diff --git a/.gitignore b/.gitignore
index 5fefd59..a99140f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,6 @@ materialsystem/shaderlib/Release/
 /.vs
 /.vs/SourceDEFUN/v17/Solution.VC.db-shm
 /.vs/SourceDEFUN/v17/Browse.VC.db
+/build
+/materialsystem/shaderlib/.vs
+/materialsystem/swarmshaders/.vs