reflect? like a cartoon character swimming in reflective water? i have not found a way to do this yet but would really love to
Hey, fantastic tutorial... I just follow your video, and I can test that is possible to use "NodeGroups" for every light and in this way you don't get a messy node editor
Awesome video. Would like to see your thoughts on how to export/save the passes to disk and then reload them into compositor from separate files.
As it stands, those passes would only be in memory right after a render. Or am I missing something?
If you set your render output to OpenEXR Multilayer then the passes get saved into that. At the moment separating them out into separate files is a bit of a pain (you need to use the "File Output" node in the compositor and hook them all up) But I'm working on making that process A LOT easier.
thats cool. What i need) but how to render all passes? Can blender to render all passes animation shot without my directing?