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 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 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