#include <stdio.h>
#include <GL/gl.h>
#include <GL/glx.h>

int
main( int argc, char *argv[]) {
    Display *display;
    int fb_attrs[] = {
        GLX_DRAWABLE_TYPE, GLX_PBUFFER_BIT, None };
    int pbuf_attrs[] = { GLX_PBUFFER_WIDTH, 8, GLX_PBUFFER_HEIGHT, 8, GLX_PRESERVED_CONTENTS, False, None };
    int config_count = 0;
    GLXFBConfig *configs;
    GLXContext new_context;
    GLXPbuffer pbuf;

    printf( "Opening X display...\n" );
    display = XOpenDisplay( NULL );

    if( !display ) {
        printf( "Could not open X display.\n" );
        return -1;
    }

    printf( "Choosing framebuffer config\n" );
    configs = glXChooseFBConfig(
        display, DefaultScreen( display ), fb_attrs, &config_count );

    if( !config_count ) {
        printf( "No frame buffer configurations available. Which is weird.\n" );
        return -1;
    }

    new_context = glXCreateNewContext(
        display, configs[0], GLX_RGBA_TYPE, NULL, True );

    if( !new_context ) {
        printf( "Failed to create context.\n" );
        return -1;
    }

    pbuf = glXCreatePbuffer( display, configs[0], pbuf_attrs );

    if( pbuf == None ) {
        printf( "Failed to create XGL pixel buffer.\n" );
        return -1;
    }

    if( !glXMakeContextCurrent( display,
        pbuf,
        pbuf,
        new_context ) ) {
        printf( "Failed to set context current.\n" );
        return -1;
    }

    glXDestroyPbuffer( display, pbuf );
    glXDestroyContext( display, new_context );
    printf( "Success\n" );
    return 0;
}