glClearIndex(3G)	       OpenGL Reference		      glClearIndex(3G)

NAME    [Toc]    [Back]

     glClearIndex - specify the	clear value for	the color index	buffers

C SPECIFICATION    [Toc]    [Back]

     void glClearIndex(	GLfloat	c )

PARAMETERS    [Toc]    [Back]

     c	Specifies the index used when the color	index buffers are cleared.
	The initial value is 0.

DESCRIPTION    [Toc]    [Back]

     glClearIndex specifies the	index used by glClear to clear the color index
     buffers.  c is not	clamped.  Rather, c is converted to a fixed-point
     value with	unspecified precision to the right of the binary point.	 The
						     m
     integer part of this value	is then	masked with 2 -1, where	m is the
     number of bits in a color index stored in the frame buffer.

ERRORS    [Toc]    [Back]

     GL_INVALID_OPERATION is generated if glClearIndex is executed between the
     execution of glBegin and the corresponding	execution of glEnd.

ASSOCIATED GETS    [Toc]    [Back]

     glGet with	argument GL_INDEX_CLEAR_VALUE
     glGet with	argument GL_INDEX_BITS

SEE ALSO    [Toc]    [Back]

     glClear


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