Fixed missing BeginCameraRendering call for custom render mode of a Camera

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

@@ -40,6 +40,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed an issue with the capture callback (now includes post processing results).
 - Fixed decal draw order for ShaderGraph decal materials.
 - Fixed StackLit ShaderGraph surface option property block to only display energy conserving specular color option for the specular parametrization (case 1257050)
+- Fixed missing BeginCameraRendering call for custom render mode of a Camera.
 
 ### Changed
 - Removed the material pass probe volumes evaluation mode.

com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/HDRenderPipeline.cs

@@ -1389,6 +1389,7 @@ protected override void Render(ScriptableRenderContext renderContext, Camera[] c
                     {
                         skipRequest = true;
                         // Execute custom render
+                        UnityEngine.Rendering.RenderPipeline.BeginCameraRendering(renderContext, camera);
                         additionalCameraData.ExecuteCustomRender(renderContext, hdCamera);
                     }