Code examples for opening windows for various purposes in very few bytes
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blackle 6ecfc7a26e make switch statement an if statement 7 months ago
Section-Header-Stripper @ a4c7aea4f0 Add submodules, better make 10 months ago
noelfver @ 3022b4ef8b Remove gtk-webkit and replace with sdl2-opengl 7 months ago
vondehi @ 859c6c11d0 Add submodules, better make 10 months ago
.gitignore Remove gtk-webkit and replace with sdl2-opengl 7 months ago
.gitmodules Remove gtk-webkit and replace with sdl2-opengl 7 months ago
Makefile Fix #1 by adding debug makefile variable 7 months ago
README.md Fix #1 by adding debug makefile variable 7 months ago
gtk-opengl.c Remove gtk-webkit and replace with sdl2-opengl 7 months ago
index.html initialize webgl in a really shitty unoptimized way 10 months ago
index.html.inc woops, forgot index.html.inc 9 months ago
sdl2-opengl.c make switch statement an if statement 7 months ago
shader.frag Remove iTime from shaders, render each only once 10 months ago
shader_minifier.exe Opengl with gtk example 10 months ago
xlib-opengl.c Sizecode xlib a bit 10 months ago

README.md

Linux-OpenGL-Examples

Here are examples of rendering a shader full screen on linux. All of these examples do it in less than 2 kilobytes thanks to vondehi and copious amounts of ELF stripping.

There are three examples, each using a different library to open a window and get an opengl context.

xlib-opengl - 1492 bytes

Vanilla xlib is the largest of the bunch and the most brittle. It is highly not recommended to use xlib in a demo unless you cannot assume these other libraries will be on the system. (note, unlike all the other programs that close with the window manager's quit key combination, this program must be closed with ESC.)

gtk-opengl - 1382 bytes

GTK is a step up from xlib, being both smaller and more robust. If the compo you are entering doesn't allow using SDL2, GTK is an ok alternative. Before switching to GCC 8.3.0, this was 100 bytes smaller than it is now. I am not sure why it is larger, but this likely means it can be sizecoded/stripped further.

sdl2-opengl - 996 bytes

Using SDL2 will give you very small binaries. Use SDL2 whenever you can, as it also has a few other useful subsystems at minimal cost (for example, audio.)