Rasagar/Library/PackageCache/com.unity.render-pipelines.high-definition/Documentation~/snippets/shader-properties/surface-options/postpass-threshold.md

- Postpass Threshold

The alpha value limit HDRP uses for the transparent depth postpass. This works in the same way as the main Threshold property described above.
This property only appears when you enable the Transparent Depth Postpass checkbox.