I have tested it.
5.7 sky box algorithm is wrong.
6.0B6's sky box algorithm is correct.
But 5.7 can support 16K sky box Texture.（17430X4322 pixel）
6.0B6 can only support 8K sky box Texture.
8K's sky box is not clear enough.Need to support 16K
https://overpic.net/viewer.php?file=x2c6aem43yv1zifyu2p.png
5.7 sky box algorithm is wrong.
https://overpic.net/viewer.php?file=xy4ad7ef4exdygqzm85wn.png
6.0B6's sky box algorithm is correct.
https://overpic.net/viewer.php?file=xee7jyye2ba21y635.png
6.0B6 Do not support 16K sky box Texture.
https://overpic.net/viewer.php?file=xytp4ekdkit6kyenk4pd.png
Partial panorama
