+ /* Clear background for GL_ONE */
+ glEnable(GL_COLOR_MATERIAL);
+ glDisable(GL_TEXTURE_2D);
+ glColor4f(0.0, 0.0, 0.0, 0.0);
+ glBegin(GL_QUADS);
+ glVertex3f(-0.75, 0.0, 0.0);
+ glVertex3f(-0.75, 0.5, 0.0);
+ glVertex3f( 0.75, 0.5, 0.0);
+ glVertex3f( 0.75, 0.0, 0.0);
+ glEnd();
+
+ /* Setup for textures */