http://www.mobygames.com/game/space-invaders/techinfo
dgvoodoo is for glide, it says on that site that this works via direct3d only
i take it, that your system is far superior to the minimum spec?

Far, far superior. I should note that it worked fine under Windows 7 - but I also had a different GPU (Radeon 7870 then, GTX 970 + Win10 now) so that might not mean a whole lot.
I was under the impression that dgVoodoo had different binaries for DirectX.

dgVoodoo2 supports up to DirectX 8, although it's still not perfect.
You can find it in the PC Emulation sub-forum here in Vogons.

Space Invaders uses DX6.1, AFAIK. Problem is, putting the dgVoodoo DLLs into its directory does absolutely nothing...unless I've done it wrong, of course. Am I right in thinking you just drop the three DLLs and the setup EXE into the same folder as the game's EXE file?

Phlum wrote:

Space Invaders uses DX6.1, AFAIK. Problem is, putting the dgVoodoo DLLs into its directory does absolutely nothing...unless I've done it wrong, of course. Am I right in thinking you just drop the three DLLs and the setup EXE into the same folder as the game's EXE file?

Yes, but you are doing something wrong as it should work. Can you take a screenshot of the game's directory?

https://i.imgur.com/J9K39Qi.png

(I made that ISO myself, by the way - runs the same if I put in the disc vs. using the ISO.)

That should work. Does dgVoodoo2 work with other games for you? If not

You have changed system DLL load order (like KnownDLLs). Go to "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\KnownDLLs" in registry and check if ddraw.dll is on list, if is - delete it. (KnownDLLs are not searched ie. system always will use a system one, not bundled with app).

check that

make sure to run the config program and enable watermark on the directx tab so you know for sure if it's running dgvoodoo2 or not.

ARGH! I'm a muppet. I found out what was wrong - looking through the settings I found "passthrough to real DirectX" checked. Silly me!

Thanks for your help, anyway, hopefully someone else will find it useful.

Side note, though, there is a horizontal line across the game. (image) I'm guessing that's to do with running the game at a much higher framerate to what it's supposed to. Can I get rid of it?