MirOS Manual: glClearIndex(3)


GLCLEARINDEX(3G)    UNIX Programmer's Manual     GLCLEARINDEX(3G)

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 con-
     verted 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 2m-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 exe-
     cuted 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(3G)

MirOS BSD #10-current  Printed 03.04.2017                       1

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