cc/test/layer_test_common.cc

   1 // Copyright 2012 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/test/layer_test_common.h"
   6
   7 #include "cc/base/math_util.h"
   8 #include "cc/base/region.h"
   9 #include "cc/layers/append_quads_data.h"
  10 #include "cc/quads/draw_quad.h"
  11 #include "cc/quads/render_pass.h"
  12 #include "cc/test/fake_output_surface.h"
  13 #include "cc/test/mock_occlusion_tracker.h"
  14 #include "cc/trees/layer_tree_host_common.h"
  15 #include "testing/gtest/include/gtest/gtest.h"
  16 #include "ui/gfx/geometry/point_conversions.h"
  17 #include "ui/gfx/geometry/rect.h"
  18 #include "ui/gfx/geometry/rect_conversions.h"
  19 #include "ui/gfx/geometry/size_conversions.h"
  20
  21 namespace cc {
  22
  23 // Align with expected and actual output.
  24 const char* LayerTestCommon::quad_string = "    Quad: ";
  25
  26 static bool CanRectFBeSafelyRoundedToRect(const gfx::RectF& r) {
  27   // Ensure that range of float values is not beyond integer range.
  28   if (!r.IsExpressibleAsRect())
  29     return false;
  30
  31   // Ensure that the values are actually integers.
  32   if (gfx::ToFlooredPoint(r.origin()) == r.origin() &&
  33       gfx::ToFlooredSize(r.size()) == r.size())
  34     return true;
  35
  36   return false;
  37 }
  38
  39 void LayerTestCommon::VerifyQuadsExactlyCoverRect(const QuadList& quads,
  40                                                   const gfx::Rect& rect) {
  41   Region remaining = rect;
  42
  43   for (auto iter = quads.cbegin(); iter != quads.cend(); ++iter) {
  44     gfx::RectF quad_rectf = MathUtil::MapClippedRect(
  45         iter->shared_quad_state->quad_to_target_transform,
  46         gfx::RectF(iter->rect));
  47
  48     // Before testing for exact coverage in the integer world, assert that
  49     // rounding will not round the rect incorrectly.
  50     ASSERT_TRUE(CanRectFBeSafelyRoundedToRect(quad_rectf));
  51
  52     gfx::Rect quad_rect = gfx::ToEnclosingRect(quad_rectf);
  53
  54     EXPECT_TRUE(rect.Contains(quad_rect)) << quad_string << iter.index()
  55                                           << " rect: " << rect.ToString()
  56                                           << " quad: " << quad_rect.ToString();
  57     EXPECT_TRUE(remaining.Contains(quad_rect))
  58         << quad_string << iter.index() << " remaining: " << remaining.ToString()
  59         << " quad: " << quad_rect.ToString();
  60     remaining.Subtract(quad_rect);
  61   }
  62
  63   EXPECT_TRUE(remaining.IsEmpty());
  64 }
  65
  66 // static
  67 void LayerTestCommon::VerifyQuadsAreOccluded(const QuadList& quads,
  68                                              const gfx::Rect& occluded,
  69                                              size_t* partially_occluded_count) {
  70   // No quad should exist if it's fully occluded.
  71   for (const auto& quad : quads) {
  72     gfx::Rect target_visible_rect = MathUtil::MapEnclosingClippedRect(
  73         quad->shared_quad_state->quad_to_target_transform, quad->visible_rect);
  74     EXPECT_FALSE(occluded.Contains(target_visible_rect));
  75   }
  76
  77   // Quads that are fully occluded on one axis only should be shrunken.
  78   for (const auto& quad : quads) {
  79     gfx::Rect target_rect = MathUtil::MapEnclosingClippedRect(
  80         quad->shared_quad_state->quad_to_target_transform, quad->rect);
  81     if (!quad->shared_quad_state->quad_to_target_transform
  82              .IsIdentityOrIntegerTranslation()) {
  83       DCHECK(quad->shared_quad_state->quad_to_target_transform
  84                  .IsPositiveScaleOrTranslation())
  85           << quad->shared_quad_state->quad_to_target_transform.ToString();
  86       gfx::RectF target_rectf = MathUtil::MapClippedRect(
  87           quad->shared_quad_state->quad_to_target_transform, quad->rect);
  88       // Scale transforms allowed, as long as the final transformed rect
  89       // ends up on integer boundaries for ease of testing.
