Realistic Surface Details Of The Draw

This thesis discusses the methods rendering the surface realism. How to reflect the gloss and detail geometry structure on the surface always is an important field in the computer graphics. Currently, people have proposed some methods that based on mathematic physical model or based on measuring actual samples. The two kinds of methods have different pros and cons. The methods based on mathematic physical model are simple in data processing, but the rendering results are not very fine. One the other hand, the methods based on measuring actual simples can give out fine rendering results, but they need a large number of data and complicated data processing technology. In this thesis, the author proposed a method that combines the measuring data with the mathematic physical model. The method applies the BRDF data to the algorithm that rendering the detail surface by ray-tracing on a height map, then the method can render the gloss and detail geometry structure of a surface at the same time; however, the method need not a large number of data and special data processing. Furthermore, the author introduced how to use the programmable graphics hardware to accelerate the method. After representing BRDF data and height map as texture, the vertex shading program can use they to compute the proper reflection according to the direction of light and view. After accelerated by the hardware, the method can render the realism surface in real-time.