diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..feafbfe
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,3 @@
+*.exe filter=lfs diff=lfs merge=lfs -text
+*.dll filter=lfs diff=lfs merge=lfs -text
+*.pdb filter=lfs diff=lfs merge=lfs -text
diff --git a/20210129/demo - wpf/RenderApp.exe b/20210129/demo - wpf/RenderApp.exe
index 1ba5bf0..427ede5 100644
Binary files a/20210129/demo - wpf/RenderApp.exe and b/20210129/demo - wpf/RenderApp.exe differ