Re: [Interest] Is the OpenGL vs Angle distinction important for widget apps?
OK, that makes sense. Yeah, hidden uses of GL (by mistake or not) is what I'm worried about. I thought that I could make sure this won't happen by building a minimal Qt (no Qml, no WebEngine or WebKit, etc) and with -no-opengl, but that won't work as it results in build errors. On 22/03/15 18:30, Agocs Laszlo wrote: As long as the application is pure widgets, without ever using QOpenGL/QGL classes or QQuickWidget, it will not attempt to initialize any OpenGL stuff. (if that's not the case, it's a bug, we had some of these recently, like QTBUG-43832) This means that not having OpenGL or ANGLE working (or available) is not a problem for such apps. Starting with 5.5 the only type of pre-built packages for Windows are the dynamic GL ones, so the confusion of needing to ship ANGLE libs even for widget-only apps will go away. Cheers, Laszlo From: interest-bounces+laszlo.agocs=theqtcompany@qt-project.org interest-bounces+laszlo.agocs=theqtcompany@qt-project.org on behalf of Giuseppe D'Angelo dange...@gmail.com Sent: Sunday, March 22, 2015 4:48 PM To: Nikos Chantziaras Cc: interest@qt-project.org Subject: Re: [Interest] Is the OpenGL vs Angle distinction important for widget apps? On 22 March 2015 at 10:28, Nikos Chantziaras rea...@gmail.com wrote: For applications that don't use Qml and only use QWidget, does it matter whether Qt was built with OpenGL or Angle on Windows? It still matters because 1) ANGLE means extra dependencies to be shipped along your app 2) ANGLE does not work on Windows XP So for pure-widgets applications it might make more sense to use the Desktop OpenGL build of Qt. YMMV :) ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Is the OpenGL vs Angle distinction important for widget apps?
That (-no-opengl builds failing) is a different problem, and a very valid one. For 5.5 on Windows we still have some patches pending to fix -no-opengl builds. Hopefully it all gets corrected by the beta. Best regards, Laszlo From: interest-bounces+laszlo.agocs=theqtcompany@qt-project.org interest-bounces+laszlo.agocs=theqtcompany@qt-project.org on behalf of Nikos Chantziaras rea...@gmail.com Sent: Monday, March 23, 2015 2:21 PM To: interest@qt-project.org Subject: Re: [Interest] Is the OpenGL vs Angle distinction important for widget apps? OK, that makes sense. Yeah, hidden uses of GL (by mistake or not) is what I'm worried about. I thought that I could make sure this won't happen by building a minimal Qt (no Qml, no WebEngine or WebKit, etc) and with -no-opengl, but that won't work as it results in build errors. On 22/03/15 18:30, Agocs Laszlo wrote: As long as the application is pure widgets, without ever using QOpenGL/QGL classes or QQuickWidget, it will not attempt to initialize any OpenGL stuff. (if that's not the case, it's a bug, we had some of these recently, like QTBUG-43832) This means that not having OpenGL or ANGLE working (or available) is not a problem for such apps. Starting with 5.5 the only type of pre-built packages for Windows are the dynamic GL ones, so the confusion of needing to ship ANGLE libs even for widget-only apps will go away. Cheers, Laszlo From: interest-bounces+laszlo.agocs=theqtcompany@qt-project.org interest-bounces+laszlo.agocs=theqtcompany@qt-project.org on behalf of Giuseppe D'Angelo dange...@gmail.com Sent: Sunday, March 22, 2015 4:48 PM To: Nikos Chantziaras Cc: interest@qt-project.org Subject: Re: [Interest] Is the OpenGL vs Angle distinction important for widget apps? On 22 March 2015 at 10:28, Nikos Chantziaras rea...@gmail.com wrote: For applications that don't use Qml and only use QWidget, does it matter whether Qt was built with OpenGL or Angle on Windows? It still matters because 1) ANGLE means extra dependencies to be shipped along your app 2) ANGLE does not work on Windows XP So for pure-widgets applications it might make more sense to use the Desktop OpenGL build of Qt. YMMV :) ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
[Interest] Is the OpenGL vs Angle distinction important for widget apps?
