什么是GLEW GLFW GLM

GLEW是一个基于OpenGL图形接口的跨平台的C++扩展库。GLEW能自动识别当前平台所支持的全部OpenGL高级扩展涵数。只要包含glew.h头文件，就能使用gl,glu,glext,wgl,glx的全部函数。GLEW支持目前流行的各种操作系统。

官方解释如下：GLEW is an open-source cross-platform extension loading library with thread-safe support for multiple rendering contexts and automatic code generation capability. GLEW provides easy-to-use and efficient methods for checking OpenGL extensions and core functionality.

GLFW是一个跨平台的OpenGL应用框架，支持窗口创建，接受输入和事件等功能。

官方解释如下：GLFW is an Open Source, multi-platform library for creating windows with OpenGL contexts and receiving input and events. It is easy to integrate into existing applications and does not lay claim to the main loop.

GLM是一个OpenGL的数学库

官方解释如下：GLM is a C++ mathematics library for graphics software based on the OpenGL Shading Language (GLSL) specification.