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With shared video memory, an application must constantly check that it is only writing to memory that belongs to that application. When running a high-bandwidth video application such as a movie player or some games, the computing power and complexity needed to perform constant clipping and checking negatively impacts performance and compatibility.
Includes enhanced support for Non-Uniform Memory Access (NUMA) and systems with large memory pages. Windows Vista also exposes APIs for accessing the NUMA features. Memory pages can be marked as read-only, to prevent data corruption. New address mapping scheme called Rotate Virtual Address Descriptors (VAD). It is used for the advanced Video ...
Windows Vista: Windows Vista — Video for Windows: Multimedia framework API Windows 3.1: Windows 95: DirectShow: Windows Address Book: List of contacts that can be shared by multiple apps Contact manager Internet Explorer 3: Windows XP: Windows Contacts, People, or Windows Live Mail: Windows Desktop Gadgets: Widget engine for Microsoft Gadgets ...
The Windows Vista version can use only the Enhanced Video Renderer (EVR). Support for live scrubbing or live seeking, that is, the ability to show the video frame after seeking with the mouse or after clicking with the mouse while paused is not available in the version of Windows Media Player 11 in Windows Vista and later but is supported in ...
WDDM drivers allow video memory to be virtualized, [6] and video data to be paged out of video memory into system RAM. In case the video memory available turns out to be insufficient to store all the video data and textures, currently unused data is moved out to system RAM or to the disk. When the swapped out data is needed, it is fetched back.
Windows Vista Basic has video card requirements similar to Windows XP, and it is the default visual style of Windows Vista Starter and on systems without support for Windows Aero. Before Windows Vista SP1, machines that failed Windows Genuine Advantage product license validation would also revert to this visual style.
Starting from Windows 7, Canonical Display Driver no longer renders to the system memory copy when a WDDM 1.1/DXGI 1.1 compliant video driver is present. For applications using DirectX to write to a 3D surface, the DirectX implementation in Windows Vista uses WDDM to share the surface with DWM. DWM then uses the surface directly and maps it ...
By default, the necessary files are loaded into main memory, but using a feature called ReadyBoost, Windows Vista and Windows 7 can use alternative storage such as USB flash drives, thereby freeing up main memory. Although hard disks may have higher sequential data transfer rates, flash drives can be faster for small files or non-sequential I/O ...