extern void jwzgles_glRectf (GLfloat, GLfloat, GLfloat, GLfloat);
extern void jwzgles_glRecti (GLint, GLint, GLint, GLint);
extern void jwzgles_glLightModelfv (GLenum, const GLfloat *);
extern void jwzgles_glRectf (GLfloat, GLfloat, GLfloat, GLfloat);
extern void jwzgles_glRecti (GLint, GLint, GLint, GLint);
extern void jwzgles_glLightModelfv (GLenum, const GLfloat *);