D3DKMDT_GRAPHICS_PREEMPTION_GRANULARITY - NtDoc
Native API online documentation, based on the System Informer
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headers
// d3dkmdt.h
typedef enum _D3DKMDT_GRAPHICS_PREEMPTION_GRANULARITY {
D3DKMDT_GRAPHICS_PREEMPTION_NONE,
D3DKMDT_GRAPHICS_PREEMPTION_DMA_BUFFER_BOUNDARY,
D3DKMDT_GRAPHICS_PREEMPTION_PRIMITIVE_BOUNDARY,
D3DKMDT_GRAPHICS_PREEMPTION_TRIANGLE_BOUNDARY,
D3DKMDT_GRAPHICS_PREEMPTION_PIXEL_BOUNDARY,
D3DKMDT_GRAPHICS_PREEMPTION_SHADER_BOUNDARY
} D3DKMDT_GRAPHICS_PREEMPTION_GRANULARITY;
View the official Windows Driver Kit DDI referenceNo description available.
Specifies the capabilities for the preemption of graphic processing unit (GPU) graphics operations that the display miniport driver supports.
D3DKMDT_GRAPHICS_PREEMPTION_NONEThe driver does not support the preemption of GPU graphics operations.
Note This value also specifies that the driver cannot stop currently running DMA buffers of a specified type and cannot prevent all pending DMA buffers in the hardware queue from running.
D3DKMDT_GRAPHICS_PREEMPTION_DMA_BUFFER_BOUNDARYThe driver cannot stop currently running DMA buffers of a specified type but can prevent all pending DMA buffers in the hardware queue from running.
D3DKMDT_GRAPHICS_PREEMPTION_PRIMITIVE_BOUNDARYThe driver cannot stop currently running primitive buffers of a specified type but can prevent all pending primitive buffers in the hardware queue from running.
D3DKMDT_GRAPHICS_PREEMPTION_TRIANGLE_BOUNDARYThe driver cannot stop currently running triangle buffers of a specified type but can prevent all pending triangle buffers in the hardware queue from running.
D3DKMDT_GRAPHICS_PREEMPTION_PIXEL_BOUNDARYThe driver cannot stop currently running pixel buffers of a specified type but can prevent all pending pixel buffers in the hardware queue from running.
D3DKMDT_GRAPHICS_PREEMPTION_SHADER_BOUNDARYThe driver cannot stop currently running shader instruction buffers of a specified type but can prevent all pending shader instruction buffers in the hardware queue from running.
Starting with Windows 8, display miniport drivers need to specify the level of preemption granularity supported by the GPU when executing graphics operations. Because engines on the same adapter may potentially support different preemption levels, the driver should report the coarsest granularity among all engines capable of executing a particular type of graphics request.
For example, if one engine supports the preemption of primitive level graphics requests, and another engine supports the preemption of triangle level graphics requests, the driver should report a capability of D3DKMDT_GRAPHICS_PREEMPTION_PRIMITIVE_BOUNDARY for the adapter.
D3DKMDT_COMPUTE_PREEMPTION_GRANULARITY