In addition, an Indirect Display driver IDD is a user-mode driver, which is simpler to develop than a kernel mode driver, and as a result contributes to increased overall system reliability. When connecting a USB display to a Windows platform or upgrading operating systems, the proper drivers will be downloaded and installed from Windows update. This mechanism of installing graphics drivers improves the resiliency of driver updates from Windows Update, eliminating driver file version mismatches resulting in system instabilities and user initiated reboots.
Each subsequent driver update will be run directly from its unique location in the driver store i. Feature implementation of driver store requires changes to the graphics driver INF file in order to ensure that the driver files get copied to the unique driver repository. Transition to DXIL delivers the following benefits to developers:. Programmability - Ease-of-development is improved and complexity of the shader creation process is reduced for developers by minimizing differences between GPU programming syntax and CPU languages that developers are familiar with.
Workflow Flexibility - DXIL enables developers to be in control of their own custom tools and optimization passes and choose which compilation steps are applied at build time versus runtime. With these features focusing on providing benefits for developers, end users will see the benefits in improved performance of new or updated games even when run on existing hardware.
This enables saving of captured frames to one memory location where multiple applications can read from, as opposed to copying the image data between processes and co-processes multiple times. This feature provides more efficient management of captured pictures across multiple processes, power savings, bandwidth reduction and latency reduction for WDDM 2.
The frame server allocates a captured image as cross-process shareable memory, and shares this memory out to processes requesting access. Since the frame server broadcasts the texture to multiple client processes, the texture must support concurrent reading. Currently NV12 textures are supported for this purpose.
Introduced in D3D12, Pipeline State Object PSO is an interface that represents the graphics pipeline instructions and resources aka state as a unified object to reduce mismatch between D3D and driver decompositions of the state.
Running graphically demanding applications and games requires creating a vast number of PSOs. This section describes feature improvements and Windows 8 Direct3D software and hardware requirements. The most notable change is in the feature score. This section describes all relevant INF requirements for Windows 8 graphics drivers.
The Windows 8 installation graphics driver behavior is designed to ensure that, whenever possible, our customers get a graphics driver that has been tested and certified for Windows 8.
This behavior is defined by the rules that are described in this section. With its introduction in Windows Vista, the WDDM architecture offered functionality to enable new features such as Desktop Composition, enhanced fault tolerance, video memory manager, GPU scheduler, cross process sharing of Direct3D surfaces, and so on.
Windows 7 made incremental changes to the driver model for supporting Windows 7 features and capabilities and was referred to as "WDDM 1. Small and Medium Business. Humans of IT. Green Tech. MVP Award Program.
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Note A new set of APIs is available starting with Windows 8 for duplicating the desktop for collaboration scenarios. Submit and view feedback for This product This page. View all page feedback. In this article. Video memory offer and reclaim. Optimized screen rotation support.
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