1266796 - [PDF Viewer] Some diacritics are not displayed with HWA disabled

Status: RESOLVED WORKSFORME

(Firefox :: PDF Viewer, defect, P3)

Description

[Krasnaya Ploshchad’]

Attachment: Screenshots.7z

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:46.0) Gecko/20100101 Firefox/46.0
Build ID: 20160418114253



Actual results:

The Unicode Technical Note no. 41 “Church Slavonic Typography in Unicode” (http://www.unicode.org/notes/tn41/tn41-1.pdf) has some samples to illustrate how to use Combining Diacritical and Enclosing Marks to present Church Slavonic texts, but in Firefox 46.0 candidates, Build 3, some of them are failed to display, but they can see in Sumatra PDF.

Comment 1

[Krasnaya Ploshchad’]

I got build 5 just now, still unhappy with it.

Comment 2

[Krasnaya Ploshchad’]

(In reply to Krasnaya Ploshchad from comment #1)
> I got build 5 just now, still unhappy with it.

The build ID is: 20160421124000

Comment 3

[Loic]

Attachment: tn41-1.31-33.pdf

Comment 4

[Loic]

It's reproducible with HWA disabled.  Do you have HWA disabled in your profile?

Could you type about:support in the location bar and paste the section "graphics".

Comment 5

[Krasnaya Ploshchad’]

(In reply to Loic from comment #4)
> It's reproducible with HWA disabled.  Do you have HWA disabled in your
> profile?
> 
> Could you type about:support in the location bar and paste the section
> "graphics".

No, I have not disabled it. I have not disabled any graphics related option.

厂商 ID	0x8086
驱动程序版本	10.18.10.4358
驱动程序日期	12-21-2015
设备 ID	0x0166
适配器描述	Intel(R) HD Graphics 4000
适配器内存	Unknown
适配器驱动程序	igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32
异步平移/缩放	无
支持 H264 硬件解码	No; Hardware video decoding disabled or blacklisted
子系统 ID	397717aa
ClearType 参数	Gamma: 2200 Pixel Structure: R ClearType Level: 100 Enhanced Contrast: 50
DirectWrite 已启用	false (10.0.10586.0)
GPU #2 活跃	false
GPU 加速窗口	0/1 Basic (OMTC)
WebGL 渲染器	Google Inc. -- ANGLE (Intel(R) HD Graphics 4000 Direct3D11 vs_5_0 ps_5_0)
windowLayerManagerRemote	true
AzureCanvasBackend	skia
AzureContentBackend	cairo
AzureFallbackCanvasBackend	cairo
AzureSkiaAccelerated	0
(#0) Error	D3D11 layers disabled due to a prior crash.

Comment 6

[Loic]

HWA is disabled on your profile, DirectWrite is false and AzureCanvasBackend is skia instead of direct2d.

Comment 7

[Loic]

And it's not an issue specially related to FF46, I can reproduce it with FF21 and HWA off.

Comment 8

[YF (Yang)]

I can reproduce it with Fx16.0.2 and HWA off.

Comment 9

[Krasnaya Ploshchad’]

This problem appraring to me only after I got FF 46.0 candidate. It seems to me that my adapter was blocked.(In reply to Loic from comment #6)
> HWA is disabled on your profile, DirectWrite is false and AzureCanvasBackend
> is skia instead of direct2d.

I don’t know that, I remember this problem appearing to me only after I got FF 46.0 candidate.

Comment 10

[Krasnaya Ploshchad’]

(In reply to Krasnaya Ploshchad from comment #9)
> This problem appraring to me only after I got FF 46.0 candidate. It seems to
> me that my adapter was blocked.(In reply to Loic from comment #6)
> > HWA is disabled on your profile, DirectWrite is false and AzureCanvasBackend
> > is skia instead of direct2d.
> 
> I don’t know that, I remember this problem appearing to me only after I got
> FF 46.0 candidate.

OK, I opened DW, but the result looks the same to me, it seems to me that my adapter was in blacklist.

Comment 11

[Loic]

Probably because Mozilla has blocked the driver version since a few versions (due to reasons I ignore, surely crash or bad perf), so HWA is off.

Comment 12

[Kenan]

Does this bug still exist?

I cannot reproduce with Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:97.0) Gecko/20100101 Firefox/97.0 Build:20211213093143

and not with FF 48.0a1 from mozregression.

Comment 13

[Marco Castelluccio [:marco]]

Feel free to reopen if you can still reproduce.