Sets up OpenGL for communication with GPU, proceeds to do all pixel calculations on the CPU and use the GPU as a pass through. Jokes aside, nice work 👍 I think its really creative to use the texture buffer like this and given that its low rez the performance isn't really needed anyway.

Just a little correction, OpenGL doesn't handle your input, that's GLFW, which is the framework that creates the OpenGL context and Window, OpenGL is just for rendering. Awesome stuff though

there are lots of good reasons for making your own engine. - for fun - avoiding bloat - making it only have what you need - performance - having it support niece features you want - it is your own (you won't have to pay anyone else for using it, since it is your own) - getting better at programming (when you use something like unity you learn how to make something using unity, but when you make a game engine you begin to learn how to make a game by yourself, so you get better at programming, and in case unity ever goes away, you can continue making games without it) and more that I don't remember atm. A portion of a Jonathan Blow talk on this: kzfaq.info/get/bejne/ibWkq82AsdnYYp8.html Another portion of a Jonathan Blow talk: kzfaq.info/get/bejne/mbJmqc-mzcyvp2w.html

Dude, I don’t think I could ever do this. This is genuinely one of the better things I’ve seen.

this was honestly one of the chadderbox videos of all time

Wow this is impressive. I have always wanted to do this, but never understood how to. Great video dude! Amazing job 😊

This was great! How much torture would it be to create bindings for something like Haskell or COBOL lmao

Insanely well timed video. I was thinking of making a game engine just to swap the engine of another game. Hopefully I can learn something from this!!

Whoaaa, this video has so many coincidences with me it's crazy. Everything from your thought process choosing learning OpenGL, the tutorial you used, the idea for a game engine that would run in the shader code instead of in the cpu code. All the same. My idea was inspired by Noita, trying to see if a game like it could be optimized further by runing it's pixel simulations on the gpu. It might be use a cellular automaton to define the physics too, and the double buffering in the rendering pipeline is also coincidentally necessary for the cellular automaton to be stable. It was so perfect. But I never got past the point where you ended, i.e. the texture page. I know that's probably all I need, but now I'm procrastinating haha. Maybe your project will give me the push I need.

I genuinely laughed out loud when you mentioned pipelining. It had approximately 0 effect on the speed of that loop. That was 100% due to making a O(1) algorithm into a polynomial.

Superb video. I do think you're quite, quite mad for building your own but there were great lessons in there - especially about performance. I'd probably use Rust for low level. Tantan has had some good experience with wrappers for opengl.

This is neat, and a good learning experience for sure. I've been doodling with Vulkan for a few years now. It's really REALLY good, but it's also a ton of work. I've been building my own general purpose game engine for a year now. I'm still working on the basic core fundamentals of it. I wanted to make my own reflection system so I'm writing my own C++ parser... I'm still at it. It's been pretty fun so far though.

Cool to see you take on your own framework! Great video

This is such a cool concept and you explained it in a way that was both interesting and understandable. Subscribed!

This is a fantastic video, nice work! I made a game engine using the opengl wrapper opentk so I could use c#. Trying to create a game engine gives you so much insight into how most game engines work and is great for learning new programming concepts.

finally the long 10 month wait is over, the only classic game dev youtuber to not die in the nuclear blast or something I mean they all just disappeared, in some cases that was for the better tho *cough *cough Barji, There is some kind of conspiracy I tell you.

This is great, explained what the engine does without fancy frills.

NEW CHADDERBOX!!!

I feel like there is another good reason now to make a game engine...

You finally came back!! (Cool video btw)

I can think of a couple of reasons to make a game engine now.

you could add lua bindings. You can already use lua code in C and viceversa, so it shouldn't be hard, and the pool of reserved keywords is quite small

This is pretty cool! Much better than what I've done lol.

Using function pointers for user to specify there start, update and finish is the correct way so good job. It allows user not to worry about going into your engine code. Only thing bad about your engine is there no audio.

This is pretty awesome! I feel like that this could be made pretty well with SDL2 instead of OpenGL, it’s really lightweight and handles everything, like windows, rendering, input, sound, you name it!

1:51 correction: these are not graphics frameworks, these are graphics API's. graphics frameworks are the high level, abstracted stuff that you use to render stuff on screen, which then a graphics API is used for that job. also, did you ever check on the godot engine?

Goodness your brain is big, unlike my smooth one. Some impressive stuff being done here mate! :D

I think since you're just rendering a texture to the window, you could probably drop OpenGL entirely and do software rendering with something like GLFW. I'm not sure how well that would work with scaling...but that would allow it to run entirely on the CPU

0:20 if you want a bigger challenge, do it in C, or worse x86 assembly

Trust the boxman to release a banger like this fr.

Chadderbox is the perfect example to why you should learn about GLSL and Fragment Shaders!

By the way if you are using vscode what is your theme? I really love how

"if i went much lower level i'd be making my own graphics card" - LOL very nice work

“What did you do over the weekend “ “I made a game engine”

Dude really said programming using pointers in cpp makes life easier. I use pointers on daily basis I still don't understand them fully. What a Chad.

"General Kenobi! You are a bold one." Shouldn't I answer this to the intro?

I’m really struggling to find an easy to install game library that works on VS code do you have a good library or a good ide for c++?

That double for loop with an if statement was not your problem. Compiling it with -O3 would've increased the performance of it insanely. Also, your renderer was one way. No need to get pixels back from opengl. Just use you cached array?!

