31 lines
2.0 KiB
Markdown
31 lines
2.0 KiB
Markdown
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# Upgrading HDRP from 2023.1 to 2023.2
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In the High Definition Render Pipeline (HDRP), some features work differently between major versions. This document helps you upgrade HDRP from 15.x to 16.x.
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## Adaptive Probe Volume
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HDRP version 16 uses Probe Volumes for light probe systems by default.
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## LOD dithering
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HDRP 16 deprecates the `supportDitheringCrossFade` setting in the HDRP Asset. Instead, use the Quality Settings property `enableLODCrossFade`.
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When you upgrade to 2023.2 HDRP automatically sets the Quality Settings property `enableLODCrossFade` to `True` if you enabled it in the HDRP Asset.
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## Decals in HDRP Path Tracer
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HDRP 16 includes path tracer decal rendering, which means you might need to increase the [Maximum Lights per Cell (Ray Tracing)](https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@latest?subfolder=/manual/HDRP-Asset.html#Lights) value and the size of the [decal atlas](https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@latest?subfolder=/manual/HDRP-Asset.html#Decals) to render decals correctly.
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## Default Volume Profile
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The HDRP Default Volume defines the default values for the Default layer and all other volume layers.
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## Light Baking
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From version 16, baked probe volumes and lightmaps that contain lights that use the **Mixed** mode take the **Intensity multiplier** property into account.
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## Volume Framework
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When you create a custom Volume component class that overrides the `VolumeComponent.Override(VolumeComponent state, float interpFactor)` method, your implementation must set the `VolumeParameter.overrideState` property to `true` whenever the `VolumeParameter` value is changed. This ensures that the Volume framework resets the parameters to their correct default values. This lets the framework to use fewer resources every frame which improves performance.
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For an example, refer to the [Override(VolumeComponent, float)](xref:UnityEngine.Rendering.VolumeParameter.overrideState) description.
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