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 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()

COPYRIGHT

Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.

AUTHORS

opengl.org