Seems like patched
GliVd1vf.dll by Dege (Rayman 2\DLL) fixes FPS issues for both DX6 and Glide, and fixes disappearing objects for at least 16:9 due to low FOV in binaries from 1st post.
Please let me know if you encounter disappearing objects with other of these binaries than 16:9.
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I'm also attaching new binaries from Automaniak005, with bigger FOV. Along with new dedicated Cheat Engine values for fixing object disappearing which exist with them even while using GliVd1vf.dll patch.
Copy&Paste:
0000804000000040000000409A99993F
25:16 FOV - 1.346354166666666
16:10 FOV- 1.378666666666667
15:9 FOV - 1.401
16:9 FOV - 1.468
21:9 FOV - 1.795
32:9 FOV - 2.128
Tutorial:
25:16 files -
https://www68.zippyshare.com/v/An9QDDZM/file.html
16:10 files -
https://www56.zippyshare.com/v/id2vdeZy/file.html
15:9 files -
https://www56.zippyshare.com/v/Rcfg4w91/file.html
16:9 files -
https://www102.zippyshare.com/v/QDeEhl2l/file/html
21:9 files -
https://www56.zippyshare.com/v/S3nqLhh1/file.html
32:9 files -
https://www56.zippyshare.com/v/K9o2ECQ2/file.html
Currently, I'm leaving the old ones in the first post since dgVoodoo has a lot of problems with Alt+Tabing, so using Cheat Engine every game start is extremely uncomfortable.
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More technical info about binaries above and comparisons between different FOV in Rayman 2 by Automaniak005 himself:
This is how the game looks in 4: 3 (ignore the squeezed HUD, when creating this modification I forgot to back up Textures.cnt, and I did not want to pack again or search the Internet)
https://drive.google.com/file/d/1MJ4H8zOGsI9ussJuZRUEAqW34rbDHMp-/view_
This is what the game looks like after increasing the horizontal field of view, which RibShark sent me in 2015
https://drive.google.com/file/d/115U2g-kp_SUP-hEL7OfS-7rtWpfybN5y/view?usp=sharing
The method is used in the files from my 2017 video tutorial, but in addition, they use a customized value for resizing most of the game type.
This is what the game looks like on a file from 2019, when you don't increase the field of view in Cheat Engine (the same as in the first post)
https://drive.google.com/file/d/1lWAg000ga2vAa3xNtOi_yZnBBCu-uBMt/view?usp= sharing
Any object outside of the default 4: 3 area does not disappear (with library patch) because the area is not displayed at all (FOV is lower). Instead, you see less above and below. And in fact, this is not a 16:9 picture, but a bit narrower, stretched to 16:9, because increasing the CE field of view has little effect on proportions, thus increasing the 16:9 field of view would give a slightly flattened horizontal picture.
This is how the game looks on the file from 2019 after increasing the field of view in CE
https://drive.google.com/file/d/13b_yn2mr-nHDGATwfnhK8qW2n1Y5RZ7g/view?usp=sharing
At first glance, the image looks the same as when it was first modified (excluding the interface). However, this is due to the fact that in this shot no textures disappear despite the increase in the horizontal field of view. You can see that the visible area is slightly different between these two screenshots, because the method of changing the horizontal field of view uses a simple mathematical formula, while the values in the newer way, which relies on reducing the vertical field of view and improving the overall FOV in CE, had to be determined trial and error. Anyway, increasing the FOV in CE as opposed to changing the horizontal field of view in the file, adjusts the number of displayed elements to the visible area.