Added a callback for custom jittered matrix

Author: Chman

PostProcessing/Runtime/Components/TaaComponent.cs

@@ -1,3 +1,4 @@
+using System;
 using UnityEngine.Rendering;
 
 namespace UnityEngine.PostProcessing
@@ -45,17 +46,25 @@ public void ResetHistory()
             m_ResetHistory = true;
         }
 
-        public void SetProjectionMatrix()
+        public void SetProjectionMatrix(Func<Vector2, Matrix4x4> jitteredFunc)
         {
             var settings = model.settings.taaSettings;
 
             var jitter = GenerateRandomOffset();
             jitter *= settings.jitterSpread;
 
             context.camera.nonJitteredProjectionMatrix = context.camera.projectionMatrix;
-            context.camera.projectionMatrix = context.camera.orthographic
-                ? GetOrthographicProjectionMatrix(jitter)
-                : GetPerspectiveProjectionMatrix(jitter);
+
+            if (jitteredFunc != null)
+            {
+                context.camera.projectionMatrix = jitteredFunc(jitter);
+            }
+            else
+            {
+                context.camera.projectionMatrix = context.camera.orthographic
+                    ? GetOrthographicProjectionMatrix(jitter)
+                    : GetPerspectiveProjectionMatrix(jitter);
+            }
 
 #if UNITY_5_5_OR_NEWER
             context.camera.useJitteredProjectionMatrixForTransparentRendering = false;

PostProcessing/Runtime/PostProcessingBehaviour.cs

@@ -16,6 +16,9 @@ public class PostProcessingBehaviour : MonoBehaviour
         // Inspector fields
         public PostProcessingProfile profile;
 
+        public Func<Vector2, Matrix4x4> jitteredMatrixFunc;
+        Matrix4x4 nonJitteredProjectionMatrix;
+
         // Internal helpers
         Dictionary<Type, KeyValuePair<CameraEvent, CommandBuffer>> m_CommandBuffers;
         List<PostProcessingComponentBase> m_Components;
@@ -149,7 +152,10 @@ void OnPreCull()
 
             // Temporal antialiasing jittering, needs to happen before culling
             if (!m_RenderingInSceneView && m_Taa.active && !profile.debugViews.willInterrupt)
-                m_Taa.SetProjectionMatrix();
+            {
+                nonJitteredProjectionMatrix = m_Context.camera.projectionMatrix;
+                m_Taa.SetProjectionMatrix(jitteredMatrixFunc);
+            }
         }
 
         void OnPreRender()
@@ -172,7 +178,7 @@ void OnPostRender()
                 return;
 
             if (!m_RenderingInSceneView && m_Taa.active && !profile.debugViews.willInterrupt)
-                m_Camera.ResetProjectionMatrix();
+                m_Context.camera.projectionMatrix = nonJitteredProjectionMatrix;
         }
 
         // Classic render target pipeline for RT-based effects