title: SDL2 Blit Scaled from a palettized (8bpp) Surface gives error: Blit combination not supported
body: <p>I'm using 8bpp surfaces for a NES emulator so it's convenient to do simple palette swaps instead of having to fiddle with the pixel data.<br>
  But Blitting Scaled from an 8bpp Surface gives the error <code>Blit combination not supported</code> regardless if the destination is 8bpp or 32bpp.<br>
  Any suggestion to make it work?</p>