Thus, an application can incorporate a mesh created by another application into the scene it is rendering. WDDM allows Direct3D surfaces to be shared across processes. WDDM attempts to unify the experience across different vendors by controlling the execution of GPU tasks.Ĭross-process sharing of Direct3D surfaces Ī Direct3D graphics surface is the memory area that contains information about the textured meshes used for rendering a 2D or 3D scene.
#Sidplay 2.6 driver
It is important to note that scheduling is not a new concept but it was previously the responsibility of individual driver developers. A hybrid scheduling algorithm between native and light threads with cooperation between the threads would achieve seamless parallelism. This differs from native threads on the CPU where one task cannot be interrupted and therefore can take longer than necessary and make the computer appear less responsive. Each list of commands is put in a queue for execution by the GPU, and it can be preempted by the runtime if a more critical task arrives and if it has not begun execution.
The runtime handles scheduling of concurrent graphics contexts. Virtualization could be supported on previous driver models (such as the XP Driver Model) to some extent, but was the responsibility of the driver, instead of being handled at the runtime level. When the swapped out data is needed, it is fetched back. 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.
#Sidplay 2.6 drivers
WDDM drivers allow video memory to be virtualized, and video data to be paged out of video memory into system RAM. In the context of graphics, virtualization means that individual processes (in user mode) cannot see the memory of adjacent processes even by means of insertion of forged commands in the command stream. WDDM drivers enable new areas of functionality which were not uniformly provided by earlier display driver models.
#Sidplay 2.6 windows 7
Display drivers in Windows Vista and Windows 7 can choose to either adhere to WDDM or to XDDM. It is a replacement for the previous Windows 2000 and Windows XP display driver model XDDM/XPDM and is aimed at enabling better performance graphics and new graphics functionality and stability. Windows Display Driver Model ( WDDM) is the graphic driver architecture for video card drivers running Microsoft Windows versions beginning with Windows Vista.
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