1 files changed, 1 insertions, 0 deletions
diff --git a/gm/srcmode.cpp b/gm/srcmode.cpp
index b984e39d08..21cf9797f5 100644
--- a/gm/srcmode.cpp
+++ b/gm/srcmode.cpp
@@ -121,6 +121,7 @@ protected:
         }
         sk_sp<SkSurface> surface = callNewSurface ? canvas->makeSurface(info) : nullptr;
         if (nullptr == surface) {
+            // picture canvas will return null, so fall-back to raster
             surface = SkSurface::MakeRaster(info);
         }
         return surface;