text: #ifndef __GL_XLU_H
  #define __GL_GLU_H
  
  #include <sys/cdefs.h>
  __BEGIN_DECLS
  
  #include <GL/gl.h>
  
  #define GLU_FALSE	0
  #define GLU_TRUE	1
  
  void gluPerspective(GLfloat fovy, GLfloat aspect, GLfloat zNear,
  	GLfloat zFar);
  
  void gluLookAt(GLfloat eyex, GLfloat eyey, GLfloat eyez, GLfloat centerx,
            GLfloat centery, GLfloat centerz, GLfloat upx, GLfloat upy,
            GLfloat upz);
  
  
  GLint gluBuild2DMipmaps( GLenum target, GLint internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *data );
  /*+HT*/
  
  
  void
  gluOrtho2D(GLfloat left, GLfloat right, GLfloat bottom, GLfloat top);
  
  void
  gluPickMatrix(GLfloat x, GLfloat y,
  	      GLfloat width, GLfloat height, GLint viewport[4]);
  
  
  
  GLint
  gluProject(GLfloat objx, GLfloat objy, GLfloat objz,
  	      const GLfloat modelMatrix[16],
  	      const GLfloat projMatrix[16],
             const GLint viewport[4],
  	      GLfloat *winx, GLfloat *winy, GLfloat *winz);
  
  
  /*-HT*/
  
  __END_DECLS
  
  #endif	/* __GL_GLU_H */
  
  