D3D12_SO_DECLARATION_ENTRY structure (d3d12.h)

Describes a vertex element in a vertex buffer in an output slot.

Syntax

typedef struct D3D12_SO_DECLARATION_ENTRY {
  UINT   Stream;
  LPCSTR SemanticName;
  UINT   SemanticIndex;
  BYTE   StartComponent;
  BYTE   ComponentCount;
  BYTE   OutputSlot;
} D3D12_SO_DECLARATION_ENTRY;

Members

Stream

Zero-based, stream number.

SemanticName

Type of output element; possible values include: "POSITION", "NORMAL", or "TEXCOORD0". Note that if SemanticName is NULL then ComponentCount can be greater than 4 and the described entry will be a gap in the stream out where no data will be written.

SemanticIndex

Output element's zero-based index. Use, for example, if you have more than one texture coordinate stored in each vertex.

StartComponent

The component of the entry to begin writing out to. Valid values are 0 to 3. For example, if you only wish to output to the y and z components of a position, StartComponent is 1 and ComponentCount is 2.

ComponentCount

The number of components of the entry to write out to. Valid values are 1 to 4. For example, if you only wish to output to the y and z components of a position, StartComponent is 1 and ComponentCount is 2. Note that if SemanticName is NULL then ComponentCount can be greater than 4 and the described entry will be a gap in the stream out where no data will be written.

OutputSlot

The associated stream output buffer that is bound to the pipeline. The valid range for OutputSlot is 0 to 3.

Remarks

Specify an array of D3D12_SO_DECLARATION_ENTRY structures in the pSODeclaration member of a D3D12_STREAM_OUTPUT_DESC structure.

Requirements

See also

Core Structures