What Are Shaders?

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Further Reading/Watching:
Toon Shader Code: rbwhitaker.wikidot.com/toon-sh...
Book of Shaders: thebookofshaders.com/01/
ShaderToy: www.shadertoy.com/new
ShaderToy Tutorial for Beginners: gamedevelopment.tutsplus.com/...
Makin' Stuff Look Good (entire RU-vid channel great at explaining shader concepts): / @danmorangamedev
Link Models in UE4, by Arnage: forums.unrealengine.com/commu...
Please let me know if you see resources owned by you in this video and I have not credited you!
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Опубликовано:

24 июл 2024

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Комментарии : 245

@daggawagga 6 лет назад

This is the best shader high level intro I've ever seen. So many introductions are either not succint or focus too much on something too specific for a intro.

@abjee1602 Год назад

wow

@zes7215 7 месяцев назад

@TehBurek 6 лет назад

Kudos for drawing attention to independent and parallel execution of shader code, as someone who teaches this stuff in computer graphics class, I want to stress that also. That answers many questions from people coming from "regular" CPU programming and adjusting to this, like "why can't I pass a variable to next pixel?" or "why's there no random function?", etc. Shaders are (mostly) meant to be fire-and-forget, no waiting around, no syncing with each other, otherwise the performance would crumble. This way, you can have massive parallelism, litereally thousands of real hardware threads running simultaneously, without worrying about it.

@lawrencedoliveiro9104 6 лет назад

Also note the difference between a real-time shading language (like GLSL) versus one for non-real-time use (e.g. OpenShadingLanguage, OSL). The latter does indeed have a random function, only it calls it “noise”. Another fun concept in OSL is that of a “material closure”. This is how you define the characteristics of the material independent of the actual lighting. For example, you have built-in closure functions for microfacet, refraction etc, which you can combine in your own arithmetic expressions, and leave it to the renderer to work out the actual lighting at each pixel.

@carterpryor3880 6 лет назад

Seeing your videos on things like this make me really want to get up and experiment! Thanks for another awesome video!

@umeshkumarasamy6608 5 лет назад

Where were you all this time? I've been looking everywhere for knowledge about shade and you've shown me the light

@ewaldikemann4142 6 лет назад

Very nice intro into a very complex theme. Even when it comes shading of objects in a 3d space with multiple light sources and various calculation techniques. I'm looking forward to the next part - thumps up!

@delchavez 4 года назад

Your videos are always so enlightening. You do a great job of explaining stuff that might otherwise be very difficult to understand.

@TheMahotizer 3 года назад

I just discovered your channel, and I’m so happy RU-vid recommended it to me. I’m a design student in college and a lot of things that are interesting to me are jam packed into this video. I also love how you take time to explain various concepts in detail

@tufekci0 7 месяцев назад

Love your videos. You sum up even complex subjects so nicely. Not so nerdy and not so shallow.

@guiguiregismercer5720 6 лет назад

Loved it, please make more video about shaders, lighting and techniques! Thanks

@ImTheBestJamie 6 лет назад

Ive always liked lighting in games as far as graphics are concerned, so its interesting to learn whats actually happening. Im looking forwards to the code :)

@bocanica1 6 лет назад

Thank you so much! This had me exited for my next laboratory for the computer graphics course which happens to be about shaders :D

@slowdragon4169 6 лет назад

i dont know how but you nailed the timing of publishing this video. Just in time. Like some superhero.

@NiemandKatzchen 6 лет назад

I wish that this video existed when I first started learning shaders, very good high level introduction and explanation.

@safebox36 6 лет назад

_doing Computer Graphics assignment_ Me: The f*** is a shader? TheHappyCat: _this video_

@kingarthurthethirdthst3804 6 лет назад

Holy shit, literally the same thing happened to me. Just started a graphics course and by the time I hit shaders this video came out.

@Interestingworld4567 6 лет назад

If you want to know 100% what is a SHATER. just go to the "NVIDIA" CHANNEL THEY have a better video of 2 hour explanation how a shator work.

