Implement shutting down individual replay outputs

* This means e.g. that if the mesh output view gets closed, we don't
  keep it around internally and keep calling InitPostVSBuffers for it.

qrenderdoc/Windows/BufferViewer.cpp

@@ -1274,6 +1274,9 @@ void BufferViewer::stageRowMenu(MeshDataStage stage, QMenu *menu, const QPoint &
 
 BufferViewer::~BufferViewer()
 {
+  if(m_Output)
+    m_Output->Shutdown();
+
   if(m_ModelVSIn->indices)
     m_ModelVSIn->indices->deref();
 

qrenderdoc/Windows/TextureViewer.cpp

@@ -652,6 +652,9 @@ TextureViewer::TextureViewer(ICaptureContext &ctx, QWidget *parent)
 
 TextureViewer::~TextureViewer()
 {
+  if(m_Output)
+    m_Output->Shutdown();
+
   m_Ctx.BuiltinWindowClosed(this);
   m_Ctx.RemoveLogViewer(this);
   delete ui;

renderdoc/api/replay/renderdoc_replay.h

@@ -404,6 +404,13 @@ The different types are enumerated in :class:`ReplayOutputType`.
 )");
 struct IReplayOutput
 {
+  DOCUMENT(R"(Shutdown this output.
+
+It's optional to call this, as calling :meth:`ReplayController.Shutdown` will shut down all of its
+outputs.
+)");
+  virtual void Shutdown() = 0;
+
   DOCUMENT("Sets the :class:`TextureDisplay` configuration for a texture output.");
   virtual void SetTextureDisplay(const TextureDisplay &o) = 0;
 
@@ -587,12 +594,6 @@ struct IReplayController
   DOCUMENT("Shutdown and destroy the current interface and all outputs that have been created.");
   virtual void Shutdown() = 0;
 
-  DOCUMENT(R"(Shutdown a particular output.
-
-:param ReplayOutput output: The output to shut down.
-)");
-  virtual void ShutdownOutput(IReplayOutput *output) = 0;
-
   DOCUMENT(R"(Goes into a blocking loop, repeatedly replaying the open capture as fast as possible,
 displaying the selected texture in a default unscaled manner to the given output window.
 

renderdoc/replay/replay_controller.cpp

@@ -1427,7 +1427,17 @@ ReplayOutput *ReplayController::CreateOutput(WindowingSystem system, void *data,
 
 void ReplayController::ShutdownOutput(IReplayOutput *output)
 {
-  RDCUNIMPLEMENTED("Shutting down individual outputs");
+  for(auto it = m_Outputs.begin(); it != m_Outputs.end(); ++it)
+  {
+    if((IReplayOutput *)*it == output)
+    {
+      delete *it;
+      m_Outputs.erase(it);
+      return;
+    }
+  }
+
+  RDCERR("Unrecognised output");
 }
 
 void ReplayController::Shutdown()

renderdoc/replay/replay_controller.h

@@ -37,6 +37,7 @@ struct ReplayController;
 struct ReplayOutput : public IReplayOutput
 {
 public:
+  void Shutdown();
   void SetTextureDisplay(const TextureDisplay &o);
   void SetMeshDisplay(const MeshDisplay &o);
 

renderdoc/replay/replay_output.cpp

@@ -117,6 +117,11 @@ ReplayOutput::~ReplayOutput()
   ClearThumbnails();
 }
 
+void ReplayOutput::Shutdown()
+{
+  m_pRenderer->ShutdownOutput(this);
+}
+
 void ReplayOutput::SetTextureDisplay(const TextureDisplay &o)
 {
   if(o.overlay != m_RenderData.texDisplay.overlay ||