render script blur

RenderScript.kt

//Render script blur
layout_content.isDrawingCacheEnabled = true
val bitmap = Bitmap.createBitmap(layout_content.drawingCache)
layout_content.isDrawingCacheEnabled = false

val rs = RenderScript.create(this@FGSimpleRound)
val input = Allocation.createFromBitmap(rs, bitmap, Allocation.MipmapControl.MIPMAP_NONE,
        Allocation.USAGE_SCRIPT)
val output = Allocation.createTyped(rs, input.getType())
val script = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs))
script.setRadius(25f)
script.setInput(input)
script.forEach(output)
output.copyTo(bitmap)

iv_dialog_bg.setImageBitmap(bitmap)