Expose and generalize Clear11's CompareStates function, and add methods for equality test and initialization.
TRAC #23841
Signed-off-by: Geoff Lang
Signed-off-by: Shannon Woods
Refactored the ClearParameters type and moved Renderer11's clear logic into a Clear11 helper class.
TRAC #23475
Author: Geoff Lang
Signed-off-by: Jamie Madill
Signed-off-by: Shannon Woods