Am 27.04.2016 um 16:28 schrieb James Willcox:
I just pushed a change that will cause us to checkerboard differently,
and Anthony and I want to collect feedback from folks here to determine
if we should end up shipping it or not. Instead of showing the low-res
version of the page when we checkerboard (like when you pan quickly), we
will now just show the page background (hopefully). When the content is
finished rendering, it will then fade into place. The idea here is that
instead of appearing instantly, the fade-in will help smooth out the
otherwise jarring transition. The low-res tiles have always been a
constant source of bugs, and the GFX people don't like maintaining it,
so they are in favor of this. Panning performance with the fading tiles
also seems a bit better to me, but I want to hear what you guys think.
The change should be in tomorrow's Nightly.
Thanks,
James
My two cents:
The fading doesn't look bad, but for me it always seems to fade in from
black, which makes it a bit more jarring. I.e. when scrolling quickly, I
first see the page background colour in the checkerboarded area and then
the rendered tiles fade in from black. I would have expected the tiles
to fade in via the page background colour, too.
Also, speaking from the perspective of someone with a slightly
under-powered phone (S3 Mini): When looking at a page that is complex
enough to get me into heavy checkerboarding (i.e. content doesn't appear
for at least several seconds):
- Tiles often stop fading in and just pop up directly as they used to
previously
- Often, the low-res tiles would give enough clues for me to decide
whether I should scroll on or wait for the full-res tiles to render.
Now, I just have to stare at a blank page.
What is of course a bit difficult to judge subjectively, though, is how
much the removal of the low-res tiles speeds up the rendering of the
full-res page content.
Cheers,
Jan
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