Hi,

I found some interesting code online about recursive shaders. It was not to difficult to build a mobile app with it but my app is not getting approved. The issue is that it is not going to sleep when the phone is.
To send it to sleep I tried to build in an active property and binding the shader to it but that does not help.

Qt Code: 
  1. ShaderEffect {
  2.         id: inputItem
  3.         property variant source: ShaderEffectSource { sourceItem: sourceArea; smooth: false }
  4.         property variant recursiveSource: recursiveSource
  5.         property real ledWidthPercent: ledScreen.ledWidth/ledScreen.width
  6.         anchors.fill: sourceArea
  7.         visible: false
  8.         enabled: root.active
  9.  
  10.         fragmentShader: "
  11.             varying mediump vec2 qt_TexCoord0;
  12.             uniform highp float qt_Opacity;
  13.             uniform highp float ledWidthPercent;
  14.             uniform lowp sampler2D source;
  15.             uniform lowp sampler2D recursiveSource;
  16.             void main() {
  17.                 highp vec4 pix;
  18.                 if (qt_TexCoord0.x > (1.0 - ledWidthPercent)) {
  19.                     pix = texture2D(source, qt_TexCoord0);
  20.                 } else {
  21.                     highp vec2 pos = vec2(qt_TexCoord0.x+ledWidthPercent, qt_TexCoord0.y);
  22.                     pix = texture2D(recursiveSource, pos) * (1.0-ledWidthPercent*2.0);
  23.                 }
  24.                 gl_FragColor = pix * qt_Opacity;
  25.             }
  26.         "
  27.     }
  28.  
  29.     ShaderEffectSource {
  30.         id: recursiveSource
  31.         sourceItem: inputItem
  32.         hideSource: true
  33.         visible: false
  34.         live: root.updateFrequency == 1//false
  35.         recursive: true
  36.         smooth: false
  37.         enabled: root.active
  38.     }
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Can someone help me to understand how this code works and how I can pause it?

Thanks