An introduction to Raymarching

[@kishimisu]

I hope you'll find this tutorial to be a useful starting point for learning more about raymarching! You can support these tutorials on Patreon: www.patreon.com/kishimisu See you in the next one!

[@CREATUREwithEnergy]

Your tutorials are so useful and inspiring thank you for teaching me so much!!

[@codeunited5905]

You are one hell of a talented person. Hope you find a good employment soon!

[@onetwothree2617]

Your tutorials are fantastic, thank you. I like the AI voice over.

[@jcponcemath]

These tutorials are amazing! Very well explained and with lots of visuals that help a lot! All the best!

[@likrecelineation]

Can you do a video on how to add lights, shadows, and specular reflections to the scene when you do?

[@DissentingPotato]

It's literally a crime against humanity that this man has stopped making youtube videos. these videos are amazing

[@magni6o213]

maybe he'll come back ...

[@DissentingPotato]

@@magni6o213 dude has literally just the two videos and 50k subs, there is definitely demand for videos like this.

[@krzysztofwolski9156]

Thanks a lot for this video. IT's great and easy to comprehend. I just spotted one mistake, so I'll share with people if they get stuck: 26:55 - When doing the time-dependent offset of the cubes the line q=fract(p) - 0.5; should be changed to q=fract(q) - 0.5;

[@benxtan]

I as just about to post this correction. Thanks!

[@jacobosaldarriaga4820]

Thank you! I was going really confused for a while, thougth of changing a bunch of stuff except that, makes sense.

[@VerdASMR]

10/10, kishimisu you are a brilliant shader artist and an equally brilliant communicator of information. Please keep sharing that gift with us ❤🙏

[@psenej]

OMG THE RETURN !!

[@Kabodanki]

The algorithm choosed him

[@danycorona6788]

A just became a supporter at patreon because of this video. I think you nailed the perfect balance giving just enough information to understand what’s going on without getting bogged with details while providing external resources to drill down. The visual explanations are great too. Looking forward to dig in with your next tutorials!

[@CathodeRayKobold]

The biggest flaw with ray marching, in my opinion, is that it can be difficult or tedious to design certain arbitrary structures purely with math. It's not a very artist-friendly technique.

[@miguelpereira9859]

I guess thats because there are no tools made to ease the creation of objects withought manually writting functions in code

[@seanloughran6714]

Had to pause in the middle of the video and say, that Milky Way comparison was amazing, funny and instructional. This is an awesome video, well done!

[@2_Elliot]

Man, talk about underrated! Here from your previous video, can’t wait for your next. Keep up the good work!

[@memofie]

damn the journey is extremely interesting, I watched a half of an hour straight without skipping anything. nice presentation man

[@Lavamar]

Amazing tutorial once again! Your first video inspired me and many others to start experimenting with shader code. This video made basic 3d graphics easily understandable, previosuly to me a daunting task. I also love how you briefly explain several sub-concepts in their simplest forms, prompting a lot of creative exploration. Really appreciate your style, pacing and looking forward to your future videos.

[@simgamedev6423]

I've been waiting for new videos for so long!

[@gdthatbigderp2375]

The legends said that some day, kishimisu will return!

[@connor43057]

I really hope you make another tutorial soon. Your two videos are the BEST shader & raymarching content I've ever seen, and I've worked professionally as a graphics programmer.

[@j-will5237]

Very good job. All is very clear; Probably the best introduction to the raymarching. Thank you very much ! I hope there will be a sequel :)

[@Darkensses]

Thank you kishimisu! you're a true inspiration for me! Shaders are a very complex topic but with your help, this kind of programming is begin become easier :)

[@MashJDW]

This is a fantastic introduction into Ray Marching. Wonderful video. I've started this journey myself a few months ago, and your visualizations will really help others conceptualize these seemingly complicated operations!

[@Mireneye]

Seconding the people who wish to see more, this was a brilliant video & I hope you'll come to a point in life to have the ability and want to make more

[@NeverduskX]

This video was so dense with information yet so well-explained. I'm going to rewatch this a few times just so I can absorb everything.

