OpenGL and QML overlapping

MasterQ32

Hello there!

I am currently developing some tool with Qt 5.3 and QtQuick 2, trying to implement an OpenGL control.
My template was the "Scene Graph - OpenGL Under QML":http://qt-project.org/doc/qt-5/qtquick-scenegraph-openglunderqml-example.html Example. It worked really well until i discovered a strange thing:

Normal QML components appear to overlap any of my OpenGL drawings which is kinda obstructive if i want to contain my OpenGL rendered thing in the scene graph before other objects.

Has anyone encountered similar behaviour and if yes, is there a fix for this?

p3c0

Hi,

Try to set a lower Z value to the QML components.

MasterQ32

Hey, i just tried to lower the Z values but no success.
Here is my QML test source and the resulting image:

@import QtQuick 2.0
import OpenGLUnderQML 1.0

Item {

width: 320
height: 480
Rectangle {
    z: -1
    color: Qt.rgba(1, 1, 1, 0.7)
    radius: 10
    border.width: 1
    border.color: "white"
    anchors.fill: label
    anchors.margins: -10
}

Squircle {
    z: 1
    SequentialAnimation on t {
        NumberAnimation { to: 1; duration: 2500; easing.type: Easing.InQuad }
        NumberAnimation { to: 0; duration: 2500; easing.type: Easing.OutQuad }
        loops: Animation.Infinite
        running: true
    }
}

Text {
    z: -1
    id: label
    color: "black"
    wrapMode: Text.WordWrap
    text: "The background here is a squircle rendered with raw OpenGL using the 'beforeRender()' signal in QQuickWindow. This text label and its border is rendered using QML"
    anchors.right: parent.right
    anchors.left: parent.left
    anchors.bottom: parent.bottom
    anchors.margins: 20
}

}@

!http://ps.masterq32.de/?941(Demo Image)!

p3c0

The first 2 paragraphs "here":http://qt-project.org/doc/qt-5/qtquick-scenegraph-openglunderqml-example.html might answer your questions.

MasterQ32

Sometimes a good RTFM is the right hint :P
Thanks, it should work now!