Pre-rendering refers to a special rendering style of non-realistic art, which resolves the basic appearance of three-dimensional objects into the flat color and outline, so that the object will achieve a 3D perspective while presenting a 2D effect. The pre-rendering art can perfectly combine the stereoscopic sense of 3D with the color and vision of 2D images. Compared with plane 2D or 3D art, pre-rendering art can maintain the art style of 2D concept and simultaneously reduce the cost by shortening the production period to a certain extent. If you want to obtain a high-quality product in short time, pre-rendering art will be an ideal choice since it can produce with high efficiency using simpler material and lower level of hardware.