gl_FrontFacing

The gl_FrontFacing variable tells us if the current fragment is part of a front-facing or a back-...

根据我过去的经验，对的支持 gl_FrontFacing 参差不齐。有时它只是失败，有时它会导致回退到软件渲染。所以我尝试使用 GL_VERTEX_PROGRAM_TWO_SIDE ...

OpenGL Shading Language has a builtin Boolean variable gl_FrontFacing allowing you to do so. The ...

by Patricio Gonzalez Vivo. Gl_FrontFacing. Declaration / Example. Parameters. Description. See Al...

Available only in the fragment language, gl_FrontFacing is an input variable whose value is true ...