search

gmarino2048 / 64bit-os-tutorial

This OS Tutorial expands on the fundamental concepts covered in cfenollosa/os-tutorial and covers entering long mode on the x86_64 architecture. It also uses clang rather than relying on an external crosscompiler. I plan on keeping it up to date, so feel free to submit an issue!
MIT License
172 stars 19 forks source link

GUI tutorial? (Possible Chapter 4 concept) #5

Closed twisted-nematic57 closed 2 years ago

twisted-nematic57 commented 2 years ago

I know you said you were focusing on other projects right now. If that still applies, go ahead and ignore this, really no issues. :)

If not, then is it possible for you to cover some kind of very very simple GUI code? I'm hopelessly lost on controlling individual pixels and (eventually) drawing them through a physical graphics card and not the CPU because it's slow.

gmarino2048 commented 2 years ago

Hi @HackerDaGreat57, unfortunately this is not within scope of this tutorial. For controlling a screen with legacy technologies, you can look at this page on the OsDev Wiki. VGA is probably your best bet for getting started with CPU graphics. Unfortunately, there are far too many types of different graphics cards for that to be feasible. Many graphics cards manufacturers (with the exception of NVIDIA) have released technical documentation or open-source drivers you can use as reference. If you're curious about it, I would recommend taking a look at AMD's open-source drivers for examples on more modern hardware.

twisted-nematic57 commented 2 years ago

Thanks a lot for the reference, I will look into it.