Does RealityKit have a way to do instanced rendering?
When I clone a ModelEntity, and add it to scene, I get 1 draw call per ModelEntity – even if I don't change any properties on the entity, etc.
I was hoping to use RealityKit for a 3D .nonAR game, and think this would be required.
Post
Replies
Boosts
Views
Activity
Is it possible to use/draw a SwiftUI view in TextKit 2? The NSTextLayoutManagerDelegate seems to be built around returning a NSTextLayoutFragment.
Since NSTextLayoutFragment is a class, I can't subclass it and use SwiftUI.
I'd love to create my views using SwiftUI, since it's a lot faster than figuring out CGPaths, pixel perfect anti-aliasing, etc.
Thanks!
Is it possible to only allow a single window instance on macOS?
WindowGroup/DocumentGroup allow the user to create multiple instances of a window. I'd like to only allow one, for an Onboarding sequence.
I've checked the Scene documentation - https://developer.apple.com/documentation/swiftui/scene, and it appears the only types conforming to the Scene protocol are WindowGroup, DocumentGroup and Settings. How can I create a single Window in a SwiftUI App?
An example use case:
struct TutorialScene: Scene {
var body: some Scene {
	// I don't want to allow multiple windows of this Scene!
	WindowGroup {
		TutorialView()
	}	
}
I have an Onboarding Window/Scene I want to appear on the first launch of the app, or when a use clicks a menu command.
Using an AppStorage with a boolean value would be perfect, but when I try to add an if in my SceneBuilder I get the following error: Closure containing control flow statement cannot be used with function builder 'SceneBuilder'.
import SwiftUI
@main
struct MyApp: App {
@AppStorage("tutorialVisible") var tutorialVisible: Bool = true
var body: some Scene {
MainScene()
if tutorialVisible {
TutorialScene()
}
}
}
How can this be done?
I can't seem to get my SwiftUI preview to work in a Swift Package created with the "Multiplatform Swift Package" Xcode 12 template. Does this feature require macOS 11+? I'm currently on Catalina with the Xcode 12 beta.
Here's what I get from the SwiftUI Preview Diagnostics on macOS:
HumanReadableNSError: connectToPreviewHost: Failed to connect to 2247: Error Domain=com.apple.dt.ProcessAttachUtilities Code=0 "Failed to get task for pid 2247: 0" UserInfo={NSLocalizedDescription=Failed to get task for pid 2247: 0}
com.apple.dt.xcodepreviews.service (17):
and on iOS:
'SwiftUIView_Previews' is not a member type of 'NoiseKit'
CompileDylibError: Failed to build SwiftUIView.swift
Compiling failed: 'SwiftUIView_Previews' is not a member type of 'NoiseKit'
/Users/rudedogg/Library/Developer/Xcode/DerivedData/NoiseKit-gefbuwplfdnsqkghveaurldpgavw/Build/Intermediates.noindex/Previews/NoiseKit/Intermediates.noindex/NoiseKit.build/Debug-appletvsimulator/NoiseKit.build/Objects-normal/x86_64/SwiftUIView.2.preview-thunk.swift:22:43: error: 'SwiftUIView_Previews' is not a member type of 'NoiseKit'
typealias SwiftUIView_Previews = NoiseKit.SwiftUIView_Previews
~~~~~~~~ ^
/Volumes/Files/work/packages/NoiseKit/Sources/NoiseKit/NoiseKit.swift:1:8: note: 'NoiseKit' declared here
struct NoiseKit {
^
/Users/rudedogg/Library/Developer/Xcode/DerivedData/NoiseKit-gefbuwplfdnsqkghveaurldpgavw/Build/Intermediates.noindex/Previews/NoiseKit/Intermediates.noindex/NoiseKit.build/Debug-appletvsimulator/NoiseKit.build/Objects-normal/x86_64/SwiftUIView.2.preview-thunk.swift:21:34: error: 'SwiftUIView' is not a member type of 'NoiseKit'
typealias SwiftUIView = NoiseKit.SwiftUIView
~~~~~~~~ ^
/Volumes/Files/work/packages/NoiseKit/Sources/NoiseKit/NoiseKit.swift:1:8: note: 'NoiseKit' declared here
struct NoiseKit {
^
Is there a way to apply custom shaders to RealityKit ModelEntitys?
Also, is it possible to create particle systems in RealityKit?
I have a library I created with Swift Package Manager, and I'd like to use it in both my Containing App and Safari App Extension.- I've added the library to the Project using the new "Swift Packages" tab in Xcode.- The Safari App Extension Target has my library added under "Frameworks and Libraries".With this configuration I get "Undefined symbol" compiler errors. If I add the library to the App under "Frameworks, Libraries, and Embedded Content", then I get:"Swift package product '{SWIFT PACKAGE}' is linked as a static library by '{APP NAME}' and '{EXTENSION NAME}'. This will result in duplication of library code."The odd thing is that the project compiles fine in Xcode 11.3.1. Did something change with SPM in the Xcode 11.4 beta? Maybe I should use a dynamic library? Or am I doing something else wrong?
I can't seem to get the SwiftUI TabView images to work on macOS, no matter what I try. I've tried different images, image sizes, etc. I've also swapped the Image/Text order in the .tabItem, and tried wrapping it in a VStack/Group.Are they just not working?struct PlaygroundView: View {
@State private var selectedTab: Int = 0
var body: some View {
TabView(selection: $selectedTab) {
Text("Tab 1 contents")
.tag(0)
.tabItem {
Image(nsImage: NSImage(named: NSImage.goLeftTemplateName)!)
Text("Tab 1")
}
Text("Tab 2 contents")
.tag(1)
.tabItem {
Image(nsImage: NSImage(named: NSImage.goRightTemplateName)!)
Text("Tab 2")
}
}
}
}