  90       DCHECK_EQ(target_rectf.ToString(), gfx::RectF(target_rect).ToString());
  91     }
  92     gfx::Rect target_visible_rect = MathUtil::MapEnclosingClippedRect(
  93         quad->shared_quad_state->quad_to_target_transform, quad->visible_rect);
  94
  95     bool fully_occluded_horizontal = target_rect.x() >= occluded.x() &&
  96                                      target_rect.right() <= occluded.right();
  97     bool fully_occluded_vertical = target_rect.y() >= occluded.y() &&
  98                                    target_rect.bottom() <= occluded.bottom();
  99     bool should_be_occluded =
 100         target_rect.Intersects(occluded) &&
 101         (fully_occluded_vertical || fully_occluded_horizontal);
 102     if (!should_be_occluded) {
 103       EXPECT_EQ(quad->rect.ToString(), quad->visible_rect.ToString());
 104     } else {
 105       EXPECT_NE(quad->rect.ToString(), quad->visible_rect.ToString());
 106       EXPECT_TRUE(quad->rect.Contains(quad->visible_rect));
 107       ++(*partially_occluded_count);
 108     }
 109   }
 110 }
 111
 112 LayerTestCommon::LayerImplTest::LayerImplTest()
 113     : client_(FakeLayerTreeHostClient::DIRECT_3D),
 114       host_(FakeLayerTreeHost::Create(&client_, &task_graph_runner_)),
 115       root_layer_impl_(LayerImpl::Create(host_->host_impl()->active_tree(), 1)),
 116       render_pass_(RenderPass::Create()),
 117       layer_impl_id_(2) {
 118   root_layer_impl_->SetHasRenderSurface(true);
 119   scoped_ptr<FakeOutputSurface> output_surface = FakeOutputSurface::Create3d();
 120   host_->host_impl()->InitializeRenderer(FakeOutputSurface::Create3d());
 121 }
 122
 123 LayerTestCommon::LayerImplTest::~LayerImplTest() {}
 124
 125 void LayerTestCommon::LayerImplTest::CalcDrawProps(
 126     const gfx::Size& viewport_size) {
 127   LayerImplList layer_list;
 128   LayerTreeHostCommon::CalcDrawPropsImplInputsForTesting inputs(
 129       root_layer_impl_.get(), viewport_size, &layer_list);
 130   LayerTreeHostCommon::CalculateDrawProperties(&inputs);
 131 }
 132
 133 void LayerTestCommon::LayerImplTest::AppendQuadsWithOcclusion(
 134     LayerImpl* layer_impl,
 135     const gfx::Rect& occluded) {
 136   AppendQuadsData data;
 137
 138   render_pass_->quad_list.clear();
 139   render_pass_->shared_quad_state_list.clear();
 140
 141   Occlusion occlusion(layer_impl->draw_transform(),
 142                       SimpleEnclosedRegion(occluded),
 143                       SimpleEnclosedRegion());
 144   layer_impl->draw_properties().occlusion_in_content_space = occlusion;
 145
 146   layer_impl->WillDraw(DRAW_MODE_HARDWARE, resource_provider());
 147   layer_impl->AppendQuads(render_pass_.get(), &data);
 148   layer_impl->DidDraw(resource_provider());
 149 }
 150
 151 void LayerTestCommon::LayerImplTest::AppendQuadsForPassWithOcclusion(
 152     LayerImpl* layer_impl,
 153     RenderPass* given_render_pass,
 154     const gfx::Rect& occluded) {
 155   AppendQuadsData data;
 156
 157   given_render_pass->quad_list.clear();
 158   given_render_pass->shared_quad_state_list.clear();
 159
 160   Occlusion occlusion(layer_impl->draw_transform(),
 161                       SimpleEnclosedRegion(occluded),
 162                       SimpleEnclosedRegion());
 163   layer_impl->draw_properties().occlusion_in_content_space = occlusion;
 164
 165   layer_impl->WillDraw(DRAW_MODE_HARDWARE, resource_provider());
 166   layer_impl->AppendQuads(given_render_pass, &data);
 167   layer_impl->DidDraw(resource_provider());
 168 }
 169
 170 void LayerTestCommon::LayerImplTest::AppendSurfaceQuadsWithOcclusion(
 171     RenderSurfaceImpl* surface_impl,
 172     const gfx::Rect& occluded) {
 173   AppendQuadsData data;
 174
 175   render_pass_->quad_list.clear();
 176   render_pass_->shared_quad_state_list.clear();
 177
 178   surface_impl->AppendQuads(
 179       render_pass_.get(), gfx::Transform(),
 180       Occlusion(gfx::Transform(), SimpleEnclosedRegion(occluded),
 181                 SimpleEnclosedRegion()),
 182       SK_ColorBLACK, 1.f, nullptr, &data, RenderPassId(1, 1));
 183 }
 184
 185 }  // namespace cc