Global Illumination Performance in Real-Time Context

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Published:

(work in progress…)

Most of the Global Illumination (GI) genre algorithms suffer from convergence problem, make their application limited to the real-time applications. The Screen Space Ambient Occlusion (SSAO) and Screen Space Reflections (SSR) are also under the GI category and gives real-time performance. However, the light simulation is limited for both of the cases.

Some of the GI algorithms stand out for real-time performance could be:

  • ReSTIR Genre
  • Voxel-based GI, e.g., voxel Cone Tracing
  • Radiance Cascades
  • DDGI

References and Resources

  1. Lambru et al. (2021), Comparative Analysis of Real-Time Global Illumination Techniques in Current Game Engines (https://doi.org/10.1109/ACCESS.2021.3109663)