[Interest] Qt5 with qml 2.x on Windows XP... problems?

[Agocs Laszlo]

Another option is to use a software rasterizer (Mesa llvmpipe). It may not perform well, esp. on old machines, but could be an option in some cases.

There is also the Qt Quick 2D renderer, which takes GL out of the equation, but that's commercial only.

Best regards,
Laszlo

________________________________________
From: interest-bounces+laszlo.agocs=theqtcompany.com at qt-project.org <interest-bounces+laszlo.agocs=theqtcompany.com at qt-project.org> on behalf of Jason H <jhihn at gmx.com>
Sent: Wednesday, June 10, 2015 10:16 PM
To: Giuseppe D'Angelo
Cc: interest at qt-project.org
Subject: Re: [Interest] Qt5 with qml 2.x on Windows XP... problems?

Thanks for clarifying that. So it seems unless your embedded XP systems have after market 3D graphics cards, you can't succeed in the move to QtQ2.
If you can upgrade those systems (Are the AGP? or PCI? (You can get a video card that will likely work for about $25-$45 USD) )


> Sent: Wednesday, June 10, 2015 at 4:01 PM
> From: "Giuseppe D'Angelo" <giuseppe.dangelo at kdab.com>
> To: interest at qt-project.org
> Subject: Re: [Interest] Qt5 with qml 2.x on Windows XP... problems?
>
> Il 10/06/2015 21:46, Jason H ha scritto:
> > It is my understanding that QtQuick 2 assumes GL. I am not sure what version of GL it requires. I'd be willing to bet that the default driver in XP is insufficient. There may be a raster back end, but I could have sworn that GL was the core reason for the difference between QtQ1 and QtQ2?
>
> For the record, Qt Quick 2 on desktop requires OpenGL 3 (or 2.x + the
> FBO extension). As Microsoft only provides OpenGL 1.1 in the system
> opengl32.dll, you need the one supplied by your GPU vendor with the
> drivers. NVIDIA's drivers are just fine, for ATI's ones YMMV, Intel's
> ones just don't work on XP -- period.
>
> Note also that since you're on XP you can't use ANGLE as a Direct3D
> fallback.
>
> Hope this helps,
> --
> Giuseppe D'Angelo | giuseppe.dangelo at kdab.com | Software Engineer
> KDAB (UK) Ltd., a KDAB Group company | Tel: UK +44-1625-809908
> KDAB - The Qt Experts
>
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