they particles are actually culled from the starfield when their center point goes out of the frustum, so they pop off while sometimes a large portion of them is still visible.
should either check all 4 points of the quad or intelligently check a point that is not its center point ( ie if its in the upper left quadrant of the frustum, check the lower right corner of the quad? )
they particles are actually culled from the starfield when their center point goes out of the frustum, so they pop off while sometimes a large portion of them is still visible.
should either check all 4 points of the quad or intelligently check a point that is not its center point ( ie if its in the upper left quadrant of the frustum, check the lower right corner of the quad? )