diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/state_trackers/wgl/stw_pixelformat.c | 36 |
1 files changed, 29 insertions, 7 deletions
diff --git a/src/gallium/state_trackers/wgl/stw_pixelformat.c b/src/gallium/state_trackers/wgl/stw_pixelformat.c index 7763f71cbc6..833308d964c 100644 --- a/src/gallium/state_trackers/wgl/stw_pixelformat.c +++ b/src/gallium/state_trackers/wgl/stw_pixelformat.c @@ -432,17 +432,39 @@ stw_pixelformat_choose(HDC hdc, CONST PIXELFORMATDESCRIPTOR *ppfd) !!(pfi->pfd.dwFlags & PFD_DOUBLEBUFFER)) continue; - /* FIXME: Take in account individual channel bits */ - if (ppfd->cColorBits != pfi->pfd.cColorBits) - delta += 8; + /* Selection logic: + * - Enabling a feature (depth, stencil...) is given highest priority. + * - Giving as many bits as requested is given medium priority. + * - Giving no more bits than requested is given lowest priority. + */ - if (ppfd->cDepthBits != pfi->pfd.cDepthBits) - delta += 4; + /* FIXME: Take in account individual channel bits */ + 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->cStencilBits != pfi->pfd.cStencilBits) + 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->cAlphaBits != pfi->pfd.cAlphaBits) + 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) + delta += 10000; + else if (ppfd->cAlphaBits > pfi->pfd.cAlphaBits) + delta += 100; + else if (ppfd->cAlphaBits < pfi->pfd.cAlphaBits) delta++; if (delta < bestdelta) { |