Why can't I get anything to display with this code?
#include <iostream>
#include "GL/glfw.h"
#ifndef MAIN
#define MAIN
#include "GL/gl.h"
#include "GL/glu.h"
#endif
using namespace std;
void display();
int main()
{
int running = GL_TRUE;
glfwInit();
if( !glfwOpenWindow( 640,480, 0,0,0,0,0,0, GLFW_WINDOW ) )
{
glfwTerminate();
return 0;
}
while( running )
{
//GL Code here
display();
glfwSwapBuffers();
// Check if ESC key was pressed or window was closed
running = !glfwGetKey( GLFW_KEY_ESC ) &&
glfwGetWindowParam( GLFW_OPENED );
}
glfwTerminate();
return 0;
}
void display()
{
glClearColor(0, 0,0, 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
glLoadIdentity();
gluLookAt(0, 0, 5, 0.0, 0.0, 0.0, 0, 1, 0);
glScalef(1.0f, 1.0f, 1.0f);
glTranslatef(0, 0, -2);
glBegin(GL_POLYGON);
glColor3f(1.0, 0.2, 0.2);
glVertex3f(0.25, 0.25, 0.0);
glVertex3f(0.75, 0.25, 0.0);
glVertex3f(0.75, 0.75, 0.0);
glVertex3f(0.25, 0.75, 0.0);
glEnd();
glFlush();
}
