OpenGL and QML overlapping
-
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?
-
Hi,
Try to set a lower Z value to the QML components.
-
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 1.0Item {
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)!
-
The first 2 paragraphs "here":http://qt-project.org/doc/qt-5/qtquick-scenegraph-openglunderqml-example.html might answer your questions.