cc: Add layer-based pixel tests.

cc/gl_renderer_pixeltest.cc

 // Copyright 2012 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/gl_renderer.h"
 
-#include "base/file_util.h"
-#include "base/path_service.h"
-#include "cc/compositor_frame_metadata.h"
 #include "cc/draw_quad.h"
-#include "cc/prioritized_resource_manager.h"
-#include "cc/resource_provider.h"
-#include "cc/test/paths.h"
-#include "cc/test/pixel_test_utils.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "ui/gfx/codec/png_codec.h"
-#include "ui/gl/gl_implementation.h"
-#include "webkit/gpu/context_provider_in_process.h"
-#include "webkit/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
+#include "cc/test/pixel_test.h"
 
 namespace cc {
 namespace {
 
-const int kDeviceViewportWidth = 200;
-const int kDeviceViewportHeight = 200;
-
-class FakeRendererClient : public RendererClient {
- public:
-  FakeRendererClient()
-  {
-  }
-
-  // RendererClient methods.
-  virtual gfx::Size DeviceViewportSize() const OVERRIDE {
-    return gfx::Size(kDeviceViewportWidth, kDeviceViewportHeight);
-  }
-  virtual const LayerTreeSettings& Settings() const OVERRIDE {
-    static LayerTreeSettings fake_settings;
-    return fake_settings;
-  }
-  virtual void DidLoseOutputSurface() OVERRIDE { }
-  virtual void OnSwapBuffersComplete() OVERRIDE { }
-  virtual void SetFullRootLayerDamage() OVERRIDE { }
-  virtual void SetManagedMemoryPolicy(const ManagedMemoryPolicy&) OVERRIDE {}
-  virtual void EnforceManagedMemoryPolicy(
-      const ManagedMemoryPolicy&) OVERRIDE {}
-  virtual bool HasImplThread() const OVERRIDE { return false; }
-  virtual bool ShouldClearRootRenderPass() const OVERRIDE { return true; }
-  virtual CompositorFrameMetadata MakeCompositorFrameMetadata() const
-      OVERRIDE { return CompositorFrameMetadata(); }
-};
-
-class GLRendererPixelTest : public testing::Test {
- protected:
-  GLRendererPixelTest() {}
-
-  virtual void SetUp() {
-    gfx::InitializeGLBindings(gfx::kGLImplementationOSMesaGL);
-    scoped_ptr<webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl>
-        context3d(
-            new webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl);
-    context3d->Initialize(WebKit::WebGraphicsContext3D::Attributes(), NULL);
-    output_surface_.reset(new OutputSurface(
-        context3d.PassAs<WebKit::WebGraphicsContext3D>()));
-    resource_provider_ = ResourceProvider::Create(output_surface_.get());
-    renderer_ = GLRenderer::Create(&fake_client_,
-                                   output_surface_.get(),
-                                   resource_provider_.get());
-
-    scoped_refptr<cc::ContextProvider> offscreen_contexts =
-        new webkit::gpu::ContextProviderInProcess(
-            webkit::gpu::ContextProviderInProcess::IN_PROCESS_COMMAND_BUFFER);
-    ASSERT_TRUE(offscreen_contexts->InitializeOnMainThread());
-    resource_provider_->SetOffscreenContextProvider(offscreen_contexts);
-  }
-
-  bool PixelsMatchReference(base::FilePath ref_file) {
-    gfx::Rect viewport_rect(kDeviceViewportWidth, kDeviceViewportHeight);
-
-    SkBitmap bitmap;
-    bitmap.setConfig(SkBitmap::kARGB_8888_Config,
-                     viewport_rect.width(), viewport_rect.height());
-    bitmap.allocPixels();
-    unsigned char* pixels = static_cast<unsigned char*>(bitmap.getPixels());
-    renderer_->GetFramebufferPixels(pixels, viewport_rect);
-
-    base::FilePath test_data_dir;
-    if (!PathService::Get(cc::DIR_TEST_DATA, &test_data_dir))
-      return false;
-
-    // To rebaseline:
-    //return WritePNGFile(bitmap, test_data_dir.Append(ref_file));
-
-    return IsSameAsPNGFile(bitmap, test_data_dir.Append(ref_file));
-  }
-
-  scoped_ptr<OutputSurface> output_surface_;
-  FakeRendererClient fake_client_;
-  scoped_ptr<ResourceProvider> resource_provider_;
-  scoped_ptr<GLRenderer> renderer_;
-};
+class GLRendererPixelTest : public PixelTest {};
 
