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     RealFire with SDL - Roberto Prieto
  Copyright (C) 2001-2012 MegaStorm Systems
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 Simple and nice fire effect using SDL for video output. It is optimized in MMX and SSE2 plus standard ASM and C.
 The steps involved on the fire creation are:
  - initial fire effect is created on a 400x300 buffer (C, ASM, MMX and SSE2 code paths)
  - a 2x Zoom is performed over the fire effect doubling the fire resolution to 800x600 (C, MMX and SSE2 code paths)
  - this process is over a palettized surface of 8-bits and it is converted to final color depth by SDL 
  
  
 Original code from 1998 (running on MSDOS!). Ported to SDL in 2002. In 2004, I added MMX support and in 2012
 I wanted to check SSE2 code and this is the result :).

 Running on a Core i7-2600k @ Win7 64bits these are my result (for further information, please check the spreadsheet):
   + Fire effect (in SSE2): +- 6% de CPU
   + 2x Zoom (in SSE2): +- 5% de CPU
   + Conversion to video screen and render it: +-90%
 
 This software is distributed under LGPL license.