How pass an array from qml to opengl Shader

[simkat82]

Hello Everyone,

I'm trying to paint a polygon on a map, using QML + Opengl.
I can paint everything I want but, using QML, I don't find any solutions to pass an array of colors as a propriety of my Shaders: the array is correctly initialized in my app, but there is no way to pass it to opengl program.

In "square.vert" I tried to define something like:
attribute float sArray[ELEMENT]; // sArray is the proprity correctly defined in qml container

Can anyone help me? Is there another way to pass a int[] o float[] to openGl scripts?

Thanks in advance,

Simone

ShaderEffect {
    width: parent.width
    height: width
    blending: true
    property vector2d u_viewport_resolution : Qt.vector2d(width*1.0, height*1.0)
    **property variant qmlArray: externArray**
    property bool quant: true
    property int cellColor: externcellColor
    vertexShader:"qrc:/square.vert"
    fragmentShader: "qrc:/clutter.frag"
}

function vector_initialize()
{
    console.log("vector_initialize");
    var colorIndex = 0;
    for (var i = 0; i < 11520; ++i ) {

        externArray[i]= 3.;//colorIndex;
        colorIndex = colorIndex +1;

        if (colorIndex == 5 )
            colorIndex = 0;

    }
}