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

static int tris=1000;

void init(void)
{
   glClearColor (0.0, 0.0, 0.0, 0.0);
   glShadeModel(GL_FLAT);
   glEnable(GL_DEPTH_TEST);
}

void display(void)
{
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
   
   glBegin(GL_TRIANGLES);
   
   for (int i=0; i<tris; i++){
      glColor3f(1.0, 1.0, 1.0);
      glVertex3f(0.0, 0.1, 0.1);
      glVertex3f(0.4, 0.2, 0.2);
      glVertex3f(0.1, 0.3, 0.3);
   }
   
   glEnd();
   glFlush();
}

void reshape(int w, int h)
{
   glViewport(0, 0, (GLsizei) w, (GLsizei) h);
   glMatrixMode(GL_PROJECTION);
   glLoadIdentity();
   gluPerspective(20.0, (GLfloat) w/(GLfloat) h, 1.0, 30.0);
   glMatrixMode(GL_MODELVIEW);
   glLoadIdentity();
   glTranslatef(0.0, 0.0, -3.6);
}

int main(int argc, char** argv)
{
   glutInit(&argc, argv);
   glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
   glutInitWindowSize(400, 400);
   glutInitWindowPosition(100, 100);
   glutCreateWindow(argv[0]);
   init();
   glutDisplayFunc(display);
   glutIdleFunc(display);
   glutReshapeFunc(reshape);
   glutMainLoop();
   return 0;
}