POSITION_CENTROID 1029 drivers/gpu/drm/radeon/evergreend.h #define		POSITION_CENTROID				(1<<9)
POSITION_CENTROID  454 drivers/gpu/drm/radeon/r600d.h #define		POSITION_CENTROID				(1<<9)
POSITION_CENTROID  533 drivers/gpu/drm/radeon/rv770d.h #define		POSITION_CENTROID				(1<<9)