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OpenGL Smooth Polygon

I am trying to make this a smooth polygon using OpenGL, but it is not doing anything. Can someone please explain what I am doing wrong?

glColor4ub(r, g, b, a);

glEnable(GL_POLYGON_SMOOTH);
glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST);

glBegin(GL_QUADS);
        glVertex2i(x, y);
        glVertex2i(x1, y1);
        glVertex2i(x2, y2);
        glVertex2i(x3, y3);
glEnd();

glDisable(GL_POLYGON_SMOOTH);
glHint(GL_POLYGON_SMOOTH_HINT, 开发者_运维技巧GL_DONT_CARE);

Thanks in advance!


This method to smooth rendering is way out of date. It would be better to use multisampling with the GL_ARB_multisample extension.

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