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 default value is zero.

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 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 called between a call to glBegin and the corresponding call to glEnd.

ASSOCIATED GETS

glGet with argument GL_INDEX_CLEAR_VALUE

glGet with argument GL_INDEX_BITS

SEE ALSO

"glClear"