The completion of this program is a magnifying glass feature, where the magnifying glass is a square shape, which is attached to the screen, so no matter how users can modify the point of view will not be affected. OpenGL implementation procedure

放大镜
......\OpenGL_App
......\..........\debug
......\..........\.....\OpenGL_App.exe
......\..........\Lookat matrix.txt
......\..........\OpenGL_App.ncb
......\..........\OpenGL_App.sln
......\..........\OpenGL_App.sln.old
......\..........\UpgradeLog.XML
......\..........\_UpgradeReport_Files
......\..........\....................\UpgradeReport.css
......\..........\....................\UpgradeReport.xslt
......\..........\....................\UpgradeReport_Minus.gif
......\..........\....................\UpgradeReport_Plus.gif
......\..........\在屏幕上画正方形.txt
......\..........\放大镜--正方形上贴图版本.txt
......\..........\汪归归_放大镜
......\..........\.............\Debug
......\..........\.............\.....\BuildLog.htm
......\..........\.............\.....\mt.dep
......\..........\.............\.....\OpenGL_App.exe
......\..........\.............\.....\OpenGL_App.exe.intermediate.manifest
......\..........\.............\.....\OpenGL_App.obj
......\..........\.............\.....\Teapot.obj
......\..........\.............\.....\vc80.idb
......\..........\.............\gl.h
......\..........\.............\Glass.bmp
......\..........\.............\glaux.H
......\..........\.............\GLAUX.LIB
......\..........\.............\glew.h
......\..........\.............\glew32.dll
......\..........\.............\glew32.lib
......\..........\.............\glext.h
......\..........\.............\GlU32.Lib
......\..........\.............\glut.h
......\..........\.............\glut32.dll
......\..........\.............\glut32.lib
......\..........\.............\Matrix4.h
......\..........\.............\OpenGL32.Lib
......\..........\.............\OpenGL_App.cpp
......\..........\.............\OpenGL_App.ncb
......\..........\.............\OpenGL_App.sln
......\..........\.............\OpenGL_App.vcproj
......\..........\.............\OpenGL_App.vcproj.PC-200908011347.Administrator.user
......\..........\.............\resource.h
......\..........\.............\Shader.cpp
......\..........\.............\Shader.h
......\..........\.............\stdafx.cpp
......\..........\.............\stdafx.h
......\..........\.............\Teapot.cpp
......\..........\.............\Teapot.h
......\..........\.............\Vector2.h
......\..........\.............\Vector3.h
......\..........\.............\Vector4.h
......\..........\.............\wglew.h
......\..........\.............\wglext.h

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