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GLXUSEXFONT()					GLXUSEXFONT()

NAME
       glXUseXFont - create bitmap display lists from an X font

C SPECIFICATION
       void glXUseXFont( Font font,
			 int first,
			 int count,
			 int listBase )

PARAMETERS
       font	Specifies  the	font from which character glyphs
		 are to be taken.

       first	Specifies the index of the  first  glyph  to  be
		 taken.

       count	Specifies the number of glyphs to be taken.

       listBase Specifies the index of the first display list to
		 be generated.

DESCRIPTION
       glXUseXFont generates count display lists, named listBase
       through	listBase+count-1,   each   containing	a  single
       glBitmap command.  The parameters of the glBitmap  command
       of display list listBase+i are derived from glyph first+i.
       Bitmap parameters xorig, yorig, width, and height are com-
       puted  from  font  metrics as descent-1, -lbearing, rbear-
       ing-lbearing, and ascent+descent, respectively.	xmove  is
       taken  from  the glyph's width metric, and ymove is set to
       zero.  Finally, the glyph's  image  is  converted  to  the
       appropriate format for glBitmap.

       Using glXUseXFont may be more efficient than accessing the
       X font and generating the display lists	explicitly,  both
       because	the display lists are created on the server with-
       out requiring a round trip of the glyph data, and  because
       the server may choose to delay the creation of each bitmap
       until it is accessed.

       Empty display lists are created for all	glyphs	that  are
       requested  and  are  not defined in font.  glXUseXFont is
       ignored if there is no current GLX context.

ERRORS
       BadFont is generated if font is not a valid font.

       GLXBadContextState is generated if the current GLX context
       is in display-list construction mode.

       GLXBadCurrentWindow  is	generated if the drawable associ-
       ated with the current context of the calling thread  is	a

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GLXUSEXFONT()					GLXUSEXFONT()

       window, and that window is no longer valid.

SEE ALSO
       glBitmap, glXMakeCurrent

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