fglClearIndex(3G) OpenGL Reference fglClearIndex(3G)NAMEfglClearIndex - 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.
DESCRIPTIONfglClearIndex 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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