D3D12_VIDEO_ENCODER_HEAP_DESC1 structure (d3d12video.h)

Describes an ID3D12VideoEncoderHeap1. Extends D3D12_VIDEO_ENCODER_HEAP_DESC with a power-of-two downscale factor for lower resolution frame analysis.

Syntax

typedef struct D3D12_VIDEO_ENCODER_HEAP_DESC1 {
  UINT                                              NodeMask;
  D3D12_VIDEO_ENCODER_HEAP_FLAGS                    Flags;
  D3D12_VIDEO_ENCODER_CODEC                         EncodeCodec;
  D3D12_VIDEO_ENCODER_PROFILE_DESC                  EncodeProfile;
  D3D12_VIDEO_ENCODER_LEVEL_SETTING                 EncodeLevel;
  UINT                                              ResolutionsListCount;
  const D3D12_VIDEO_ENCODER_PICTURE_RESOLUTION_DESC *pResolutionList;
  UINT                                              Pow2DownscaleFactor;
} D3D12_VIDEO_ENCODER_HEAP_DESC1;

Members

NodeMask

The node mask specifying the physical adapter on which the video processor will be used. For single GPU operation, set this to zero. If there are multiple GPU nodes, set a bit to identify the node, i.e. 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.

Flags

A bitwise or combination of values from the D3D12_VIDEO_ENCODER_HEAP_FLAGS enumeration specifying encoder heap creation options.

EncodeCodec

A D3D12_VIDEO_ENCODER_CODEC specifying the codec of the associated encoder object.

EncodeProfile

A D3D12_VIDEO_ENCODER_PROFILE_DESC specifying the profile for the selected codec in the associated encoder object.

EncodeLevel

A D3D12_VIDEO_ENCODER_LEVEL_SETTING specifying the level for the selected codec in the associated encoder object.

ResolutionsListCount

The count of resolutions requested to be supported present in the pResolutionList field.

pResolutionList

Pointer to an array of D3D12_VIDEO_ENCODER_PICTURE_RESOLUTION_DESC specifying the list of resolutions requested to be supported.

Pow2DownscaleFactor

When D3D12_VIDEO_ENCODER_HEAP_FLAG_ALLOW_RATE_CONTROL_FRAME_ANALYSIS is set, indicates to the driver the downscaling factor for the 1st pass. The downscaled dimensions are calculated as InputWidth / 2^Pow2DownscaleFactor and InputHeight / 2^Pow2DownscaleFactor. When Pow2DownscaleFactor is 0 and the flag is set, the 1st pass is performed at full resolution.

Remarks

If D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RESOLUTION_RECONFIGURATION_AVAILABLE is supported, Pow2DownscaleFactor applies to all possible resolutions that can be dynamically switched between or used with this ID3D12VideoEncoderHeap1, listed in pResolutionList. When dynamically switching between resolutions, the 1st pass lower resolution is also adjusted accordingly.

Requirements

See also

D3D12_VIDEO_ENCODER_HEAP_DESC

ID3D12VideoEncoderHeap1