The generic rootless layer can be built to preserve an alpha channel for depth 24 images stored at 32 bits per pixel. It does this if rootlessConfig.h defines ROOTLESS_PROTECT_ALPHA; it doesn't matter what it's defined to.
When the server is built on Windows, ROOTLESS_PROTECT_ALPHA is defined to NO, so rootless will protect the alpha channel. Counter-intuitive to say the least. Does Xwin need to preserve the alpha channel of its top-level windows, or should the relevant line of rootlessConfig.h be changed to "#undef ROOTLESS_PROTECT_ALPHA"? I think rootless does more work than necessary if ROOTLESS_PROTECT_ALPHA is turned off, presumably because that case isn't actually being tested. It can probably be simplified if this matters. Jamey _______________________________________________ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: http://lists.x.org/mailman/listinfo/xorg-devel
