ฝัง
- เผยแพร่เมื่อ 25 เม.ย. 2023
- 🔗This is the first video in a series of tutorials. When more episodes are published, you’ll be able to learn how to make other useful shaders in the full playlist: • Playlist
List of IOR values of various materials for reference: pixelandpoly.com/ior.html
📝 At 9:16 you’ll notice “Clamp” is checked. DO NOT CHECK CLAMP, that was a mistake which I tried to edit out but was unable to completely erase after uploading.
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In this tutorial we learn how to take the Principled BSDF shader and simplify it for metal with the added accuracies: An accurate IOR factor for easy copy/paste of the correct values of the desired metal, and a simple addition to make the metal glow red-hot with accurate coloration.
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You may become a Patron to download the assets from this tutorial series without doing the work yourself. / nrdkraft
Link for current Patrons to download the assets from this tutorial series: / 81988103
😊 Current Patrons at time of publication
Joshua Stafford
Sagi Frenkel
🎵 Music: Sunrise-JVNA from the TH-cam Audio Library • Sunrise
#blender #blendermaterial #blendermaterials #blendermetal #blendermetalmaterial #blenderprincipled #blenderprinciplednode #blenderprinciplledshader #blendershader #blendershadereditor #blendershadernides #blendersword #blendertutorial - ภาพยนตร์และแอนิเมชัน
![ภาพนี้ก็ฮาเหมือนกันนะเนี้ย #1 SS8 [ พากย์นรก MEME.EXE ] | easy boy](http://i.ytimg.com/vi/Ytc50m91QK8/mqdefault.jpg)
Please continue your work here on TH-cam. Your content has been more helpful and understanding in blender than any other content creator I found. Idk why either. Maybe because you explain why,what and how something works.
Thank you so much!!😌 That’s indeed my aim; to equip people with insight which they can apply beyond just the specific subject of the tutorial.
My next tutorial hasn’t come as quickly as I’d like for reasons but I am currently in the process of producing the next one!😋
I'm subscribing to your channel because as far as blender is concerned, you explain all the aspects without taking shortcuts in your explanation. That is very much appreciated. Keep up the great work.
Thank you so much! That’s the way I like people to explain things to me! That they don’t skip details that they assume I know while at the same time not talking down to me. So that’s what I endeavor to do.😁
I've been interested in properly learning blender for a while. Creating some things here and there but mostly watching videos. This has so far been the Only one to equip me with the knowledge to understand what Im doing rather than just telling me how to do things. This not only has me excited to learn more but also to create more! Especially since texturing and relying on somehow making things look "good enough" has been the biggest hurdle for me as of late.
Post notifs on and Im strapped in!
Oh, I’m so glad to hear that!😄 I think it’s most important to not just learn the What, but the Why, as that equips us to apply what we learn beyond the subject of the tutorial and to anything we want.
Have you come across Andrew Price’s tutorials on his channel Blender Guru? He is very good at explaining things in useful ways and is one of my inspirations.
This channel is gonna soar I have watched countless Unreal Engine and blender videos and you're the first person to speak clearly and at the right pace
I’m glad!☺️ Commenters indicated in my last vid that I was going too fast, so only by listening feedback can I hopefully give what others actually need☺️
I agree, this was good pace.
@@MikkoRantalainen I’m glad! Hoping to do my best to help the best way I can😊
these videos are extremely helpful, thank you for taking the time to put this all together!
Yay! I’m so glad! More on the way soon as I can!☺️
Love the tutorial and looking forward to more in the series
Thank you, I’m glad! Next one should be on its way in the coming week I think!😊
Very good tutorial. Excited for the next :D
Yay, I’m glad! I’m having some technical issues at the moment but more videos will come soon!😉
That's amazing!!
Thanks man!😁
this was really concise and easy to follow, excellent tutorial
I’m glad! Hope to make my tutorials helpful as they can be!
Great video. I learned some great tips
Yay! Glad I could be of some help!
We want more. Great work!
Thank you so much! Some unforeseen things came up during the last two months delaying production, but now I’m back at work on the next video in this series!Coming soon!😁
Thank you for this tutorial, very clear explanation and great result. Keep it up!
Yay! Thank you too! Next one coming as soon as I can get it out!☺️
technical and clear at the same time. As you grow, make sure to specifically define the audiience you are aiming at. This was perfect for me (understands the general principles;; interested in specific applications to achieve specific effects). thumbs up
I’m glad! And thank you! That is something I am still hammering out and need to do better; to identify the avatars or avatar that I am talking to in the tutorial so I can zero in on that the person needs.