@Collidedatoms 6 лет назад

Francisco: Would you mind posting a link to the video?

@Erlisch1337 6 лет назад

wtf is a shater/shator tho? xD

@tuxmusicman 5 лет назад

When you go through a whole Computer Graphics class without learning about shaders because your professor uses the old version of openGL . . .

@alperhicylmaz1301 Год назад

Wow I've just discovered your channel. Your explanation is so neat and easy to understand.

@massivewon 4 года назад

Never worked with shaders before, but this was a fantastic video. I learned a lot! Subscribed.

@allansh828 6 лет назад

nice to see people willing to sponsor this channel

@dealloc 6 лет назад

I think it's important to distinguish between the two kinds of shaders. Namely the vertex and fragment. Where fragment shaders are done for every pixel (therefore also known as a pixel shader), vertex shaders are done on every vertex. The order of the shaders are also key; Fragment shaders are applied _after_ Vertex shaders. So in this video the pixel shading (colors changing) are fragment shaders, whereas cell shading (toon shading) uses vertex shading, since they have to extrude from the model in order to make the outline around the models. The color of the outline are then applied by the fragment shader.

@NeoShameMan 6 лет назад

ui_wizard Wind waker don't have outline, borderland do it as a (fragment) post process, and okami just use a reverse shell since ps2 don't have shader... It's not always vertex like afro samurai, which push the second pass vertex along the normal by flattening it in the view direction.

@Blendedasian 6 лет назад

ui_wizard the technique you mentioned uses the vertex shader to upscale a pitch black copy of the model that stays right behind the normally drawn one like a bigger shadow. But this was used mostly in earlier games because it was cheap in processing power. The newer installments use one or a combination of the 2 techniques: - Interpolate normals from vertex shader and set any pixel with angle over a certain threshold to pitch black using fragment shader - Edge detect using sobel/laplace/whatever algorithm you prefer and overlay as a post processing effect on fragment shader. I also remember someone mentioning in forums a technique where a depth-map (z values) of the screen was edge-detected and overlayed to the render to make the lines.

@lawrencedoliveiro9104 6 лет назад

There are more than two kinds.

@clodgozon3968 5 лет назад

Well, there are more than that, but fragment and vertex shaders are often used than those aren't mentioned.

@alirezajahanbakhsh7890 4 года назад

I am so impressed by all of your videos! your have become my new my favorite! :)

@Slurkz Год назад

Stellar explanation! Thanks a lot. 💜

@zugolf4980 5 лет назад

Excellent, descriptive and concise introduction! Have a sub! :)

@GingerAle611 3 года назад

Wow. Finally I got an understanding what is shaders. It's a piece of code, in which you put every pixel of an object, related to this shader. It makes some calculations, depends on what nodes you put inside. Then it returns a color value for these pixels, to render it on screen.

@franklynzhu6590 5 лет назад

Thank you, this was very informative for a newbie to shaders!

@deinemamainhd 6 лет назад

Awesome. Please more videos about basics like this.

@BulletProofCupid7 6 лет назад

yay, another educational video! Looking forward to the next one :)

@paulkyle 3 года назад

That was actually helpful. Now I finally understand what shaders are 👏🔥

@lxliner 6 лет назад

wow, just week ago started to learn shaders, and this video appears!!! waiting for another video!!!

@man_vs_life 4 года назад

For a long time I had in the back of my mind just what the heck a "shader"was. Now I have some grasp of it, thank you.

@16rosati 5 лет назад

Visual node based shader editors are available and they make the learning process a lot more user friendly!

@vijaiharihar9410 Год назад

Great explanation!

@Retrofire-47 2 года назад

this was an awesome explanation

@zikomo8913 4 года назад

Another great channel, never knew Game Dev RU-vid has such great content, better late then never!

