diff --git a/libs/hwui/Matrix.h b/libs/hwui/Matrix.h
index df744be..af520bd 100644
--- a/libs/hwui/Matrix.h
+++ b/libs/hwui/Matrix.h
@@ -26,6 +26,12 @@
 namespace android {
 namespace uirenderer {
 
+#define MATRIX_STRING "[%.2f %.2f %.2f] [%.2f %.2f %.2f] [%.2f %.2f %.2f]"
+#define MATRIX_ARGS(m) \
+    (m)->get(0), (m)->get(1), (m)->get(2), \
+    (m)->get(3), (m)->get(4), (m)->get(5), \
+    (m)->get(6), (m)->get(7), (m)->get(8)
+
 ///////////////////////////////////////////////////////////////////////////////
 // Classes
 ///////////////////////////////////////////////////////////////////////////////