Enables or disables logical operation based on
enable
and specifies a mode,
GL_CLEAR
,
GL_SET
,
GL_COPY
,
GL_COPY_INVERTED
,
GL_NOOP
,
GL_INVERT
,
GL_AND
,
GL_NAND
,
GL_OR
,
GL_NOR
,
GL_XOR
,
GL_EQUIV
,
GL_AND_REVERSE
,
GL_AND_INVERTED
,
GL_OR_REVERSE
, or
GL_OR_INVERTED
.