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What should be added to make this drawing function valid?

void draw (void)

{

    glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glTranslatef (0, 0, -10);

    

    glColor3f (1.0, 1.0, 0.0);

    glBegin (GL_QUADS);

    glVertex2i (1, 0);

    glVertex2i (1, 1);

    glVertex2i (-1, 1);

    glVertex2i (-1, 0);

    glEnd ();

    

    glFlush ();

}

Answer

Correct Answer:

glPushMatrix () 

Explanation:

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