DragonFly On-Line Manual Pages

GLCLEARINDEX()                                                  GLCLEARINDEX()

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

C SPECIFICATION
       void glClearIndex( GLfloat c )

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

DESCRIPTION
       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 integer part of this value is then masked with 2^m - 1,
       where m is the number of bits in a color index stored in the frame
       buffer.

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

ASSOCIATED GETS
       glGet with argument GL_INDEX_CLEAR_VALUE
       glGet with argument GL_INDEX_BITS

SEE ALSO
       glClear

                                                                GLCLEARINDEX()