Fix camera cut flag in rendering to not trigger on origin change for smother visuals

Source/Engine/Graphics/RenderView.h

@@ -265,6 +265,14 @@ public:
         return Projection.M44 >= 1.0f;
     }
 
+    /// <summary>
+    /// Determines whether view Origin has been moved in this frame. Old history buffers/data might be invalid.
+    /// </summary>
+    FORCE_INLINE bool IsOriginTeleport() const
+    {
+        return Origin != PrevOrigin;
+    }
+
 public:
     // Ignore deprecation warnings in defaults
     PRAGMA_DISABLE_DEPRECATION_WARNINGS

Source/Engine/Renderer/Renderer.cpp

@@ -353,8 +353,6 @@ void RenderInner(SceneRenderTask* task, RenderContext& renderContext, RenderCont
     const bool isGBufferDebug = GBufferPass::IsDebugView(renderContext.View.Mode);
     {
         PROFILE_CPU_NAMED("Setup");
-        if (renderContext.View.Origin != renderContext.View.PrevOrigin)
-            renderContext.Task->CameraCut(); // Cut any temporal effects on rendering origin change
         const int32 screenWidth = renderContext.Buffers->GetWidth();
         const int32 screenHeight = renderContext.Buffers->GetHeight();
         setup.UpscaleLocation = renderContext.Task->UpscaleLocation;

Source/Engine/Renderer/VolumetricFogPass.cpp

@@ -179,7 +179,7 @@ bool VolumetricFogPass::Init(RenderContext& renderContext, GPUContext* context,
         (float)_cache.GridSizeZ);
     auto& fogData = renderContext.Buffers->VolumetricFogData;
     fogData.MaxDistance = options.Distance;
-    if (renderContext.Task->IsCameraCut)
+    if (renderContext.Task->IsCameraCut || renderContext.View.IsOriginTeleport())
         _cache.HistoryWeight = 0.0f;
 
     // Init data (partial, without directional light or sky light data);
@@ -313,7 +313,7 @@ void VolumetricFogPass::Render(RenderContext& renderContext)
     PROFILE_GPU_CPU("Volumetric Fog");
 
     // TODO: test exponential depth distribution (should give better quality near the camera)
-    // TODO: use tiled light culling and render unshadowed lights in single pass
+    // TODO: use tiled light culling and render shadowed/unshadowed lights in single pass
 
     // Try to get shadows atlas
     GPUTexture* shadowMap;