| 摘要 |
<p>A method of compositing multiple image layers is provided. The method of compositing multiple image layers comprises dividing a storage area of a frame buffer into a plurality of tile areas; determining image layers on which the compositing is to be performed for the respective tile areas; generating composite image layers for the respective tile areas by performing the compositing on the respective tile areas; and merging the composite image layers for the respective tile areas to generate an overall composite image layer, wherein the generating composite image layers includes reading information on image layers sequentially from a top image layer to a bottom image layer, determining necessity for reading of lower image layers by using the information on the image layers, and defining the image layer as an effective bottom image layer, when reading of lower image layers is not necessary, and generating the composite image layer by performing the compositing on the effective lowest image layer and upper image layers, while regarding the effective lowest image layer as a reference, and refraining from performing the compositing on the lower image layers.</p> |