 scoped_ptr<RenderPass> CreateTestRootRenderPass(RenderPass::Id id,
                                                 gfx::Rect rect) {
   scoped_ptr<RenderPass> pass = RenderPass::Create();
   const gfx::Rect output_rect = rect;
   const gfx::RectF damage_rect = rect;
   const gfx::Transform transform_to_root_target;
   pass->SetNew(id, output_rect, damage_rect, transform_to_root_target);
   return pass.Pass();
 }
@@ skipping 39 matching lines @@
                WebKit::WebFilterOperations(),   // foreground filters
                skia::RefPtr<SkImageFilter>(),   // foreground filter
                WebKit::WebFilterOperations());  // background filters
 
   return quad.PassAs<DrawQuad>();
 }
 
 
 #if !defined(OS_ANDROID)
 TEST_F(GLRendererPixelTest, simpleGreenRect) {
-  gfx::Rect rect(kDeviceViewportWidth, kDeviceViewportHeight);
+  gfx::Rect rect(device_viewport_size_);
 
   RenderPass::Id id(1, 1);
   scoped_ptr<RenderPass> pass = CreateTestRootRenderPass(id, rect);
 
   gfx::Transform content_to_target_transform;
   scoped_ptr<SharedQuadState> shared_state =
       CreateTestSharedQuadState(content_to_target_transform, rect);
 
   scoped_ptr<SolidColorDrawQuad> color_quad = SolidColorDrawQuad::Create();
   color_quad->SetNew(shared_state.get(), rect, SK_ColorGREEN);
 
   pass->quad_list.push_back(color_quad.PassAs<DrawQuad>());
 
   RenderPassList pass_list;
   pass_list.push_back(pass.Pass());
 
   renderer_->DrawFrame(pass_list);
 
   EXPECT_TRUE(PixelsMatchReference(
       base::FilePath(FILE_PATH_LITERAL("green.png"))));
 }
 
 TEST_F(GLRendererPixelTest, RenderPassChangesSize) {
-  gfx::Rect viewport_rect(kDeviceViewportWidth, kDeviceViewportHeight);
+  gfx::Rect viewport_rect(device_viewport_size_);
 
   RenderPass::Id root_pass_id(1, 1);
   scoped_ptr<RenderPass> root_pass =
       CreateTestRootRenderPass(root_pass_id, viewport_rect);
 
   RenderPass::Id child_pass_id(2, 2);
-  gfx::Rect pass_rect(kDeviceViewportWidth, kDeviceViewportHeight);
+  gfx::Rect pass_rect(device_viewport_size_);
   gfx::Transform transform_to_root;
   scoped_ptr<RenderPass> child_pass =
       CreateTestRenderPass(child_pass_id, pass_rect, transform_to_root);
 
   gfx::Transform content_to_target_transform;
   scoped_ptr<SharedQuadState> shared_state =
       CreateTestSharedQuadState(content_to_target_transform, viewport_rect);
 
   scoped_ptr<SolidColorDrawQuad> blue = SolidColorDrawQuad::Create();
   blue->SetNew(shared_state.get(),
                gfx::Rect(0,
                          0,
-                         kDeviceViewportWidth / 2,
-                         kDeviceViewportHeight),
+                         device_viewport_size_.width() / 2,
+                         device_viewport_size_.height()),
                SK_ColorBLUE);
   scoped_ptr<SolidColorDrawQuad> yellow = SolidColorDrawQuad::Create();
   yellow->SetNew(shared_state.get(),
-               gfx::Rect(kDeviceViewportWidth / 2,
-                         0,
-                         kDeviceViewportWidth / 2,
-                         kDeviceViewportHeight),
+                 gfx::Rect(device_viewport_size_.width() / 2,
+                           0,
+                           device_viewport_size_.width() / 2,
+                           device_viewport_size_.height()),
                  SK_ColorYELLOW);
 
   child_pass->quad_list.push_back(blue.PassAs<DrawQuad>());
   child_pass->quad_list.push_back(yellow.PassAs<DrawQuad>());
 
   scoped_ptr<SharedQuadState> pass_shared_state =
       CreateTestSharedQuadState(gfx::Transform(), pass_rect);
   root_pass->quad_list.push_back(
       CreateTestRenderPassDrawQuad(pass_shared_state.get(),
                                    pass_rect,
                                    child_pass_id));
 
   RenderPassList pass_list;
   pass_list.push_back(child_pass.Pass());
   pass_list.push_back(root_pass.Pass());
 
   renderer_->SetEnlargePassTextureAmountForTesting(gfx::Vector2d(50, 75));
   renderer_->DecideRenderPassAllocationsForFrame(pass_list);
   renderer_->DrawFrame(pass_list);
 
   EXPECT_TRUE(PixelsMatchReference(
       base::FilePath(FILE_PATH_LITERAL("blue_yellow.png"))));
 }
 
 class GLRendererPixelTestWithBackgroundFilter : public GLRendererPixelTest {
  protected:
   void DrawFrame() {
-    gfx::Rect device_viewport_rect(kDeviceViewportWidth, kDeviceViewportHeight);
+    gfx::Rect device_viewport_rect(device_viewport_size_);
 
