Hydrogent: reset TAA when view mode changes

Author: TheMostDiligent

Hydrogent/interface/Tasks/HnBeginFrameTask.hpp

@@ -192,6 +192,8 @@ class HnBeginFrameTask final : public HnTask
 
     Timer m_FrameTimer;
 
+    HN_VIEW_MODE m_ViewMode = HN_VIEW_MODE_SHADED;
+
     double m_CurrFrameTime           = 0;
     double m_FallBackPsoUseStartTime = -1;
     double m_FallBackPsoUseEndTime   = -1;

Hydrogent/src/Tasks/HnBeginFrameTask.cpp

@@ -371,6 +371,12 @@ void HnBeginFrameTask::Prepare(pxr::HdTaskContext* TaskCtx,
         LOG_ERROR_MESSAGE("Camera Id is empty");
     }
 
+    if (m_ViewMode != pRenderParam->GetViewMode())
+    {
+        m_ViewMode = pRenderParam->GetViewMode();
+        ResetTAA   = true;
+    }
+
     (*TaskCtx)[HnRenderResourceTokens->taaReset] = pxr::VtValue{ResetTAA};
 
     if (ITextureView* pFinalColorRTV = GetRenderBufferTarget(*RenderIndex, m_Params.FinalColorTargetId))