@hollaback0690 5 лет назад

Best shader intro I've seen for noobs yet!!! Very helpful and thank you for simplifying the concept so we can understand the basics

@samarthtandale9121 Год назад

Great Video and topic explanation 🙌🏼🔥🔥🔥⚡

@AllanBrunoPetersen 6 лет назад

Excellent introduction and examples, thank you. :)

@amanuelawoke8458 Год назад

Fantastic tutorial :)

@ipoh1213 4 года назад

Glad to watch this.

@Ic3q4 2 месяца назад

awww i love the channelname omg

@callum5765 6 лет назад

This is great I would be interested in knowing the differences and intro into HLSL and GLSL and how to utilize a pbr shading model based on brdf lighting (in code / the techniques not UE4 Material editor).

@kevando_gg Год назад

SUPER HELPFUL

@ronald111001 6 лет назад

I love your intellectual thought process

@birutabatuta 6 лет назад

u falling in love too, Mr. Ronald57?

@NOF4C3 6 лет назад

Hey you are really good at explaining things that even us non programmer understand a bit 👏👏👏👏 and can I ask can you make something about rigid bodies ?

@johnhammer8668 4 года назад

Thanks for precisely pointing out pixel shader is a function applied to all pixels which takes position as the argument and does not depend on the adjacent pixels. Are all the other shaders also depened only on the postion and does not care about the values of other entities ?

@tromino2598 6 лет назад

That actually makes a lot of sense. Huh. You did a good job explaining it so far. I want to see what you have to say in your future videos on the topic. :p

@Bretana 3 года назад

As someone that knows nothing about shaders, this was incredibly easy to understand. Thanks for this!

@ddud4966 6 лет назад

I always wish Photoshop had a shader language like Maya Hypershader except for 2D layers, that would be so powerful compared to their fixed blending options.

@WooMaster777 6 лет назад

Thank you! Thank you! Thank you! I LOVE your videos. They are super helpful!

@scapegoat079 3 года назад

"Have a happy day wherever you are" What a sweet way to sign off on a video hahaha. YOU have a happy day

@hafeesh 6 лет назад

love your videos!!

@ulysisxtr 6 лет назад

Awesome video! I don't think it could be explained in a simpler way...

@parallaxis261 6 лет назад

thanks! very nice explanation.

@mdjoy8037 3 года назад

Thanks, your voice is so good

@GhislainLeblanc 6 лет назад

Well done!

@StigDesign 6 лет назад

Great to see new video :D and Verry interesting :)

@paparoxo3606 4 года назад

Amazing, thank you!

@oraz. 6 лет назад

This is the best ever shader video!

@wiigame3401 5 лет назад

I'm a very young (10 years old), game developer using unity. I really enjoy your creative computer content that helps me (even though you're not using unity)when I have a question. I just wish you can upload again. :-)

@sevuszeld5015 2 года назад

thanks a lot doc

@DeadlyAlive... 6 лет назад

Awesome video! Thank yous!

@freezn6287 6 лет назад

I know im late to this video but I would like to see how refraction shaders work! plz!

@windowsforvista 6 лет назад

Thank you!

@Jose-uw3rj 6 лет назад

Thank you very much for this video, it was pretty useful for understanding shaders. I will work on Spanish subtitles for this so I can recommend this video even to people who are not good at English :D

@THEHOUSEOFSATIO 2 года назад

Thanks teacher

@lagaffe91 4 года назад

Very interesting !

@camryhsalem5139 3 года назад

just excellent

@ty_teynium 6 лет назад

@0:26 looks like the photo from Kojima productions at Siggraph showing their decima engine. They demonstrate something similar to this.

@blacksaturn8834 6 лет назад

That Okami reference made me happy :3

@abuzzedwhaler7949 6 лет назад

Damn, I'm a CG artist, and I couldn't have said it better myself!

@low-key-gamer6117 3 года назад

Hi, I have Linux and somehow the Intel open source driver is not giving me the option to adjust contrast and my colours looks washed, can I use a shader with my existing X11 compositor to get more contrast?

@RoyalRiku13 5 лет назад

Now I really want to get into graphics programming :)

@man_vs_life 4 года назад

The future asks, "Did you?"

