Kuesa::Qt3D::BloomEffect¶

Post-processing effect for blurring the bright parts of a scene. More...

#include <Kuesa/Qt3D/api/fx/bloomeffect.h>

Inherits from Kuesa::Qt3D::AbstractPostProcessingEffect, Qt3DCore::QNode

Public Slots¶

	Name
void	setThreshold(float threshold)
void	setBlurPassCount(int blurPassCount)

Public Signals¶

	Name
void	thresholdChanged(float threshold)
void	blurPassCountChanged(int blurPassCount)

Public Functions¶

	Name
	BloomEffect(Qt3DCore::QNode * parent =nullptr)
	~BloomEffect() override
virtual FrameGraphNodePtr	frameGraphSubTree() const override
virtual QVector< Qt3DRender::QLayer * >	layers() const override
virtual void	setWindowSize(const QSize & sceneSize) override
virtual void	setInputTexture(Qt3DRender::QAbstractTexture * texture) override
float	threshold() const
int	blurPassCount() const

Public Properties¶

	Name
float	threshold the brightness level determining which pixels the effect are applied to
int	blurPassCount the number of blur passes

Additional inherited members¶

Public Types inherited from Kuesa::Qt3D::AbstractPostProcessingEffect

	Name
enum	Type { Custom}
using QSharedPointer< Qt3DRender::QFrameGraphNode >	FrameGraphNodePtr

Public Functions inherited from Kuesa::Qt3D::AbstractPostProcessingEffect

	Name
	~AbstractPostProcessingEffect()
Type	type() const
virtual void	setDepthTexture(Qt3DRender::QAbstractTexture * texture)
virtual void	setCamera(Qt3DCore::QEntity * camera)

Protected Functions inherited from Kuesa::Qt3D::AbstractPostProcessingEffect

	Name
	AbstractPostProcessingEffect(Qt3DCore::QNode * parent =nullptr, Type type =Custom)

Protected Attributes inherited from Kuesa::Qt3D::AbstractPostProcessingEffect

	Name
const Type	m_type

Detailed Description¶

class Kuesa::Qt3D::BloomEffect;

Post-processing effect for blurring the bright parts of a scene.

Since: Kuesa 2.0

BloomEffect is a post-processing effect that applies a blur to the brightest parts of scene to simulate a fuzzy glow.

The effect can be configured to change the threshold defining the bright parts of the scene and the amount of blurring to apply.

The BloomEffect is a combination of the ThresholdEffect and the GaussianBlurEffect.

#include <Qt3DExtras/Qt3DWindow>
#include <ForwardRenderer>
#include <SceneEntity>
#include <BloomEffect>

Qt3DExtras::Qt3DWindow win;
Kuesa::Qt3D::SceneEntity *root = new Kuesa::Qt3D::SceneEntity();
Kuesa::Qt3D::ForwardRenderer *frameGraph = new Kuesa::Qt3D::ForwardRenderer();
Kuesa::Qt3D::BloomEffect *bloomEffect = new Kuesa::Qt3D::BloomEffect();

bloomEffect->setThreshold(0.5f);
bloomEffect->setBlurPassCount(2);

frameGraph->addPostProcessingEffect(bloomEffect);

win->setRootEntity(root);
win->setActiveFrameGraph(forwardRenderer);

...

Public Slots Documentation¶

slot setThreshold¶

void setThreshold(
    float threshold
)

See: BloomEffect::threshold

Sets the threshold value to threshold.

slot setBlurPassCount¶

void setBlurPassCount(
    int blurPassCount
)

See: BloomEffect::blurPassCount

Sets the number of blur passes to apply to blurPassCount.

Public Signals Documentation¶

signal thresholdChanged¶

void thresholdChanged(
    float threshold
)

signal blurPassCountChanged¶

void blurPassCountChanged(
    int blurPassCount
)

Public Functions Documentation¶

function BloomEffect¶

BloomEffect(
    Qt3DCore::QNode * parent =nullptr
)

function ~BloomEffect¶

~BloomEffect() override

function frameGraphSubTree¶

virtual FrameGraphNodePtr frameGraphSubTree() const override

See: Kuesa::Qt3D::AbstractPostProcessingEffect::frameGraphSubTree

Reimplements: Kuesa::Qt3D::AbstractPostProcessingEffect::frameGraphSubTree

Returns the frame graph subtree corresponding to the effect's implementation.

function layers¶

virtual QVector< Qt3DRender::QLayer * > layers() const override

Reimplements: Kuesa::Qt3D::AbstractPostProcessingEffect::layers

Return the layers provided by this effect. This will generally be the layer of a

function setWindowSize¶

virtual void setWindowSize(
    const QSize & sceneSize
) override

See: Kuesa::Qt3D::AbstractPostProcessingEffect::setSceneSize

Reimplements: Kuesa::Qt3D::AbstractPostProcessingEffect::setWindowSize

Sets the size of the rendered scene in pixels to size.

function setInputTexture¶

virtual void setInputTexture(
    Qt3DRender::QAbstractTexture * texture
) override

See: Kuesa::Qt3D::AbstractPostProcessingEffect::setInputTexture

Reimplements: Kuesa::Qt3D::AbstractPostProcessingEffect::setInputTexture

Sets the input texture for the effect to texture.

function threshold¶

float threshold() const

See: BloomEffect::setThreshold

Returns the threshold value.

function blurPassCount¶

int blurPassCount() const

See: BloomEffect::setBlurPassCount

Returns the number of blur passes to apply.

Public Property Documentation¶

property threshold¶

float threshold;

the brightness level determining which pixels the effect are applied to

See: ThresholdEffect::threshold

This value determines how bright something has to be for the bloom effect to be applied to it. Any pixels below the threshold are ignored.

property blurPassCount¶

int blurPassCount;

the number of blur passes

See: GaussianBlurEffect::blurPassCount

This is the number of times to apply the blur to the bright parts of the scene. More passes result in stronger blurring effect but take longer to render.

Updated on 2022-10-18 at 11:12:51 +0200