// umdprovider.h

typedef enum _UMDETW_ALLOCATION_SEMANTIC {
  UMDETW_ALLOCATION_SEMANTIC_NONE,
  UMDETW_ALLOCATION_SEMANTIC_DMA_BUFFER,
  UMDETW_ALLOCATION_SEMANTIC_UPLOAD_STAGING,
  UMDETW_ALLOCATION_SEMANTIC_DOWNLOAD_STAGING,
  UMDETW_ALLOCATION_SEMANTIC_CONTEXT_SAVE,
  UMDETW_ALLOCATION_SEMANTIC_DRIVER_OTHER_MIN,
  UMDETW_ALLOCATION_SEMANTIC_DRIVER_OTHER_MAX
} UMDETW_ALLOCATION_SEMANTIC;
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Windows Driver Kit DDI reference (ne-umdprovider-_umdetw_allocation_semantic)

_UMDETW_ALLOCATION_SEMANTIC enumeration

Description

Indicates what a memory allocation is used for if the allocation is internal to the user-mode driver.

Constants

`UMDETW_ALLOCATION_SEMANTIC_NONE`

The allocation is created for a Direct3D resource.

`UMDETW_ALLOCATION_SEMANTIC_DMA_BUFFER`

The allocation is used as a DMA buffer.

`UMDETW_ALLOCATION_SEMANTIC_UPLOAD_STAGING`

The allocation is used as a staging allocation to upload and download data to and from video memory.

`UMDETW_ALLOCATION_SEMANTIC_DOWNLOAD_STAGING`

The allocation is used exclusively as a staging allocation to download data from video memory.

`UMDETW_ALLOCATION_SEMANTIC_CONTEXT_SAVE`

The allocation is used as a GPU context save area.

`UMDETW_ALLOCATION_SEMANTIC_DRIVER_OTHER_MIN`

The driver can use this semantic value for its own internal purposes.

`UMDETW_ALLOCATION_SEMANTIC_DRIVER_OTHER_MAX`