fastblur

As I pointed out in the comments I do not get the warning message, also that the code is valid so I can presume that it is an old bug.

But also as the OP points out there is another problem: every time a search is made, new elements are added to the model and that is caused because every time it is filtered, the "project_proxy_list_model" qproperty must be obtained, therefore this function is invoked , and in the logic of the OP is that 4 new items are loaded, which is wrong, the logic is to return the model and not use another method.

I'm updating this answer as the question has been partially cleared in the comments, but I will leave the original answer at the end, as it might still be useful.

Besides that, the concept at the base remains the same: a graphics effect is applied to an object, and it modifies that object look, not how underlying objects appear. If you want to apply that effect to multiple objects, they have to be children of a common parent, and the effect has to be set for that parent, but everything that is below that parent (and it's not its child) will only be partially affected by the result of the effect.
Imagine a blur effect as a filter applied to a real life photograph that is partially transparent: while the image in the photograph is blurred, what you can see behind it will not be blurred.

QGraphicsEffects don't provide the ability to limit the extent of their processing, as they usually modify the whole "bounding rect" of the object they are set for.
In order to achieve that, subclassing is necessary and the draw() method has to be overridden, as it is the one responsible for the actual drawing.

I'm going to presume that the whole interface is going to be affected by the effect in some way: even if some objects are "outside" the rectangle of the effect, they are still part of the same parent, so this is what we're going to do:

• create a main widget that acts as container for the full interface
• add a main layout for the main interface (the one normally shown)
• create a sub widget that contains the main interface, set a layout for it and add anything you need to that layout
• set the subclassed graphics effect to the sub widget
• create a widget for the menu, that has the main widget as parent, so it will not be part of the main layout; it will have its own layout with its buttons, labels, etc.
• add a system that changes the graphics effect according to the geometry of the menu, and whenever that changes, the effect will be applied to that geometry only

Ok so I found a solution that turned out to be easier than I thought it would be. Officially Microsoft does not provide an API to achieve what I was looking for. I stumbled across this thread and I found this. From there I adapted the code to my needs, I created a header file containing:

The answer is to unroll the for loops: There are 2 loops (one of size 3, and one of size 7) Just unroll them manually, replacing [l] with [0] etc.

The shader now gets properly compiled and you get the desired results again on your iOS device!

Here is the modified shader code such that it works:

There is a grabToImage() method that's available for every QML visual item, and it works for QtGraphicalEffects as well.

It is not very efficient tho, but in most cases it will suffice. Note that it will save individual images tho, it is not usable for video, and while Qt itself can internally encode video, it doesn't really offer anything in terms of video encoding of individual frames as a public API, so if you want to save the effect output as a video, you will have to dig in deeper into the scene-graph to implement a more efficient method for frame capturing, and utilize some 3rd party library to encode the frames to video.

I don't know what your problem is with the FastBlur - for me it works, but has too weak an effect.

Instead of doing it with swipeView.width increments, you could use the x position of your parent page in the SwipeView :