Missing variable

Author: kunitoki

examples/graphics/source/main.cpp

@@ -334,6 +334,7 @@ class CustomWindow
     std::vector<float> renderData;
     std::vector<float> inputData;
     yup::CriticalSection renderMutex;
+    int readPos = 0;
 
     yup::OwnedArray<yup::Slider> sliders;
     int totalRows = 4;