Make a couple of SurfaceAggregatorPerfTests

cc/surfaces/surface_aggregator_perftest.cc

Index: cc/surfaces/surface_aggregator_perftest.cc
diff --git a/cc/surfaces/surface_aggregator_perftest.cc b/cc/surfaces/surface_aggregator_perftest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a9d18baca4671b0852dc720f26850ce029bb7cb2
--- /dev/null
+++ b/cc/surfaces/surface_aggregator_perftest.cc
@@ -0,0 +1,136 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "cc/debug/lap_timer.h"
+#include "cc/output/compositor_frame.h"
+#include "cc/output/delegated_frame_data.h"
+#include "cc/quads/surface_draw_quad.h"
+#include "cc/quads/texture_draw_quad.h"
+#include "cc/surfaces/surface_aggregator.h"
+#include "cc/surfaces/surface_factory.h"
+#include "cc/surfaces/surface_factory_client.h"
+#include "cc/surfaces/surface_manager.h"
+#include "cc/test/fake_output_surface.h"
+#include "cc/test/fake_output_surface_client.h"
+#include "cc/test/test_shared_bitmap_manager.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/perf/perf_test.h"
+
+namespace cc {
+namespace {
+
+static const int kTimeLimitMillis = 3000;
+static const int kWarmupRuns = 5;
+static const int kTimeCheckInterval = 10;

[jamesr, 2015/04/15 23:59:49]

these feel familiar - should they be part of a harness?

+
+class EmptySurfaceFactoryClient : public SurfaceFactoryClient {
+ public:
+  void ReturnResources(const ReturnedResourceArray& resources) override {}
+};
+
+class SurfaceAggregatorPerfTest : public testing::Test {
+ public:
+  SurfaceAggregatorPerfTest()
+      : factory_(&manager_, &empty_client_),
+        timer_(kWarmupRuns,
+               base::TimeDelta::FromMilliseconds(kTimeLimitMillis),
+               kTimeCheckInterval) {
+    output_surface_ = FakeOutputSurface::CreateSoftware(
+        make_scoped_ptr(new SoftwareOutputDevice));
+    output_surface_->BindToClient(&output_surface_client_);
+    shared_bitmap_manager_.reset(new TestSharedBitmapManager);
+
+    resource_provider_ = ResourceProvider::Create(output_surface_.get(),
+                                                  shared_bitmap_manager_.get(),
+                                                  NULL, NULL, 0, false, 1);

[jamesr, 2015/04/15 23:59:49]

s/NULL/nullptr/g

+    aggregator_.reset(
+        new SurfaceAggregator(&manager_, resource_provider_.get()));
+  }
+
+  void RunTest(int num_surfaces,
+               int num_textures,
+               float opacity,
+               const std::string& name) {
+    for (int i = 1; i <= num_surfaces; i++) {
+      factory_.Create(SurfaceId(i));
+      scoped_ptr<RenderPass> pass(RenderPass::Create());
+      scoped_ptr<DelegatedFrameData> frame_data(new DelegatedFrameData);
+
+      SharedQuadState* sqs = pass->CreateAndAppendSharedQuadState();
+      for (int j = 0; j < num_textures; j++) {
+        TransferableResource resource;
+        resource.id = j;
+        resource.is_software = true;
+        frame_data->resource_list.push_back(resource);
+
+        TextureDrawQuad* quad =
+            pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
+        const gfx::Rect rect;

[jamesr, 2015/04/15 23:59:49]

we should prooobably make these nonempty since dropping empty quads is a pretty
obvious optimization that would trivialize at least part of this test

+        const gfx::Rect opaque_rect;
+        const gfx::Rect visible_rect;
+        bool needs_blending = false;
+        bool premultiplied_alpha = false;
+        const gfx::PointF uv_top_left;
+        const gfx::PointF uv_bottom_right;
+        SkColor background_color = SK_ColorGREEN;
+        const float vertex_opacity[4] = {0.f, 0.f, 1.f, 1.f};
+        bool flipped = false;
+        bool nearest_neighbor = false;
+        quad->SetAll(sqs, rect, opaque_rect, visible_rect, needs_blending, j,
+                     premultiplied_alpha, uv_top_left, uv_bottom_right,
+                     background_color, vertex_opacity, flipped,
+                     nearest_neighbor);
+      }
+      sqs = pass->CreateAndAppendSharedQuadState();
+      sqs->opacity = opacity;
+      if (i > 1) {
+        SurfaceDrawQuad* surface_quad =
+            pass->CreateAndAppendDrawQuad<SurfaceDrawQuad>();
+        surface_quad->SetNew(sqs, gfx::Rect(0, 0, 1, 1), gfx::Rect(0, 0, 1, 1),
+                             SurfaceId(i - 1));
+      }
+
+      frame_data->render_pass_list.push_back(pass.Pass());
+      scoped_ptr<CompositorFrame> frame(new CompositorFrame);
+      frame->delegated_frame_data = frame_data.Pass();
+      factory_.SubmitFrame(SurfaceId(i), frame.Pass(),
+                           SurfaceFactory::DrawCallback());
+    }
+
+    timer_.Reset();
+    do {
+      scoped_ptr<CompositorFrame> aggregated =
+          aggregator_->Aggregate(SurfaceId(num_surfaces));
+      timer_.NextLap();
+    } while (!timer_.HasTimeLimitExpired());
+
+    perf_test::PrintResult("aggregator_speed", "", name, timer_.LapsPerSecond(),
+                           "runs/s", true);
+
+    for (int i = 1; i <= num_surfaces; i++)
+      factory_.Destroy(SurfaceId(i));
+  }
+
+ protected:
+  SurfaceManager manager_;
+  EmptySurfaceFactoryClient empty_client_;
+  SurfaceFactory factory_;
+  FakeOutputSurfaceClient output_surface_client_;
+  scoped_ptr<OutputSurface> output_surface_;
+  scoped_ptr<SharedBitmapManager> shared_bitmap_manager_;
+  scoped_ptr<ResourceProvider> resource_provider_;
+  scoped_ptr<SurfaceAggregator> aggregator_;
+  LapTimer timer_;
+};
+
+TEST_F(SurfaceAggregatorPerfTest, ManySurfacesOpaque) {
+  RunTest(20, 100, 1.f, "many_surfaces_opaque");
+}
+
+TEST_F(SurfaceAggregatorPerfTest, ManySurfacesTransparent) {
+  RunTest(20, 100, .5f, "many_surfaces_transparent");
+}
+
+}  // namespace
+}  // namespace cc