glclearindex
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glClearIndex(3G) OpenGL Reference 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 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 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
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