Expose the SGCT statistics information through a property in the RenderEngine (closes #2195)

apps/OpenSpace/main.cpp

@@ -942,6 +942,9 @@ void setSgctDelegateFunctions() {
     sgctDelegate.setScreenshotFolder = [](std::string path) {
         Settings::instance().setCapturePath(std::move(path));
     };
+    sgctDelegate.showStatistics = [](bool enabled) {
+        Engine::instance().setStatsGraphVisibility(enabled);
+    };
 }
 
 void checkCommandLineForSettings(int& argc, char** argv, bool& hasSGCT, bool& hasProfile,

include/openspace/engine/windowdelegate.h

@@ -105,6 +105,8 @@ struct WindowDelegate {
     uint64_t (*swapGroupFrameNumber)() = []() { return uint64_t(0); };
 
     void (*setScreenshotFolder)(std::string) = [](std::string) {};
+
+    void (*showStatistics)(bool) = [](bool) {};
 };
 
 } // namespace openspace

include/openspace/rendering/renderengine.h

@@ -180,6 +180,7 @@ private:
 
     properties::IntListProperty _screenshotWindowIds;
     properties::BoolProperty _applyWarping;
+    properties::BoolProperty _showStatistics;
     properties::BoolProperty _screenshotUseDate;
     properties::BoolProperty _showFrameInformation;
     properties::BoolProperty _disableMasterRendering;

src/rendering/renderengine.cpp

@@ -131,6 +131,12 @@ namespace {
         "interface"
     };
 
+    constexpr openspace::properties::Property::PropertyInfo ShowStatisticsInfo = {
+        "ShowStatistics",
+        "Show Statistics",
+        "Show updating, rendering, and network statistics on all rendering nodes"
+    };
+
     constexpr openspace::properties::Property::PropertyInfo ScreenshotUseDateInfo = {
         "ScreenshotUseDate",
         "Screenshot Folder uses Date",
@@ -271,6 +277,7 @@ RenderEngine::RenderEngine()
     , _showCameraInfo(ShowCameraInfo, true)
     , _screenshotWindowIds(ScreenshotWindowIdsInfo)
     , _applyWarping(ApplyWarpingInfo, false)
+    , _showStatistics(ShowStatisticsInfo, false)
     , _screenshotUseDate(ScreenshotUseDateInfo, false)
     , _showFrameInformation(ShowFrameNumberInfo, false)
     , _disableMasterRendering(DisableMasterInfo, false)
@@ -338,6 +345,11 @@ RenderEngine::RenderEngine()
     addProperty(_screenshotWindowIds);
     addProperty(_applyWarping);
 
+    _showStatistics.onChange([this]() {
+        global::windowDelegate->showStatistics(_showStatistics);
+    });
+    addProperty(_showStatistics);
+
     _screenshotUseDate.onChange([this]() {
         // If there is no screenshot folder, don't bother with handling the change
         if (!FileSys.hasRegisteredToken("${STARTUP_SCREENSHOT}")) {