Graphics Memory Reporting through WDDMJanuary 9, 2006 AbstractThis white paper provides information about the reporting of graphics memory through the Windows Vista Display Driver Model (WDDM) on systems running the Windows Vista operating system.The current version of this paper is maintained on the Web at: http://www.microsoft.com/whdc/device/display/graphicsmemory.mspxReferences and resources discussed here are listed at the end of this paper.ContentsIntroduction3Graphics Memory Concepts3Dedicated versus Shared Graphics Memory3Discrete versus Integrated Graphics Adapters3BIOS Allocation versus Driver Allocation5Graphics Memory Reporting before WDDM6Graphics Memory Reporting through WDDM6Calculation of Graphics Memory7Example 1: 256-MB Dedicated On-board Graphics Memory on a Desktop8Example 2: 32-MB Dedicated On-Board Graphics Memory on a Mobile PC10Example 3: 256-MB Shared Graphics Memory on a Mobile PC12Retrieving Graphics Memory Values on WDDM14Resources15DisclaimerThis is a preliminary document and may be changed substantially prior to final commercial release of the software described herein. The information contained in this document represents the current view of Microsoft Corporation on the issues discussed as of the date of publication. 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 ...
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