int stw_pixelformat_choose( HDC hdc,
                            CONST PIXELFORMATDESCRIPTOR *ppfd )
{
   uint count;
   uint index;
   uint bestindex;
   uint bestdelta;

   (void) hdc;

   count = stw_pixelformat_get_extended_count();
   bestindex = 0;
   bestdelta = ~0U;

   for (index = 1; index <= count; index++) {
      uint delta = 0;
      const struct stw_pixelformat_info *pfi = stw_pixelformat_get_info( index );

      if (!(ppfd->dwFlags & PFD_DOUBLEBUFFER_DONTCARE) &&
          !!(ppfd->dwFlags & PFD_DOUBLEBUFFER) !=
          !!(pfi->pfd.dwFlags & PFD_DOUBLEBUFFER))
         continue;

      /* FIXME: Take in account individual channel bits */
      if (ppfd->cColorBits != pfi->pfd.cColorBits) {
	      if (ppfd->cColorBits && !pfi->pfd.cColorBits)
		      delta += 10000;
	      else if (ppfd->cColorBits > pfi->pfd.cColorBits)
		      delta += 100;
	      else if (ppfd->cColorBits < pfi->pfd.cColorBits)
		      delta++;
      }

      if (ppfd->cDepthBits != pfi->pfd.cDepthBits) {
	      if (ppfd->cDepthBits && !pfi->pfd.cDepthBits)
		      delta += 10000;
	      else if (ppfd->cDepthBits > pfi->pfd.cDepthBits)
		      delta += 200;
	      else if (ppfd->cDepthBits < pfi->pfd.cDepthBits)
		      delta += 2;
      }

      if (ppfd->cStencilBits != pfi->pfd.cStencilBits) {
	      if (ppfd->cStencilBits && !pfi->pfd.cStencilBits)
		      delta += 10000;
	      else if (ppfd->cStencilBits > pfi->pfd.cStencilBits)
		      delta += 400;
	      else if (ppfd->cStencilBits < pfi->pfd.cStencilBits)
		      delta++;
      }

      if (ppfd->cAlphaBits != pfi->pfd.cAlphaBits) {
	      if (ppfd->cAlphaBits && !pfi->pfd.cAlphaBits)
		      delta += 10000;
	      else if (ppfd->cAlphaBits > pfi->pfd.cAlphaBits)
		      delta += 100;
	      else if (ppfd->cAlphaBits < pfi->pfd.cAlphaBits)
		      delta++;
      }

      if (delta < bestdelta) {
         bestindex = index;
	 bestdelta = delta;
	 if (bestdelta == 0)
            break;
      }
   }

   return bestindex;
}