#include <GL/glut.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <assert.h>

#define WINDSIZEX 100
#define WINDSIZEY 100

GLint maxDepth, maxClientDepth, currentDepth;

void init(void)
{
  glGetIntegerv(GL_ATTRIB_STACK_DEPTH, &currentDepth);
  printf("current stack depth %d\n", currentDepth);
  assert(currentDepth == 0);

  glGetIntegerv(GL_CLIENT_ATTRIB_STACK_DEPTH, &currentDepth);
  assert(currentDepth == 0);

  glGetIntegerv(GL_MAX_ATTRIB_STACK_DEPTH, &maxDepth);
  glGetIntegerv(GL_MAX_CLIENT_ATTRIB_STACK_DEPTH, &maxClientDepth);

  printf("max stack depth %d\n", maxDepth);
  printf("max client stack depth %d\n", maxClientDepth);
}

void test()
{
  int i;

  while (GL_NO_ERROR != glGetError());

  for (i = 0; i < maxClientDepth; i += 1) { 
   // printf("%d ", i);
    glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS);

    if (GL_STACK_OVERFLOW == glGetError()) {
      exit(1);
    }
  }

  for (i = maxClientDepth; i > 0; i -= 1) {
    glPopClientAttrib();
  }

  glPopClientAttrib();
  if (GL_STACK_UNDERFLOW != glGetError()) {
    printf("PopClientAttrib: Did not Set GL_STACK_UNDERFLOW\n");
    exit(-1);
  }
}

void display(void)
{
  glViewport(0, 0, WINDSIZEX, WINDSIZEY);
  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  gluOrtho2D(0, WINDSIZEX, 0, WINDSIZEY);
  glMatrixMode(GL_MODELVIEW);
  glLoadIdentity();

  test();
}

int main(int argc, char** argv)
{
  glutInit(&argc, argv);
  glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
  glutInitWindowSize(WINDSIZEX, WINDSIZEY);
  glutInitWindowPosition(100, 100);
  glutCreateWindow(argv[0]);
  init();
  glutDisplayFunc(display);
  glutMainLoop();
  return 0; 
}