     RenderPass::Id root_id(1, 1);
     scoped_ptr<RenderPass> root_pass =
         CreateTestRootRenderPass(root_id, device_viewport_rect);
     root_pass->has_transparent_background = false;
 
     gfx::Transform identity_content_to_target_transform;
 
     RenderPass::Id filter_pass_id(2, 1);
     gfx::Transform transform_to_root;
@@ skipping 29 matching lines @@
           0,  // mask_resource_id
           filter_pass_content_rect_,  // contents_changed_since_last_frame
           gfx::RectF(), // mask_uv_rect
           WebKit::WebFilterOperations(),  // filters
           skia::RefPtr<SkImageFilter>(),  // filter
           background_filters_);
       root_pass->quad_list.push_back(filter_pass_quad.PassAs<DrawQuad>());
       root_pass->shared_quad_state_list.push_back(shared_state.Pass());
     }
 
-    const int kColumnWidth = kDeviceViewportWidth / 3;
+    const int kColumnWidth = device_viewport_rect.width() / 3;
 
     gfx::Rect left_rect = gfx::Rect(0, 0, kColumnWidth, 20);
-    for (int i = 0; left_rect.y() < kDeviceViewportHeight; ++i) {
+    for (int i = 0; left_rect.y() < device_viewport_rect.height(); ++i) {
       scoped_ptr<SharedQuadState> shared_state =
           CreateTestSharedQuadState(identity_content_to_target_transform,
                                     left_rect);
       scoped_ptr<SolidColorDrawQuad> color_quad = SolidColorDrawQuad::Create();
       color_quad->SetNew(shared_state.get(), left_rect, SK_ColorGREEN);
       root_pass->quad_list.push_back(color_quad.PassAs<DrawQuad>());
       root_pass->shared_quad_state_list.push_back(shared_state.Pass());
       left_rect += gfx::Vector2d(0, left_rect.height() + 1);
     }
 
     gfx::Rect middle_rect = gfx::Rect(kColumnWidth+1, 0, kColumnWidth, 20);
-    for (int i = 0; middle_rect.y() < kDeviceViewportHeight; ++i) {
+    for (int i = 0; middle_rect.y() < device_viewport_rect.height(); ++i) {
       scoped_ptr<SharedQuadState> shared_state =
           CreateTestSharedQuadState(identity_content_to_target_transform,
                                     middle_rect);
       scoped_ptr<SolidColorDrawQuad> color_quad = SolidColorDrawQuad::Create();
       color_quad->SetNew(shared_state.get(), middle_rect, SK_ColorRED);
       root_pass->quad_list.push_back(color_quad.PassAs<DrawQuad>());
       root_pass->shared_quad_state_list.push_back(shared_state.Pass());
       middle_rect += gfx::Vector2d(0, middle_rect.height() + 1);
     }
 
     gfx::Rect right_rect = gfx::Rect((kColumnWidth+1)*2, 0, kColumnWidth, 20);
-    for (int i = 0; right_rect.y() < kDeviceViewportHeight; ++i) {
+    for (int i = 0; right_rect.y() < device_viewport_rect.height(); ++i) {
       scoped_ptr<SharedQuadState> shared_state =
           CreateTestSharedQuadState(identity_content_to_target_transform,
                                     right_rect);
       scoped_ptr<SolidColorDrawQuad> color_quad = SolidColorDrawQuad::Create();
       color_quad->SetNew(shared_state.get(), right_rect, SK_ColorBLUE);
       root_pass->quad_list.push_back(color_quad.PassAs<DrawQuad>());
       root_pass->shared_quad_state_list.push_back(shared_state.Pass());
       right_rect += gfx::Vector2d(0, right_rect.height() + 1);
     }
 
@@ skipping 18 matching lines @@
 
   WebKit::WebFilterOperations background_filters_;
   gfx::Transform filter_pass_to_target_transform_;
   gfx::Rect filter_pass_content_rect_;
 };
 
 TEST_F(GLRendererPixelTestWithBackgroundFilter, InvertFilter) {
   background_filters_.append(
       WebKit::WebFilterOperation::createInvertFilter(1.f));
 
-  filter_pass_content_rect_ =
-      gfx::Rect(kDeviceViewportWidth, kDeviceViewportHeight);
+  filter_pass_content_rect_ = gfx::Rect(device_viewport_size_);
   filter_pass_content_rect_.Inset(12, 14, 16, 18);
 
   DrawFrame();
   EXPECT_TRUE(PixelsMatchReference(
       base::FilePath(FILE_PATH_LITERAL("background_filter.png"))));
 }
 #endif
 
 }  // namespace
 }  // namespace cc