993473 - [meta] Enable low-res and progressive tiling on B2G

Status: RESOLVED FIXED

(Core :: Panning and Zooming, defect)

Description

[Kartikaya Gupta (email:[e-mail])]

This is a meta bug to track the work that needs to be done in order to enable low-res and progressive tiling on B2G.

Comment 1

[Kartikaya Gupta (email:[e-mail])]

I tried enabling progressive tile rendering as-is just by flipping the pref and it seems to work ok. On the hamachi it's not really evident that it's doing anything at first but if you drop the tile size to 32x32 (again with the prefs) then it's pretty obvious that it's rendering tiles progressively. So that's good news. I haven't verified that draw aborting is working as desired.

Comment 2

[Kartikaya Gupta (email:[e-mail])]

Low-res tiling also appears to be working, although is somewhat glitchy in that a lot of stuff flickers and (maybe) repaints while scrolling. I'm not sure if this is intentional or not, or if it's because of the way I hacked it in to see if it was working. I'll file another dependent bug with my hack and results.

Comment 3

[Kartikaya Gupta (email:[e-mail])]

With the patches on bug 1001438, bug 994293, and bug 897996, I get much jankier scrolling in the contacts app. I grabbed a profile; it is at http://people.mozilla.org/~bgirard/cleopatra/#report=5fd02aae5a513a54704c21e0eee4319c8972f6f4. I'll probably spin this out into another dependent bug once I have a better idea of what's going on, as this will need to be fixed before we can enable low-res/progressive painting.

Comment 4

[Kartikaya Gupta (email:[e-mail])]

I narrowed down the problem above a little bit, filed bug 1005908 for it.

Comment 5

[Kartikaya Gupta (email:[e-mail])]

Most recent try push with latest versions of all the dependent patches and with low-res + progressive enabled on B2G: https://tbpl.mozilla.org/?tree=Try&rev=94c29f81bc15

Just waiting on one review and then everything should be good to land.

Comment 6

[Ivan Tsay (:ITsay)]

1. Add user story ID defined in Firefox OS product backlog Google sheet
2. Specify this is Firefox OS 2.0 feature by feature-b2g=2.0

Comment 7

[Kartikaya Gupta (email:[e-mail])]

All done.

Comment 8

[Kartikaya Gupta (email:[e-mail])]

Stuff was backed out.

Comment 9

[Kartikaya Gupta (email:[e-mail])]

Hopefully it doesn't bounce again!