[kendo65]

Originally Posted by Jumo211

Isn't in that video the older OpenGL game engine which they later on
scrapped in favor of DirectX ?
I believe the switch from already OpenGL steady progress to DirectX
proved to be much more difficult than anticipated .
Pretty smooth video play there going on

You are right on this. Initial development in COD was done using Open GL. I remember Luthier / Oleg confirming the change to Direct X very late in development, and probably a considerable time after it had already happened.

I think we'll never know either the reasons for the change or what the effect was in terms of lost development time and disruption.

(though I don't think that the video shown is actually using the Open GL version of the game. It is visible though on the giveaway DVD that came with il-2 1946. All I'll say, to indulge a past bugbear of mine (! ) is 'HEDGEROWS' )