The scrolling regression described in bug 770061 can still be reproduced with D2D HWA on with the win32 moz-central PGO build built from the following change set: https://hg.mozilla.org/mozilla-central/rev/a680fd777c3b This bug can be reproduced with a fresh profile by simply holding down the down arrow key at the following page: http://www.daimenhutchison.com/rugby/index.php/index There's a big lag/stutter before normal scrolling speeds return. A profile recorded during this is available here: http://people.mozilla.com/~bgirard/cleopatra/?report=d447825ef05bdba0abed3e605da1f275d9ca4c27 I cannot reproduce this with D2D off. See also Alice's test case from bug 770061 https://bugzilla.mozilla.org/attachment.cgi?id=666290

See also https://bugzilla.mozilla.org/attachment.cgi?id=666290, which reproduces more easily on too-fast HW.

Some Disqus comment sections on pages are a bit slow/lagged too. e.g. http://www.wired.com/reviews/2012/09/amazon-kindle-paperwhite/all/

This is fixed by minimizing intermediate surfaces.

Testing in the 10/3 nightly on win7/d3d10 after bug 778367, I no longer see any text rendered in https://bugzilla.mozilla.org/attachment.cgi?id=666290 Will open a new bug for that. I couldn't reproduce on any of the other test cases here, so if those have been fixed in the 10/3 nightly, please close this bug.

Bas tells me this is bug 797314. Will recheck after we respin with that.

Testacase URL in comment 0 and comment 2 are WFM. Mozilla/5.0 (Windows NT 6.1; rv:23.0) Gecko/20100101 Firefox/23.0 Graphics Adapter DescriptionIntel(R) HD Graphics 4000 Adapter Driversigdumd32 igd10umd32 igd10umd32Adapter RAM Unknown ClearType ParametersGamma: 2200 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 100 Device ID0x0166 Direct2D Enabled true DirectWrite Enabled true (6.1.7601.17789) Driver Date 2-22-2013 Driver Version 9.17.10.3040 GPU #2 Active false GPU Accelerated Windows1/1 Direct3D 10 Vendor ID0x8086WebGL RendererGoogle Inc. -- ANGLE (Intel(R) HD Graphics 4000) AzureCanvasBackenddirect2dAzureContentBackenddirect2dAzureFallbackCanvasBackendcairo