[Interest] QQmlApplicationEngine and antialiasing

Jérôme Godbout godboutj at amotus.ca
Wed Jan 16 15:25:00 CET 2019

Hi Giuseppe, thanks for the help, this is what I think too. It's hard to known why sometime it fails but the sample is kept and sometime it fails and the sample is back to 1. This will be hard to detect and make decent fall back or warning. I will try on the real machine as main Linux OS.

Thanks for the help,

-----Original Message-----
From: Giuseppe D'Angelo <giuseppe.dangelo at kdab.com> 
Sent: January 16, 2019 6:13 AM
To: Jérôme Godbout <godboutj at amotus.ca>; Qt Interest <interest at qt-project.org>
Subject: Re: [Interest] QQmlApplicationEngine and antialiasing


Il 15/01/19 20:26, Jérôme Godbout ha scritto:
> Ah good to known, I will keep a note about this env variables to print the info.
> Seem like if I used the 3D acceleration, the AA samples is not used and stick to 1, but if I do not enable the 3D acceleration into my VM, I get lie and it tell me I have the requested samples but it is not seen into the rendering. I did try with 4x and 8x samples. I'm a bit confuse about this.

My gut feeling is that you simply don't have working MSAA in a VM. I 
don't think the Shape module supports any other form of AA when rendered 
through OpenGL (but I might be wrong on this).

My 2 c,

Giuseppe D'Angelo | giuseppe.dangelo at kdab.com | Senior Software Engineer
KDAB (France) S.A.S., a KDAB Group company
Tel. France +33 (0)4 90 84 08 53, http://www.kdab.com
KDAB - The Qt, C++ and OpenGL Experts

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