id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
1238	Mismatch between Spec and VTM for deriving sliceWidthInTiles[ i + j ]  (6.5.1)	shih-ta.hsiang		"In 6.5.1, if( sliceWidthInTiles[ i ]  = =  1  &&  sliceHeightInTiles[ i ]  = =  1 ) and NumSlicesInTile[ i ] > 1, tileIdx  +=  sliceWidthInTiles[ i ] involves an undefined value for sliceWidthInTiles[ i ] after setting i  +=  NumSlicesInTile[ i ] − 1.
In VTM-9.3, if( sliceWidthInTiles[ i ]  = =  1  &&  sliceHeightInTiles[ i ]  = =  1 ), both sliceWidthInTiles[ i + j ] and sliceHeightInTiles[ i + j ] are set equal to 1 for each j = 0 .. NumSlicesInTile[ i ] - 1
Recommned to align Spec with VTM as follows:

for( j = 0; j < NumSlicesInTile[ i ]; j++ ) {
  AddCtbsToSlice( i + j, tileColBd[ tileX ], tileColBd[ tileX + 1 ], ctbY, ctbY + sliceHeightInCtus[ i + j ] )
  ctbY  +=  sliceHeightInCtus[ i + j ]
  ''sliceWidthInTiles[ i + j ]  =  1''
  ''sliceHeightInTiles[ i + j ]  =  1''
}"	defect	closed	minor		spec	VVC D10 vE	fixed		ksuehring bbross XiangLi fbossen jvet@…