Fix DepthOfField CoC debug view (#3466)

* Push stuff for debug

* changelog

Co-authored-by: sebastienlagarde <sebastien@unity3d.com>

Author: FrancescoC-unity

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

@@ -27,6 +27,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fix screen being over-exposed when changing very different skies.
 - Fixed incorrect debug wireframe overlay on tessellated geometry (using littessellation), caused by the picking pass using an incorrect camera matrix.
 - Fixed nullref in layered lit shader editor.
+- Fix issue with Depth of Field CoC debug view.
 
 ### Changed
 - Changed Window/Render Pipeline/HD Render Pipeline Wizard to Window/Rendering/HDRP Wizard

com.unity.render-pipelines.high-definition/Runtime/PostProcessing/PostProcessSystem.RenderGraph.cs

@@ -504,8 +504,8 @@ TextureHandle DepthOfFieldPass(RenderGraph renderGraph, HDCamera hdCamera, Textu
                             passData.farCoC = TextureHandle.nullHandle;
                         }
 
-                        passData.fullresCoC = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
-                            { colorFormat = k_CoCFormat, enableRandomWrite = true, name = "Full res CoC" });
+                        passData.fullresCoC = builder.ReadWriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
+                            { colorFormat = k_CoCFormat, enableRandomWrite = true, name = "Full res CoC" }));
 
                         GetDoFResolutionScale(passData.parameters, out float unused, out float resolutionScale);
                         float actualNearMaxBlur = passData.parameters.nearMaxBlur * resolutionScale;
@@ -557,11 +557,13 @@ TextureHandle DepthOfFieldPass(RenderGraph renderGraph, HDCamera hdCamera, Textu
                             });
 
                         source = passData.destination;
+
+                        m_HDInstance.PushFullScreenDebugTexture(renderGraph, passData.fullresCoC, FullScreenDebugMode.DepthOfFieldCoc);
                     }
                     else
                     {
-                        passData.fullresCoC = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
-                            { colorFormat = k_CoCFormat, enableRandomWrite = true, useMipMap = true, name = "Full res CoC" });
+                        passData.fullresCoC = builder.ReadWriteTexture(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
+                            { colorFormat = k_CoCFormat, enableRandomWrite = true, useMipMap = true, name = "Full res CoC" }));
 
                         passData.pingFarRGB = builder.CreateTransientTexture(new TextureDesc(Vector2.one, true, true)
                             { colorFormat = m_ColorFormat, useMipMap = true, enableRandomWrite = true, name = "DoF Source Pyramid" });
@@ -573,6 +575,7 @@ TextureHandle DepthOfFieldPass(RenderGraph renderGraph, HDCamera hdCamera, Textu
                             });
 
                         source = passData.destination;
+                        m_HDInstance.PushFullScreenDebugTexture(renderGraph, passData.fullresCoC, FullScreenDebugMode.DepthOfFieldCoc);
                     }
                 }
             }