A Lighting Rendering Method for Fixed Light Sources

Abstract

The invention relates to an illumination rendering method for a fixed light source. The method comprises a preprocessing stage and a real-time rendering stage. In the preprocessing stage, the diffusion grains of all object models in a scene is traversed in sequence, processing to the diffusion grains is carried out, and the color pattern information corresponding to each pixel point of the diffusion grains of the object models is acquired. In the real-time rendering stage, the illumination effect generated by a fixed light source is calculated according to the color pattern information corresponding to each pixel point of the object models, and the illumination rendering is carried out. Compared with the prior art, the illumination rendering method for the fixed light source transfers most computational process from the real-time rendering stage to the preprocessing stage, greatly reduces the computation amount of the real-time rendering stage, effectively saves the computing resource of a graphics processing unit (GPU), and improves rendering efficiency.

Description

technical field [0001] The invention relates to an information processing method, in particular to an illumination rendering method for a fixed light source. Background technique [0002] Illumination calculation is a part with a relatively large amount of calculation in the 3D rendering process. Due to the limitations of current hardware computing capabilities, it cannot support too many light sources in real-time 3D scenes. To solve this problem, there are several ways such as vertex lighting, pixel lighting, and delayed lighting are currently used. [0003] Vertex lighting calculates lighting results based on vertices, and then uses the lighting results of vertices to interpolate within the triangle. The advantage is that the amount of calculation is relatively small, but in many cases it may cause discontinuous lighting effects and loss of highlight information. [0004] Pixel lighting calculation is performed on each pixel, and the lighting result is directly obtained...

AI Technical Summary

Problems solved by technology

[0003] Vertex lighting calculates lighting results based on vertices, and then uses the lighting results of vertices to interpolate in the triangle. The advantage is that the amount of calculation is relatively small, but in many cases it may cause discontinuous lighting effects and loss of highlight information.

[0004] Pixel care is to perform lighting calculations on each pixel and directly obtain the lighting results. The amount of calculation increases with the rendering resolution, oversampling and scene organization, so the amount of calculation is relatively large, but the effect is relatively accurate.

Due to the large amount of calculation, it cannot support too many light sources

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