[@grey8_]

Awesome video! I was occasionally checking your channel to see if you had a new video since you said you're working on a new video on Instagram. You did a really great job! Especially because it was a topic I wanted to checkout anyway. I'm looking forward to more raymarching and seeing your channel evolve, I think you'll succeed easily! Good luck! 🎉

[@mutantmantish6141]

Hey, don't stop making videos like this!

[@MysteryPancake]

Fantastic!! I especially like the diagram at 25:18, it's a very interesting way to visualise it

[@sIippo]

Great video! You started small and worked up to some really cool demonstrations. Thank you for doing this all in shadertoy too, so I could quickly try it out for myself.

[@pekka8605]

10/10 Nothing to add. Very clear yet concise explanation and visualizations.

[@Nosikas]

Oh my gosh, you're back! These videos are phenomenal.

[@erevanayen]

My guy is literally teaching magic and asks nothing for it. The production and information value of this video is insane. I'm making a patreon account just to support you.

[@randomystic218]

This is an absolute gem. Please keep making more of such videos

[@januskane1978]

I enjoy the AI voiceover, it's calm and to-the point! Very nice!

[@alexmijo]

same, had no idea it was AI

[@najlitarvan921]

to be frank it is one of the better AI voices

[@Apn_123]

The Best Introduction of Ray marching ever

[@Adam-ef6ij]

this is incredible, i am new to shaders and coding in general and this video was understandable and motivating. keep up the amazing work!

[@someguy1428]

Ray marching is such a beautiful technique. Infinite objects with mathematical operations with low computational power.

[@MrXav360]

OMG thank you so much for making your first two videos! It answered sooooooooooo many questions I had about psychedelic arts and gave me the push to learn GLSL and generate animations from C++. If I may add, the distortion effect is actually from an error in the concept of the rd variable. It should be vec3 rd = normalize(vec3(uv0, abs(ro.z))), since we want the direction of the pixel from the camera (we thus need to take into account where the camera is placed, otherwise the cone of rays isn't projected from the camera, but from a point at (0, 0, -1))

[@nathanlebon5813]

GOAT Tier learning material. Thank you a lot! I'm seriously thinking about subscribing to your Patreon after 2 tutorials.

[@SuboptimalEng]

I wish this video existed when I started learning Ray Marching (earlier this year) because it would've saved me weeks of self-studying. Really amazing work!

[@PledgeBass]

Thank you so much for all of the effort put into this. I don't have time to dive into shaders right now but it's something I've been wanting to do for a while.

[@orangebananaaaa]

Seriously, the best tutorial and explanation about the ray marching. Thank you for sharing.

[@NeilMyatt]

This blew my mind. I thought those 3d shaders were just beyond the scope of my tiny brain, but you just unlocked a million doors for me! Unfortunately my maths will still be a major limit for me, but luckily there’s all those prebuilt functions for rotation etc. thank you!! 🎉❤

[@loriennasarre]

Dude I was really waiting for you to drop another video. I am getting into the world of 3D graphics and shaders and your insight is very appreciated!

[@Elmo-uu3cb]

Wow amazing! Thank you for sharing all those great lessons 😎🔥

[@JakeDownsWuzHere]

double thumbs up for the Quaternion videos you linked, they're invaluable in understanding what at first can be a very opaque and confusing construct

[@BarneyCodes]

Another great video! I've been meaning to explore raymarching for ages, so this might be the push I need to get started!

[@puntig.1187]

I just decided to get into shaders, as a self-taught "creative coder". Your videos are absolutely stunning, highlighting an incredible production value. Be sure that I am going to follow your every move ;) I think you just convinced me to become a Patreon.

[@fredbakas]

Just chimin' in to say I love your work!

[@symbolenjoyer]

Great video! I toyed with fragment shaders before, but this video made want to go back and properly learn some GLSL and create a couple shader programs! As a point of criticism, I think the code you provide would be easier to follow along and more readable if you were to use proper variable names for values you hardcoded -- using something like `scalingFactor` instead of 4., for example.

