@@ -5,6 +5,7 @@
 #include "display_list/dl_sampling_options.h"
 #include "display_list/dl_tile_mode.h"
 #include "display_list/dl_vertices.h"
+#include "display_list/effects/dl_mask_filter.h"
 #include "flutter/impeller/display_list/aiks_unittests.h"
 
 #include "flutter/display_list/dl_blend_mode.h"
@@ -550,5 +551,23 @@ TEST_P(AiksTest,
   ASSERT_TRUE(OpenPlaygroundHere(builder.Build()));
 }
 
+// Regression test for https://github.com/flutter/flutter/issues/170480 .
+TEST_P(AiksTest, VerticesGeometryWithMaskFilter) {
+  DisplayListBuilder builder;
+  DlPaint paint;
+  paint.setMaskFilter(DlBlurMaskFilter::Make(DlBlurStyle::kNormal, 10));
+
+  std::vector<DlPoint> vertex_coordinates = {
+      DlPoint(0, 0),
+      DlPoint(400, 0),
+      DlPoint(0, 400),
+  };
+  auto vertices = MakeVertices(DlVertexMode::kTriangleStrip, vertex_coordinates,
+                               {0, 1, 2}, {}, {});
+
+  builder.DrawVertices(vertices, DlBlendMode::kSrcOver, paint);
+  ASSERT_TRUE(OpenPlaygroundHere(builder.Build()));
+}
+
 }  // namespace testing
 }  // namespace impeller
@@ -14,7 +14,6 @@
 #include "display_list/effects/dl_color_filter.h"
 #include "display_list/effects/dl_color_source.h"
 #include "display_list/effects/dl_image_filter.h"
-#include "display_list/geometry/dl_path_builder.h"
 #include "display_list/image/dl_image.h"
 #include "flutter/fml/logging.h"
 #include "flutter/fml/trace_event.h"
 
@@ -221,4 +221,8 @@ bool DlVerticesGeometry::MaybePerformIndexNormalization(
   return false;
 }
 
+bool DlVerticesGeometry::CanApplyMaskFilter() const {
+  return false;
+}
+
 }  // namespace impeller
@@ -37,6 +37,9 @@ class DlVerticesGeometry final : public VerticesGeometry {
 
   bool HasTextureCoordinates() const override;
 
+  // |Geometry|
+  bool CanApplyMaskFilter() const override;
+
   std::optional<Rect> GetTextureCoordinateCoverage() const override;
 
  private:
Original file line number	Diff line number	Diff line change
`@@ -221,4 +221,8 @@ bool DlVerticesGeometry::MaybePerformIndexNormalization(`
`221`	`221`	`return false;`
`222`	`222`	`}`
`223`	`223`
	`224`	`+bool DlVerticesGeometry::CanApplyMaskFilter() const {`
	`225`	`+ return false;`
	`226`	`+}`
	`227`	`+`
`224`	`228`	`} // namespace impeller`