d3d DLL and texture compression

[roothorick]

This one caught my curiosity and I'd like to know details if possible.

Doesn't Factorio use OpenGL for rendering on all platforms? Doesn't the GL host handle texture compression for you (i.e. specify compressed internal format to glTexImage)? What does d3dx9.dll have to do with anything? What happens on Linux and OSX?

[Koub]

It uses OpenGL OR D3D, depending on the system.

[Loewchen]

On windows d3d is default, as there are less issues with, but you can change that manually in the settings file.