>>320511614
A 3d scan with photogrammetry will turn out lumpy no matter how good a job you do, so if you want full photorealism you'll have to do some custom modeling. If you have specific things in your room that you want in high detail like art or sculptures, you can (2d or 3d) scan them individually and compose them back together in unity. Common objects like keyboards or monitors you can find off the shelf models for as well, better than you could scan.