-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 05/05/2011 01:25 PM, Jesse Barnes wrote: > On Thu, 05 May 2011 13:17:13 -0700 > Jeremy Huddleston <jerem...@apple.com> wrote: >> >> Yes, I realize that there are some areas that use 64bit for sbc. Do we >> really need 64bits for this? If so, how do we properly to communicate the >> 64bit value between server/client? Currently, your changes result in an >> implicit cast from 64bit to 32bits in DRI2SwapComplete which will cause >> problems if we really do need those extra bits: >> >> if (swap_complete) >> swap_complete(client, swap_data, type, ust, frame, >> pPriv->swap_count); >> >> It looks to me like much more of DRI2 should be rewritten to use 32bit swap >> counts, or there should be some other mechanism in place to communicate the >> full 64bit value. > > Yeah there are other mechanisms (the OML sync extension) for > communicating the whole 64 bits. Both the swap reply and msc reply > deal in the full 64 bits, just the swap event (an unrelated extension) > truncates to 32 bits. (Also I think the 64 bit size for swap count in > the OML extension is just inertia; getting to a count that high even at > 120Hz is going to take awhile.)
But it could happen on, say, a desktop compositor that's been logged in for a month. I think the main reason is that the other two values really need to be 64-bits, so you might as well make all three be 64-bits. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/ iEYEARECAAYFAk3DEsoACgkQX1gOwKyEAw/a3gCePneowulpZhTz88vmU4DRr22K D20An35ff4MD3uuDUfJXNxE5m+wtsm1m =bzXJ -----END PGP SIGNATURE----- _______________________________________________ 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
