Post Process Feature

intermediate concepts

Volumetric Lights 2 (Built-in) · Core Concepts

Volumetric Lights Post Process

The Volumetric Lights Post Process component attaches to the camera and provides global settings that affect all volumetric lights in the scene. It improves both image quality and performance through downscaling and blur passes.

Setup

  1. Select any Volumetric Light in the scene and click Show Global Settings in its inspector.
  2. Unity will prompt you to create the Volumetric Lights Post Process component on the camera. Click Yes.
  3. Alternatively, manually add the component: select your Camera and click Add Component > Volumetric Lights Post Process.

Parameters

ParameterDescriptionDefault
Render Before TransparentForces the volumetric effect to render before other transparent objects in the scene.Off
DownscalingReduces the resolution of the volumetric effect buffer. 1 = full resolution, 2 = half, etc. Significant performance improvement on GPU-bound scenes.1
Blur PassesNumber of Gaussian blur passes applied to the volumetric effect. Reduces noise and banding at the cost of sharpness.0
Blur DownscalingReduces the resolution of blur buffers for faster blur processing.1
Blur SpreadKernel size of the blur. Larger values produce softer results.1.0
HDRUses HDR format for blur buffers. Enable when volumetric lights use very bright colors that would otherwise clip.Off
Preserve EdgesEnables a bilateral filter when blending the blurred effect onto the scene. Keeps geometry edges crisp at a slight performance cost.Off
Blend ModeHow the final effect composites onto the scene image.Additive
BrightnessGlobal brightness multiplier applied to all volumetric lights in the scene.1.0
Dither StrengthReduces banding in volumetric lights that use very dark, smooth settings.0

Post Process component inspector

Recommended workflow: Start with Downscaling = 2 and Blur Passes = 2, then adjust. This typically gives the best balance between quality and performance.
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