Modern OpenGL Tutorial - Compute Shaders

In this tutorial I'll show you how to use Compute Shaders in your OpenGL projects.

*Source Code*

*OpenGL Documentation*

*Discord Server*

*Patreon*

*Timestamps*
00:00 Intro
00:10 What are they used for
00:45 How they work
01:22 Compute Shader Example
01:32 Creating Compute Shaders
01:42 Dispatching Compute Shaders
02:28 "Rendering" Compute Shaders
02:45 Compute Shaders Source Code
03:27 Inputs
05:03 Ray Tracer Code
05:35 Warps/Wavefronts
05:59 Improving Performance
06:53 Shared Variables
08:40 Atomic Operations
09:43 Group Voting
11:01 Outro

*References*

#opengl #opengltutorial #computergraphics #cpp #visualstudio #3dgraphics #computeshaders #modernopengl

[BoyBaykiller]

Feels good seeing high quality content on modern (not the 3.x modern) OpenGL. Thanks!
One thing about the shader group vote: It's 4.6 core functionality so you dont have to append the "ARB" suffix. Otherwise it would be using the ARB extension instead of core and somtimes their specification is different. You can then even remove the requiring of the extensions.

[georgiyx]

Thank you so much, i've struggled getting my compute shaders to work and with the help of you, they now work :)

[rose]

Thank you soo much for these compute shader videos!! They are absolutely amazing and by far the best resource I've found for making compute shaders :D

[krakacats]

i hit the 1k like, haha. Also very great video! I really couldnt find anything useful online for learning compute shader, but this really helped me understand it. Thanks

[jakestein]

Perfect timing. I was just starting to play around with compute shaders this week.

[kylevondra]

As usual, another banger video. Love to see it, keep up the great work!!

[Trandunz]

Love your work Victor, i can still hear your voice when im doing my opengl :)

[codeblend]

You are simply amazing. Even a person like me gets everything (when explained by you).

[mitchellkelly]

Every time I come back to the channel the production just keeps getting better and better! I have always wondered how to do animation within OpenGL. Would animation or something along those lines be possible as a tutorial in the future? Thank you for your hard work!

[jawadch]

Amazing video! Covered everything I needed!

[jeffcummings]

Great explanation, thanks! I decided that maybe I was ready for compute shaders, but now I know that's still a bit of a ways away, but within reach, and this helps with understanding when I may actually need them, however experimentation is warranted! Thanks again.

[clemdemort]

Very nice of you to put a like counter in the description of your video! :)

[alexandru-cristiansandu]

Interesting tutorial for some of the more modern capabilities of OpenGL, you definitely become better at making such videos!

[darkarchon]

Great video. This clarified a lot of things that mystified me the past couple of days.

Question about 5:08 where you normalize the range from [0, 1] to [-1, 1]. Is this to match OpenGL clip space, or is there another purpose?

[bithigh]

I've just subscribe!! Awesome video!

btw, which video editor do you use?

thanks for sharing

[kalebbruwer]

Thanks. I was missing one line: glUseProgram() and a small eternity later I figured that out thanks to this video

[arlynwalker]

s/o to you from china bro, working absolutely well

[SirCobraXI]

7:55 Hey, so this caused quite a bit confusion to me. So i did some research and it seems barrier() has implicit shared memory synchronization, so the other call is not needed. However, this seems to not apply for other types of memory, for which you may still need an extra sync call. Also sadly it is not possible to sync a global memory between all thread groups because they are not always executed at the same time.

[floriansteinmann]

Hey can you please show us how to make a galaxy shader

Should worl similar to endportal shader in minecraft if possiblr

[gergelybertalan]

@Victor this is awesome!
Where do you learn these things from?