一种二维矢量图形的硬件优化渲染算法

2D vector graphics rendering algorithm with low hardware cost for su- persampling antialiasing

提出了一种适用于嵌入式设备的二维矢量图形硬件优化渲染算法。在采用超采样反锯齿模式下,该算法中每个像素点只使用一个方向权重计数器,而并非以往算法中每个像素点使用多个计数器,从而达到节省硬件资源,并大幅减少渲染所需计算量的效果。实验结果表明,和以往算法相比,在8-queen超采样模式和XVGA显示大小下,能节省83%的存储器使用量和65%的存储器访问量,并且能取得较好的反锯齿效果。

This paper proposes a low hardware cost 2D vector graphics rendering algorithm which is based on common edge-flag rendering algorithm.The proposed algorithm only uses one counter per pixel instead of multiple counters for supers- ampling.Compared to the common rendering algorithm,the proposed one uses about 83% less memory capacity for a scan- line-sized buffer and saves nearly 65% of the memory accesses performed in implementing the 8-Queen supersampling algo- rithm for XVGA panels.Experiments show that the proposed algorithm performs antialiasing with fairly good quality as well.