Attachment 132472 Details for Bug 101703 – Alternative implementation of stw_pixelformat_choose

Alternative implementation of stw_pixelformat_choose

ChoosePixelFormat.c (text/plain), 2.02 KB, created by Olivier Lauffenburger on 2017-07-06 07:32:50 UTC

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Creator: Olivier Lauffenburger

Created: 2017-07-06 07:32:50 UTC

Size: 2.02 KB

patch

obsolete

>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;
>}

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Attachments on bug 101703: 132472 | 132475

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