Defines the indirect draw command attributes. More...

#include <DeviceContext.h>

Public Member Functions
constexpr	DrawIndirectAttribs () noexcept
	Initializes the structure members with default values.

constexpr	DrawIndirectAttribs (IBuffer _pAttribsBuffer, DRAW_FLAGS _Flags, Uint32 _DrawCount=DrawIndirectAttribs{}.DrawCount, Uint64 _DrawArgsOffset=DrawIndirectAttribs{}.DrawArgsOffset, Uint32 _DrawArgsStride=DrawIndirectAttribs{}.DrawArgsStride, RESOURCE_STATE_TRANSITION_MODE _AttribsBufferTransitionMode=DrawIndirectAttribs{}.AttribsBufferStateTransitionMode, IBuffer _pCounterBuffer=DrawIndirectAttribs{}.pCounterBuffer, Uint64 _CounterOffset=DrawIndirectAttribs{}.CounterOffset, RESOURCE_STATE_TRANSITION_MODE _CounterBufferTransitionMode=DrawIndirectAttribs{}.CounterBufferStateTransitionMode) noexcept
	Initializes the structure members with user-specified values.

Public Attributes
IBuffer *	pAttribsBuffer = nullptr
	A pointer to the buffer, from which indirect draw attributes will be read.

Uint64	DrawArgsOffset = 0
	Offset from the beginning of the buffer to the location of draw command attributes.

DRAW_FLAGS	Flags = DRAW_FLAG_NONE
	Additional flags, see Diligent::DRAW_FLAGS.

Uint32	DrawCount = 1

Uint32	DrawArgsStride = 16

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

RESOURCE_STATE_TRANSITION_MODE	CounterBufferStateTransitionMode = RESOURCE_STATE_TRANSITION_MODE_NONE
	When counter buffer is not null, state transition mode for the count buffer.

Detailed Description

Defines the indirect draw command attributes.

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

Member Data Documentation

◆ CounterOffset

Uint64 Diligent::DrawIndirectAttribs::CounterOffset = 0

When pCounterBuffer is not null, an offset from the beginning of the buffer to the location of the command counter.

◆ DrawArgsStride

Uint32 Diligent::DrawIndirectAttribs::DrawArgsStride = 16

When DrawCount > 1, the byte stride between successive sets of draw parameters. Must be a multiple of 4 and greater than or equal to 16 bytes (sizeof(Uint32) * 4).

◆ DrawCount

Uint32 Diligent::DrawIndirectAttribs::DrawCount = 1

The number of draw commands to execute. When the pCounterBuffer is not null, this member defines the maximum number of commands that will be executed. Must be less than DrawCommandProperties::MaxDrawIndirectCount.

◆ pAttribsBuffer

IBuffer* Diligent::DrawIndirectAttribs::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:

Uint32 NumVertices;
Uint32 NumInstances;
Uint32 StartVertexLocation;
Uint32 FirstInstanceLocation;