Qt with c++ Video Playing Error

[Furkan]

I have D3D11: Removing Device Error. I encounter this error when I was trying to make my video enlarge. Code is crashed after this action.

I use qputenv function with QT_OPENGL, angle inputs.

I also tried setAttribute function with OPENGLES, Vulkan and Metal inputs( I tried all of them because I can't learn and know the differences between them.)

If you have any idea or information about that topic please give me some tips about it.

[SGaist]

Hi,

How do you enlarge your video ?
Which version of Qt are you using ?
On which version of Windows ?

[Furkan]

Hello,

For enlarge I use just QT MouseArea functions as;
onDoubleClicked: {
isMainWindowFullScreen ? root.showNormal() : root.showFullScreen()
isMainWindowFullScreen = !isMainWindowFullScreen
}

Then I use QT 6.4 and Windows10 enterprise.

[SGaist]

Do you have the same issue if you set the environment variable QSG_RHI_BACKEND to d3d11 ?

Might be related to QTBUG-102763.

[Furkan]

@SGaist yes I have the same issue while I have tried to set QSG_RHI_BACKEND to d3d11 situation.

I will search QTBUG-102763. Thank you.

[Furkan]

@SGaist "Could not create scene graph context for backend 'd3d11' - check that plugins are installed correctly in C:/Qt/6.4.0/mingw_64/plugins
QT_QUICK_CONTROLS_TEXT_SELECTION_BEHAVIOR "" " I also take this warning

[Furkan]

@SGaist I have also one warning at the begining of running. The warning is "Could not create scene graph context for backend"

[SGaist]

Can you check with a more recent version ? 6.4.2 is the current with 6.5 in preparation.

[Furkan]

@SGaist It could be possible I am trying it. Didn't crashed yet. Thank you.