cc/layers/render_surface_impl_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/layers/render_surface_impl.h"
   6
   7 #include "cc/test/layer_test_common.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9
  10 namespace cc {
  11 namespace {
  12
  13 TEST(RenderSurfaceLayerImplTest, Occlusion) {
  14   gfx::Size layer_size(1000, 1000);
  15   gfx::Size viewport_size(1000, 1000);
  16
  17   LayerTestCommon::LayerImplTest impl;
  18
  19   LayerImpl* owning_layer_impl = impl.AddChildToRoot<LayerImpl>();
  20   owning_layer_impl->SetBounds(layer_size);
  21   owning_layer_impl->SetDrawsContent(true);
  22   owning_layer_impl->SetHasRenderSurface(true);
  23
  24   impl.CalcDrawProps(viewport_size);
  25
  26   RenderSurfaceImpl* render_surface_impl = owning_layer_impl->render_surface();
  27   ASSERT_TRUE(render_surface_impl);
  28
  29   {
  30     SCOPED_TRACE("No occlusion");
  31     gfx::Rect occluded;
  32     impl.AppendSurfaceQuadsWithOcclusion(render_surface_impl, occluded);
  33
  34     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(),
  35                                                  gfx::Rect(layer_size));
  36     EXPECT_EQ(1u, impl.quad_list().size());
  37   }
  38
  39   {
  40     SCOPED_TRACE("Full occlusion");
  41     gfx::Rect occluded(owning_layer_impl->visible_layer_rect());
  42     impl.AppendSurfaceQuadsWithOcclusion(render_surface_impl, occluded);
  43
  44     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(), gfx::Rect());
  45     EXPECT_EQ(impl.quad_list().size(), 0u);
  46   }
  47
  48   {
  49     SCOPED_TRACE("Partial occlusion");
  50     gfx::Rect occluded(200, 0, 800, 1000);
  51     impl.AppendSurfaceQuadsWithOcclusion(render_surface_impl, occluded);
  52
  53     size_t partially_occluded_count = 0;
  54     LayerTestCommon::VerifyQuadsAreOccluded(
  55         impl.quad_list(), occluded, &partially_occluded_count);
  56     // The layer outputs one quad, which is partially occluded.
  57     EXPECT_EQ(1u, impl.quad_list().size());
  58     EXPECT_EQ(1u, partially_occluded_count);
  59   }
  60 }
  61
  62 }  // namespace
  63 }  // namespace cc