cc: Support anti-aliasing for solid color layers.

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"
@@ skipping 116 matching lines @@
   gfx::Rect rect(0, 0, 200, 200);
 
   RenderPass::Id id(1, 1);
   scoped_ptr<RenderPass> pass = CreateTestRenderPass(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);
+  color_quad->SetNew(shared_state.get(), rect, SK_ColorGREEN,
+                     false, false, false, false);
 
   pass->quad_list.append(color_quad.PassAs<DrawQuad>());
 
   RenderPassList pass_list;
   pass_list.push_back(pass.get());
   RenderPassIdHashMap pass_map;
   pass_map.add(id, pass.PassAs<RenderPass>());
 
   renderer_->drawFrame(pass_list, pass_map);
 
@@ skipping 11 matching lines @@
   RenderPass::Id child_pass_id(2, 2);
   gfx::Rect pass_rect(200, 200);
   scoped_ptr<RenderPass> child_pass =
       CreateTestRenderPass(child_pass_id, pass_rect);
 
   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, 100, 200), SK_ColorBLUE);
+  blue->SetNew(shared_state.get(), gfx::Rect(0, 0, 100, 200), SK_ColorBLUE,
+               false, false, false, false);
   scoped_ptr<SolidColorDrawQuad> yellow = SolidColorDrawQuad::Create();
-  yellow->SetNew(shared_state.get(), gfx::Rect(100, 0, 100, 200), SK_ColorYELLOW);
+  yellow->SetNew(shared_state.get(), gfx::Rect(100, 0, 100, 200), SK_ColorYELLOW,
+                 false, false, false, false);
 
   child_pass->quad_list.append(blue.PassAs<DrawQuad>());
   child_pass->quad_list.append(yellow.PassAs<DrawQuad>());
 
   scoped_ptr<SharedQuadState> pass_shared_state =
       CreateTestSharedQuadState(gfx::Transform(), pass_rect);
   root_pass->quad_list.append(
       CreateTestRenderPassDrawQuad(pass_shared_state.get(),
                                    pass_rect,
                                    child_pass_id));
 
   RenderPassList pass_list;
   pass_list.push_back(child_pass.get());
   pass_list.push_back(root_pass.get());
 
   RenderPassIdHashMap pass_map;
   pass_map.add(child_pass_id, child_pass.Pass());
   pass_map.add(root_pass_id, root_pass.Pass());
 
   renderer_->setEnlargePassTextureAmountForTesting(gfx::Vector2d(50, 75));
   renderer_->decideRenderPassAllocationsForFrame(pass_list);
   renderer_->drawFrame(pass_list, pass_map);
 
   EXPECT_TRUE(PixelsMatchReference(
       FilePath(FILE_PATH_LITERAL("blue_yellow.png")), viewport_rect));
 }
+
+TEST_F(GLRendererPixelTest, AntiAliasing) {
+  gfx::Rect rect(0, 0, 200, 200);
+
+  RenderPass::Id id(1, 1);
+  scoped_ptr<RenderPass> pass = CreateTestRenderPass(id, rect);
+
+  gfx::Transform red_content_to_target_transform;
+  red_content_to_target_transform.Rotate(10);
+  scoped_ptr<SharedQuadState> red_shared_state =
+      CreateTestSharedQuadState(red_content_to_target_transform, rect);
+
+  scoped_ptr<SolidColorDrawQuad> red = SolidColorDrawQuad::Create();
+  red->SetNew(red_shared_state.get(), rect, SK_ColorRED,
+              true, true, true, true);
+
+  pass->quad_list.append(red.PassAs<DrawQuad>());
+
+  gfx::Transform yellow_content_to_target_transform;
+  yellow_content_to_target_transform.Rotate(5);
+  scoped_ptr<SharedQuadState> yellow_shared_state =
+      CreateTestSharedQuadState(yellow_content_to_target_transform, rect);
+
+  scoped_ptr<SolidColorDrawQuad> yellow = SolidColorDrawQuad::Create();
+  yellow->SetNew(yellow_shared_state.get(), rect, SK_ColorYELLOW,
+                 true, true, true, true);
+
+  pass->quad_list.append(yellow.PassAs<DrawQuad>());
+
+  gfx::Transform blue_content_to_target_transform;
+  scoped_ptr<SharedQuadState> blue_shared_state =
+      CreateTestSharedQuadState(blue_content_to_target_transform, rect);
+
+  scoped_ptr<SolidColorDrawQuad> blue = SolidColorDrawQuad::Create();
+  blue->SetNew(blue_shared_state.get(), rect, SK_ColorBLUE,
+               false, false, false, false);
+
+  pass->quad_list.append(blue.PassAs<DrawQuad>());
+
+  RenderPassList pass_list;
+  pass_list.push_back(pass.get());
+  RenderPassIdHashMap pass_map;
+  pass_map.add(id, pass.PassAs<RenderPass>());
+
+  renderer_->drawFrame(pass_list, pass_map);
+
+  EXPECT_TRUE(
+      PixelsMatchReference(FilePath(FILE_PATH_LITERAL("anti_aliasing.png")),
+                           rect));
+}
 #endif
 
 }  // namespace
 }  // namespace cc