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Migrating From XDDM to WDDM

HW-665C. Migrating From XDDM to WDDM. Roger Coote - Senior Development Akshay Agrawal - Senior Program Manager Microsoft Corporation. Talking points. Migrating a XDDM driver to WDDM display-only d river Create a WDDM render-only Driver from a full WDDM driver

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Migrating From XDDM to WDDM

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  1. HW-665C Migrating From XDDM to WDDM Roger Coote -Senior Development Akshay Agrawal - Senior Program Manager Microsoft Corporation

  2. Talking points • Migrating a XDDM driver to WDDM display-only driver • Create a WDDM render-only Driver from a full WDDM driver • Migrating a mirror driver based collaboration app to using Desktop Duplication API • Other related topics

  3. Display-only driver - under the hood Driver Installation Windows Display-only driver Device Start Query for display connectivity state Report displays and EDID Process mouse pointer data* Render frame and place in system memory Mouse pointer data Process frame data* Provide rich meta data for frame Dirty region, screen to screen move Scan out physically or virtually * Hardware acceleration possible

  4. Render-only driver – Under the hood • Specify zero source and targets in DxgkDdiStartDevice • Set NumberOfVideoPresentSources and NumberOfChildren = 0 • Either implement • All the required full WDDM driver DDI’s • Only the render-only WDDM driver DDI’s

  5. Desktop Duplication API – under the hood Windows App Acknowledge duplication Selects monitor(s) to duplicate Process Mouse pointer data* Render frame and place in DX surface Mouse pointer data Process frame data* Provide rich meta data for frame Dirty region, screen to screen move Process data for transmission* Transmit * Hardware acceleration possible

  6. Q&A

  7. thank you Feedback and questions http://forums.dev.windows.com Session feedbackhttp://bldw.in/SessionFeedback

  8. © 2011 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

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