Research And Implementation Of Lighting Model In Three-Dimension Simulation Drilling System

The three-dimension simulation drilling system has been supplying strong service for the enterprises and the emergency departments which provide a realistic scene by the three-dimension platform. By imitating events caused by hazard source the three-dimension simulation drilling system coordinates the partnership between the departments and improve people’s ability of dealing with emergency as well. However,it still has quite a few drawbacks. Such as the lack of modern graphic pipeline support,the excessive computation of scene rendering on the condition of multiple lights, the poor render effects caused by hardware underutilizing, etc. In order to provide more realistic three-dimension renders effect, we need to study on the existing lighting model.The lighting model needs to be solved either the interaction between light and material or how the light spread in the scene. To solve the lighting problems of the three-dimension simulation drilling system, this article expounds several lighting models and makes an analysis to the rendering equation. According to the results, this article classifies the lighting computation of three-dimension simulation drilling system into local illumination and global illumination. Besides, this article provides the advantages and disadvantages of three common interpolation technologies and uses the phong shading to process vertex, and calculates the lighting in the fragment shader to reach better lighting effect.Afterwards, according to the lighting model, this article designs the lighting subsystem of the three-dimension simulation drilling system. This article provides a deferred shading framework which constructs a kind of compressed G-Buffer layout based the theory of Blinn-Phong and uses the light volume to model light source and optimize lighting calculation. The following article has also pointed out the global illumination’s integration and the post process’ s application for the system.At last, relying on the three-dimension simulation drilling system, this article implements the subsystem mention above and compares multiple experimental results.Experiments show that the new designed lighting system has a better efficiency under the multi-light source circumstance and has better visual experience. We achieve good results from the base of original system.