我正在使用Assimp导入一些3d模型。Assimp很棒，但它以非交错顶点格式存储所有内容。根据AppleOpenGLES编程指南，交错顶点数据在ios上是首选:https://developer.apple.com/library/ios/#documentation/3DDrawing/Conceptual/OpenGLES_ProgrammingGuide/TechniquesforWorkingwithVertexData/TechniquesforWorkingwithVertexData.html#//apple_ref/doc/uid/TP40008793-CH107-S