Ejemplo de Triangle OpenGL
glBegin(GL_TRIANGLES);
glColor3f(1.0f, 0.2f, 0.3f);
glVertex3f( 0.0f, 0.5f, 0.0f);
glVertex3f( 0.5f, -0.5f, 0.0f);
glVertex3f(-0.5f, -0.5f, 0.0f);
glEnd();
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