Fast writing to a screen buffer

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Beaker
 #1
You are reading outside the screen i think. You should change that to:
lockbuffer backbuffer()
For x = 0 to GraphicsWidth()-1
  For Y = 0 to GraphicsHeight()-1
    thisPixel = ReadPixelFast(x,y,backbuffer()) And $FFFFFF
  next
next
unlockbuffer backbuffer()


Having said that, this isn't the fastest way. skidracer explains a faster solution above.