Abstract
This paper presented a method of global illumination in Graphic Processing Unit(GPU),which was based on the GPU-programmable rendering pipelines,combined with Pre-computed Radiance Transfer(PRT) formula and decoded by spherical harmonic function,and then the real-time global illumination was rendered.In the process of the pre-computation,the high frequency signal was reconstructed by wavelet,so as not to lose the high frequency signal and the simulation scene was of high reality.According to the information of the visibility for the large-scale scene,the large-scale scene was subdivided by using the method of adaptive subdivision,and the rendering has high efficiency.The experimental results show that the proposed method can generate the global illumination quickly in the simulation system and it has high efficiency and better realistic quality.
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