@RoyalRiku13 4 года назад

@@man_vs_life Tbh no, but only cuz I'm focused on Data Analytics projects since that's my main focus. Obvious ones looking into COVID-19 atm

@lewallen1971 3 года назад

Super cool! Thanks. :)

@frankynakamoto2308 6 лет назад

Can you please please explain more how Swift Shader the software works and why it works so well?

@VictoriaFilmsgroup 5 лет назад

Would this shadertoy work for a full feature film color correction?

@onlyme0349 4 года назад

But how do you tell your gpu to add borders around your 3d models if it only has pixel information?

@yanivdebby9137 2 года назад

do you know a software that i can use to create clip (video) from open source shaders? thx

@nullnightsun 6 лет назад

For me i make the background scene with photorealistic rendering..... the characters with npr and special effects in 2d drawings.... and its very awsome

@kylenki 4 года назад

Thanks! :)

@cris3758 4 года назад

HOLY SHIT THAT WAS HELPFUL! Thank you!

@schmidtzcargolbull 5 лет назад

good introduction. very good even

@farfaouamohamedamine3271 5 лет назад

that s so good thank u

@bamsgian9759 5 лет назад

how could I detect specified object rather than colors? for example I want to apply water shaders, I must choose blue color bcoz the water is blue, but I won't let shaders affected to another blue color.

@bdenix1997 Год назад

doesnt ddx ddy gives you acess to the previous pixels? color in frag and vertex height in vert

@Kj16V 6 лет назад

Ooooh Now I understand why there was a character called "Phong" in the CGI cartoon, Reboot!

@robin_be 6 лет назад

This video is more about what is a pixel shader (or fragment shader). They are the most common (I guess), but I think you should've told that there are more types of shaders than just that just to prevent confusion.

@mrfincher 6 лет назад

Awesome!

@Jaba6798 5 лет назад

This is a fuqqin awesome video

@datt1144 2 года назад

So what different between shader and color grading

@dannywei3148 6 лет назад

@TheHappieCat I'm confused, Is it true that all pixels are executed all at once? because I thought each pixel is processed individually by going through the graphics pipeline (or a few in parallel, but it surely cannot be all at once can it?)

@clemdemort9613 2 года назад

Late reply but I'll answer anyways, I think you misunderstood what the graphics pipeline is exactly (and that's ok it's really a bitch!) Firstly shaders are a piece of code executed in parallel on the GPU(the video only explained "fragment shaders", there are a few others) they are "steps" in the graphics pipeline and each step transfers the data it has computed to the next step, hence each pixel doesn't go through the graphics pipeline but rather pixel shaders go though each pixel then send the computed data over to the next step, therefore you could stack pixel shaders if you wanted. Moreover It IS true that each pixel is calculated simultaneously in a shader since the GPU works by doing calculations in parallel (rather than linearly on the CPU) otherwise going through each pixel one at a time would take Ages haha!

@23kl104 4 года назад

@4:09 "there is a link in the description", I see what you did there

@Petch85 Год назад

I miss this channel

@archiethejanitor6779 4 месяца назад

so can shaders be summerized as "object surface type/properties"?

@JuaniPisula 6 лет назад

happy day for you too :D

@guiguiregismercer5720 6 лет назад

Learning shaders is my next things!

@SevenDeMagnus 5 лет назад

Thanks.

@jayat4927 4 года назад

i am from india i fell in love with u ..seeing ur IT cs knowledge ..do i deserve u

@aiwuhu 4 года назад

Perv from India

@WillVRam 3 года назад

What are your favorite shaders in games? and why. Thanks

@Creuilcreuil 6 лет назад

for the checker board pattern you could use, (x + y) % 2

@meiamsome 6 лет назад

Perhaps even faster: (x ^ y) & 1

@VirtualTurtleGames 6 лет назад

Oliver Wright I know I'm a bit late, but what does this do? The operators specifically :) I've never written/ seen this coding language before but it looks quite interesting!