Right-handed coordinate system關於「W coordinate OpenGL」標籤，搜尋引擎有相關的訊息討論：
What does the 1/w coordinate stand for in gl_FragCoord?stackoverflow.com › questions › what-does-the-1-w-coord...glRasterPos2s function (Gl.h) - Win32 apps | Microsoft Learnlearn.microsoft.com › ... › Graphics and Gaming › OpenGLWhat can I do with the 4th component of gl_Positi