Windows 10 UWP混合现实应用：如何实现双眼差异化内容显示？

Great question! Let’s dive into how you can pull this off in a Windows 10 UWP app for Mixed Reality, especially targeting the Mixed Reality Portal window.

First, the straight answer: there’s no out-of-the-box XAML element like <mixedreality target="lefteye"> that lets you directly tag content for left/right eyes. But don’t worry—there are ways to achieve this with XAML integration, even if it requires a bit of code behind or helper libraries.

Here are your best paths forward:

• Wrap XAML content into per-eye render targets via Holographic API
  You can use the Windows Mixed Reality holographic APIs (like HolographicSpace, HolographicFrame, and SwapChainPanel) to create separate render targets for each eye. For each eye’s render pass, you can render different XAML UI trees (or modify existing XAML content’s visibility/state) before pushing it to the eye’s swap chain. This lets you keep most of your UI in XAML, while handling the per-eye routing in code.

• Use a helper library like StereoKit for simplified XAML integration
  StereoKit has solid UWP support and lets you work with XAML alongside mixed reality content. It provides APIs to specify content that should only appear for the left or right eye, and you can host XAML elements within its stereoscopic view. While this adds a dependency, it gets you much closer to the clean, declarative pattern you’re hoping for—you could even wrap its functionality into a custom XAML control to match your desired syntax.

• Build a custom XAML control to abstract per-eye logic
  If you want to stick to pure UWP without external libraries, you can create a custom ContentControl subclass with an EyeTarget dependency property (accepting Left, Right, or Both). In the control’s code behind, you’d hook into the holographic frame updates to toggle visibility or swap content based on which eye is being rendered. This way, your XAML can look something like:

  <local:PerEyeContentControl EyeTarget="Left">
      <TextBlock Text="Left Eye Only!" />
  </local:PerEyeContentControl>
  <local:PerEyeContentControl EyeTarget="Right">
      <TextBlock Text="Right Eye Only!" />
  </local:PerEyeContentControl>
  

  Which is pretty close to your ideal syntax.

A quick note: Unity’s built-in support makes this feel straightforward because it handles the stereoscopic rendering pipeline under the hood. For UWP native, you’re working closer to the holographic system’s raw render passes, but the XAML integration tools still let you keep your UI design in XAML rather than jumping to low-level DirectX rendering.

All these approaches work within the Mixed Reality Portal window, so you don’t need to target a standalone headset if that’s not your goal.

内容的提问来源于stack exchange，提问作者Nick