[HDRP] Adding transparency setup scenes to material sample

com.unity.render-pipelines.high-definition/CHANGELOG.md

@@ -26,6 +26,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Changed
 - Optimizations for the physically based depth of field.
+- Converted most TGA textures files to TIF to reduce the size of HDRP material samples.
+- Changed sample scene in HDRP material samples: add shadow transparency (raster, ray-traced, path-traced).
 
 ## [13.1.1] - 2021-10-04
 

com.unity.render-pipelines.high-definition/Documentation~/HDRP-Sample-Content.md

@@ -36,6 +36,9 @@ The Fabric, Hair and Eye Master Nodes usually require various work from artists
 
 In the **Eye** Scene, the eye examples use a carefully designed mesh with a particular UV setup at a specific import scale factor. If you want to produce eyes of similar quality, open the eye mesh in 3D modelling software to see how the mesh is contructed and the UVs are setup.
 
+In the Transparency scenes, the examples contain information on how to setup properly transparents in your projects using different rendering methods (Rasterization, Ray Tracing, Path Tracing).
+To take advantage of all the content of this section, a GPU that supports [Ray Tracing](Ray-Tracing-Getting-Started.md) is needed.
+
 ## Lens Flare Samples
 
 ![Lens Flare Samples](Images/LensFlareSamples.png)

com.unity.render-pipelines.high-definition/Documentation~/whats-new-13.md

@@ -4,6 +4,13 @@ This page contains an overview of new features, improvements, and issues resolve
 
 ## Added
 
+### Material Samples Transparency Scenes
+
+![](Images/HDRP-MaterialSample-ShadowsTransparency.png)
+
+These new scenes include examples and informations on how to setup properly transparents in your projects using different rendering methods (Rasterization, Ray Tracing, Path Tracing).
+To take advantage of all the content of the sample, a GPU that supports [Ray Tracing](Ray-Tracing-Getting-Started.md) is needed.
+
 ### Material Runtime API
 
 From this HDRP version, you can use new APIs to run shader validation steps from script at runtime, both in the editor and in standalone builds. You can use this to change the keyword state or one or more properties in order to enable or disable HDRP shader features on a Material.

com.unity.render-pipelines.high-definition/Samples~/MaterialSamples/Materials/Anodized Metal.mat

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