D3D12_FEATURE_DATA_VIDEO_PROCESSOR_SIZE structure (d3d12video.h)

Describes the allocation size of a video decoder heap.

Syntax

typedef struct D3D12_FEATURE_DATA_VIDEO_PROCESSOR_SIZE {
  UINT                                         NodeMask;
  const D3D12_VIDEO_PROCESS_OUTPUT_STREAM_DESC *pOutputStreamDesc;
  UINT                                         NumInputStreamDescs;
  const D3D12_VIDEO_PROCESS_INPUT_STREAM_DESC  *pInputStreamDescs;
  UINT64                                       MemoryPoolL0Size;
  UINT64                                       MemoryPoolL1Size;
} D3D12_FEATURE_DATA_VIDEO_PROCESSOR_SIZE;

Members

NodeMask

For single GPU operation, set this to zero. If there are multiple GPU nodes, set a bit to identify the node (the device's physical adapter) to which the command queue applies. Each bit in the mask corresponds to a single node. Only 1 bit may be set.

pOutputStreamDesc

A pointer to a D3D12_VIDEO_PROCESS_OUTPUT_STREAM_DESC(ns-d3d12video-d3d12_video_process_output_stream_desc) structure describing the output stream.

NumInputStreamDescs

The number of input streams provided in the pInputStreamDescs parameter.

pInputStreamDescs

A pointer to a list of D3D12_VIDEO_PROCESS_INPUT_STREAM_DESC(ns-d3d12video-d3d12_video_process_input_stream_desc) structures the input streams.

MemoryPoolL0Size

The allocation size of the video processor in the L0 memory pool. L0 is the physical system memory pool. When the adapter is discrete/NUMA, this pool has greater bandwidth for the CPU and less bandwidth for the GPU. When the adapter is UMA, this pool is the only one which is valid. For more information, see Residency.

MemoryPoolL1Size

The allocation size of the video processor in the L1 memory pool. L1 is typically known as the physical video memory pool. L1 is only available when the adapter is discrete/NUMA, and has greater bandwidth for the GPU and cannot even be accessed by the CPU. When the adapter is UMA, this pool is not available. For more information, see Residency.

Requirements

Requirement	Value
Minimum supported client	Windows 10 Build 20348
Minimum supported server	Windows 10 Build 20348
Header	d3d12video.h

See also

Residency