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How do I enable support for ProMotion displays?

Support for ProMotion on iOS requires two things:
  1. Using an API in the Apple runtime to set the desired FPS (range)
  2. Adding an additional entry into your app’sInfo.plist file

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Example Usage

let preferredFPS = UIScreen.main.maximumFramesPerSecond
// or
let preferredFPSRange = CAFrameRateRange(minimum: 60, maximum: Float(preferredFPS))
let viewModel = {
    let viewModel = RiveViewModel(fileName: "...")
    viewModel.setPreferredFramesPerSecond(preferredFramesPerSecond: preferredFPS)
    // or
    viewModel.setPreferredFrameRateRange(preferredFPSRange)
    return viewModel
}()
Additionally, add the following to your app’s Info.plist file: <key>CADisableMinimumFrameDurationOnPhone</key><true/> You can view more information about preferred FPS here, and about preferred FPS range here.

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Why is resource usage different compared to other libraries?

See our Resource Usage documentation for more details.