fglClearIndex man page on IRIX

fglClearIndex man page on IRIX

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fglClearIndex(3G)	       OpenGL Reference		     fglClearIndex(3G)

NAME
     fglClearIndex - specify the clear value for the color index buffers

FORTRAN SPECIFICATION
     SUBROUTINE fglClearIndex( REAL*4 c )

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

DESCRIPTION
     fglClearIndex specifies the index used by fglClear 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.
							 m
     The 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
     GL_INVALID_OPERATION is generated if fglClearIndex is executed between
     the execution of fglBegin and the corresponding execution of fglEnd.

ASSOCIATED GETS
     fglGet with argument GL_INDEX_CLEAR_VALUE
     fglGet with argument GL_INDEX_BITS

SEE ALSO
     fglClear

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