一种采用双层BVH的光线追踪硬件加速器及其应用方法
By designing a ray tracing hardware accelerator with a two-layer BVH (Browser-Vehicle Hierarchy) and utilizing instantiated description arrays for local coordinate system transformation, the problem of high BVH reconstruction cost in dynamic scenes is solved, ray tracing efficiency is improved, and hardware simplicity is maintained.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NAT UNIV OF DEFENSE TECH
- Filing Date
- 2023-06-15
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are costly to build BVH in dynamic scenes, resulting in low ray tracing efficiency and a lack of hardware accelerator designs for two-layer BVH.
A ray tracing hardware accelerator with a two-layer BVH is designed, including a stack, a ray traversal unit, a coordinate system transformation module, and a triangle intersection test unit. The conversion between the local coordinate system and the world coordinate system is realized by instantiating the description array, reducing the need to reconstruct the BVH.
It significantly improves the efficiency of ray tracing in dynamic scenes, has a simple hardware structure, adds little hardware overhead, and meets the area and power consumption requirements of ray tracing hardware accelerators.
Smart Images
Figure CN116824021B_ABST