Antialiasing problems

[FOXLISIN]

Hi guys, I faced with the antialiasing problems.
I have next part of code:

QSurfaceFormat format;
format.setSamples(8);
m_mainView->setFormat(format);

where m_mainView is QQuickView*.

But after that I have such artifacts (some "ghost" white lines at the bottom of the image):

These artifacts are found throughout the project near ".png" images with transparency. Any guesses?
Thank you in advance!

[FOXLISIN]

Nobody faced with this problem? No guesses?

[MikhailG]

@FOXLISIN well you could put your item into a rectangle set desirable height and width than set clip to true. It is hacky but could work.

[vladstelmahovsky]

@FOXLISIN since its pure HW specific may be its good idea to start from HW description?

[FOXLISIN]

@vladstelmahovsky
I also thought that this is HW specific problem. But the application has been tested on 8 different PCs and these artifacts were on each machine.

But here is my configuration:
Win7 64, Intel Core i5-2400 CPU 3.10GHz, 8GB RAM, GeForce GT 430