内容

• 特性
• 公共函数
• 公共槽
• 信号
• 详细描述

QComputeCommand Class

( Qt3DRender::QComputeCommand )

QComponent to issue work for the compute shader on GPU 更多...

头：	#include <QComputeCommand>
qmake:	QT += 3drender
Since:	Qt 5.7
实例化：	ComputeCommand
继承：	Qt3DCore::QComponent

• 所有成员列表，包括继承成员

特性

• workGroupX : int
• workGroupY : int
• workGroupZ : int

• 1 特性继承自 Qt3DCore::QComponent
• 3 特性继承自 Qt3DCore::QNode
• 1 特性继承自 QObject

公共函数

	QComputeCommand (Qt3DCore::QNode * parent = nullptr)
int	workGroupX () const
int	workGroupY () const
int	workGroupZ () const

• 2 公共函数继承自 Qt3DCore::QComponent
• 11 公共函数继承自 Qt3DCore::QNode
• 32 公共函数继承自 QObject

公共槽

void	setWorkGroupX (int workGroupX )
void	setWorkGroupY (int workGroupY )
void	setWorkGroupZ (int workGroupZ )

• 1 公共槽继承自 Qt3DCore::QComponent
• 3 公共槽继承自 Qt3DCore::QNode
• 1 公共槽继承自 QObject

信号

void	workGroupXChanged ()
void	workGroupYChanged ()
void	workGroupZChanged ()

• 3 信号继承自 Qt3DCore::QComponent
• 4 信号继承自 Qt3DCore::QNode
• 2 信号继承自 QObject

额外继承成员

• 11 静态公共成员继承自 QObject
• 2 保护函数继承自 Qt3DCore::QNode
• 9 保护函数继承自 QObject

详细描述

QComponent to issue work for the compute shader on GPU

A Qt3DRender::QComputeCommand is used to issue work for the compute shader. The compute shader is specified in the QMaterial component of the same entity the QComputeCommand is added to. The workGroupX , workGroupY and workGroupZ properties specify the work group sizes for the compute shader invocation. Qt3DRender::QDispatchCompute node needs to be present in the FrameGraph to actually issue the commands.

注意： If the rendering policy is set to Qt3DRender::QRenderSettings::OnDemand and there are no changes to the scene, the ComputeCommand will not be invoked repeatedly. The Qt3DRender::QRenderSettings::Always render policy must be set for the ComputeCommand to be repeatedly invoked if there are no other changes to the scene that triggers rendering a new frame.

特性文档编制

workGroupX : int

Specifies X workgroup size.

访问函数：

int	workGroupX () const
void	setWorkGroupX (int workGroupX )

通知程序信号：

void	workGroupXChanged ()

workGroupY : int

Specifies Y workgroup size.

访问函数：

int	workGroupY () const
void	setWorkGroupY (int workGroupY )

通知程序信号：

void	workGroupYChanged ()

workGroupZ : int

Specifies Z workgroup size.

访问函数：

int	workGroupZ () const
void	setWorkGroupZ (int workGroupZ )

通知程序信号：

void	workGroupZChanged ()

成员函数文档编制

QComputeCommand:: QComputeCommand ( Qt3DCore::QNode * parent = nullptr)

The constructor creates a new Qt3DRender::QComputeCommand instance with the specified parent .

[slot] void QComputeCommand:: setWorkGroupX ( int workGroupX )

Sets the workgroup for the first dimension to workGroupX .

注意： Setter 函数对于特性 workGroupX .

另请参阅 workGroupX ().

[slot] void QComputeCommand:: setWorkGroupY ( int workGroupY )

Sets the workgroup for the second dimension to workGroupY .

注意： Setter 函数对于特性 workGroupY .

另请参阅 workGroupY ().

[slot] void QComputeCommand:: setWorkGroupZ ( int workGroupZ )

Sets the workgroup for the third dimension to workGroupZ .

注意： Setter 函数对于特性 workGroupZ .

另请参阅 workGroupZ ().