row1PosX = (UGAWidth + TILE_XSPACING - (ROW1_TILESIZE + TILE_XSPACING) * row1Count) >> 1;
row1PosY = row0PosY + ROW0_TILESIZE + TILE_YSPACING;
if (row1Count > 0)
row1PosX = (UGAWidth + TILE_XSPACING - (ROW1_TILESIZE + TILE_XSPACING) * row1Count) >> 1;
row1PosY = row0PosY + ROW0_TILESIZE + TILE_YSPACING;
if (row1Count > 0)