Quick text rendering method of embedded system

Abstract

The invention provides a quick character rendering method for an embedded system, which comprises the following steps of: initializing each character in a font library file, generating a vector bitmap corresponding to each character, and loading the vector bitmap into a target machine memory; according to the requirement of the initial display interface, characters to be rendered are selected, an initial texture cache is created, the initial texture cache at least comprises one texture cache partition, and vector bitmaps of the characters of the same font and the same font size are stored in the texture cache partitions; when the display interface is changed, on the basis of the to-be-rendered characters in the new display interface, the texture cache of the previous display interface is updated to form a new texture cache, and the to-be-rendered characters in the new display interface are rendered and displayed. According to the rapid character rendering method, rapid calling and rendering display can be achieved, the process that the characters on the display interface are read and rendered again from the font library file is reduced, the rendering efficiency is improved, meanwhile, the operation and storage space is saved, and it is guaranteed that an embedded system operates safely and reliably.

Description

technical field [0001] The invention belongs to the field of embedded system application software, relates to the technical field of image processing, in particular to a fast text rendering method of an embedded system. Background technique [0002] Embedded systems such as computers, mobile phones, tablet computers and other electronic devices are more and more widely used, and the text display and rendering efficiency requirements of the display interface of the embedded system are also continuously improved. At present, when the real-time requirements are high or a large amount of text data is drawn, due to the limitation of the processing performance and storage space of the system, the text display and rendering efficiency of the display interface is not high, and when the text is rendered, the system has no texture In the update process of the cache, in the display interface, the text needs to be rendered again, or when new text is displayed and rendered, all the text ...

AI Technical Summary

Problems solved by technology

At present, when the real-time requirements are high or a large amount of text data is drawn, due to the limitation of the processing performance and storage space of the system, the text display and rendering efficiency of the display interface is not high, and when the text is rendered, the system has no texture In the update process of the cache, in the display interface, the text needs to be rendered again, or when new text is displayed and rendered, all the text in the display interface needs to be re-rendered, which will cause the text rendering efficiency of the display interface to be low. The rendering speed is slow, which cannot satisfy the operating efficiency of the system

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