Light Path Node Demystified and Visualized in Blender

This node is so powerful, yet often overlooked. It sadly does not work too well with Eevee and will probably never work at par with its Cycles version in Eevee, but even then it's a worthy node whose applications could come in handy for anyone in various situations.

If you have any node that you think needs to be demystified, let me know and I will create an in-depth version as I did for this node.

Relevant Previous Videos:

Vector Math Node demystified and Visualised:

If you have any queries, questions, or suggestions, comment below and I'll respond as soon as I can!

More sci-fi animations, wallpapers, loops, motion graphics, etc. using blender3D or other completely open-source free software will be coming soon! Stay tuned!

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Time-Stamps:

0:00 Intro
0:11 Understanding Render Engines
2:18 Types of Rays in Cycles
5:42 Limitations in EEVEE
6:04 Example Scene Set Up
8:11 Is Camera Ray
8:41 Is Shadow Ray
9:12 Is Diffuse Ray
9:47 Is Glossy Ray & Is Singular Ray
10:36 Is Reflection Ray & Is Transmission Ray
10:57 Ray Length
12:41 Ray Depth, Diffuse Depth & Glossy Depth
15:42 Transparent Depth
17:17 Combining Different Effects
18:40 Transmission Depth
19:49 Things you could do in EEVEE
22:50 Final Thoughts / Outro

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[williamb]

Knowing that "depth" refers to bounces and not a distance helps me so much.

[Generic_mann]

This made me feel like I was back in my high school physics class 😂.
This is a very comprehensive explanation without boring the viewers to "alt + F4".
Thanks for the video it was really helpful👍

[lubaka]

Wow! Can't believe i just watched a whole 23 minute video in 6 in the morning, about the mighty lightpath node nonetheless! Truly an incredibly well made tutorial! Loved the explanations and practical examples, great job!

[demiancoorey]

What a brilliant explanation. And extra credit for including a mention of Snell's Law

[swordofkings]

The best video on the light path node I've seen. Thanks for making it!

[NoCodeFilmmaker]

Now THIS is how people should teach. I love how you broke this down in a way that makes the information accessible to all experience levels. Yet, you didn't detract from the complexity of the subject. Outstanding job. I subbed and would love to see more tutorials on demystifying nodes in general. Keep up the awesome job 🙏

[espiondev]

possibly the best blender light paths video. i would definitely recommend this to someone wanting to learn about it

[forestbrother]

I was just failing with this node last night, Thank you for the tips!

[osa]

we really need this kind of demystifed content👌

[DeShark]

This is so useful! I can't believe I've gone so long without knowing how raytracing works - I've basically just treated these "samples" and "bounces" as numbers that I can increase and it'll improve the render quality and decrease and it'll speed up the render, without actually knowing what I was doing. Thanks so much for this video!

[vstreet]

Just brilliant! The best, most concise explanation of Light Path functionality. Now I understand. Thank you so much for sharing your knowledge. THANK YOU! Dg

[olamideshodeinde]

Yh, the BEST explanation i have seen - i have always hated the Light path node. You might have just changed that.👍

[sideeffectsstudios]

Hey my friend. I really don't know how to appreciate this. You gave me a deep understanding. I really love this.video. thank you so much!
You deserve a better laptop!❤

[Locustavideo]

Super helpful and insightful video and leaves no questions open. Many thanks.

[SeanYeomans]

that was incredibly succinct and informative, thanks man

[tyc]

amazing stuffs, best light path node tutorial at the moment!

[sammediad]

FINALLY a video about lightning that even my brain can compute lol...Thanks a lot - got ya a sub

[qulzam]

the enthusiasim for 3D menifests itself in this video.

[modelworkzseo]

Brilliantly thorough analysis of the light path node; please make more videos like this one and welcome to the community :)

[BlenderFun_]

this is a really useful tutorial with the best explanation for light path node i ever saw on yt tutorials