glRasterPos3iv,    glRasterPos3sv,    glRasterPos4dv,    glRasterPos4fv,
       glRasterPos4iv, glRasterPos4sv - specify the raster position  for  pixel
       operations

C SPECIFICATION
       void GLAPIENTRY glRasterPos2d( GLdouble x,
                                      GLdouble y )
       void GLAPIENTRY glRasterPos2f( GLfloat x,
                                      GLfloat y )
       void GLAPIENTRY glRasterPos2i( GLint x,
                                      GLint y )
       void GLAPIENTRY glRasterPos2s( GLshort x,
                                      GLshort y )
       void GLAPIENTRY glRasterPos3d( GLdouble x,
                                      GLdouble y,
                                      GLdouble z )
       void GLAPIENTRY glRasterPos3f( GLfloat x,
                                      GLfloat y,
                                      GLfloat z )
       void GLAPIENTRY glRasterPos3i( GLint x,
                                      GLint y,
                                      GLint z )
       void GLAPIENTRY glRasterPos3s( GLshort x,
                                      GLshort y,
                                      GLshort z )
       void GLAPIENTRY glRasterPos4d( GLdouble x,
                                      GLdouble y,
                                      GLdouble z,
                                      GLdouble w )
       void GLAPIENTRY glRasterPos4f( GLfloat x,
                                      GLfloat y,
                                      GLfloat z,
                                      GLfloat w )
       void GLAPIENTRY glRasterPos4i( GLint x,
                                      GLint y,
                                      GLint z,
                                      GLint w )
       void GLAPIENTRY glRasterPos4s( GLshort x,
                                      GLshort y,
                                      GLshort z,
                                      GLshort w )

PARAMETERS
       x, y, z, w
                Specify  the x, y, z, and w object coordinates (if present) for
                the raster position.

C SPECIFICATION
       void GLAPIENTRY glRasterPos2dv( const GLdouble *v )
       void GLAPIENTRY glRasterPos2fv( const GLfloat *v )
       void GLAPIENTRY glRasterPos2iv( const GLint *v )
       void GLAPIENTRY glRasterPos2sv( const GLshort *v )
       The  GL  maintains  a 3D position in window coordinates.  This position,
       called the raster position, is used to position pixel and  bitmap  write
       operations.  It  is  maintained  with  subpixel accuracy.  See glBitmap,
       glDrawPixels, and glCopyPixels.

       The current raster position consists of three window coordinates (x,  y,
       z),  a  clip  coordinate  value (w), an eye coordinate distance, a valid
       bit, and associated color data and texture coordinates.  The  w  coordi‐
       nate  is a clip coordinate, because w is not projected to window coordi‐
       nates.  glRasterPos4 specifies object coordinates x, y, z, and w explic‐
       itly.   glRasterPos3 specifies object coordinate x, y, and z explicitly,
       while w is implicitly set to 1.  glRasterPos2 uses the  argument  values
       for x and y while implicitly setting z and w to 0 and 1.

       The  object  coordinates  presented by glRasterPos are treated just like
       those of a glVertex command: They are transformed by  the  current  mod‐
       elview and projection matrices and passed to the clipping stage.  If the
       vertex is not culled, then it is projected and scaled to window  coordi‐
       nates,   which   become   the  new  current  raster  position,  and  the
       GL_CURRENT_RASTER_POSITION_VALID flag is set.  If the vertex is  culled,
       then  the valid bit is cleared and the current raster position and asso‐
       ciated color and texture coordinates are undefined.

       The current raster position also includes some associated color data and
       texture     coordinates.      If     lighting     is    enabled,    then
       GL_CURRENT_RASTER_COLOR (in RGBA mode)  or  GL_CURRENT_RASTER_INDEX  (in
       color  index mode) is set to the color produced by the lighting calcula‐
       tion (see glLight, glLightModel, and
       glShadeModel).  If lighting is disabled, current color  (in  RGBA  mode,
       state  variable  GL_CURRENT_COLOR)  or color index (in color index mode,
       state variable GL_CURRENT_INDEX) is used to update  the  current  raster
       color.

       Likewise,  GL_CURRENT_RASTER_TEXTURE_COORDS  is updated as a function of
       GL_CURRENT_TEXTURE_COORDS, based on the texture matrix and  the  texture
       generation  functions  (see  glTexGen).   Finally, the distance from the
       origin of the eye coordinate system to the vertex as transformed by only
       the modelview matrix replaces GL_CURRENT_RASTER_DISTANCE.

       Initially,  the  current  raster  position  is (0, 0, 0, 1), the current
       raster distance is 0, the valid bit is set, the associated RGBA color is
       (1,  1,  1, 1), the associated color index is 1, and the associated tex‐
       ture   coordinates   are   (0,   0,    0,    1).     In    RGBA    mode,
       GL_CURRENT_RASTER_INDEX  is  always  1; in color index mode, the current
       raster RGBA color always maintains its initial value.

NOTES
       The raster position is modified both by glRasterPos and by glBitmap.

       When the raster position coordinates are invalid, drawing commands  that
       are  based  on the raster position are ignored (that is, they do not re‐
       sult in changes to GL state).
       GL_INVALID_OPERATION is generated if glRasterPos is executed between the
       execution of glBegin and the corresponding execution of glEnd.

ASSOCIATED GETS
       glGet with argument GL_CURRENT_RASTER_POSITION
       glGet with argument GL_CURRENT_RASTER_POSITION_VALID
       glGet with argument GL_CURRENT_RASTER_DISTANCE
       glGet with argument GL_CURRENT_RASTER_COLOR
       glGet with argument GL_CURRENT_RASTER_INDEX
       glGet with argument GL_CURRENT_RASTER_TEXTURE_COORDS

SEE ALSO
       glBitmap,        glCopyPixels,       glDrawArrays,       glDrawElements,
       glDrawRangeElements, glDrawPixels, glTexCoord, glTexGen, glVertex

                                                                GLRASTERPOS(3G)