What editor theme are you using, it looks really nice :)

I'm making a basic 3d game using Modern OpenGL and its making me literally cry but it's rewarding.

this is awesome

It's not cheating, it's keeping your will to live

Hey, I don’t know if you still respond to comments on this video but can you tell what app did you use to code. Did you use VS code or something else? And if you did, how’d you set it up?

Real programmers program their own OS to make games. :D

Welcome back!

actually something that has a lot of potential for schools

3:40 but if ur just using a texutre then why dont just do it in unity?

i definitely had to use learn opengl to make my game engine

Great info. I just want to know how to create a Lumen system like UE5. The day when someone discovers it will be revolution, because is needed for the open source world.

the speed myth is still a myth. opengl is not slower than the other two. and it saddens me that all sorts of people who started making engines believe that : (

For a programming language, maybe Squirrel or forth or tinyscheme. Something tiny.

7:40 gonna "umm actually" this and say that in the code you gave you're using references, not pointers, also in C++ you can use std::function instead of a reference or pointer to accept a function as an argument just so you know

u can make it so it only renders a pixel if it is different from the pixel at that xyz coord one frame ago!

OH MY GOD NEW CHADDERBOX VIDEO!!!!!!!!!!!!!!!!!!!!!!!!!! I cant believe it. HOLY SHIT. NO WAY UOGHSBOUIDBVIPSBDVYUIBS!!!!???

lit

Been SO LONG omg

are there any good tutorial for making a Game Engine?

Please port this to arnoldc. ArnoldC doesnt support inputs pixel based rendering and libraries, but port it anyway.

O(N) set_pixel routine wins you an award!

Look at this internet micro-celebrity :0 This is mad stuff, I can barely use Godot for game making stuff, you're light years ahead mate lol

i think creating bindings for intercal would fit the engine

i mean, still impressive tbh

OpenGL definitely doesn't perform worse than DirectX, in fact you could even get VK or DX12 like performance out of it if you know what you're doing. These "frameworks" are actually graphics APIs that send commands to the GPU, period. The performance you get is almost entirely dependent on your engine design/subsystems, draw call optimizations, etc.

Python. I was making a CLI chess implementation in Python yesterday, now you've inspired me to try to make a graphical board in 64*64 pixels. Hardest part might be designing readable sprites to fit within the checkboard lol

That pixelndex calculation is wrong and works only because you have square window. It should be: ((y * windowWidth) + x) * 3 also the bounds checking should not allow x or y to be the width or height respectively.

Vulkan time!

What if you make a game using the Win32 API and C?

OPEN GL: the true dog Direct X: Microsoft’s “implementation” of OGL, but it is NO LONGER A STATE MACHINE (open gl IS). Vukan: literally open GL 2023. At the end of the day, they all literally evolved from Open GL. 🙃

I'm curious to know why you chose C++ of all the languages to make a game engine in

If you're going to just manually put every pixel into a texture you should just use software rendering

nice

You should port it to python, even though pygame is a much better library.

You should take a hourly payment for using your game engine, where the cheapest option is 50$

He back

Good, now write it in Nim.

Gonk :]

POV better dani:

next time actually learn how to use shaders and how to use them to run stuff on the gpu because now it is like doing all the rendering using the cpu which is not good at all

try odin instead of C++ it is way simpler and has libs ready

i think `Lua` can be a good langauge to use

How about making bindings for Rust?!

Assembly lol just cause (I am curious if it can do much)

bro called glfw opengl...

My stupidity outweighs yours

you should make it work with lisp

You could have just used SDL2 and you'd be drawing pixels in software in no time.

Well, your video is already quite old, so maybe you already figured these things out by yourself, but it looks like you don't quite understand the purpose of OpenGL. You're not supposed to send an array of pixels as a texture and have it render there. The whole point of OpenGL is that you send to it primitive shapes and then it figures out by itself how the pixels should be. It can do this much faster than CPU code, because it runs on the graphics card. If you already know how the pixels should be, then you did all the rendering in the CPU, and you don't need OpenGL. What you're doing is rendering everything in the CPU, sending all the stuff to the graphics card, which puts them on the screen without doing anything. It would be more straightforward, faster, and give you code with less dependencies if you just opened a pixmap to your OS display server and transfered the pixels there. In Linux Xlib does this, I don't know about Windows, but pretty much any GUI toolkit should have a way to open a pixmap.

You should make bindings for C#

Why not just using other engine or game frameworks that already exists for making 2d pixelated games? Godot or Cocos2d for example? Well if your final goal is to enjoy tech development like graphics programming or making 2D physics engine from scratch - it's totally fine. But if your goal is to focus more on specific gameplay systems, story, characters, then it should be smarter to just use existing tech in order to improve your professional skills as an actual gamedev.

make rust bindings

Sound?

Wait.... what about audio?!

20k views 4 days ago

*Good afternoon. I'm from Donetsk. And so, he made a game engine in C ++, given that he fully learned to be a programmer WITHOUT PROBLEMS. I am very jealous and will immediately move to the UK. In order to learn my specialty, start a new life, and forget about this 10-year war in Ukraine.* *I am very sad. I was not destined to be in this country, where there has been a war in Ukraine for 9 years.*

Bread.

I am making a 4D game engine do you Wana colab

Haha yeah I’m stupid too :)

Is a unity easyer then a own engine yes Is it better no

Less self doubt and bad criticism please.

I'm also not very bright, but lots of people much smarter than me have all said Vulkan is basically horrible. And who am I to disagree with them. However, OpenGL is really just a graphics library whereas DirectX does a bit of everything. Oh and I think this engine needs ported to Brainfuck and also F#. As a stretch goal... VBA. Chop chop.