OpenGL - 흑색 바탕에 백색 사각형 그리기

glBegin(), glVertex3f() 사용하여 그리는 예제 설명은 추후 예정

#include "DrawRect.h"
 
void drawRect()
{
    glClear(GL_COLOR_BUFFER_BIT);
    glBegin(GL_POLYGON);
    glVertex3f(-0.5,-0.5,0.0);
    glVertex3f(0.5,-0.5,0.0);
    glVertex3f(0.5,0.5,0.0);
    glVertex3f(-0.5,0.5,0.0);
    glEnd();
    glFlush();
}
 
void drawRect(int argc, char** argv) {
    glutCreateWindow("OpenGL Drawing Example");
    glutDisplayFunc(drawRect);
    glutMainLoop();
}