Bug 1694783 - Reduce alignment requirements for external buffers in SWGL. r=aosmond
Bug 1694783 - Reduce alignment requirements for external buffers in SWGL. r=aosmond

We should be reasonably hardened these days against using linear filters and over-reading
things when we shouldn't. There isn't as much need for strict alignment requirements on
external buffers anymore.

Differential Revision: https://phabricator.services.mozilla.com/D106989

[ghsync] From https://hg.mozilla.org/mozilla-central/rev/74d1f3c7ad1567dfaa5c15e62ad65007fabf7f03

servo/webrender,servo/webrender,servo/webrender,servo/webrender,servo/webrender,servo/webrender