Implement a Performance Counter Viewer pane, hook up selection dialog

qrenderdoc/Code/Interface/QRDInterface.h

@@ -1147,6 +1147,13 @@ as well as messages generated during replay and analysis.
 )");
   virtual IDebugMessageView *GetDebugMessageView() = 0;
 
+  DOCUMENT(R"(Retrieve the current singleton :class:`PerformanceCounterViewer`.
+
+:return: The current window, which is created (but not shown) it there wasn't one open.
+:rtype: PerformanceCounterViewer
+)");
+  virtual IPerformanceCounterViewer *GetPerformanceCounterViewer() = 0;
+
   DOCUMENT(R"(Retrieve the current singleton :class:`StatisticsViewer`.
 
 :return: The current window, which is created (but not shown) it there wasn't one open.
@@ -1217,6 +1224,13 @@ as well as messages generated during replay and analysis.
 )");
   virtual bool HasDebugMessageView() = 0;
 
+  DOCUMENT(R"(Check if there is a current :class:`PerformanceCounterViewer` open.
+
+:return: ``True`` if there is a window open.
+:rtype: ``bool``
+)");
+  virtual bool HasPerformanceCounterViewer() = 0;
+
   DOCUMENT(R"(Check if there is a current :class:`StatisticsViewer` open.
 
 :return: ``True`` if there is a window open.
@@ -1253,6 +1267,10 @@ as well as messages generated during replay and analysis.
   DOCUMENT(
       "Raise the current :class:`DebugMessageView`, showing it in the default place if needed.");
   virtual void ShowDebugMessageView() = 0;
+  DOCUMENT(
+      "Raise the current :class:`PerformanceCounterViewer`, showing it in the default place if "
+      "needed.");
+  virtual void ShowPerformanceCounterViewer() = 0;
   DOCUMENT(
       "Raise the current :class:`StatisticsViewer`, showing it in the default place if needed.");
   virtual void ShowStatisticsViewer() = 0;