Diligent::DrawAttribs Struct Reference

Defines the draw command attributes. More...

Public Member Functions
	DrawAttribs ()
	Initializes the structure members with default values. More...

Public Attributes
PRIMITIVE_TOPOLOGY	Topology
	Input primitive topology, see Diligent::PRIMITIVE_TOPOLOGY.
VALUE_TYPE	IndexType
	For an indexed draw call, type of elements in the index buffer. Allowed values: VT_UINT16 and VT_UINT32. Ignored if DrawAttribs::IsIndexed is False.
Bool	IsIndexed
	Indicates if index buffer will be used to index input vertices.
Uint32	NumInstances
	Number of instances to draw. If more than one instance is specified, instanced draw call will be performed.
Bool	IsIndirect
	Indicates if indirect draw call will be performed. If set to True, pIndirectDrawAttribs must contain valid pointer to the buffer, from which draw attributes will be read.
Uint32	BaseVertex
	For indexed rendering, a constant which is added to each index before accessing the vertex buffer.
Uint32	IndirectDrawArgsOffset
	For indirect rendering, offset from the beginning of the buffer to the location of draw command attributes. Ignored if DrawAttribs::IsIndirect is False.
Uint32	FirstInstanceLocation
	For instanced rendering, LOCATION (or INDEX, but NOT the byte offset) in the vertex buffer to start reading instance data from.
IBuffer *	pIndirectDrawAttribs
	For indirect rendering, pointer to the buffer, from which draw attributes will be read. Ignored if DrawAttribs::IsIndirect is False.
Uint32	NumVertices
	For a non-indexed draw call, number of vertices to draw.
Uint32	NumIndices
	For an indexed draw call, number of indices to draw.
Uint32	StartVertexLocation
	For non-indexed rendering, LOCATION (or INDEX, but NOT the byte offset) of the first vertex in the vertex buffer to start reading vertices from.
Uint32	FirstIndexLocation
	For indexed rendering, LOCATION (NOT the byte offset) of the first index in the index buffer to start reading indices from.

Detailed Description

Defines the draw command attributes.

This structure is used by IRenderDevice::Draw()

Constructor & Destructor Documentation

Diligent::DrawAttribs::DrawAttribs ( )

inline

Initializes the structure members with default values.

Default values:

Member	Default value
Topology	PRIMITIVE_TOPOLOGY_UNDEFINED
NumVertices	0
IndexType	VT_UNDEFINED
IsIndexed	False
NumInstances	1
IsIndirect	False
BaseVertex	0
IndirectDrawArgsOffset	0
StartVertexLocation	0
FirstInstanceLocation	0
pIndirectDrawAttribs	nullptr