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->SetContentBounds(layer_size);
  22   owning_layer_impl->SetDrawsContent(true);
  23   owning_layer_impl->SetHasRenderSurface(true);
  24
  25   impl.CalcDrawProps(viewport_size);
  26
  27   RenderSurfaceImpl* render_surface_impl = owning_layer_impl->render_surface();
  28   ASSERT_TRUE(render_surface_impl);
  29
  30   {
  31     SCOPED_TRACE("No occlusion");
  32     gfx::Rect occluded;
  33     impl.AppendSurfaceQuadsWithOcclusion(render_surface_impl, occluded);
  34
  35     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(),
  36                                                  gfx::Rect(layer_size));
  37     EXPECT_EQ(1u, impl.quad_list().size());
  38   }
  39
  40   {
  41     SCOPED_TRACE("Full occlusion");
  42     gfx::Rect occluded(owning_layer_impl->visible_content_rect());
  43     impl.AppendSurfaceQuadsWithOcclusion(render_surface_impl, occluded);
  44
  45     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(), gfx::Rect());
  46     EXPECT_EQ(impl.quad_list().size(), 0u);
  47   }
  48
  49   {
  50     SCOPED_TRACE("Partial occlusion");
  51     gfx::Rect occluded(200, 0, 800, 1000);
  52     impl.AppendSurfaceQuadsWithOcclusion(render_surface_impl, occluded);
  53
  54     size_t partially_occluded_count = 0;
  55     LayerTestCommon::VerifyQuadsAreOccluded(
  56         impl.quad_list(), occluded, &partially_occluded_count);
  57     // The layer outputs one quad, which is partially occluded.
  58     EXPECT_EQ(1u, impl.quad_list().size());
  59     EXPECT_EQ(1u, partially_occluded_count);
  60   }
  61 }
  62
  63 }  // namespace
  64 }  // namespace cc