Rendering performance improvements #1124
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| // We have already parsed the whole document as Subtext but | ||
| // as part of rendering we will re-parse each block again. | ||
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| // This has a significant cost in list views. | ||
| Self.renderer.render(renderable.block.description) |
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Need to rethink this rendering approach at some point.
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Could we change the API here to take a Subtext instance instead? https://github.com/subconsciousnetwork/subconscious/blob/main/xcode/Subconscious/Shared/Parsers/SubtextAttributedStringRenderer.swift#L151
| colorScheme == .dark ? DeckTheme.darkBg : DeckTheme.lightBg | ||
| ) | ||
| var body: some View { | ||
| (colorScheme == .dark ? DeckTheme.darkBg : DeckTheme.lightBg) |
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It doesn't seem like much, but directly rendering a LinearGradient as a view vs. using it as a background on a frame has a massively reduced rendering cost.
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| @@ -87,7 +87,6 @@ struct AppView: View { | |||
| .onChange(of: self.scenePhase) { phase in | |||
| store.send(.scenePhaseChange(phase)) | |||
| } | |||
| .sentryTrace("AppView") | |||
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Too expensive and not actually useful without forking out more money to sentry.
| .onAppear { | ||
| selectedTab = store.state.selectedAppTab | ||
| } | ||
| .onChange(of: selectedTab) { v in |
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Note: on iOS 17 we'll need to update this to
.onChange(of: selectedTab) { _, v in
// ...
}| // We have already parsed the whole document as Subtext but | ||
| // as part of rendering we will re-parse each block again. | ||
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| // This has a significant cost in list views. | ||
| Self.renderer.render(renderable.block.description) |
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Could we change the API here to take a Subtext instance instead? https://github.com/subconsciousnetwork/subconscious/blob/main/xcode/Subconscious/Shared/Parsers/SubtextAttributedStringRenderer.swift#L151
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