A Hybrid Generation Method of Visual Effects for Mobile Entertainment Applications

모바일 엔터테인먼트 애플리케이션을 위한 혼합적 시각 효과 생성 방법

  • Kim, Byung-Cheol (Information and Culture Technology Studies, Seoul National University)
  • 김병철 (서울대학교 정보문화학전공)
  • Received : 2015.10.24
  • Accepted : 2015.12.20
  • Published : 2015.12.28


This paper proposes a hybrid rendering method which combines pre-computed global illumination results and interactive local illumination techniques and thus could interactively produce photo-realistic visual effects for mobile entertainment applications. The proposed method uses the programmable shading capability of OpenGL, a de facto standard for computer graphics library so that it can be deployed in a real-world development environment. Also, it increases the rendering time by a negligible amount compared to normal rendering time since the pre-computed results are used as operands of plain arithmetic operations. Therefore it is expected to be applicable in practice for mobiles games which require real-time responsiveness to users.


Mobile Applications;Visual Effects;Hybrid Rendering;Global Illumination;Shader


  1. T. Whitted. An Improved Illumination Model for Shaded Display. Communications of the ACM, 23(6), June 1980, 343-349.
  2. M. F. Cohen, S. E. Chen, J. R. Wallace, and D. P. Greenberg. A progressive refinement approach to fast radiosity image generation. ACM SIGGRAPH '88, 75-84.
  3. B. T. Phong. Illumination for computer generated pictures, Communications of ACM, Vol. 18 (1975), no. 6, 311-317.
  4. R. Ramamoorthi and P. Hanrahan. An Efficient Representation for Irradiance Environment Maps. ACM SIGGRAPH '01, 497-500.
  5. P. Sloan, J. Kautz, and J. Snyder. Precomputed Radiance Transfer for Real-Time Rendering in Dynamic, Low Frequency Lighting Environments, SIGGRAPH '02, 527-536.
  6. R. Green. Spherical Harmonic Lighting: The Gritty Details. Proceedings of the Game Developers Conference, 16 Jan, 2003, 1-47.
  7. A. Keller. Instant Radiosity. ACM SIGGRAPH '97, 49-56.
  8. K. Dmitriev, S. Brabec, K. Myszkowski and H.-P. Seidel. Interactive Global Illumination Using Selective Photon Tracing. Proceedings of 13th Eurographics Workshop on Rendering, 2002, 25-36.
  9. J. T. Kajiya. The Rendering Equation, SIGGRAPH '86, 143-150
  10. T. Akenine-Moller and E. Haines. Real-Time Rendering, 2nd Ed., A K Peters: Natick, 2002. Cited on p. 73.
  11. M. F. Cohen and D. P. Greenberg. The Hemi Cube: A Radiosity Solution For Complex Environments, SIGGRAPH'85, 31-40.
  12. L. Williams. Casting Curved Shadows on Curved Surfaces, SIGGRAPH'78, 270-274.
  13. M. Segal, C. Korobkin, R. v. Widenfelt, J. Foran and P. Haeberli. Fast Shadows and Lighting Effects Using Texture Mapping, SIGGRAPH'92, 249-252.
  15. ATI Technologies Inc. Radeon charisma engine and pixel tapestry architecture. White Paper, 2000.
  16. K. Turkowski. Transformations of Surface Normal Vectors with applications to three dimensional computer graphcis, Apple Technical Report No. 22, 6 July 1990.