797156 - canvas doesn't update automatically with hardware acceleration enabled

Status: UNCONFIRMED

(Core :: Graphics: Canvas2D, defect)

Description

[megaviruzz]

Attachment: copied from about:support

Related Bugs: Bug 794337

Steps to reproduce:
1. take a clean firefox (nightly)
2. enable hardware acceleration in options/prefs>advanced>browsing
3. restart
4. open the url
5. watch the canvas updating/not updating automatically

Expected results:
a nice and fluid "clock" in the canvas

Actual results:
the clock only updates if some other gui-components redraw.
changing gfx.canvas.azure.* or gfx.direct2d.disabled doesn't change anything

Additional information:
the code works as expected when hardware acceleration is turned off.
also see canvasupdate_aboutsupport.txt

Comment 1

[Loic]

I see a fluid clock in the canvas with FF18 on Win 7. There is only a very short pause when I open some UI elements like the Options dialog box or the findbar.

Comment 2

[megaviruzz]

I've also asked in irc at mozilla.org#ff
They said it's probably some incompatibilities with firefox and my graphics card (with previous version of Nightly I always had hardware acceleration turned on without any problems)
I didn't have any driver-updates lately