- Qt 5.15
- Qt Quick 3D
- QML Types
- HDRBloomTonemap QML Type
- Qt Quick 3D | Commercial or GPLv3

# HDRBloomTonemap QML Type

A bloom with tonemapping effect. More...

Import Statement: | import QtQuick3D.Effects 1.15

- List of all members, including inherited members

## Properties

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

## Detailed Description

The HDRBloomTonemap effect provides two features:

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

## Property Documentation

bloomThreshold : real

Lighting greater than this value blooms. A value of `1.0` corresponds to white in the original render result. Lowering this value causes more areas of the rendered scene to bloom. At a value of `0.0` everything in the scene blooms. Range is `[0...1]`. `1` by default.

blurFalloff : real

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

channelThreshold : real

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

exposure : real

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

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]`. `1` by default.

tonemappingLerp : real

Strength of the overall bloom effect. There is usually no need to adjust this. Range is `[0...1]`, with `0` being no blur and `1` being full bloom. `1` by default.