Host Renderer Decouples XR Scene Graphs From Hardware
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Solution Overview
Problem
Current artificial reality systems face compatibility and inter-operability challenges due to the variety of hardware processor types and rendering techniques, leading to inefficiencies in rendering complex XR scenes across different devices and platforms.
Innovation Solution
A host renderer is introduced that decouples rendering from content sources, encoding scene graphs into a source-neutral format and issuing processor rendering calls to diverse hardware, enabling dynamic rendering across multiple XR applications and devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If rendering is tightly coupled with content sources using hardware-specific rendering calls, then rendering performance for specific hardware may be optimized, but compatibility and inter-operability across different hardware types and platforms deteriorate
Solution Approach 1:
The patent introduces a host renderer as an intermediary component between content sources and hardware rendering engines. This host renderer acts as a mediator that receives encoded scene graphs from diverse content sources, translates them into hardware-specific rendering calls, and issues them to the appropriate rendering engine. This intermediary layer enables compatibility across different hardware types without requiring content sources to be hardware-specific, thereby resolving the contradiction between compatibility and rendering complexity.
Solution Approach 2:
The patent segments the rendering pipeline into distinct functional components: content sources that generate encoded scene graphs, a host renderer that processes these graphs and manages hardware interaction, and hardware rendering engines that execute the rendering. This segmentation separates the rendering logic from content sources, allowing each component to be optimized independently and facilitating cross-platform compatibility while managing complexity through modular architecture.
2Adaptability or versatility
If multiple hardware processor types and rendering techniques are supported directly by content sources, then hardware versatility is improved, but processing efficiency and rendering performance deteriorate
Solution Approach 1:
The host renderer serves as an intermediary that consolidates hardware interaction in a centralized component optimized for processing efficiency. Instead of content sources directly managing multiple hardware types, the host renderer receives encoded scene graphs and efficiently translates them into hardware-specific calls, leveraging its specialized position in the pipeline to optimize processing performance while maintaining broad hardware support.
3Adaptability or versatility
If rendering calls are abstracted from content sources through a host renderer, then compatibility and extensibility are improved, but the complexity of the rendering pipeline increases
Solution Approach 1:
The host renderer is designed as a universal component that handles multiple functions: decoding encoded scene graphs, managing hardware rendering engines, translating rendering calls, and coordinating rendering across different hardware types. This multi-functionality consolidates what would otherwise be distributed complexity into a single extensible component, improving compatibility and extensibility while managing pipeline complexity through centralized design.
Data Source
AI summary
Aspects of the present disclosure are directed to a host renderer for artificial reality system(s) that provides dynamic rendering for application(s). Implementation of the host renderer decouple rendering of content from content source(s) to improve compatibility, extensibility, processing efficiency, and other aspects of content rendering. An artificial reality application can generate a scene graph with scene components, or renderable/drawable elements of the scene graph. The host renderer is configured to receive an encoded version of the artificial reality application's scene graph and issue processor rendering calls to render the drawable/renderable components of the scene graph. The host renderer abstracts the hardware level rendering calls and provides the artificial reality application access to hardware rendering via the host renderer. Implementations of the host renderer can perform rendering optimizations and issue a diverse set of processor rendering calls to diverse hardware.