For applications that don't use Qml and only use QWidget, does it matter whether Qt was built with OpenGL or Angle on Windows? As far as I can tell, GL/Angle is only used by Qml. Is that true? Can there be any circumstances where a non-Qml application might error out if running with an OpenGL-based Qt on a system with an old OpenGL version? (Meaning the default one from Microsoft which only supports software OpenGL 1.1.) ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Is the OpenGL vs Angle distinction important for widget apps?
As long as the application is pure widgets, without ever using QOpenGL/QGL classes or QQuickWidget, it will not attempt to initialize any OpenGL stuff. (if that's not the case, it's a bug, we had some of these recently, like QTBUG-43832) This means that not having OpenGL or ANGLE working (or available) is not a problem for such apps. Starting with 5.5 the only type of pre-built packages for Windows are the dynamic GL ones, so the confusion of needing to ship ANGLE libs even for widget-only apps will go away. Cheers, Laszlo From: interest-bounces+laszlo.agocs=theqtcompany@qt-project.org interest-bounces+laszlo.agocs=theqtcompany@qt-project.org on behalf of Giuseppe D'Angelo dange...@gmail.com Sent: Sunday, March 22, 2015 4:48 PM To: Nikos Chantziaras Cc: interest@qt-project.org Subject: Re: [Interest] Is the OpenGL vs Angle distinction important for widget apps? On 22 March 2015 at 10:28, Nikos Chantziaras rea...@gmail.com wrote: For applications that don't use Qml and only use QWidget, does it matter whether Qt was built with OpenGL or Angle on Windows? It still matters because 1) ANGLE means extra dependencies to be shipped along your app 2) ANGLE does not work on Windows XP So for pure-widgets applications it might make more sense to use the Desktop OpenGL build of Qt. YMMV :) -- Giuseppe D'Angelo ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Is the OpenGL vs Angle distinction important for widget apps?
You are forgetting about QtWebEngine. It needs opengl of some sort regardless of whether you use Qml or QWidgets. On Sun, Mar 22, 2015, 09:30 Agocs Laszlo laszlo.ag...@theqtcompany.com wrote: As long as the application is pure widgets, without ever using QOpenGL/QGL classes or QQuickWidget, it will not attempt to initialize any OpenGL stuff. (if that's not the case, it's a bug, we had some of these recently, like QTBUG-43832) This means that not having OpenGL or ANGLE working (or available) is not a problem for such apps. Starting with 5.5 the only type of pre-built packages for Windows are the dynamic GL ones, so the confusion of needing to ship ANGLE libs even for widget-only apps will go away. Cheers, Laszlo From: interest-bounces+laszlo.agocs=theqtcompany@qt-project.org interest-bounces+laszlo.agocs=theqtcompany@qt-project.org on behalf of Giuseppe D'Angelo dange...@gmail.com Sent: Sunday, March 22, 2015 4:48 PM To: Nikos Chantziaras Cc: interest@qt-project.org Subject: Re: [Interest] Is the OpenGL vs Angle distinction important for widget apps? On 22 March 2015 at 10:28, Nikos Chantziaras rea...@gmail.com wrote: For applications that don't use Qml and only use QWidget, does it matter whether Qt was built with OpenGL or Angle on Windows? It still matters because 1) ANGLE means extra dependencies to be shipped along your app 2) ANGLE does not work on Windows XP So for pure-widgets applications it might make more sense to use the Desktop OpenGL build of Qt. YMMV :) -- Giuseppe D'Angelo ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
Re: [Interest] Is the OpenGL vs Angle distinction important for widget apps?
On 22 March 2015 at 10:28, Nikos Chantziaras rea...@gmail.com wrote: For applications that don't use Qml and only use QWidget, does it matter whether Qt was built with OpenGL or Angle on Windows? It still matters because 1) ANGLE means extra dependencies to be shipped along your app 2) ANGLE does not work on Windows XP So for pure-widgets applications it might make more sense to use the Desktop OpenGL build of Qt. YMMV :) -- Giuseppe D'Angelo ___ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
