#define GL_GLEXT_PROTOTYPES
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glut.h>
#include <stdlib.h>
#include <stdio.h>

void init(void)
{
  /* 64 bits (8x8 bitmap), stipple pattern; */
  GLubyte bitmap[8] = {0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55};
  GLuint buffers[1];
  GLubyte data[64];

  glOrtho(0, 100, 0, 100, 0, -1);

  glPixelStorei(GL_PACK_ALIGNMENT, 1);
  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);

  glGenBuffers(1, buffers);
  glBindBuffer(GL_PIXEL_UNPACK_BUFFER, buffers[0]);
  glBufferData(GL_PIXEL_UNPACK_BUFFER, 8, bitmap, GL_DYNAMIC_DRAW);

  glBitmap(8, 8, 0, 0, 0, 0, 0);
  glReadPixels(0, 0, 8, 8, GL_RED, GL_UNSIGNED_BYTE, &data);

  glDeleteBuffers(1, buffers);
}


int main(int argc, char** argv)
{
   glutInit(&argc, argv);
   glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
   glutInitWindowSize (500, 500);
   glutInitWindowPosition (100, 100);
   glutCreateWindow(argv[0]);
   init();
   return 0;
}