hifi's ddraw.dll is what we've been using for years now to propel Carma95.
It turns out FunkyFr3sh is still working on it and improving compatibility to work with Command & Conquer (while keeping an eye on Carmageddon).
https://github.com/CnCNet/cnc-ddraw

Releases can be downloaded there: https://github.com/CnCNet/cnc-ddraw/releases

Just for the record and in case someone wants to try them out, here are a couple of other recent DDraw wrappers:

DDrawCompat, https://github.com/narzoul/DDrawCompat
Runs very well, but no configuration possible, so no windowed mode.
(latest 'experimental' release is more up to date than its release date might indicate)

DxWrapper, https://github.com/elishacloud/dxwrapper
Runs nicely too, again no windows mode without an external aid like DxWnd (included in the bundle)
Settings.ini must be renamed to ddraw.ini and DDrawCompat set to 0 within it.

Latest cnc-ddraw (see first above) has a problem with the mouse in Carmageddon.

FunkyFr3sh just did an update to fix the mouse and Alt+Tab in Carma95!

https://github.com/CnCNet/cnc-ddraw/rel ... ag/1.1.6.0

FunkyFr3sh is still working on cnc-ddraw and it's getting better and better.
He released version 1.2 some days ago: https://github.com/CnCNet/cnc-ddraw/releases

Be sure to use the ddraw.ini file specifically made for Carmageddon as the additional line in there (sleep=33) makes all the difference. In my experience it fixed long time flickering issue. This release introduces a direct3d renderer.

More progress from FunkyFr3sh, especially making cnc-ddraw work again with Carmageddon 2 software!
However IIRC, direct3d might not like Carma95+multithreading too much. So stay in OpenGL.
https://github.com/CnCNet/cnc-ddraw/releases