Determines whether the application of a channel's table will have any effect.
HRESULT retVal = object.IsChannelIdentity(pSampleBools);
Pointer to a DXBASESAMPLE structure that tells whether a color's lookup table is enabled.
A TRUE or FALSE value is stored in each of the color components—alpha, red, green, and blue—of the returned structure. If a component has a return value of TRUE, that color is unaffected by a call to IDXLookupTable::ApplyTables.