Unity-Technologies
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diff --git a/‎com.unity.render-pipelines.core/Editor/Camera/CameraUI.Drawers.cs
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diff --git a/‎com.unity.render-pipelines.core/Runtime/RenderGraph/RenderGraphResourceRegistry.cs
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diff --git a/‎com.unity.render-pipelines.high-definition/CHANGELOG.md
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diff --git a/‎com.unity.render-pipelines.high-definition/Documentation~/AOVs.md
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diff --git a/‎com.unity.render-pipelines.high-definition/Documentation~/Decal.md
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diff --git a/‎com.unity.render-pipelines.high-definition/Documentation~/Default-Settings-Window.md
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diff --git a/‎com.unity.render-pipelines.high-definition/Documentation~/Dynamic-Resolution.md
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@@ -109,7 +109,10 @@ static void DrawerPerspectiveType(ISerializedCamera p, Editor owner)
             EditorGUI.BeginChangeCheck();
             isPhysicalCamera = EditorGUILayout.Toggle(content, isPhysicalCamera);
             if (EditorGUI.EndChangeCheck())
+            {
                 p.projectionMatrixMode.intValue = isPhysicalCamera ? (int)ProjectionMatrixMode.PhysicalPropertiesBased : (int)ProjectionMatrixMode.Implicit;
+                s_FovChanged = true;
+            }
             EditorGUILayout.EndHorizontal();
             EditorGUI.EndProperty();
 
 
@@ -104,9 +104,15 @@ internal RTHandle GetTexture(in TextureHandle handle)
             if (!handle.IsValid())
                 return null;
 
-            var resource = GetTextureResource(handle.handle).graphicsResource;
-            if (resource == null && handle.fallBackResource != TextureHandle.nullHandle.handle)
-                return GetTextureResource(handle.fallBackResource).graphicsResource;
+            var texResource = GetTextureResource(handle.handle);
+            var resource = texResource.graphicsResource;
+            if (resource == null)
+            {
+                if (handle.fallBackResource != TextureHandle.nullHandle.handle)
+                    return GetTextureResource(handle.fallBackResource).graphicsResource;
+                else if (!texResource.imported)
+                    throw new InvalidOperationException("Trying to use a texture that was already released or not yet created. Make sure you declare it for reading in your pass or you don't read it before it's been written to at least once.");
+            }
 
             return resource;
         }
@@ -132,7 +138,11 @@ internal ComputeBuffer GetComputeBuffer(in ComputeBufferHandle handle)
             if (!handle.IsValid())
                 return null;
 
-            return GetComputeBufferResource(handle.handle).graphicsResource;
+            var resource = GetComputeBufferResource(handle.handle);
+            if (resource == null)
+                throw new InvalidOperationException("Trying to use a compute buffer that was already released or not yet created. Make sure you declare it for reading in your pass or you don't read it before it's been written to at least once.");
+
+            return resource.graphicsResource;
         }
 
         private RenderGraphResourceRegistry()
 
@@ -43,6 +43,19 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed camera bridge action in release build (case 1367866).
 - Fixed contact shadow disappearing when shadowmask is used and no non-static object is available.
 - Fixed atmospheric scattering being incorrectly enabled when scene lighting is disabled.
+- Fixed shader graph errors when disabling the bias on texture samplers.
+- Fixed a shader warning in the volumetric clouds combine file.
+- Fixed layer lit shader UI.
+- Fixed error thrown when layered lit material has an invalid material type.
+- Fixed a warning because of a null texture in the lens flare pass.
+- Fixed a nullref when enabling raycount without ray tracing.
+- Fixed default value of "Distortion Blur" from 1 to 0 according to the doc.
+- Fixed FOV change when enabling physical camera.
+- Fixed spot light shadows near plane
+- Fixed Transparent Depth Pre/Post pass by default for the built-in HDRP Hair shader graph.
+- Fixed build warnings due to the exception in burst code (case 1382827).
+- Fixed unsupported material properties show when rendering pass is Low Resolution.
+- Fixed auto-exposure mismatch between sky background and scene objects in path tracing (case 1385131).
 
