We have a desktop C++ application that uses the scenegraph, but we do not use Qt Quick, or any specific OpenGL functionality on Windows. We have a requirement to run on Windows XP SP3. (for probably one more year, I know...)
I am confused about the recommendations for Angle Vs OpenGL on Windows-XP. THE 'OFFICIAL' RECOMMENDATION The recommendations page in the wiki (http://qt-project.org/wiki/Qt-5-on-Windows-ANGLE-and-OpenGL) states that you should use "desktop opengl" if you need to run on XP. The exact text, which has been there for quite a long time (maybe two years?) is: >> "Your application needs to run on Windows XP. Although it is tempting to use >> ANGLE as a replacement >> for missing graphics drivers on this platform, it does not fully work and >> may lead to crashes, >> for example, when the security dialog is opened." (n.b. 'the security >> dialog' means 'ctrl-alt-delete') This cryptic statement lead me to https://bugreports.qt-project.org/browse/QTBUG-29223 QtQuick 2.0 view crash after Windows security dialog (Ctrl+Alt+Del) (we do not use QtQuick, and the related issues all seem to be fixed, leaving this the only ANGLE bug ARGUMENTS FOR USING ANGLE ON XP: I. The obvious advantage of indepence from end-users needing up-to-date drivers. II. if you look at the ANGLE project homepage (https://code.google.com/p/angleproject/), it states that >> "ANGLE is used as the default WebGL backend for both Google Chrome and >> Mozilla Firefox on Windows platforms. >> Chrome uses ANGLE for all graphics rendering on Windows, including the >> accelerated Canvas2D implementation and >> the Native Client sandbox environment." This statement leads me to believe that ANGLE is well supported on XP. III. This qt-develop list post suggests that Angle may provide better Performance? http://lists.qt-project.org/pipermail/development/2013-May/011045.html IV. Qt Multimedia (video playback) works better on angle (from the official recommendation page) V Angle is the default build on windows, SO MY QUESTION: Is it time to reconsider this recommendation? Should the recommendation be that ANGLE is useful on Windows XP? Steve Schilz Software Engineer Pasco Scientific _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest