// d3d12umddi.h

typedef enum D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAGS_0083_0 {
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_NONE = 0x0,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_GENERAL_SUPPORT_OK = 0x1,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_RECONFIGURATION_AVAILABLE = 0x2,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RESOLUTION_RECONFIGURATION_AVAILABLE = 0x4,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_VBV_SIZE_CONFIG_AVAILABLE = 0x8,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_FRAME_ANALYSIS_AVAILABLE = 0x10,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RECONSTRUCTED_FRAMES_REQUIRE_TEXTURE_ARRAYS = 0x20,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_DELTA_QP_AVAILABLE = 0x40,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_SUBREGION_LAYOUT_RECONFIGURATION_AVAILABLE = 0x80,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_ADJUSTABLE_QP_RANGE_AVAILABLE = 0x100,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_INITIAL_QP_AVAILABLE = 0x200,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_MAX_FRAME_SIZE_AVAILABLE = 0x400,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_SEQUENCE_GOP_RECONFIGURATION_AVAILABLE = 0x800,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_MOTION_ESTIMATION_PRECISION_MODE_LIMIT_AVAILABLE = ,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0096_RATE_CONTROL_EXTENSION1_SUPPORT = 0x2000,
  D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0096_RATE_CONTROL_QUALITY_VS_SPEED_AVAILABLE = 0x4000
} ;
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Windows Driver Kit DDI reference (ne-d3d12umddi-d3d12ddi_video_encoder_support_flags_0083_0)

Description

The D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAGS_0083_0 enumeration is a bit-wise OR of flags that report the capabilities and features that a video encoder supports for a given configuration.

Constants

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_NONE:0x0`

No flags are set (indicates no support).

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_GENERAL_SUPPORT_OK:0x1`

Indicates whether the given configuration is generally supported by the encoder, in combination with the remaining flags to convey certain limitations or no general support. The D3D12 Debug layer can provide further information.

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_RECONFIGURATION_AVAILABLE:0x2`

Indicates support for changing the rate control in the middle of the encoding session.

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RESOLUTION_RECONFIGURATION_AVAILABLE:0x4`

Indicates support for changing the resolution in the middle of the encoding session.

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_VBV_SIZE_CONFIG_AVAILABLE:0x8`

When set, enables configuring the video buffering verifier (VBV) initial fullness and capacity for rate control algorithms.

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_FRAME_ANALYSIS_AVAILABLE:0x10`

Indicates support for rate control modes that involve frame analysis to optimize the bitrate usage at the cost of slower performance.

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RECONSTRUCTED_FRAMES_REQUIRE_TEXTURE_ARRAYS:0x20`

When set, textures that refer reconstructed pictures can only be referenced as a texture array, as opposed to an array of separate texture 2D resources with each resource having array size of 1. When this capability is not required, there is more flexibility for the host. This is important for scenarios where the resolution changes frequently and the decoded picture buffer (DPB) needs to be flushed for an instantaneous decoder refresh (IDR) frame, because a texture array can only be allocated and deallocated as a single unit, but separate texture 2D resources can be allocated and deallocated individually.

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_DELTA_QP_AVAILABLE:0x40`

Indicates support for delta quantization parameter (QP) usage in rate control.

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_SUBREGION_LAYOUT_RECONFIGURATION_AVAILABLE:0x80`

Indicates support for dynamic subregion layout changes during an encoding session.

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_ADJUSTABLE_QP_RANGE_AVAILABLE:0x100`

Indicates support for adjustable QP range in rate control.

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_INITIAL_QP_AVAILABLE:0x200`

Indicates support for adjustable initial QP in rate control.

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_RATE_CONTROL_MAX_FRAME_SIZE_AVAILABLE:0x400`

Indicates support for setting a maximum cap in the bitrate algorithm per each encoded frame.

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_SEQUENCE_GOP_RECONFIGURATION_AVAILABLE:0x800`

Indicates support for dynamic group of pictures (GOP) changes during an encoding session.

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_MOTION_ESTIMATION_PRECISION_MODE_LIMIT_AVAILABLE::0x1000`

If the driver sets this bit, the user can limit the precision used for motion search on frame encode.

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0096_RATE_CONTROL_EXTENSION1_SUPPORT:0x2000`

When enabled, indicates the use of D3D12_VIDEO_ENCODER_RATE_CONTROL_FLAG_ENABLE_EXTENSION1_SUPPORT is available. Available starting with Windows 11, version 24H2 (WDDM 3.2).

`D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0096_RATE_CONTROL_QUALITY_VS_SPEED_AVAILABLE:0x4000`

Requires D3D12_VIDEO_ENCODER_SUPPORT_FLAG_RATE_CONTROL_EXTENSION1_SUPPORT. When enabled, indicates the use of D3D12_VIDEO_ENCODER_RATE_CONTROL_FLAG_ENABLE_QUALITY_VS_SPEED is available. Available starting with Windows 11, version 24H2 (WDDM 3.2).

Remarks

When set, D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAG_0083_0_GENERAL_SUPPORT_OK indicates general support, which is defined as follows:

There is support to allocate all buffers with D3D12_MEMORY_POOL_L0. This is always system memory, but still a D3D12 buffer.
There is support to allocate all buffers with D3D12_MEMORY_POOL_L1, the default pool, including those allocated with D3D12DDI_CPU_PAGE_PROPERTY_NOT_AVAILABLE.

The rest of the flags are combined to convey further information.

See D3D12 video encoding for general information.

D3D12DDI_VIDEO_ENCODER_SUPPORT_FLAGS_0083_0 - NtDoc