 ## [12.1.2] - 2021-10-22
 
 
@@ -18,8 +18,8 @@ Here is the list of Material properties that you can access with the AOV API.
 
 | Material property | Description               |
 |-------------------|---------------------------|
-| **Normal**        | Outputs the surface albedo. |
-| **Albedo**        | Outputs the surface normal. |
+| **Albedo**        | Outputs the surface albedo. |
+| **Normal**        | Outputs the surface normal. |
 | **Smoothness**    | Outputs the surface smoothness. |
 | **Ambient Occlusion** | Outputs the ambient occlusion (N/A for AxF). **Note**: the ambient occlusion this outputs does not include ray-traced/screen-space ambient occlusion from the [Ambient Occlusion override](Override-Ambient-Occlusion.md). It only includes ambient occlusion from materials in the Scene. |
 | **Specular**      | Outputs the surface specularity. |
 
@@ -1,40 +1,57 @@
 # Decal
 
-The High Definition Render Pipeline (HDRP) includes two ways to create decals in a Scene. You can either use a decal Mesh and manually position the decal or use the [Decal Projector](Decal-Projector.md) component to project the decal. Both of these methods require that you create a decal Material, which is a Material that uses either the [Decal Shader](Decal-Shader.md) or [Decal Master Stack](master-stack-decal.md). You can use either to create decal Materials that you can place or project into a Scene.
+The High Definition Render Pipeline (HDRP) includes the following ways to create decals in a Scene.
 
-![](Images/HDRPFeatures-DecalShader.png)
+- Use a Decal Mesh and manually position the decal.
+
+- Use the [Decal Projector](Decal-Projector.md) component to project the decal.
 
-**Limitation and compatibility**
+To use these methods, you need to create a decal Material. A decal Material is a Material that uses the [Decal Shader](Decal-Shader.md) or [Decal Master Stack](master-stack-decal.md). You can then place or project your decal Material into a Scene.
 
-The Decal Projector can affect opaque Materials with either a [Decal Shader](Decal-Shader.md) or a [Decal Master Stack](master-stack-decal.md). However, it can only affect transparent Materials with the [Decal Shader](Decal-Shader.md). It does not support emissive on Transparent Materials and does support Decal Layers.
-Decal Meshes can only affect opaque Materials with either a [Decal Shader](Decal-Shader.md) or a [Decal Master Stack](master-stack-decal.md). They also do not support Decal Layers.
+![](Images/HDRPFeatures-DecalShader.png)
 
 ## Decal Layers
 
+HDRP includes Decal Layers that you can use to specify which Materials a decal affects based on which layer you assign it to.
+
 ### Enabling Decal Layers
 
-To use Decal Layers, first enable them in your Project’s [HDRP Asset](HDRP-Asset.md). You can then enable Decal Layers in your [Frame Settings](Frame-Settings.md) to set your Cameras to process Decal Layers.
-1. Select the HDRP Asset in the Project window and, in the Inspector, go to **Decal > Layers** and enable the checkbox.
-2. To enable Decal Layers for all Cameras, open the [HDRP Global Settings](Default-Settings-Window.md), go to the **Frame Settings (Default Values) > Camera** section and, in the **Rendering** section, enable the **Decal Layers** checkbox.
+To use Decal Layers, enable them in your Project’s [HDRP Asset](HDRP-Asset.md).  To do this:
+1. Navigate to the **Project** window and open your HDRP Asset.
+2. In the Inspector, open the **Decals** dropdown.
+3. Enable the  **Layers**  checkbox.
+
+You can then enable Decal Layers in your [Frame Settings](Frame-Settings.md) to enable Decal Layers for all Cameras. To do this:
 
-To override the Frame Settings for a specific Camera and set Decal Layers on an individual basis:
+1. Go to **Edit** > **Project Settings** open the **Graphics** section and select [HDRP Global Settings](Default-Settings-Window.md).
+2. Go to the **Frame Settings (Default Values**) > **Camera** section.
+3. Open the **Rendering** section.
+4. Enable the **Decal Layers** checkbox.
+
+To control the Frame Settings and set Decal Layers for a specific Camera:
 
 1. Click on a Camera in the Scene view or Hierarchy window to view its properties in the Inspector.
-2. Go to the **General** section and enable the **Custom Frame Settings** checkbox. This exposes the **Frame Settings Overrides,** which you can use to customize this Camera only.
-3. In the **Rendering** section, enable the **Decal Layers** checkbox to make this Camera use Decal Layers.
+2. Go to the **Rendering** section and enable the **Custom Frame Settings** checkbox. This opens a new **Frame Settings Overrides** section, which you can use to customize this Camera.
+3. In the **Frame Settings Overrides** section open the **Rendering** section.
+4. Enable the **Decal Layers** checkbox.
 
 ### Using Decal Layers
 
-After you enable Decal Layers, you can then use them to decouple Meshes from certain Decal Projectors in your Scene. To do this:
+When you enable Decal Layers, a Decal only affects a Mesh Renderer or Terrain if they both use a matching Decal Layer. You can use Decal Layers to separate Meshes from specific [Decal Projectors](Decal-Projector.md) in your Scene. To do this:
 
 1. Click on a Decal Projector in the Hierarchy or the Scene view to view it in the Inspector.
 2. Use the **Decal Layer** property drop-down to select which Decal Layers this Decal Projector affects.
 4. Click on a Mesh Renderer or Terrain in the Hierarchy or the Scene view to view it in the Inspector.
-5. Use the **Rendering Layer Mask** drop-down (See [MeshRenderer](https://docs.unity3d.com/Manual/class-MeshRenderer.html) for GameObjects or [OtherSettings](https://docs.unity3d.com/Manual/terrain-OtherSettings.html) for Terrain) to select which Decal Layers affect this Mesh Renderer or Terrain. When you enable Decal Layers, a Decal only affects a Mesh Renderer or Terrain if they both use a matching Decal Layer.
+5. Use the **Rendering Layer Mask** drop-down (See [MeshRenderer](https://docs.unity3d.com/Manual/class-MeshRenderer.html) for GameObjects or [OtherSettings](https://docs.unity3d.com/Manual/terrain-OtherSettings.html) for Terrain) to select which Decal Layers affect this Mesh Renderer or Terrain.
 
 ### Renaming Decal Layers
 
-By default, in the UI for Decal Projectors, Mesh Renderers, or Terrain, Decal Layers are named **Decal Layer 1-7**. To more easily differentiate between them, you can give each Decal Layer a specific name. To do this, open the [HDRP Global Settings](Default-Settings-Window.md), and go to **Decal Layer Names**. Here you can set the name of each Decal Layer individually.
+By default, in the UI for Decal Projectors, Mesh Renderers, or Terrain, Decal Layers are named **Decal Layer 1-7**. You can give each Decal Layer a specific name. To do this:
+
+1. Open the [HDRP Global Settings](Default-Settings-Window.md).
+2. Expand the **Decal Layer Names** section.
+
+Here you can set the name of each Decal Layer individually.
 
 ### How Decal Layers affect performance
 
@@ -44,28 +61,45 @@ When you enable Decal Layers, it increases the build time of your project. This
 * Increases GPU performance cost.
 * Generates more [Shader Variants](https://docs.unity3d.com/Manual/shader-variants.html).
 
-If you use the Decal Layer system to disable a decal, via the **Rendering Layer Mask** of a Mesh Renderer or Terrain, it doesn't save on any performance. Instead, to save performance, you need to disable the **Receive Decals** property for the Mesh Renderer or Terrain's Material.
+HDRP renders Material depth in a Depth Prepass to apply decals to opaque Materials. This increases resource use on the CPU. Only Materials that have the **Receive Decals** property enabled render in the Depth Prepass, unless you force a full Depth Prepass. To prevent HDRP from rendering a Material which shouldn't receive Decals in the Depth Prepass:
 
-Implementation detail: To allow HDRP to apply decals to opaque Materials, it must render depth in a Depth Prepass, which adds to the CPU resource intensity of the operation. Only Materials with **Receive Decals** enabled render in the Depth Prepass, unless you force a full Depth Prepass. If you disable a decal with the Decal Layers system, HDRP still renders it in the Depth Prepass. This is why you need to disable the **Receive Decals** property on Materials to save performance.
+1. Open the Material assigned to a Mesh Renderer or Terrain that you do not want to display decals on.
 
-### Migration of data previous to Unity 2020.2
+2. Disable the **Receive Decals** property.
 
