QForwardRenderer Class

(Qt3DExtras::QForwardRenderer)

The QForwardRenderer provides a default FrameGraph implementation of a forward renderer. 更多...

头文件: #include <QForwardRenderer>
qmake: QT += 3dextras
开始支持版本: Qt 5.7
Instantiated By: ForwardRenderer
基类: Qt3DRender::QTechniqueFilter

属性

公有函数

QForwardRenderer(Qt3DCore::QNode *parent = nullptr)
~QForwardRenderer()
Qt3DCore::QEntity *camera() const
QColor clearColor() const
QSize externalRenderTargetSize() const
float gamma() const
bool isFrustumCullingEnabled() const
QObject *surface() const
QRectF viewportRect() const

公有槽函数

void setCamera(Qt3DCore::QEntity *camera)
void setClearColor(const QColor &clearColor)
void setExternalRenderTargetSize(const QSize &size)
void setFrustumCullingEnabled(bool enabled)
void setGamma(float gamma)
void setSurface(QObject *surface)
void setViewportRect(const QRectF &viewportRect)

信号

void cameraChanged(Qt3DCore::QEntity *camera)
void clearColorChanged(const QColor &clearColor)
void externalRenderTargetSizeChanged(const QSize &size)
void frustumCullingEnabledChanged(bool enabled)
void gammaChanged(float gamma)
void surfaceChanged(QObject *surface)
void viewportRectChanged(const QRectF &viewportRect)

其他继承的成员

详细描述

The QForwardRenderer provides a default FrameGraph implementation of a forward renderer.

Forward rendering is what OpenGL traditionally uses. It renders directly to the backbuffer one object at a time shading each one as it goes.

QForwardRenderer is a single leaf FrameGraph tree which contains a Qt3DRender::QViewport, a Qt3DRender::QCameraSelector, and a Qt3DRender::QClearBuffers. The QForwardRenderer has a default requirement filter key whose name is "renderingStyle" and value "forward". If you need to filter out your techniques, you should do so based on that filter key.

By default the viewport occupies the whole screen and the clear color is white. Frustum culling is also enabled.

属性

camera : Qt3DCore::QEntity *

Holds the current camera entity used to render the scene.

Note: A camera is a QEntity that has a QCameraLens as one of its components.

访问函数:

Qt3DCore::QEntity *camera() const
void setCamera(Qt3DCore::QEntity *camera)

Notifier signal:

void cameraChanged(Qt3DCore::QEntity *camera)

clearColor : QColor

Holds the current clear color of the scene. The frame buffer is initialized to the clear color before rendering.

访问函数:

QColor clearColor() const
void setClearColor(const QColor &clearColor)

Notifier signal:

void clearColorChanged(const QColor &clearColor)

externalRenderTargetSize : QSize

访问函数:

QSize externalRenderTargetSize() const
void setExternalRenderTargetSize(const QSize &size)

Notifier signal:

void externalRenderTargetSizeChanged(const QSize &size)

frustumCulling : bool

Indicates if the renderer applies frustum culling to the scene.

访问函数:

bool isFrustumCullingEnabled() const
void setFrustumCullingEnabled(bool enabled)

Notifier signal:

void frustumCullingEnabledChanged(bool enabled)

gamma : float

Holds the gamma value the renderer applies to the scene.

访问函数:

float gamma() const
void setGamma(float gamma)

Notifier signal:

void gammaChanged(float gamma)

surface : QObject *

Holds the current render surface.

访问函数:

QObject *surface() const
void setSurface(QObject *surface)

Notifier signal:

void surfaceChanged(QObject *surface)

viewportRect : QRectF

Holds the current normalized viewport rectangle.

访问函数:

QRectF viewportRect() const
void setViewportRect(const QRectF &viewportRect)

Notifier signal:

void viewportRectChanged(const QRectF &viewportRect)

成员函数

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

Default constructs an instance of QForwardRenderer.

QForwardRenderer::~QForwardRenderer()

Destroys the instance of QForwardRenderer.