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glIndex(3G)		       OpenGL Reference			   glIndex(3G)


NAME    [Toc]    [Back]

     glIndexd, glIndexf, glIndexi, glIndexs, glIndexub,	glIndexdv, glIndexfv,
     glIndexiv,	glIndexsv, glIndexubv -	set the	current	color index

C SPECIFICATION    [Toc]    [Back]

     void glIndexd( GLdouble c )
     void glIndexf( GLfloat c )
     void glIndexi( GLint c )
     void glIndexs( GLshort c )
     void glIndexub( GLubyte c )

PARAMETERS    [Toc]    [Back]

     c	Specifies the new value	for the	current	color index.

C SPECIFICATION    [Toc]    [Back]

     void glIndexdv( const GLdouble *c )
     void glIndexfv( const GLfloat *c )
     void glIndexiv( const GLint *c )
     void glIndexsv( const GLshort *c )
     void glIndexubv( const GLubyte *c )

PARAMETERS    [Toc]    [Back]

     c	  Specifies a pointer to a one-element array that contains the new
	  value	for the	current	color index.

DESCRIPTION    [Toc]    [Back]

     glIndex updates the current (single-valued) color index.  It takes	one
     argument, the new value for the current color index.

     The current index is stored as a floating-point value. Integer values are
     converted directly	to floating-point values, with no special mapping.
     The initial value is 1.

     Index values outside the representable range of the color index buffer
     are not clamped.  However,	before an index	is dithered (if	enabled) and
     written to	the frame buffer, it is	converted to fixed-point format.  Any
     bits in the integer portion of the	resulting fixed-point value that do
     not correspond to bits in the frame buffer	are masked out.

NOTES    [Toc]    [Back]

     glIndexub and glIndexubv are available only if the	GL version is 1.1 or
     greater.

     The current index can be updated at any time.  In particular, glIndex can
     be	called between a call to glBegin and the corresponding call to glEnd.







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glIndex(3G)		       OpenGL Reference			   glIndex(3G)



ASSOCIATED GETS
     glGet with	argument GL_CURRENT_INDEX

SEE ALSO    [Toc]    [Back]

      
      
     glColor, glIndexPointer


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 Similar pages
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color IRIX sets the color index in the current draw mode
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