Add access for changing the 3D preview stage in mesh viewer

qrenderdoc/Code/Interface/QRDInterface.h

@@ -572,6 +572,13 @@ buffer view.
 )");
   virtual void SetCurrentView(int32_t view) = 0;
 
+  DOCUMENT(R"(For a mesh view, set the current preview stage. This is ignored when called on a raw
+buffer view.
+
+:param MeshDataStage stage: The stage to show
+)");
+  virtual void SetPreviewStage(MeshDataStage stage) = 0;
+
 protected:
   IBufferViewer() = default;
   ~IBufferViewer() = default;

qrenderdoc/Windows/BufferViewer.cpp

@@ -3399,6 +3399,19 @@ void BufferViewer::SetCurrentView(int32_t view)
     ui->viewIndex->setValue(view);
 }
 
+void BufferViewer::SetPreviewStage(MeshDataStage stage)
+{
+  if(m_MeshView)
+  {
+    if(stage == MeshDataStage::VSIn)
+      ui->outputTabs->setCurrentIndex(0);
+    else if(stage == MeshDataStage::VSOut)
+      ui->outputTabs->setCurrentIndex(1);
+    else if(stage == MeshDataStage::GSOut)
+      ui->outputTabs->setCurrentIndex(2);
+  }
+}
+
 void BufferViewer::ViewBuffer(uint64_t byteOffset, uint64_t byteSize, ResourceId id,
                               const rdcstr &format)
 {

qrenderdoc/Windows/BufferViewer.h

@@ -88,6 +88,7 @@ public:
   void ScrollToColumn(int32_t column, MeshDataStage stage = MeshDataStage::VSIn) override;
   void SetCurrentInstance(int32_t instance) override;
   void SetCurrentView(int32_t view) override;
+  void SetPreviewStage(MeshDataStage stage) override;
 
   // ICaptureViewer
   void OnCaptureLoaded() override;