Unity launches a closed beta version that supports Apple Vision Pro, and applications are officially open!

Unity has just launched a closed beta of visionOS support, and developers can apply to participate. Unity first announced support for visionOS earlier in June. At WWDC2023, Apple acknowledged the already existing Unity AR/VR development community, stating that "we know a group of developers who have been building incredible 3D applications for years," and announced a "deep partnership" with Unity.

向visionOS移植Unity的VR应用（苹果称之为“全沉浸式体验”）相当简单，使用类似iOS的构建链，Unity与苹果的XCode IDE接口。例如，Rec Room已经确定将会在VisionPro上发布，而只需进行少量修改。

However, building an AR application in Unity that runs in a visionOS "shared space" is very different and introduces several important limitations that developers need to be aware of.

Content in shared spaces is rendered using Apple's RealityKit framework, rather than Unity's own rendering subsystem. To convert Unity's mesh renderers, materials, shaders, and particles to RealityKit, Unity developed a new system called PolySpatial.

However, PolySpatial only supports certain materials and shaders. For the Universal Render Pipeline (URP), it supports Lit, Simple Lit, and Complex Lit shaders, while for the built-in Render Pipeline, it only supports Standard shaders. Custom shaders and material types are supported, but only through the Shader Graph visualization tool, and handwritten shaders are not supported.

However, PolySpatial has a unique advantage: you can go straight to play mode without having to rebuild every time. Unity says this should drastically reduce iterative testing times.

Interested developers canfill out this formApply to participate in the closed beta of Unity visionOS support.