Introduction to Passthrough API: Developing for Mixed Reality

Developing for Mixed Reality (MR) requires mastering the Passthrough API. This allows developers to render virtual objects on top of the real-world video feed. In Unity, the 'Meta XR SDK' or 'OpenXR' provides components to enable passthrough and handle 'room mesh' data, allowing virtual items to interact with physical furniture. Key concepts include 'Selective Passthrough,' where only specific areas of the real world are visible, and 'Passthrough Stylization,' which can apply color filters or edge-detection effects to the real-world feed. Understanding these APIs is essential for creating apps that seamlessly blend digital content with the user's physical surroundings, such as AR productivity tools or interactive tabletop games.