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Am 2015-08-10 um 20:41 schrieb Aaryaman Vasishta:
> I've written device QI tests (quick look:
> http://pastebin.com/5bpRizmr need to remove the last boolean flag
> column as it's unnecessary now) and you can query up-down across
> all versions.
The follow-up question is: What happens if you create an
IDirect3DRMDevice via CreateDeviceFromD3D, QI IDirect3DRMDevice2 or 3
from it and then call GetDirect3DDevice2. In plain ddraw you can't get
a device2 from a device1, so I'd expect the d3drm call to fail in some
way.

I suspect your way to use QueryInterface in GetDirect3DDevice2 already
implements the right behavior. Please add a test for this somewhere.

I think testing this with a d3drm device that was created via
CreateDeviceFromClipper should work too. Your
IDirect3DDevice::QueryInterface(&IID_IDirectDrawSurface) call in the
version 1 test to get the render target shows that the device was
created as a v1 device.

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