METHOD OF PROCESSING GRAPHICS WITH LIMITED MEMORY

摘要

A method for combining layers of an image represented using an intermediate format receives at least two layers from the plurality of layers to be combined and estimates resources required to combine the received layers using a first combining operation. The first combining operation comprises at least rasterising data of the received layers. The method attempts to combine the received layers using a second combining operation to produce an output in the intermediate format. In response, the method generates a combined layer for the image by combining the received layers in accordance with a selected one of the first combining operation (merge & flatten) and the second combining operation (merge). The selected combining operation is based on success of the attempt. Desirably the method is performed within a printer apparatus where limited memory and/or computing resources are available for image rendering which could otherwise limit the rendering of complex pages.

主权项

1. A method for combining layers of an image, the image comprising a plurality of layers represented using an intermediate format, said method comprising:
receiving at least two layers from the plurality of layers to be combined; estimating resources required to combine the received layers using a first combining operation, wherein the first combining operation comprises at least rasterising data of the received layers; based on the estimated resources for the first combining operation, attempting to combine the received layers using a second combining operation to produce an output in the intermediate format; and in response to the attempting, generating a combined layer for the image by combining the received layers in accordance with a selected one of the first combining operation and the second combining operation, wherein the selected combining operation is based on success of the attempt.