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D3D12_VIDEO_ENCODER_PICTURE_CONTROL_SUBREGIONS_LAYOUT_DATA_SLICES structure (d3d12video.h)

  • Article

Defines subregions as slices for codecs that support this partitioning mode.

Syntax

typedef struct D3D12_VIDEO_ENCODER_PICTURE_CONTROL_SUBREGIONS_LAYOUT_DATA_SLICES {
  union {
    UINT MaxBytesPerSlice;
    UINT NumberOfCodingUnitsPerSlice;
    UINT NumberOfRowsPerSlice;
    UINT NumberOfSlicesPerFrame;
  };
} D3D12_VIDEO_ENCODER_PICTURE_CONTROL_SUBREGIONS_LAYOUT_DATA_SLICES;

Members

MaxBytesPerSlice

The maximum number of bytes per slice to be used. This field is used exclusively with D3D12_VIDEO_ENCODER_FRAME_SUBREGION_LAYOUT_MODE_BYTES_PER_SUBREGION.

NumberOfCodingUnitsPerSlice

The number of squared blocks to be used per slice. The size in pixels of the squared regions can be calculated using the current resolution and D3D12_FEATURE_DATA_VIDEO_ENCODER_RESOLUTION_SUPPORT_LIMITS.SubregionBlockPixelsSize for the current frame resolution. This field is used exclusively with D3D12_VIDEO_ENCODER_FRAME_SUBREGION_LAYOUT_MODE_SQUARE_UNITS_PER_SUBREGION_ROW_UNALIGNED.

NumberOfRowsPerSlice

The number of squared blocks rows per slice for the frame to be divided into. The size in pixels of the squared regions can be calculated using the current resolution and D3D12_FEATURE_DATA_VIDEO_ENCODER_RESOLUTION_SUPPORT_LIMITS.SubregionBlockPixelsSize for the current frame resolution. This field is used exclusively with D3D12_VIDEO_ENCODER_FRAME_SUBREGION_LAYOUT_MODE_UNIFORM_PARTITIONING_ROWS_PER_SUBREGION.

NumberOfSlicesPerFrame

The number of slices to divide the frame into. This field is used exclusively with D3D12_VIDEO_ENCODER_FRAME_SUBREGION_LAYOUT_MODE_UNIFORM_PARTITIONING_SUBREGIONS_PER_FRAME.

Remarks

For modes that imply a fixed number of slices, the number of slices selected must be less than indicated by D3D12_FEATURE_DATA_VIDEO_ENCODER_RESOLUTION_SUPPORT_LIMITS.MaxSubregionsNumber and the selected resolution.

Requirements

Requirement Value
Minimum supported client Windows Build 22000
Minimum supported server Windows Build 22000
Header d3d12video.h