Flower screen

[isaish-zheng]

When I use the vnc-eglfs-vajpeg project, I commented out CONFIG=videoacceleration, because I don't have libva-drm and libva, the mouse control is normal, but there is a blurred screen phenomenon, do you know the reason, whether it is related to libva.

[isaish-zheng]

I recompiled vnc-eglfs-main, also with the same blurred screen. It is normal to use a QT VNC.

[uwerat]

Back in the days I was running out of time when trying to get the vajpeg branch done - otherwise it would have gone to main already. So this branch is in a working state - only for someone who wants to work on this feature.

However the main branch is reported to work without problems. Are you sure, that you did not run into the vajpeg branch accidentily ?

[isaish-zheng]

When I use the QT plug-in VNC, the session information is shown in the following figure.

When I use vnceglfs, the session information is shown in the following figure.

QT VNC works fine, but vnceglfs blurs.The difference between the two is 'Pixel format' and 'VNC Server default'.I guess it may be this reason that causes the blurred screen, what do you think?

[isaish-zheng]

I got it. This is no longer a Qt quick app because I set the environment variables, qputenv("QMLSCENE_DEVICE", QByteArray("softwarecontext")). I can't get the actual display data from GL.

[uwerat]

Ah yes, grabbing the current frame buffer goes of course nowehere without a graphic stack that creates frames.

There are probably ways to grab the content of the software backend as well, but as the QT VNC platform offers this I do not see much value in it. However I could add a check in the code if the application is running on OpenGL and spit out a warning otherwise.