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 with2m−1, wherem 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