It then fills the area with a mapping, which is an imagebuffer used to color up the painting area of each stroke.
然后,它使用一个映射填充该区域,这个映射是用于对每个笔触的绘图区域着色的图像缓冲区。
2
Additional capabilities provide the means of testing the pixel color of a screen coordinate or even capturing a whole area of the screen as an imagebuffer.