Florian Forster to sdl in SDL 1.3 (revision 5508 from SVN), the method used to calculate the bits per pixel from a “int format” differ between “SDL_ListModes” (which always uses the “SDL_BITSPERPIXEL” macro) and “SDL_PixelFormatEnumTo- Masks” (which uses either “SDL_BITSPERPIXEL” or “SDL_BYTESPERPIXEL * 8”, depending on the value of “SDL_BYTESPERPIXEL”). Because the values are later compared in “SDL_ListModes” this may lead to some valid video modes not being returned. In my case the only mode returned by “SDL_GetNumDisplayModes” was dismissed and NULL was returned. (This led to the calling application sticking its head in the sand.) The attached patch copies the method used within “SDL_PixelFormatEnumTo- Masks” to “SDL_ListModes”. This solved the problem for me though I don't fully understand the method used by “SDL_PixelFormatEnumToMasks”.

Bugs are now managed in the SDL bug tracker, here:

    http://bugzilla.libsdl.org/

You may report bugs there, and search to see if a given issue has already
 been reported, discussed, and maybe even fixed.



You may also find help at the SDL mailing list. Subscription information:

    http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org

Bug reports are welcome here, but we really appreciate if you use Bugzilla, as
 bugs discussed on the mailing list may be forgotten or missed.