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A Simple and Efficient Antialiasing Method with the RUF buffer  

김병욱 (연세대학교 대학원 컴퓨터과학과)
박우찬 (연세대학교)
양성봉 (연세대학교 공과대학 컴퓨터과학과)
한탁돈 (연세대학교 공과대학 컴퓨터과학과)
Abstract
In this paper, we propose a simple and efficient hardware-supported antialiasing algorithm and its rendering scheme. The proposed method can efficiently reduce the required memory bandwidth as well as memory size compared to a conventional supersampling when rendering 3D models. In addition, it can provide almost the same high quality scenes as supersampling does. In this paper, we have introduced the RUF (Recently Used Fragment) buffer that stores some or whole parts of a fragment or two more the merged results of fragments that recently used in color calculation. We have also proposed a color calculation algorithm to deteriorate the image quality as referencing the RUF buffer. Because of the efficiency presented in the proposed algorithm, the more number of sampling points increases the more memory saving ratio we can gain relative to the conventional supersampling. In our simulation, the proposed method can reduce the amount of memory size by 31% and the memory bandwidth by 11% with a moderate pixel color difference of 1.3% compared to supersampling for 8 sparse sampling points.
Keywords
Antialiasing; supersampling; memory size; memory bandwidth; RUF buffer;
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