[perf] Benchmark glyph painting
diff --git a/perf/benchmark-font.cc b/perf/benchmark-font.cc
index 244e06a..67e0517 100644
--- a/perf/benchmark-font.cc
+++ b/perf/benchmark-font.cc
@@ -42,6 +42,7 @@
   glyph_h_advances,
   glyph_extents,
   draw_glyph,
+  paint_glyph,
   load_face_and_shape,
 };
 
@@ -192,6 +193,17 @@
       hb_draw_funcs_destroy (draw_funcs);
       break;
     }
+    case paint_glyph:
+    {
+      hb_paint_funcs_t *paint_funcs = hb_paint_funcs_create ();
+      for (auto _ : state)
+      {
+	for (unsigned gid = 0; gid < num_glyphs; ++gid)
+	  hb_font_paint_glyph (font, gid, paint_funcs, nullptr, 0, 0);
+      }
+      hb_paint_funcs_destroy (paint_funcs);
+      break;
+    }
     case load_face_and_shape:
     {
       for (auto _ : state)
@@ -294,6 +306,7 @@
   TEST_OPERATION (glyph_h_advances, benchmark::kMicrosecond);
   TEST_OPERATION (glyph_extents, benchmark::kMicrosecond);
   TEST_OPERATION (draw_glyph, benchmark::kMicrosecond);
+  TEST_OPERATION (paint_glyph, benchmark::kMillisecond);
   TEST_OPERATION (load_face_and_shape, benchmark::kMicrosecond);
 
 #undef TEST_OPERATION