On Tue, Jun 21, 2016 at 4:41 AM, Jack Moffitt <j...@metajack.im> wrote:
> How is this done in Gecko? > Display list analysis in the main thread. We learn something is not visible during one of the various cullings > of WebRender. So I guess the idea would be to have some notification > you send when something goes from visible previously to invisible. I > suppose there is an analog when doing flow construction that you might > find a flow that was previously visible is now display: none. > The problem is that you want notifications ahead of time that an element is predicted to become visible, so you can decode images/video etc hopefully in time to render the element the moment it becomes visible. One issue that wasn't covered in that lightning talk is that what > happens when the video comes back into view? Decoding can only be > started at a keyframe, so how do they resume playback? > It's implemented as a seek operation, so you decode a keyframe and then as many frames as necessary to reach the nominal current position. Rob -- lbir ye,ea yer.tnietoehr rdn rdsme,anea lurpr edna e hnysnenh hhe uresyf toD selthor stor edna siewaoeodm or v sstvr esBa kbvted,t rdsme,aoreseoouoto o l euetiuruewFa kbn e hnystoivateweh uresyf tulsa rehr rdm or rnea lurpr .a war hsrer holsa rodvted,t nenh hneireseoouot.tniesiewaoeivatewt sstvr esn _______________________________________________ dev-servo mailing list dev-servo@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-servo
