- Qt 6.8
- Qt Quick 3D
- QML Types
- QtQuick3D.Effects
- HDRBloomTonemap
- Qt Quick 3D | Commercial or GPLv3

# HDRBloomTonemap QML Type

A bloom with tonemapping effect. More...

Import Statement: | `import QtQuick3D.Effects 6.8`
Status: | Deprecated since 6.5

This type is deprecated since QtQuick3D.Effects 6.5. We strongly advise against using it in new code.

- List of all members, including inherited members

## Properties

- bloomThreshold : real
- blurFalloff : real
- channelThreshold : real
- exposure : real
- gamma : real
- tonemappingLerp : real

## Detailed Description

Use ExtendedSceneEnvironment instead.

Warning: All pre-made standalone effects in QtQuick3D.Effects are considered deprecated starting with Qt 6.5. To apply glow and bloom to the scene, use ExtendedSceneEnvironment instead.

The HDRBloomTonemap effect provides two features:

- Adjusting the gamma and exposure of the high-dynamic range rendered content to achieve the image quality you want.
- Applying an adjustable bloom effect to bright areas (like the sun glinting off a car).

## Property Documentation

bloomThreshold : real

Sets the threshold for the bloom effect. Any part of the scene brighter than this value will bloom. A value of `1.0` corresponds to white. Lowering this value causes more areas of the rendered scene to bloom. At a value of `0.0` everything in the scene blooms. The range is `[0...1]`. The default value is `1`.

blurFalloff : real

Adjusts the amount of bloom. Lower values result in a stronger bloom effect, and higher values make the effect more subtle. The range is `[0...10]`. The default value is `0`.

channelThreshold : real

Specifies the white point for the image. There is usually no need to adjust this. The range is `[0...1]`. The default value is `1`.

exposure : real

Sets a linear multiplier on the lighting, brightening, or darkening the image overall. A value of `0.0` causes no adjustment to the image. The range is `[-9...9]`. The default value is `0`.

gamma : real

Affects the non-linear curve of the lighting. Higher values increase the exposure of mid tones, lightening the image and decreasing the contrast. A value of `1.0` causes no adjustment to the image. Sensible values are in the range `[0.1...4]`. The default value is `1`.

tonemappingLerp : real

Specifies the strength of the overall bloom effect. There is usually no need to adjust this. The range is `[0...1]`, with `0` being no blur and `1` being full bloom. The default value is `1`.