Qt3D.Renderer.RHI.Backend: Initializing RHI with OpenGL backend

[timob256]

I tried an example called "Qt 3D:WireFrame QML Example". I haven't changed anything in the code, but it works with an error. How to fix the error ??

error : Qt3D.Renderer.RHI.Backend: Initializing RHI with OpenGL backend

[timob256]

ubuntu 20.04 fosa
qt 6.1.2

[timob256]

read this https://doc.qt.io/Qt-6/qt3drender-porting-to-rhi.html

but QSG_RHI_BACKEND

```

techniques: [
Technique {
graphicsApiFilter {
api: GraphicsApiFilter.OpenGL.QSG_RHI_BACKEND
profile: GraphicsApiFilter.CoreProfile
majorVersion: 3
minorVersion: 1
}

also results in an error

qrc:/WireframeEffect.qml:67:17: Unable to assign [undefined] to Qt3DRender::QGraphicsApiFilter::Api

[timob256]

added a line

```

qputenv("QSG_RHI_BACKEND", "opengl");

alas, nothing worked. I also tried to open a similar project, also an error "pbr-material"

[timob256]

does not work in windows 10 :(