Vertex Shader
void main() { gl_FrontColor = gl_Color; gl_Position = ftransform(); }
Fragment Shader
void main() { gl_FragColor = gl_Color; }
Vertex Shader
void main() { gl_FrontColor = gl_Color; gl_Position = ftransform(); }
Fragment Shader
void main() { gl_FragColor = gl_Color; }
原文：https://www.cnblogs.com/coolbear/p/8417731.html