restore texture group selection functionality
Squashed 'app/images/depth/' content from commit 529a330

git-subtree-dir: app/images/depth
git-subtree-split: 529a3304d123fb6b247df5ee564ea3663beda799
Merge commit 'e428d17ec27b3db1a63cc9e68e62a017e9e88803' as 'app/images/depth'