Please do a tutorial on green screening / chroma keying.
Ooh that’s a fun one! I have something special up my sleeve coming for that one😏
I think the blackbody radiation strength should be directly computed from the temperature, too, if you're trying to make physically accurate model here.
That’s a good point! I thought about doing that but I neglected to find out what the equation for it’s glow brightness/strength should look like. Any insights on that?
@@nrdkraft Good question. I think you should use Stefan-Boltzmann law. It's basically Stefan-Boltzmann constant σ times the temperature to the fourth power. As usual, the temperature should be measured in K (kelvin). That gives you the radiation in W (watt) and you may need to divide that by Pi to get watts per square metre per steradian.
As the scale that Blender uses internally is unknown you can basically just to temperature on the kelvin scale to fourth and the whole result multiplied some correction factor (trial-and-error) which would include both the Stefan-Boltzmann constant and Pi or some other factors needed to make it sensible.
I would try something like (1e-9 * t * t * t * t) where the t is the temperature of the object on kelvin scale. If you then try something like 1400 K with iron, you should get glowing orange and practically black for 500 K.
@@MikkoRantalainen Awesome, thank you for the tips!! I’ll take that into consideration and do a little more research as well. I may save it for a slightly more advanced black bodyshader that I’d like to do in the future. A smaller separate node that can easily be added to any other shader whether this metal (at its pre-glow stage in this tutorial) or dielectric materials like for hot glowing wood or coal or otherwise. Currently the Blackbody node only goes up to 12,000°, and I believe some stats glow hotter blue than that, so I might want to add that little accuracy in the future too.
I am wondering if this technic can be used in Blender 4.0 with the new Principled Shader that has been updated to adress many issue the previous Principled BSDF node had.
I was certainly taken aback when the new Principled shader was released after I posted this video.😆 The truth tho I think is that my setup 𝘤𝘢𝘯 be used in 4.0 (other than that the 4.0 Principled node’s Specularity seems to have an error with metal which I hope they fix soon) but the question is whether it’s really needed now. Since one of the motivations behind my making this node group was the overwhelming size of the old Principled shader, in 4.0 that irritation has basically been solved with the node panels that have been introduced. I’ve honestly been more comfortable just using the Principled shader than I was before.
as of blender 4.0, is the IOR value changed in principled BSDF?
Yes sir, indeed it did. It seems this would make what we did in the tutorial unnecessary now. Since it seems in the new Principled shader the IOR value should affect metallic shaders the same way we made it to do in this tutorial. So this tutorial might be rather redundant now.😆
The only problem I noticed is in fact the IOR and the Specular (which is just a multiplier of the first) don’t seem to have any affect on the shader when it’s set to metallic, namely the white-ish reflection fading in around the edges. I assume this an error or oversight in 4.0 and I did report it on Blender’s Right Click Select web sight, we’ll see what comes of it.
@@nrdkraft ah i too was confused looking at the other IOR field inside Specular thinking what and why there's 2 fo them 🤣
Will you be updating this for Principled V2?
Good question! It looks like the workflow for a metallic shader such as we create here won’t change much for Blender 4.0 except that the Principled shader itself looks rather different. But as far as I can tell all the values will work the same. So our resulting Group Node asset(s) should look the same. However, if there are significant changes then an update would be the goal.😁
Update: as I’ve been playing with 4.0, there’s some extra functionality which would make creating this group nodes more fun, so I may very well update this tutorial😆
i'm confused. specular doesn't affect metallic materials. at all. u can just set metal to 1 and tweak the specular value and nothing will change. so what's the point of that whole nodegroup into the specular socket of a fully metallic shader???? (btw the factor is there because u may have masks to define metallic parts of a textuse, like a manhole on a road. it could be a boolean but this way u leave more artistic control.)
Yes I ran into this issue too. Specular used to affect metal as it should in the version of Blender we had while I recorded this, but I noticed in Blender 4.0 when they updated the Principled shader, the Specular doesn’t work as it should on metal. I submitted a report on this problem to the Right Click Select website and I’m hoping they address the error in another version of Blender soon. But yes, if they fix it, that setup for the Specular (through IOR like here if one chooses to do so) will serve a function of technical realism.
And yes allowing a factor or Boolean for metallic parts might be useful for some people in certain cases, this tutorial merely focuses on cases where one wants an entire material to be metal. But that’s more just a preference, especially now that the Principled shader looks less busy as is anyway thanks to node panels since 4.0.