I guess OP need some context to understand what "alpha" means for ED and how it is different from other games.
First of all, it must be taken into mind that due of short first version development version, FD develop things in parallel. Alpha currently has graphics engine capable to running bare minimum of the game. It was tweaked specially for this purpose. This is whole reason also why it runs on so many systems - because main reason of this alpha is to test *core gameplay concepts*. While alpha testing is going on, rendering team is working on improvements.
Remember, this is not some off-the-shelf engine. They do all stuff in-house.
First of all, it must be taken into mind that due of short first version development version, FD develop things in parallel. Alpha currently has graphics engine capable to running bare minimum of the game. It was tweaked specially for this purpose. This is whole reason also why it runs on so many systems - because main reason of this alpha is to test *core gameplay concepts*. While alpha testing is going on, rendering team is working on improvements.
Remember, this is not some off-the-shelf engine. They do all stuff in-house.
