Use Qt6 compatible blur effect.

example/qml/page/T_Acrylic.qml

@@ -20,11 +20,14 @@ FluScrollablePage{
             height: 1200/5
             radius:[15,15,15,15]
             Image {
+                id:image
                 asynchronous: true
                 source: "qrc:/example/res/image/banner_3.jpg"
                 anchors.fill: parent
                 sourceSize: Qt.size(width,height)
+            }
             FluAcrylic {
+                sourceItem:image
                 anchors.bottom: parent.bottom
                 anchors.right: parent.right
                 width: 100
@@ -36,7 +39,6 @@ FluScrollablePage{
                     font.bold: true
                 }
             }
-            }
             Layout.topMargin: 20
         }
 
@@ -45,15 +47,17 @@ FluScrollablePage{
         Layout.fillWidth: true
         Layout.topMargin: -1
         code:'Image{
+    id:image
     width: 800
     height: 600
     source: "qrc:/example/res/image/image_huoyin.webp"
     radius: 8
+    }
     FluAcrylic{
+        sourceItem:image
         width: 100
         height: 100
         anchors.centerIn: parent
-    }
 }'
     }
 

src/imports/FluentUI/Controls/FluAcrylic.qml

@@ -23,11 +23,9 @@ Item {
         sourceRect: Qt.rect(control.x, control.y, control.width, control.height)
     }
 
-    GaussianBlur {
+    FastBlur {
         radius: 20
         anchors.fill: effect_source
         source: effect_source
-        samples: 1 + radius * 2
     }
-
 }