swift - watchOS 3 支持 SCNLightingModelPhysicallyBased

Question

SCNLightingModelPhysicallyBased 是 iOS 10 引入的新光照模型。使用它时，您不必在 SceneKit 场景中放置灯光，而是可以使用环境光照。你可以试试这个 open source project .

它在我运行 iOS 10 的 iPhone 6 上运行良好。但是，它在我的 watchOS 3 Apple Watch 上不起作用。我相信这是因为 watch 运行的是 OpenGL 渲染 API 而不是 Metal 渲染 API。

似乎没有办法强制 watch 在 WKInterfaceSCNScene 上使用 Metal 渲染 API。

documentation for SCNLightingModelPhysicallyBased说 watchOS 3 支持它。

如何让 watch 运行 Metal 渲染？

Answer 1

来自 Existing Frameworks Now Available in watchOS 下的 watchOS 发行说明:

SceneKit in watchOS supports most of the features you use on other platforms, including lighting and shading, animation, physics, and particle systems, with the following exceptions:

• 3D spatial audio implemented using SCNAudioSource or SCNAudioPlayer.Instead, use playAudioSource:waitForCompletion: or the WatchKit soundor haptic APIs.
• Custom Metal or OpenGL shader programs implementedusing SCNProgram or SCNTechnique. Instead, customize SceneKitrendering with shader modifiers (to learn more, see SCNShadable).
• Core Image filters for node rendering implemented using the SCNNodefilters property. Instead, customize rendering with shader modifiers(see SCNShadable).
• The physically-based material and lighting and HDRcamera effects introduced in iOS 10, tvOS 10, and OS X v10.12.