QEffect Class

class Qt3DRender ::QEffect

The base class for effects in a Qt 3D scene. 更多...

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

该类在 Qt 5.7 引入。

所有成员列表，包括继承成员

公共函数

void	addParameter (Qt3DRender::QParameter * 参数 )
void	addTechnique (Qt3DRender::QTechnique * t )
QVector<Qt3DRender::QParameter *>	参数 () const
void	removeParameter (Qt3DRender::QParameter * 参数 )
void	removeTechnique (Qt3DRender::QTechnique * t )
QVector<Qt3DRender::QTechnique *>	techniques () const

详细描述

The QEffect class combines a set of techniques and parameters used by those techniques to produce a rendering effect for a material.

An QEffect instance should be shared among several QMaterial instances when possible.

注意： QEffect node can not be disabled.

QEffect *effect = new QEffect();
// Create technique, render pass and shader
QTechnique *gl3Technique = new QTechnique();
QRenderPass *gl3Pass = new QRenderPass();
QShaderProgram *glShader = new QShaderProgram();
// Set the shader on the render pass
gl3Pass->setShaderProgram(glShader);
// Add the pass to the technique
gl3Technique->addRenderPass(gl3Pass);
// 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);
// Add the technique to the effect
effect->addTechnique(gl3Technique);

A QParameter defined on a QEffect overrides parameter (of the same name) defined in QTechnique and QRenderPass , but are overridden by parameter in QRenderPassFilter , QTechniqueFilter and QMaterial .

另请参阅 QMaterial , QTechnique ，和 QParameter .

成员函数文档编制

void QEffect:: addParameter ( Qt3DRender::QParameter * 参数 )

添加参数 to the effect. It sends an update to the backend. The 参数 will be used to set a corresponding uniform value in the shader used by this effect.

void QEffect:: addTechnique ( Qt3DRender::QTechnique * t )

Adds a new technique t to the effect. It sends an update to the backend.

QVector < Qt3DRender::QParameter *> QEffect:: 参数 () const

Returns the list of parameters used by the effect.

void QEffect:: removeParameter ( Qt3DRender::QParameter * 参数 )

Removes a parameter 参数 from the effect.

void QEffect:: removeTechnique ( Qt3DRender::QTechnique * t )

Removes a technique t from the effect.

QVector < Qt3DRender::QTechnique *> QEffect:: techniques () const

Returns the list of techniques used by the effect.