Kerbal Space Program

#define _GNU_SOURCE

#include <string.h>

#include <stdio.h>

#include <stdlib.h>

#include <dlfcn.h>

#include <GL/glx.h>

GLXFBConfig *glXChooseFBConfig(Display *dpy, int screen, const int *attrib_list, int *nelements)

{

    for (int *attr = (int *)attrib_list; *attr != None; attr += 2) {

        if (attr[0] == GLX_ALPHA_SIZE) {

            attr[1] = 0;

        }

    }

    typeof(glXChooseFBConfig) *old_fbconfig;

    old_fbconfig = dlsym(RTLD_NEXT, "glXChooseFBConfig");

    return (*old_fbconfig)(dpy, screen, attrib_list, nelements);

}

__GLXextFuncPtr glXGetProcAddressARB(const GLubyte *name)

{

    if (strcmp((const char *) name, "glXChooseFBConfig") == 0)

        return glXChooseFBConfig;

    typeof(glXGetProcAddressARB) *old_getproc;

    old_getproc = dlsym(RTLD_NEXT, "glXGetProcAddressARB");

    return (*old_getproc)(name);

}