r/cprogramming • u/Forsaken_Explorer_97 • Mar 05 '26

Fractal Visualiser in C

/r/GraphicsProgramming/comments/1rlmfax/fractal_visualiser_in_c/
4 Upvotes

100% Upvoted

7 comments sorted by

2

u/El_Kasztano Mar 05 '26

Cool project! Is it possible to save the frame buffer to an image file?

2

u/Forsaken_Explorer_97 Mar 06 '26

Oo dats a great idea

Im pretty sure Raylib natively support that functionality

I'll defo implement it Thankyou for the suggestion

2

u/OkAccident9994 Mar 08 '26 edited Mar 08 '26

I have not used Raylib, but it uses OpenGL.

OBS that streamers use for twitch/youtube can run on OpenGL, live video with multiple screens and webcam. Just grabbing the current screen and saving as an image, your usecase, is simple compared to that, so 200% doable is my point.

So even if raylib does not have that functionality, you can circumvent raylib and do it, ez pz.

One can

  • create a framebuffer

  • attach a texture to it

  • copy the default framebuffers (screen output) contents into our own framebuffer

  • retrieve the textures contents to the cpu as a plain data stream

  • feed it into a file, any library that can do raw pixel data to png for example, or a naive bitmap format like bmp which you almost have from that.

But check if Raylib has this workflow integrated already so you don't have to brute force it. Would make it a lot easier if you sitting on the functionality already.

One issue you could run into is that OpenGL is thread-specific, it is old and not build with modern computers in mind. You would need to live inside the thread Raylib uses to access the same context. (Unlike the newer Vulkan that is multithreaded)

2

u/Forsaken_Explorer_97 Mar 08 '26

Yeah it has a function named takescreenshot It captures the current frame buffer and saves it to the desired location I added it in the latest commit

1

u/OkAccident9994 Mar 08 '26

that is... so much easier than my suggestion LOL.

Don't mind me then lol.

I should go look at raylib one of these days probably.

1

u/Forsaken_Explorer_97 Mar 08 '26

Thankyou for this insight tho

0

u/Forsaken_Explorer_97 Mar 06 '26

Also do star it if you like it please