Question

i have a program that does some GPU computing with Optional OpenGL rendering.
The use dynamic is as follow:

1. init function (init GLEW being the most relevant).
2. load mesh from file to GPU (use glGenBuffers are related functions to make VBO).
3. process this mesh in parallel (GPU Computing API).
4. save mesh into file.

my problem is that when mesh is loading i use opengl calls and wihout context created i just
get segmentation fault.

Edit: Evolution of the problem:

1. I was missing GL/glx.h I thought that GL/glxew.h included it, thanks to the answers that got fixed.
2. I was missing glXMakeCurrent; and therefore it was having zero contexts.
3. After this fixes, it works :).

also thanks for the tools suggestions, i would gladly use them it is just that i needed the low level code for this particular case.

Answer 1

i tried making a context with this code ( i am using glew, so i change the header to GL/glxew.h but the rest of this code remains the same)

Don’d do it. glxew is used for loading glx functions. You probably don’t need it.

If you want to use GLEW, replace GL/gl.h with GL/glew.h leave GL/glx.h as it is.

X11 and GLX are quite complex, consider using sdl of glfw instead.