Bloom Component

The Bloom component creates bloom, a post-processing effect that simulates real-world light bleeding, or glow.

Provider

Atom Gem

Dependencies

PostFX Layer component

Properties

Bloom component interface

Bloom properties

PropertyDescriptionValueDefault
Enable BloomIf enabled, activates the bloom effect.BooleanDisabled
Overrides - Enabled OverrideIf enabled, all Bloom component properties will be set to the values specified in the Overrides property group.BooleanEnabled
ThresholdBloom effect applies only to pixels with a brightness value greater than this threshold.Float: 0.0 to Infinity1.0
KneeCreates a gradual transition between the pixels below and above the threshold. This softens and spreads the bloom effect.Float: 0.0 - 1.00.5
IntensityScales the intensity of the bloom effect.Float: 0.0 - 10000.00.5
Enable BicubicIf enabled, applies bicubic filtering. This can help reduce undesired artifacts that may appear.BooleanDisabled
Kernel Size ScaleScales the size of the kernel.Float: 0.0 - 2.01.0
Kernel Size 0 to 4Smooths the kernel size by a percentage of the render target’s width. For example, a kernel size of 0.04 translates to a 4-by-4 kernel on a 100-by-100 pixel image and a 40-by-40 kernel on a 1000-by-1000 pixel image. Larger values causes more scattering at a higher cost of computation. The maximum kernel size is 128.Float: 0.0 - 1.0Kernel Size
  • 0: 0.04
  • 1: 0.08
  • 2: 0.16
  • 3: 0.32
  • 4: 0.64
Tint 0 to 4Adds a color tint to each bloom stage. Bloom stages are additively blended to produce the final result.Vector3: 0 - 255X: 255. Y: 255, Z: 255

Copyright © 2026 DawnEngine. All rights reserved.

DawnEngine is a commercial 3D engine distributed under the DawnEngine end-user license agreement. Engine binaries and source are proprietary and are not covered by the licenses below.

Documentation only: the prose and templates on this site are a derivative work of Open 3D Engine (O3DE) documentation by the O3DE Contributors, used under CC BY 4.0 (documentation content), Apache 2.0 (site code), and the MIT license (inline code samples).

The open-source 3D engine that DawnEngine is built on top of is Open 3D Engine . DawnEngine is not affiliated with, endorsed by, or sponsored by The Linux Foundation or the O3DE project. “O3DE” and “Open 3D Engine” are trademarks of The Linux Foundation.