d3d	d3d:simple	ogl	ogl:simple	gld	gld:simple
DirectX	DirectDraw	✔¹	✔¹	✔¹	✔¹	✔¹	✔¹
	Direct3D Hardware	✔	✔	✘	✘	✘	✘
	Direct3D Software*	✔	✔	✘	✘	✘	✘
	Direct3D Wrapper**	✘²	✔	✘	✘	✘	✘
OpenGL	ICD	✘	✘	✔	✔	✘	✘
	MCD	✘	✘	✔	✔	✘	✘
	Generic Sofware	✘	✘	✔	✔	✘	✘
	Software Emulation***	✘	✘	✔	✔	✘	✘
	Wrapper**	✘	✘	✘²	✔	✘	✘
3Dfx	OpenGL ICD****	✘	✘	✔	✔	✔	✔
	MiniGL / QuakeGL****	✘	✘	✔	✔	✔	✔
	WickedGL****	✘	✘	✔	✔	✔	✔
	MesaFX****	✘	✘	✔	✔	✔	✔
	Glide	✘	✘	✘	✘	✔	✔
	Glide Wrapper**	✘	✘	✘	✘	✘²	✔
	Direct3D	✔	✔	✘	✘	✘	✘
* Software emulation with SwiftShader, WARP or REF.
** Wrappers use OpenGL, Direct3D or Glide for emulation.
*** Software emulation with SwiftShader or Mesa3d.
**** All OpenGL implementations for 3Dfx use Glide API.
¹ Windowed 3D applications always use DirectDraw.
² Due to great diversity of various wrappers, the only reliable detect method is 'simple'.