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. For example, when running a game after the first time or after rebooting the PC, content will be loaded from the physical library as saved PSOs.
Provided with the execution time of each event, developers can further optimize their code and investigate inefficiencies and other performance issues. The goal of the feature is to provide enough information to reconstruct the exact order and duration of operations executed by the GPU, so that tools can visualize parallelism and pipelining with an engine, measure GPU workloads, and identify potential synchronization issues.
Developers program the graphics pipeline by creating shaders in high-level shader language HLSL , which are then compiled to an intermediate language for the GPU driver. The driver runs additional compilations and optimizations to convert this code to GPU-specific instructions which remained opaque to the developers.
With this feature, developers are presented readable GPU-specific code to evaluate the extent of their shader optimization and speed. Microsoft Business. Microsoft Enterprise. Browse All Community Hubs. Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Showing results for. Show only Search instead for.
Did you mean:. Sign In. New Contributor. Hi, I'm new here. Let me explain. Best regards J. Hi You helped me a lot. It is now clear to me that I need to buy a new GC. The driver must implement all the mandatory features to claim itself as a "WDDM 1. A non-WDDM 1. This table summarizes the WDDM 1. To read details about each feature, follow the link in the left column. However, WDDM 1. A new set of APIs is available starting with Windows 8 for duplicating the desktop for collaboration scenarios.
For more details, see Desktop duplication. See the Kernel mode display-only miniport driver sample. System Firmware Table Interface : Lets the display miniport driver enumerate and read the system firmware table.
WDDM 1. Since the desktop and application windows managed by DWM are Direct3D applications, the number of open windows directly affects the amount of video memory required. Because there is no limit on the number of open windows, the video memory available may prove insufficient, necessitating virtualization. As the window contents that DWM composes into the final desktop are generated by different processes, cross-process surface sharing is necessary.
Though this is true for Microsoft's implementation of a composited desktop under Windows Vista, on the other hand, a composited desktop need not theoretically require a new display driver model to work as expected. The approach Microsoft attempted was to try to make sure WDDM was a unified experience across different GPUs from multiple vendors by standardizing their features and performance. The software features missing from other driver models could be made immaterial by extensions or if a less restrictive or simply different driver model was in place.
Hybrid Sleep, which combines hibernation and sleep mode functionality for enhanced stability in the event of power failure, also requires WDDM. New features include: [10].
DXGI 1. Windows 8 includes WDDM 1. Other major features include preemptive multitasking of the GPU with finer granularity DMA buffer, primitive, triangle, pixel, or instruction-level , [29] reduced memory footprint, improved resource sharing, and faster timeout detection and recovery. Windows 8. Driver feature additions include wireless displays Miracast , YUV format ranges, cross-adapter resources and GPU engine enumeration capabilities. Graphics kernel performance improvements. Windows 10 includes WDDM 2.
The new API will do away with automatic resource-management and pipeline-management tasks and allow developers to take full low-level control of adapter memory and rendering states.
The display driver model from Windows 8. A new memory model is implemented that gives each GPU a per-process virtual address space. Direct addressing of video memory is still supported by WDDMv2 for graphics hardware that requires it, but that is considered a legacy case. IHVs are expected to develop new hardware that supports virtual addressing. Significant changes have been made to the DDI to enable this new memory model. The following is a list of new features for Windows Display driver development in Windows 10, version [48] :.
Since the introduction of Windows 10 April Update, and due to changes in the WDDM, it became possible to use the same dual graphics in laptops.
It can also act as a solution to the problem if there is no VGA video output on the video card, and it is present on the motherboard.
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