单项选择题
要得到如图示的效果,glBegin()函数的类型参数可取为()
A.GL_POLYGON B.GL_LINES C.GL_LINE_STRIP D.GL_LINE_LOOP
A.9 B.12 C.16 D.20
A.glOrtho() B.gluPerspective() C.glViewport() D.gluLookAt()