一种高效OpenGL多线程文本绘制方法

Efficient method for multi-thread text drawing based on OpenGL

OpenGL库没有提供直接的文本显示和处理函数,文献[4]给出一种基于GDI的OpenGL文本绘制方法,但该方法效率低,CPU占用量大。考虑到Windows多线程机制,对上述方法做出改进,提出了一种基于多线程的OpenGL文本绘制方法。该方法可有效利用多核处理器的优势,在对实时性要求较高或进行大批量文本数据绘制等方面有明显优势。实验结果表明,使用此方法能够有效提高文本绘制效率,改善用户体验。

The OpenGL Library has not offer the function of text display and processing directly. Literature 4 provided a method of OpenGL drawing text based on GDI, but the efficiency was low and occupied too much of CPU time. Considering the feature of Windows multi-threading mechanism, some improvements are made, and a new method for text drawing in OpenGL based on multi-thread is proposed. This method can effectively utilize the advantages of multi-core processor, and add obvious advantages to high requirement of real-time or large quan- tities of text data drawing. Experimental results show that the application of this method can improve text drawing efficiency and improve user＇ s experience.