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特性
公共函数
保护函数
详细描述

QTechnique 类

封装技术。更多...

头：	#include <QTechnique>
qmake:	QT += 3drender
Since:	Qt 5.7
实例化：	Technique
继承：	Qt3DCore::QNode

所有成员列表，包括继承成员

特性

graphicsApiFilter : Qt3DRender::QGraphicsApiFilter * const

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

公共函数

	QTechnique (Qt3DCore::QNode * parent = nullptr)
void	addFilterKey (QFilterKey * filterKey )
void	addParameter (QParameter * 参数 )
void	addRenderPass (QRenderPass * pass )
QVector<QFilterKey *>	filterKeys () const
QGraphicsApiFilter *	graphicsApiFilter ()
QVector<QParameter *>	参数 () const
void	removeFilterKey (QFilterKey * filterKey )
void	removeParameter (QParameter * 参数 )
void	removeRenderPass (QRenderPass * pass )
QVector<QRenderPass *>	renderPasses () const

11 public functions inherited from Qt3DCore::QNode
32 公共函数继承自 QObject

保护函数

QTechnique (QTechniquePrivate & dd , Qt3DCore::QNode * parent = nullptr)

2 protected functions inherited from Qt3DCore::QNode
9 保护函数继承自 QObject

额外继承成员

3 公共槽继承自 Qt3DCore::QNode
1 公共槽继承自 QObject
4 信号继承自 Qt3DCore::QNode
2 信号继承自 QObject
11 静态公共成员继承自 QObject

详细描述

封装技术。

A Qt3DRender::QTechnique 指定一组 Qt3DRender::QRenderPass 对象， Qt3DRender::QFilterKey 对象， Qt3DRender::QParameter 对象和 Qt3DRender::QGraphicsApiFilter , which together define a rendering technique the given graphics API can render. The filter keys are used by Qt3DRender::QTechniqueFilter to select specific techniques at specific parts of the FrameGraph. If two QParameter instances with the same name are specified in a QTechnique 和 QRenderPass , the one in Technique overrides the one used in the QRenderPass .

When creating an QEffect that targets several versions of a graphics API, it is useful to create several QTechnique nodes each with a graphicsApiFilter set to match one of the targeted GL versions. At runtime, the Qt3D renderer will select the most appropriate QTechnique based on which graphics API versions are supported and (if specified) the QFilterKey nodes that satisfy a given QTechniqueFilter in the FrameGraph.

注意： When using OpenGL as the graphics API for rendering, Qt3D relies on the QSurfaceFormat 返回通过 QSurfaceFormat::defaultFormat () at runtime to decide what is the most appropriate GL version available. If you need to customize the QSurfaceFormat , do not forget to apply it with QSurfaceFormat::setDefaultFormat (). Setting the QSurfaceFormat on the view will likely have no effect on Qt3D related rendering.

QTechnique *gl3Technique = new QTechnique();
// Create the render passes
QRenderPass *firstPass = new QRenderPass();
QRenderPass *secondPass = new QRenderPass();
// Add the passes to the technique
gl3Technique->addRenderPass(firstPass);
gl3Technique->addRenderPass(secondPass);
// Set the targeted GL version for the technique
gl3Technique->graphicsApiFilter()->setApi(QGraphicsApiFilter::OpenGL);
gl3Technique->graphicsApiFilter()->setMajorVersion(3);
gl3Technique->graphicsApiFilter()->setMinorVersion(1);
gl3Technique->graphicsApiFilter()->setProfile(QGraphicsApiFilter::CoreProfile);
// Create a FilterKey
QFilterKey *filterKey = new QFilterKey();
filterKey->setName(QStringLiteral("name"));
fitlerKey->setValue(QStringLiteral("zFillPass"));
// Add the FilterKey to the Technique
gl3Technique->addFilterKey(filterKey);
// Create a QParameter
QParameter *colorParameter = new QParameter(QStringLiteral("color"), QColor::fromRgbF(0.0f, 0.0f, 1.0f, 1.0f));
// Add parameter to technique
gl3Technique->addParameter(colorParameter);

另请参阅 QEffect , QRenderPass ，和 QTechniqueFilter .

特性文档编制

graphicsApiFilter : Qt3DRender::QGraphicsApiFilter * const

Specifies the graphics API filter being used

访问函数：

QGraphicsApiFilter * graphicsApiFilter ()

成员函数文档编制

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

Default constructs an instance of QTechnique.

`[protected]` QTechnique:: QTechnique ( QTechniquePrivate & dd , Qt3DCore::QNode * parent = nullptr)

Copy constructor.

void QTechnique:: addFilterKey ( QFilterKey * filterKey )

Add filterKey 到 Qt3DRender::QTechnique local filter keys.

void QTechnique:: addParameter ( QParameter * 参数 )

Add 参数 to the technique's parameters.

void QTechnique:: addRenderPass ( QRenderPass * pass )

Appends a pass to the technique.

QVector < QFilterKey *> QTechnique:: filterKeys () const

Returns the list of Qt3DCore::QFilterKey key objects making up the filter keys of the Qt3DRender::QTechnique .

QVector < QParameter *> QTechnique:: 参数 () const

Returns a vector of the techniques current parameters

void QTechnique:: removeFilterKey ( QFilterKey * filterKey )

移除 filterKey 从 Qt3DRender::QTechnique local filter keys.

void QTechnique:: removeParameter ( QParameter * 参数 )

移除参数 from the technique's parameters.

void QTechnique:: removeRenderPass ( QRenderPass * pass )

Removes a pass from the technique.

QVector < QRenderPass *> QTechnique:: renderPasses () const

Returns the list of render passes contained in the technique.

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