-Before Unity 2020.2, the default value for the **Rendering Layer Mask** for new Mesh Renderers and Terrain doesn't include any of the Decal Layer flags. This means that, when you enable Decal Layers, these Mesh Renderers and Terrain default to not receive any Decals. Later versions use **Decal Layer Default**  by default.
+If you use the Decal Layer system to change the **Rendering Layer Mask** of a Mesh Renderer or Terrain to disable decal, it doesn't have an effect on your application's performance.
 
 ## Additive Normal Blending
 
-Additive normal blending is a method that can be enabled per project to allow decal normals to be additively blended with the underlying object normal.
-The screenshot on the left below do not use additive normal blending, whereas the screenshot on the right does.
+You can use Additive normal blending to blend decal normals with the normals of a specific GameObject.
+In the following image examples, the screenshot on the left does not use additive normal blending, and the screenshot on the right uses additive normal blending.:
 
 ![](Images/HDRPFeatures-SurfGrad.png)
 
 To use Additive Normal Blending:
-1. Select your Project’s [HDRP Asset](HDRP-Asset.md).
-2. In the Inspector, go to **Rendering > Decals** and enable the **Additive Normal Blending** checkbox.
+1. Open your Project’s [HDRP Asset](HDRP-Asset.md).
+2. In the Inspector, go to **Rendering**  >**Decals** and enable the **Additive Normal Blending** checkbox.
 
 ### High Precision Normal Buffer
 
-When using additive normal blending, HDRP will constrain the decal displacement to a cone of 45° around the object normal to reduce banding artifacts.
-To remove the angle constraint on the normal at the cost of a higher memory usage, you can tell HDRP to use a High Precision Normal Buffer:
+When you use additive normal blending, HDRP constrains the decal displacement to a cone of 45° around the object normal to reduce banding artifacts.
+To remove this angle constraint on the normal at the cost of a higher memory usage, enable the High Precision Normal Buffer setting. To do this:
+
 1. Select your Project’s [HDRP Asset](HDRP-Asset.md).
-2. In the Inspector, go to **Rendering > Decals** and enable the **High Precision Normal Buffer** checkbox.
+2. In the Inspector, go to **Rendering** > **Decals** and enable the **High Precision Normal Buffer** checkbox.
+
+## Limitations
+
+- A Decal Projector can only affect transparent Materials when you use the [Decal Shader](Decal-Shader.md).
+
+- The Decal Shader does not support emissive on Transparent Materials and does support Decal Layers.
+
+- Decal Meshes can only affect opaque Materials with either a [Decal Shader](Decal-Shader.md) or a [Decal Master Stack](master-stack-decal.md).
+
+- Decal Meshes do not support Decal Layers.
+
+### Migration of data previous to Unity 2020.2
+
+When you convert a project from 2020.2, Mesh renderers and Terrain do not receive any decals by default.
+
+This is because, before Unity 2020.2, the default value for the **Rendering Layer Mask** for new Mesh Renderers and Terrain doesn't include Decal Layer flags.
@@ -7,7 +7,7 @@ The High Definition Render Pipeline (HDRP) adds the HDRP Settings tab to Unity's
 - Set up default [Frame Setting](Frame-Settings.md) values for [Cameras](HDRP-Camera.md) to use.
 - Assign and edit a default [Volume Profile](Volume-Profile.md).
 
-The HDRP Settings tab is part of the Graphics Settings window. To get to this tab, select **Edit > Project Settings > Graphics** and then, in the sidebar, click **HDRP Settings**.
+The HDRP Settings tab is part of the Graphics Settings window. To get to this tab, select **Edit > Project Settings > Graphics** and then, in the sidebar, click **HDRP Global Settings**.
 
 ## Volume Profiles
 
 
@@ -108,7 +108,7 @@ HDRP provides the following upscale filter methods:
 
 ## Overriding upscale options with code
 
-You can also override the upscale options in the HDRP Asset for each Camera in your scene using code. To do this, call DynamicResolutionHandler.SetUpscaleFilter(Camera camera, DynamicResUpscaleFilter filter), to make HDRP ignore the value in the HDRP Asset for a given Camera.
+You can also override the upscale options in the HDRP Asset for each Camera in your scene using code. To do this, call `DynamicResolutionHandler.SetUpscaleFilter(Camera camera, DynamicResUpscaleFilter filter)`, to make HDRP ignore the value in the HDRP Asset for a given Camera.
 
 <a name="TAA_Notes"></a>