On Wed, Dec 4, 2013 at 12:16 PM, Benoit Girard <bgirard@mozilla.com> wrote: > On Tue, Dec 3, 2013 at 6:10 PM, Robert O'Callahan <robert@ocallahan.org>wrote: > >> OK, we can make will-animate:foo induce a stacking context only if foo >> does, but then I don't know how to fix the future-proofing problem. Maybe >> it isn't a big problem and we don't need to fix it. >> > > Is it possible and efficient to compute if a stacking context can be used > without any visible side effects? Ideally we don't want to restrict > optimizations that require a stack context all of the time internally at > least. > In Gecko, at least, we can layerize pretty well whether or not a property requires a stacking context. The problem is that some properties (opacity, filter, etc) don't make any sense unless they induce a stacking context. For those properties you want will-animate to induce a stacking context because you want the rendering change, if any, to happen early. Rob -- Jtehsauts tshaei dS,o n" Wohfy Mdaon yhoaus eanuttehrotraiitny eovni le atrhtohu gthot sf oirng iyvoeu rs ihnesa.r"t sS?o Whhei csha iids teoa stiheer :p atroa lsyazye,d 'mYaonu,r "sGients uapr,e tfaokreg iyvoeunr, 'm aotr atnod sgaoy ,h o'mGee.t" uTph eann dt hwea lmka'n? gBoutt uIp waanndt wyeonut thoo mken.o w
Received on Wednesday, 4 December 2013 00:29:59 UTC