[WebPositive] "pixelated" rendering of text and freezing while scrolling

[taos]

Using HaikuWebkit 1.4.4 with hrev47850 gcc2h, I've encountered a website (​​http://www.spiegel.de), that looks really strange. In the upper part text is rendered fine: In the lower part, text seems "pixelated": With HaikuWebkit 1.4.3 the pixelated texts were missing (there was just a white area). Additionally, if you scroll further down, WebPositive freezes quite often (debug report attached). Most of the time you can reproduce this - at least on my machine - by scrolling down to the pixelated area (sometimes it's already frozen at this point), switch to another tab and go back and try to scroll either using scroll bars or up/down arrow keys.

[taos]

rendering of upper part of www.spiegel.de

[taos]

rendering of lower part of www.spiegel.de

[taos]

report file for frozen WebPositive

[jprostko]

On hrev47853 GCC2 hybrid with HaikuWebkit 1.4.4, I am seeing blurry text as well in the newly-released concrete5 5.7.0. Essentially you will see blurry text on certain text unless it is hovered over or clicked.

I would file another ticket, but I'm pretty sure this is the same issue as seen on the Spiegel site. If need be, I can set up a test login, as I only see this behavior in the admin UI of concrete5. I will attach an image showing the behavior as well.

[jprostko]

Blurry text in admin UI of concrete5 5.7

[jprostko]

Solely as an FYI, this still occurs with concrete5 5.7.1 on a Haiku GCC2 Hybrid, hrev48031, which is using HaikuWebKit 1.4.5.

[pulkomandy]

The donation meter on haiku-os.org has the same problem. It is related to the use of alpha transparency with clipping, and there is a test case in app_server clipping tests that reproduces it, too.

[taos]

I still see the same problem with haikuwebkit 1.4.6 on hrev48099 gcc2hybrid.

[vidrep]

My ticket #11271 is a duplicate of this same issue and can be closed as such.

[taos]

With HaikuWebKit 1.4.9, it seems to be back to 1.4.3's behaviour: instead of pixelated text there's no visible text at all.

[taos]

Using HaikuWebKit 1.4.10 on hrev48824, I can't see the pixelated look on the homepage of www.spiegel.de anymore. The font of the donation meter on www.haiku-os.org (not the one on www.haiku-inc.org), however, seems to still be affected by this problem. So, I'm not sure if the new version of HaikuWebKit solved (at least a part of) this rendering bug or if www.spiegel.de changed their homepage somehow.

[taos]

I think the spiegel.de homepage was recently redesigned so that it no longer shows these problems. With HaikuWebKit 1.4.12, there's still invisible text in the lower part of the homepage if an older version of the homepage (e.g. from January 2015) is loaded via waybackmachine. The freezing, however, seems to be gone for good.

[vidrep]

I had a duplicate ticket #11271. Trying the same webpage today with hrev49717, I do not see the pixelated text. I assume it was resolved sometime in the past year.

[taos]

The text of the haiku donation meter is still pixelated.

[jua]

Should be fixed in hrev49807

[taos]

hrev49822 x86_64 is still on HaikuWebKit 1.4.13, so no change there. With hrev49822 gcc2 hybrid, the haiku donation meter has no pixelated text anymore. This seems to be solved.

The older spiegel.de homepages loaded via waybackmachine, however, still show the same issues. Recent versions of spiegel.de look okay (apart from an encoding(?) problem that results in a question mark in a box instead of an umlaut).

[taos]

BTW, with HaikuWebKit 1.5.1 on hrev49856, the archived spiegel.de pages are now rendered correctly, too.