Firefox4 Font issues with HW ACC Off

[apathy]

I'm having font rendering issues in firefox4 with HW Acc off. This only occurs when a 3rd party visual style is used. The font is normal using Aero or Basic or Classic.

First off, the context menus.

This is chrome's menu

This is firefox's:

I'm also seeing the issues on some websites now, not just menus.

Here are some random texts zoomed in.

Chrome:

Fx4:

And white text on a dark bg.

Chrome:

Fx4:

I found twitter is a good source to see the font rendering differences.

I'm wondering what causes this and why only when visual styles are applied? Is this a known bug that's been filed? Anyone else with this issue? Can it be fixed?

[Wakers]

People wouldn't believe me when I brought this issue up. Using the anti-alias tuner add on makes no difference, the font rendering in FF4 is just downright crap compared to the other browsers. The only difference is that I notice lower quality font rendering with the default visual style applied also.

I think its an ATi thing personally, as everyone who has had the same problem seems to be running ATi cards.

[apathy]

Definitely not an ATi issue because I am using a nvidia 8800 gt card. I just updated my drivers and the issue is still there. It's so hard to find information on this topic as well. It's as if not many people use 3rd party visual styles or just don't notice it.

[Wakers]

I think its the combination of running in high resolutions (then the issue is very obvious) and 3rd party visual styles.

[apathy]

I've found that pages with backgrounds causes the bad font rendering. I've tried the aurora and nightly builds and the issue is still there. I'm just worried the issue won't be addressed because Mozilla isn't aware of the issue because I can't find any information on this.

[Quazzi]

This post at mozillazine gives a clear explanation of font rendering.

[apathy]

I've read that but it has nothing to do with my issue. I'm using GDI not DW because HW acceleration is off. The text should look the same as Fx3.6 but it doesn't because FX4 has some weird issues with 3rd party visual styles causing text to be rendered like in my examples.

[Quazzi]

I misunderstood :pinch: sorry. I think Firefox detects what theme is being used on XP (luna, olive, zune, etc...). I wonder if they could implement a way to differentiate window color, transparency, menu colors and the like and compensate accordingly.