OSG新手入门编程资料：包括官方入门资料OpenSceneGraph_Quick_Start_Guide、OpenSceneGraph基本渲染理论、OSG_王锐《最长的一帧》、osgTutorial美国海军教程、OSG程序设计教程、StepIntoOpenSceneGraph。(OSG beginners programming information: including the official entry of OpenSceneGraph_Quick_Start_Guide, OpenS