Diligent::DrawMeshIndirectAttribs Struct Reference

Defines the mesh indirect draw command attributes. More...

#include <DeviceContext.h>

Public Member Functions
constexpr	DrawMeshIndirectAttribs () noexcept
	Initializes the structure members with default values.
constexpr	DrawMeshIndirectAttribs (IBuffer *_pAttribsBuffer, DRAW_FLAGS _Flags, Uint32 _CommandCount, Uint64 _DrawArgsOffset=DrawMeshIndirectAttribs{}.DrawArgsOffset, RESOURCE_STATE_TRANSITION_MODE _AttribsBufferStateTransitionMode=DrawMeshIndirectAttribs{}.AttribsBufferStateTransitionMode, IBuffer *_pCounterBuffer=DrawMeshIndirectAttribs{}.pCounterBuffer, Uint64 _CounterOffset=DrawMeshIndirectAttribs{}.CounterOffset, RESOURCE_STATE_TRANSITION_MODE _CounterBufferStateTransitionMode=DrawMeshIndirectAttribs{}.CounterBufferStateTransitionMode) noexcept
	Initializes the structure members with user-specified values.

Public Attributes
IBuffer *	pAttribsBuffer = nullptr
Uint64	DrawArgsOffset = 0
	Offset from the beginning of the attribs buffer to the location of the draw command attributes.
DRAW_FLAGS	Flags = DRAW_FLAG_NONE
	Additional flags, see Diligent::DRAW_FLAGS.
Uint32	CommandCount = 1
RESOURCE_STATE_TRANSITION_MODE	AttribsBufferStateTransitionMode = RESOURCE_STATE_TRANSITION_MODE_NONE
	State transition mode for indirect draw arguments buffer.
IBuffer *	pCounterBuffer = nullptr
	A pointer to the optional buffer, from which Uint32 value with the draw count will be read.
Uint64	CounterOffset = 0
	When pCounterBuffer is not null, an offset from the beginning of the buffer to the location of the command counter.
RESOURCE_STATE_TRANSITION_MODE	CounterBufferStateTransitionMode = RESOURCE_STATE_TRANSITION_MODE_NONE
	When pCounterBuffer is not null, state transition mode for the count buffer.

Detailed Description

Defines the mesh indirect draw command attributes.

This structure is used by IDeviceContext::DrawMeshIndirect().

Member Data Documentation

CommandCount

Uint32 Diligent::DrawMeshIndirectAttribs::CommandCount = 1

When pCounterBuffer is null, the number of commands to run. When pCounterBuffer is not null, the maximum number of commands that will be read from the count buffer.

pAttribsBuffer

IBuffer* Diligent::DrawMeshIndirectAttribs::pAttribsBuffer = nullptr

A pointer to the buffer, from which indirect draw attributes will be read. The buffer must contain the following arguments at the specified offset:

Direct3D12:

 Uint32 ThreadGroupCountX;
 Uint32 ThreadGroupCountY;
 Uint32 ThreadGroupCountZ;

Vulkan:

 Uint32 TaskCount;
 Uint32 FirstTask;

Size of the buffer must be sizeof(Uint32[3]) * Attribs.MaxDrawCommands.