627270 - Bizarre, super-bolded font rendering on PBS Frontline page with D2D/DirectWrite

Status: RESOLVED DUPLICATE of bug 551313

(Core :: Graphics, defect)

Description

[DB Cooper]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b10pre) Gecko/20110119 Firefox/4.0b10pre
Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b10pre) Gecko/20110119 Firefox/4.0b10pre

With Direct2D/DirectWrite/D3D10 acceleration activated some text on the link is extremely bold and oddly rendered.

Reproducible: Always

Steps to Reproduce:
1. Check that Direct2D/DirectWrite/D3D10 are active
2. Go to link
3. Observe text
Actual Results:  
http://i.imgur.com/7inYu.png

Expected Results:  
http://i.imgur.com/K2g3T.png


Adapter Description	ATI Radeon HD 4600 Series
Vendor ID	1002
Device ID	9498
Adapter RAM	512
Adapter Drivers	aticfx64 aticfx64 aticfx32 aticfx32 atiumd64 atidxx64
atiumdag atidxx32 atiumdva atiumd6a atitmm64
Driver Version	8.801.0.0
Driver Date	
Direct2D Enabled	true
DirectWrite Enabled	true (6.1.7600.20830)
WebGL Renderer	TransGaming Inc. -- ANGLE -- OpenGL ES 2.0 (git-devel Jan
19 2011 03:41:44)
GPU Accelerated Windows	1/1 Direct3D 10

Comment 1

[Boris Zbarsky [:bzbarsky]]

Unless the site is using different style sheets for different OSes, there's no weird weight > 700 stuff going on here...

Comment 2

[DB Cooper]

(In reply to comment #1)
> Unless the site is using different style sheets for different OSes, there's no
> weird weight > 700 stuff going on here...

BTW, this only happens with D2D/DW activated on windows 7. With just D3D9 layers the rendering is normal.

Comment 3

[pal-moz]

Attachment: screenshot

Mozilla/5.0 (Windows NT 6.1; rv:2.0b10pre) Gecko/20110119 Firefox/4.0b10pre ID:20110119030331

seems to be fine. Win 7 32bit.


Adapter Description : NVIDIA GeForce GTS 250
Vendor ID : 10de
Device ID : 0615
Adapter RAM : 1024
Adapter Drivers : nvd3dum nvwgf2um,nvwgf2um
Driver Version : 8.17.12.5896
Driver Date : 7-9-2010
Direct2D Enabled : true
DirectWrite Enabled : true (6.1.7600.16699)
WebGL Renderer : NVIDIA Corporation -- GeForce GTS 250/PCI/SSE2 -- 3.3.0GPU Accelerated Windows : 1/1 Direct3D 10

Comment 4

[DB Cooper]

Attachment: D2D/DW bad font rendering

Comment 5

[DB Cooper]

Attachment: D3D9 normal font rendering

Comment 7

[Alice0775 White]

Attachment: reduced html

When 'Gill Sans' font is used, this problem seems to happen.

Comment 8

[John Daggett (:jtd)]

As described in bug 551313, this is a byproduct of MS Office shipping a set of fonts that includes two UltraBold faces for Gill Sans MT.  DirectWrite does some family name swizzling in this case that produces a family 'Gill Sans' with *only* these UltraBold faces.  Same behavior in IE Platform Preview 7 when these fonts are installed (IE9 beta uses GDI font groupings and so will not have this problem).