941b2de2ee
In ec27b99c2a16994127f77d76eb1fb466c390aee9 the filtering mode is changed from Linear to Nearest since users encountered obscure cases, in particular when multisampling with large sample counts got enabled, where the different filtering mode becomes noticeable. (Qt 5 and Qt 6 up until 6.4 uses Nearest, whereas the OpenGL -> QRhi migration introduced using Linear in 6.4) Meanwhile, the as of now undocumented high DPI downscaling feature got introduced, and that prefers linear filtering. (since that's definitely not a 1:1 mapping when it comes to texture size and the on-screen quad) To reconcile the differences, add support for both kind of samplers, and choose based on the sizes. This should have no effect when not running with the env.var. QT_WIDGETS_RHI=1 QT_WIDGETS_HIGHDPI_DOWNSCALE=1 set, but should restore the pre-6.5.2 look when they are set. Fixes: QTBUG-115461 Change-Id: I42eb8526cb7f74236b5550e26c4570771d2fbfb4 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io> (cherry picked from commit 9505305c403423f58e70471aaf55994bb734a0bd) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>