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How Shaders Work (in OpenGL) | How to Code Minecraft Ep. 3

Join the Discord:   / discord   Follow me on Twitch:   / gameswthgabe   In this episode I do a deep dive into the code and concepts behind GLSL shaders. I go over everything from how to construct them, compile and link them, and execute them on the GPU to how to think about shaders conceptually. This is the next episode in the Coding Minecraft tutorial series. In the next episode I will be covering dynamic textures and texture UVs. Challenges: https://github.com/codingminecraft/Mi... Planet Shader (HamzaHutchinson): https://www.shadertoy.com/view/llj3zV Plus Shader (Nimitz): https://www.shadertoy.com/view/4slXW7 Sierpenski Fractal Shader (Klems): https://www.shadertoy.com/view/XljSWm 3Blue1Brown Linear Transformations:    • Linear transformations and matrices |...   Shader Versions: https://en.wikipedia.org/wiki/OpenGL_... GLSL Builtin Variables: https://www.khronos.org/opengl/wiki/B...) Vector Constructors: https://www.khronos.org/opengl/wiki/D... Vector Types: https://www.khronos.org/opengl/wiki/D... glCreateShader: https://www.khronos.org/registry/Open... glUniform: https://www.khronos.org/registry/Open... Qualifier Order: https://www.khronos.org/opengl/wiki/T... My code: https://github.com/codingminecraft/Mi... Bookmarks: 0:00 Intro 1:00 Subscribe! 1:13 Vertex Shader Transformations 3:31 Coding the Transformation Matrix 4:23 Coding the View Matrix 5:48 Coding the Projection Matrix 7:04 How GLSL Works 10:41 GLSL Custom Constructors 11:15 Vector Swizzling 12:43 Compiling Shaders 13:49 Error Checking Compilations 15:30 Linking Shaders 16:24 Error Checking Linking 17:19 GLSL Reflection 19:56 Uploading Uniforms 21:11 In/Out/Flat Keywords 24:00 Shaders Conceptually Shaders at the end of the video: (by Kali): https://www.shadertoy.com/view/NlsXDH (by knarkowicz): https://www.shadertoy.com/view/XtlSD7 (by EvilRyu): https://www.shadertoy.com/view/Xd3fR7 Book of Shaders: https://thebookofshaders.com/ Music from Music Vine Fire (by Raft): https://musicvine.com/track/raft/fire The Gift (by Onsoho): https://musicvine.com/track/onsoho/th... Blue Waltz (by Yoav Ilan): https://musicvine.com/track/yoav-ilan... “The Soft Block” licensed via Music Vine: 5KEXLAZZUKPIVGS2 Muse (by Braden Deal): https://musicvine.com/track/braden-de... Tell Your Story (by Adi Goldstein): https://musicvine.com/track/adi-golds... “Fickle” licensed via Music Vine: ZX7THVN1L1UQWYD0 --------------------------------------------------------------------- Website: https://ambrosiogabe.github.io/ Github: https://github.com/ambrosiogabe Here are some books I recommend if you want to learn about game engine development more thoroughly. I do not profit off any of these sales, these are just some books that have helped me out :) My Recommended Game Engine Books: Game Engine Architecture: https://www.gameenginebook.com/ Game Physics Cookbook (Read this before the next physics book): https://www.amazon.com/Game-Physics-C... Game Physics (Ian Millington): https://www.amazon.com/Game-Physics-E... Game Programming Patterns (Free): https://gameprogrammingpatterns.com/ My Recommended Beginning Game Programming Books: JavaScript Game Design: https://www.apress.com/gp/book/978143... My Recommended Java Books: Data Structures/Algorithms: https://www.amazon.com/Data-Structure... LWJGL (Free, but I haven't read this thoroughly): https://lwjglgamedev.gitbooks.io/3d-g...