Fix Jittered Project Matrix Infinite Far Clip Plane (#4638)

* Reconstruct jittered projection matrix far plane (for Infinite )

* Changelog

Co-authored-by: sebastienlagarde <[email protected]>

Author: johnpars

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

@@ -207,6 +207,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed AxF debug output in certain configurations (case 1333780).
 - Fixed white flash when camera is reset and SSR Accumulation mode is on.
 - Fixed distortion when resizing the window in player builds with the Graphics Compositor enabled (case 1328968).
+- Fixed an issue with TAA causing objects not to render at extremely high far flip plane values.
 
 ### Changed
 - Changed Window/Render Pipeline/HD Render Pipeline Wizard to Window/Rendering/HDRP Wizard

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

@@ -1675,6 +1675,11 @@ Matrix4x4 GetJitteredProjectionMatrix(Matrix4x4 origProj)
                 planes.top += planeJitter.y;
                 planes.bottom += planeJitter.y;
 
+                // Reconstruct the far plane for the jittered matrix.
+                // For extremely high far clip planes, the decomposed projection zFar evaluates to infinity.
+                if (float.IsInfinity(planes.zFar))
+                    planes.zFar = frustum.planes[5].distance;
+
                 proj = Matrix4x4.Frustum(planes);
             }