load optimization (iphone)

[InfiniteFalltrough]

perhaps someone has already encountered the following behavior:

• memory consumption increases by 2 times when rewinding the animation back and forth, but only to advanced level and stops (not so critical)
• energy consumption is consistently high (sometimes even very high) (critical issue)
• but at the same time, CPU load is ~8-11% (during playing 30-35%)

does anyone know possible ways to optimize (at least energy consumption)?

(update: Skia/Rive - doesn't matter)

[HayesGordon]

Hi @InfiniteFalltrough, thanks for reporting and sorry that you're running into this. Could you share a sample project with us that shows how you're using the SDK with the animations you're using that are showing these metrics?

[InfiniteFalltrough]

Hi @InfiniteFalltrough, thanks for reporting and sorry that you're running into this. Could you share a sample project with us that shows how you're using the SDK with the animations you're using that are showing these metrics?

sorry for the late response... metrics:

https://github.com/rive-app/rive-ios/assets/65627244/e1a50c1c-8f44-4387-89f4-c2df59491641

code:

struct ContentView: View {

@State private var model = RiveViewModel(fileName: "sample/scrub-blend.2dc5d861e4cae3df534b", stateMachineName: "State Machine 1", fit: .fitWidth, alignment: .center, artboardName: "Blend")
@State private var scrollPercentage: CGFloat = 0

var body: some View {
    PositionReadableScrollView(content: {
        VStack {
            model.view().frame(width: width, height: height)
            Rectangle().frame(height: 200).foregroundColor(.clear)
            Spacer()
        }.frame(height: height + 200)
    }, onScroll: { value in
        let scroll = (value * -1) / 4
        model.setInput("ScrollPercentage", value: scroll)
    })
}

}

struct PositionReadableScrollView<Content>: View where Content: View { let axes: Axis.Set = .vertical let content: () -> Content let onScroll: (CGFloat) -> Void

var body: some View {
    ScrollView(axes) {
        content()
            .background(
                GeometryReader { proxy in
                    let position = (
                        axes == .vertical ?
                        proxy.frame(in: .named("scrollID")).origin.y :
                        proxy.frame(in: .named("scrollID")).origin.x
                    )
                    Color.clear
                        .onChange(of: position) { position, _ in
                            onScroll(position)
                        }
                }
            )
    }
    .coordinateSpace(.named("scrollID"))
}

}

I can even share our .riv for test, but privately, not here (if needed).

Hope something can be done about it.... I'll be grateful for any response!

[taydr]

do you think it's because of the onscroll calling rive more frequently? (i'm looking to do something similar)

onScroll: { value in
        let scroll = (value * -1) / 4
        model.setInput("ScrollPercentage", value: scroll)
    })

[InfiniteFalltrough]

do you think it's because of the onscroll calling rive more frequently? (i'm looking to do something similar)

onScroll: { value in
        let scroll = (value * -1) / 4
        model.setInput("ScrollPercentage", value: scroll)
    })

no clue, really, the documentation for the iOS part doesn't say anything useful. (there is an opinion that the entire animation is redrawn completely, and not just rewound - just guesswork)

we have a huge animation (comics) and so far we have settled on Lottie since the metrics are much better than Rive in all respects... but I hope that Rive will be able to solve this problem, since this is a new and very convenient solution for production and I would like to work with it!