962093 - Text appearance changes unexpectedly

Status: UNCONFIRMED

(Core :: Graphics: Text, defect)

Description

[Bram Speeckaert]

Some of my findings were previously reported in bug 758862, but have largely gone ignored (said bug is marked as resolved). Because of this and because I'm not sure this issue is even related to that, I decided to file a new bug.

I've been noticing similar bad text rendering on various pages for a while now. It happens on Windows XP and 7, both with and without HWA. It seems to be related to window size and what other page elements are visible, so reproducing can be tricky. Here are some examples:

1) http://zeldaspeedruns.com/leaderboards/mm/any

Starts out bad on page load, resizing window vertically will eventually fix the text permanently until page refresh.

2) http://fail0verflow.com/blog/2013/espresso.html

Text only seems to be bad if any part of the background is visible. Resizing and scrolling the background away will fix the text. Text breaks again as soon as the background reappears.

Comment 1

[Bram Speeckaert]

Attachment: Case #1 - BAD

Comment 2

[Bram Speeckaert]

Attachment: Case #1 - GOOD

Comment 3

[Alice0775 White]

Please load about:support and post the Graphics section from that page

Comment 4

[Bram Speeckaert]

Graphics
Adapter Description	Mobile Intel(R) 945 Express Chipset Family
Adapter Drivers	igxprd32
Adapter RAM	Unknown
Device ID	0x27ae
Direct2D Enabled	Blocked for your graphics driver version. Try updating your graphics driver to version 6.1400.1000.5218 or newer.
DirectWrite Enabled	false (0.0.0.0)
Driver Date	2-15-2008
Driver Version	6.14.10.4926
GPU #2 Active	false
GPU Accelerated Windows	0/1 Basic Blocked for your graphics driver version. Try updating your graphics driver to version 6.1400.1000.5218 or newer.
Vendor ID	0x8086
WebGL Renderer	Blocked for your graphics driver version. Try updating your graphics driver to version 6.1400.1000.5218 or newer.
windowLayerManagerRemote	false
AzureCanvasBackend	skia
AzureContentBackend	cairo
AzureFallbackCanvasBackend	cairo
AzureSkiaAccelerated	0

Comment 5

[Bram Speeckaert]

Attachment: CASE #3 - GOOD

3) http://www.youtube.com/watch?v=HR41nFMREBE

YouTube HTML5 player showcases this issue as well. Enable 'Stats for nerds' and then toggling the tiny quality selection menu trigger it on my end.

Comment 6

[Bram Speeckaert]

Attachment: Case #3 - BAD