I've asked how to do this time and time again because I have tried time and time again to do it and time and time again I have failed. You know what the render mode "glow" does. You know how it resizes the sprite depnding on your distance from it and you know that if the center of the sprite is covered by a wall then the whole sprite will disappear.
I need to know how to give a sprite the effect of "glow" without the resizing aspect.