diff --git a/def.go b/def.go
index 6a7030f..b05a12e 100644
--- a/def.go
+++ b/def.go
@@ -299,6 +299,7 @@ type InitType struct {
 	SizeStr        string
 	Size           SizeType
 	FontDirStr     string
+	Density        float64
 }
 
 // FontLoader is used to read fonts (JSON font specification and zlib compressed font binaries)