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flat assembler > Linux > Smallest possible gui app?

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vivik



Joined: 29 Oct 2016
Posts: 314

Smallest possible gui app?

Can you write something like, window that displays a blue square on a black background, and this square moves when you press arrow keys?

Something with minimal use of libraries, and that even uses syscalls directly instead of using libc. Studying musl internals may help here.

I'm not sure what api you should use for this exactly, maybe x window system? Or maybe something like gtk/qt? Or framebuffer? What is most widespread, what is most lowlevel/fast?

I'm trying to do this for windows right now, would be nice if somebody would study this for linux in parallel. It's quite a fruitless job, the only advantage is being able to say that you know every byte in your program.
Post 14 Apr 2018, 18:08
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vivik



Joined: 29 Oct 2016
Posts: 314

Post 15 Apr 2018, 14:24
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donn



Joined: 05 Mar 2010
Posts: 90

A long time ago, SDL was pretty common. It was cross-platform and I was able to get it to work pretty easily. It was also supposedly powerful, making it a candidate for 3D apps. I just looked at their website and I think they said Valve used it.

A more minimal approach may be with syscalls, curious what you end up picking. I looked up what NVidia's OpenCL samples used (my Linux setup is not very functional at the moment, so I can't really install them) and I think they mention:


Quote:
for many Linux distributions do not include the necessary OpenGL, GLUT, GLU, GLEW,
X11, Xi, Xlib, or Xmi headers or libraries

in the Linux variants. Vulkan's samples seem to use:


Quote:
Libraries that are not used by the SDK, but which may be useful for developers and which may be required for templates Currently, GLM and SDL are included

with their windowing also. Good luck...
Post 16 Apr 2018, 01:01
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