Labels:dialog box | sky | window OCR: glShadeMod elGL SMOOTH; glBogin(GL POLYGON) pen tagon * giCol r3f0 t3f0.0 Vert3f0.7 lCol 3f0 blue Ver t3f glVer tex3f1 glVer t01310 g1End Figure Example of generating 3D polygor with amooth shao ine bet weer ver tices glShadeModel glcolor3f VerteI3f0 lcolor3f Verter3f ading