   Sprite Rendering Producing Unwanted Squaring
  I've been working on this for a couple days now but if you look real close at the image below there seems to be like this squaring off ever 16 pixels or something like that. Does anyone know what causes this or any ideas on how it can be corrected?Also I'm getting a little over 4 FPS or 0.1 S/Frame when rendering 65536 particles with ID3DXSprite, would using Point Sprites greatly increase the speed? or is it not worth the trouble? Thanks   