This paper discusses the challenges of applying virtual reality (VR) in visual simulation and real-time rendering for automotive research and development. Focusing on the application scenarios and practical needs of automotive virtual development, a high-performance VR computing system based on real-time ray tracing and parallel rendering has been established for the first time among domestic automotive companies. By using the Bounding Volume Hierarchy (BVH) acceleration structure while optimizing algorithm parameters and network configuration, high-precision real-time visualization of large-scale vehicle models has been achieved. The offline rendering process, which previously took several hours, has been optimized to real-time rendering in just 1～2 seconds. The system effectively simulates ambient light refraction and reflection on parts, light uniformity and leakage, and physical occlusion between parts. Compared with traditional rasterization rendering, this approach has made a significant breakthrough, achieving over 90% physical realism. Through full-process implementation in several vehicle projects, it has replaced many physical models and reduced sample costs in the R&D process.

real-time ray tracing  /  parallel rendering  /  optimization of algorithm parameters  /  refractive reflection  /  uniformity and leakage of lighting