[@kimmyera174]

Yes. This is a general coding practice called magic numbers. Eventually, constants that never change or one off values, may need to be understood by anyone revisiting the code in the future... that also means yourself :p This was a good tip from professors when I went to college for programming. Also keep up the vids, I'm subscribed for the incredibly easy to follow, guided visual examples that help explain what's fundamentally going on, step-by-step. Keep it up ^^

[@arnetriesyoutube]

I really like how much info even the description has!

[@neokortexproductions3311]

Thank you! You inspired me to get back into coding and creating generative art, looking forward to future tutorials🤝

[@Sadjina]

This. Is. So. Damn. Cool! I have played around with ray marching, but the idea of modifying the rays themselves was new (and awesome)!

[@Napriiihm]

Like the first one, your video is so amazing ! So well explain and full of art potentials ! Thank you very much !

[@Veptis]

I am still working on my shader generation evaluation for language models, but your videos have been a great aid to help people explain what shadercode is and how you might interpret code as art.

[@Cigam_HFden]

Excellent run down of a lot of concepts and aspects of ray-marching. I have been experimenting with raymarching and SDF shapes in the godot engine. I am not sure how performant that will be, because I am still working at making the code for it. However, I will definitely be looking forward to your future videos. Cheers!

[@foxxify1]

This is so cool. I love the exploration into noncartesian space. You can really do so much with just a few lines of code.

[@jacobbb-t7i]

Fantastic video! Looking forward to more in this series. I'm a big fan of the 64K demoscene and the creative and technical uses of raymarching, but never could give myself a starting off point to try my hand at my own. You just unlocked a whole universe of exploration for me.

[@mlecz]

Fantastic Video !, The content of this material is so valuable that the participation of AI as an speaker completely does not bother me. Thank you for your work !

[@juanloutech2864]

Very, very interesting and very well explained! Thanks for this introduction to the huge world of shaders!

[@maninthebags]

Bro i cant wait to see really cool stuff like reflections and shadows added to this. it would be sooooo cool. Very much cant wait to see more!!

[@hordorsok]

Oh man, you are finaly here thax for video!

[@somewhere-else]

ai voice or not the effort that went into this video is obvious and it’s top notch. honestly reminds me of robert penner’s work back in the flash days.

[@Dezomm]

If you continued this series it would make me so happy 🥹

[@4.0.4]

Absolutely amazing content. I can vouch for The Art of Code too, his videos are long but very easy to follow.

[@briansheldon9401]

Incredible video. Could someone please explain why at 7:27 the ray direction is given as normalize(vec3(uv, 1)) and not normalize(vec3(uv, 3)) for a camera 3 units from the screen? Shouldn't the direction be normalize(vec3(uv, distanceFromScreen)) for this setup?

[@hekuli]

You really have the best tutorials on the topic. Very well done explaining complex topics in easy to understand terms.

[@futurebypatrick]

Great video with great presenting format. Really appreciate. I am not coder at all, but really interested in this type of experimenting now. 😁😁

[@Shamysoza92]

This is fantastic! I am walking through the process and I found a problem, but I am not sure if that was me, or there is something wrong with the original. at 27:01, when translating the box, inside the fract() function I noticed that using "p" as input will not work since we are currently using "q" instead. Just as a heads up to anyone following along. Please keep up the fantastic work!

[@kishimisu]

Thank you for pointing it out!

[@Chevifier]

Huge thanks for this point out I was stuck here implementing it in Godot 4.2 and was wondering if I missed something.

[@EZO.FUZZ.IS.OFFLINE]

Absolutely incredible! I hope to see more videos on shaders from you! 🎉

[@johnmeow]

There is already 11 months we need a new tutorial ❤

[@Soverthe]

26:54 Shouldn't the next line be "q = fract(q) - .5;"? The upward movement didn't work when I had p inside the fract

[@kishimisu]

You're right there is a small mistake in the code!

[@marvinkruger4559]

Thank you so much for another wonderful video!!

[@miyu1424]

Finally! I'm so excited!

[@isma.noether]

Incredible tutorial ! Thanks a lot ! Just one question, is it normal that your cartesian coordinates system at 7:01 is left-handed ? It seems a bit odd since, as I thought, the convention was right-handed cartesian coordinates system.

