Does anyone know how default drivers work?

[1080]

If every manufacturer has different drivers, how are there default drivers that work with them. Is there a standard driver language that nVidia and AMD just improve upon in different ways, or do they provide drivers to Windows/Linux to include as default?

[KarathKasun]

15 minutes ago, 1080 said:

If every manufacturer has different drivers, how are there default drivers that work with them. Is there a standard driver language that nVidia and AMD just improve upon in different ways, or do they provide drivers to Windows/Linux to include as default?

No.  AMD/NV make the drivers.  The board manufacturers just put their branding on the AMD/NV drivers.

 

If you are talking about "generic" drivers, they work the same way the UEFI does.  All PC GPU's have a standard programming interface to do basic display output.  This interface does not include hardware acceleration, resulting in the CPU doing all of the calculations to draw whats on screen.  The result is that "generic" drivers are horribly slow.