QtAV: Qt Quick items display wrong textures

[ibingow]

Now i'm developing rendering yuv frames with opengl for qml. Video frames can display correctly. But other items display wrong contents. Text item becomes white rectangles. Image item displays a part of video frame, the color is gray. If I render rgb frames instead yuv frames, all works fine.

Now i have no ideas. What could be the reason?

code is here: https://github.com/wang-bin/QtAV

you can try yourself. in "examples/QMLPlayer/qml/QMLPlayer/main.qml", add a line @opengl: true@ in "VideoOutput" item.

this is the result if rendering yuv with opengl is used

!http://wang-bin.github.io/qtav.org/images/qtav-qml-gl-wrong-items.jpg(wrong item contents)!

the buttons should be

!http://wang-bin.github.io/qtav.org/images/qtav-qml-no-gl.jpg(qtav no gl in qml)!