[@aref2268]

Aah shade, here we go again Now I have an awesome toy to procrastinate with. This tutorial is amazing🔥

[@ahsan2649]

The only raymarching tutorial I ever understood.

[@maximoto42]

Nice man, love your work! Keep it up ❤🧡💛💚💙💜

[@Qweze]

time to stop raymarching and start raymaxxing

[@hldfgjsjbd]

I would much appreciate video about volumetric clouds and implementation in Unity

[@viezegast1305]

Absolute unit of a channel

[@MTweedC4]

Really enjoying your videos! And have recommended them in my developers circle (:

[@erikjohnson9112]

Great to have you back! Personally I would like to see WebGPU perhaps using wgpu (and engine that supports both desktop and web). Compute shaders & fragment shaders are my top topics (or more precisely areas).

[@kishimisu]

I might create a video about webgpu in the future to introduce compute shaders. However it may be difficult to fit on the screen nicely as wgsl is more verbose than glsl!

[@bitblit]

Never thought I'd learn how to become a lightbender, but this video made it so easy! Universes beware.

[@hiaaf6105]

I was doing this with unity's compute shaders, and at 12:20, any iteration number over 68 creates a black "crosshair" pointing to the sphere. Does anyone know why?

[@rimonsade-jd3id]

That is beyond great content. Truly mesmerizing.

[@Not_Even_Wrong]

Amazing, awaiting the next videos eagerly!

[@motbus3]

This is absolutely amazing. Please keep doing it!

[@IgneousGorilla]

Id like to run shaders locally, since I expect it could give me better performance (I have integrated graphics and most shaders on Shadertoy lag my PC when in fullscreen) and more control over inputs. I'd love to make interactive shaders, but on Shadertoy rotating the camera requires clicking - I havent seen a single shader that lets you rotate the camera by just moving the mouse around without clicking.. I'd also like to keep Shadertoy's editor simplicity. Does anyone know what my best options are? I'm not asking for a 100% premade tool btw, just some options (like libraries and languages well suited for this).

[@Dromeo3]

im so glad you're making more content

[@chujies]

Babe wake up, Kishimisu dropped a new video!

[@michaelcheverie7579]

Just this afternoon I was messing around with applying rotation matrices to conic sections in the Desmos graphing calculator. Cool to see that technique used in shaders!

[@dumbo8260]

nicely done dude. can't wait for the volumetric tutorial

[@razu1976]

This is such a good video. Well done.

[@shinomitsu7798]

Thank you. Can't wait for the next video

[@daereanlegrand2471]

You're Bob Ross but for CS nerds, love you

[@LuigiElettrico]

Simple yet amazing.

[@simonviit4982]

Thank you, I hope you might consider produce "An introduction to RayTracing" in future.

[@jazzhar]

I found it incredibly easy to understand, you expertly explained not only the goal but also what individual components did without making it confusing. Although it's not shader, but could you tackle cube marching? (Procedural generation) Havent found someone that could explain it well yet.

[@alexandersedykh9280]

I love you and your lessons

[@randomystic218]

The ray direction should be pixel position - camera position = (vec3(uv, 0.0) - ro) right? Why is rd = vec3(uv, 1.0)?

[@JimmyBrandZ]

Wooooow!... Just the thing i've been looking for. 😲

[@tiagotiagot]

Is it possible to correct the space distortions mentioned in the end to avoid the artifacts?

[@cyberbemon]

Lol this video would have helped me a lot about 2 years ago when I did my computer graphics module. I was struggling to find a good video that broke down Raymarching. Still better late than never, I can use this to revise that shit properly now!

[@parkedhampster212]

We did it, fellas - we reinvented the CRT in the virtual world

[@unvergebeneid]

Free you mind, Neo. What you must learn is that these rules are no different than the rules of a computer system. Some rays can be bent. Others, can be curled up like some non-physical strand of hair. Well, I'm pretty sure if Neo had made full use of his ability to bend the rules of a computer system, The Matrix would've been a much different movie. And much more popular with the psychedelics crowd.