cc: Implement DelegatingRender::drawFrame() method.

cc/delegating_renderer_unittest.cc

Index: cc/delegating_renderer_unittest.cc
diff --git a/cc/delegating_renderer_unittest.cc b/cc/delegating_renderer_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..de96046809c4f106971b7564b27193f2293657f0
--- /dev/null
+++ b/cc/delegating_renderer_unittest.cc
@@ -0,0 +1,135 @@
+// Copyright 2013 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/delegating_renderer.h"
+
+#include "cc/test/fake_output_surface.h"
+#include "cc/test/layer_tree_test_common.h"
+#include "cc/test/render_pass_test_common.h"
+#include "cc/test/render_pass_test_utils.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace cc {
+
+class DelegatingRendererTest : public ThreadedTest {
+ public:
+  DelegatingRendererTest() : ThreadedTest(), output_surface_(NULL) {}
+  virtual ~DelegatingRendererTest() {}
+
+  virtual scoped_ptr<OutputSurface> createOutputSurface() OVERRIDE {
+    scoped_ptr<FakeWebGraphicsContext3D> context3d =
+        FakeWebGraphicsContext3D::Create(
+            WebKit::WebGraphicsContext3D::Attributes());
+    context3d_ = context3d.get();
+    scoped_ptr<FakeOutputSurface> output_surface =
+        FakeOutputSurface::CreateDelegating3d(
+            context3d.PassAs<WebKit::WebGraphicsContext3D>());
+    output_surface_ = output_surface.get();
+    return output_surface.PassAs<OutputSurface>();
+  }
+
+ protected:
+  FakeWebGraphicsContext3D* context3d_;
+  FakeOutputSurface* output_surface_;
+};
+
+class DelegatingRendererTestDraw : public DelegatingRendererTest {
+ public:
+  virtual void beginTest() OVERRIDE {
+    m_layerTreeHost->setPageScaleFactorAndLimits(1.f, 0.5f, 4.f);
+    postSetNeedsCommitToMainThread();
+  }
+
+  virtual void afterTest() OVERRIDE {}
+
+  virtual bool prepareToDrawOnThread(
+      LayerTreeHostImpl*, LayerTreeHostImpl::FrameData& frame, bool result)
+      OVERRIDE {
+    EXPECT_EQ(0u, output_surface_->num_sent_frames());
+
+    CompositorFrame& last_frame = output_surface_->last_sent_frame();
+    EXPECT_FALSE(last_frame.delegated_frame_data);
+    EXPECT_FALSE(last_frame.gl_frame_data);
+    EXPECT_EQ(0.f, last_frame.metadata.min_page_scale_factor);
+    EXPECT_EQ(0.f, last_frame.metadata.max_page_scale_factor);
+    return true;
+  }
+
+  virtual void drawLayersOnThread(LayerTreeHostImpl* host_impl) OVERRIDE {
+    EXPECT_EQ(1u, output_surface_->num_sent_frames());
+
+    CompositorFrame& last_frame = output_surface_->last_sent_frame();
+    ASSERT_TRUE(last_frame.delegated_frame_data);
+    EXPECT_FALSE(last_frame.gl_frame_data);
+    EXPECT_EQ(
+        host_impl->deviceViewportSize().ToString(),
+        last_frame.delegated_frame_data->size.ToString());
+    EXPECT_EQ(0.5f, last_frame.metadata.min_page_scale_factor);
+    EXPECT_EQ(4.f, last_frame.metadata.max_page_scale_factor);
+
+    EXPECT_EQ(
+        0u, last_frame.delegated_frame_data->resource_list.resources.size());
+    EXPECT_EQ(1u, last_frame.delegated_frame_data->render_pass_list.size());
+
+    endTest();
+  }
+};
+
+SINGLE_AND_MULTI_THREAD_TEST_F(DelegatingRendererTestDraw)
+
+class DelegatingRendererTestResources : public DelegatingRendererTest {
+ public:
+  virtual void beginTest() OVERRIDE {
+    postSetNeedsCommitToMainThread();
+  }
+
+  virtual void afterTest() OVERRIDE {}
+
+  virtual bool prepareToDrawOnThread(
+      LayerTreeHostImpl* host_impl,
+      LayerTreeHostImpl::FrameData& frame,
+      bool result) OVERRIDE {
+
+    frame.renderPasses.clear();
+    frame.renderPassesById.clear();
+
+    TestRenderPass* child_pass = addRenderPass(
+        frame.renderPasses,
+        RenderPass::Id(2, 1),
+        gfx::Rect(3, 3, 10, 10),
+        gfx::Transform());
+    child_pass->AppendOneOfEveryQuadType(
+        host_impl->resourceProvider(), RenderPass::Id(0, 0));
+
+    TestRenderPass* pass = addRenderPass(
+        frame.renderPasses,
+        RenderPass::Id(1, 1),
+        gfx::Rect(3, 3, 10, 10),
+        gfx::Transform());
+    pass->AppendOneOfEveryQuadType(
+        host_impl->resourceProvider(), child_pass->id);
+    return true;
+  }
+
+  virtual void drawLayersOnThread(LayerTreeHostImpl* host_impl) OVERRIDE {
+    EXPECT_EQ(1u, output_surface_->num_sent_frames());
+
+    CompositorFrame& last_frame = output_surface_->last_sent_frame();
+    ASSERT_TRUE(last_frame.delegated_frame_data);
+
+    EXPECT_EQ(2u, last_frame.delegated_frame_data->render_pass_list.size());
+    // Each render pass has 7 resources in it. And the root render pass has a
+    // mask resource used when drawing the child render pass. The number 7 may
+    // change if AppendOneOfEveryQuadType is updated, and the value here should
+    // be updated accordingly.
+    EXPECT_EQ(
+        15u, last_frame.delegated_frame_data->resource_list.resources.size());
+
+    endTest();
+  }
+};
+
+SINGLE_AND_MULTI_THREAD_TEST_F(DelegatingRendererTestResources)
+
+}  // namespace cc