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Unable to get DxgkDdiRecommendFunctionalVidPn call in windows 7

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krish

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Nov 12, 2009, 7:11:09 AM11/12/09
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I am trying to add an initial vidpn topology by implementing the
DxgkDdiRecommendFunctionalVidPn call in the WDDM miniport driver.

But starting from windows 7 i am unable to get the
DxgkDdiRecommendFunctionalVidPn function call from dxgkrnl.After
searching through the MSDN documentation i found out that the function
is deprecated starting from windows 7.

msdn link: http://msdn.microsoft.com/en-us/library/ee220395.aspx

According to msdn

"On a computer running Windows 7, the display mode manager (DMM)
determines an appropriate VidPN topology to apply using VidPN history
data in the CCD database. DMM no longer determines the VidPN topology
based upon the last known good topology as it did in Windows Vista.
Consequently, on Windows 7 DMM never calls the
DxgkDdiRecommendVidPnTopology function."

If so then how to provide initial vidpn topology?
else how to add the vidpn topology in CCD persistent data base from
which the DMM determines the functional vidpn?

Please help me in this regard.

Thanks & Regards,
Krish.

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