   DirectX per pixol collision detection
  Hi everyone,I'm having real problems trying to do collision detection for my 2D space invaders game using DirectX and c++.I've tried looking through the forum and numerous google searches but can't find anything. Could someone please point me in the right direction? I've spent the past hour and half trying to find something on this.   
  What have you tried?Does it have to be pixel-accurate, or would simpler shapes work?   ;This recent thread may be of interest.   