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 =
  45         MathUtil::MapClippedRect(iter->quadTransform(), gfx::RectF(iter->rect));
  46
  47     // Before testing for exact coverage in the integer world, assert that
  48     // rounding will not round the rect incorrectly.
  49     ASSERT_TRUE(CanRectFBeSafelyRoundedToRect(quad_rectf));
  50
  51     gfx::Rect quad_rect = gfx::ToEnclosingRect(quad_rectf);
  52
  53     EXPECT_TRUE(rect.Contains(quad_rect)) << quad_string << iter.index()
  54                                           << " rect: " << rect.ToString()
  55                                           << " quad: " << quad_rect.ToString();
  56     EXPECT_TRUE(remaining.Contains(quad_rect))
  57         << quad_string << iter.index() << " remaining: " << remaining.ToString()
  58         << " quad: " << quad_rect.ToString();
  59     remaining.Subtract(quad_rect);
  60   }
  61
  62   EXPECT_TRUE(remaining.IsEmpty());
  63 }
  64
  65 // static
  66 void LayerTestCommon::VerifyQuadsAreOccluded(const QuadList& quads,
  67                                              const gfx::Rect& occluded,
  68                                              size_t* partially_occluded_count) {
  69   // No quad should exist if it's fully occluded.
  70   for (const auto& quad : quads) {
  71     gfx::Rect target_visible_rect = MathUtil::MapEnclosingClippedRect(
  72         quad->quadTransform(), quad->visible_rect);
  73     EXPECT_FALSE(occluded.Contains(target_visible_rect));
  74   }
  75
  76   // Quads that are fully occluded on one axis only should be shrunken.
  77   for (const auto& quad : quads) {
  78     gfx::Rect target_rect =
  79         MathUtil::MapEnclosingClippedRect(quad->quadTransform(), quad->rect);
  80     if (!quad->quadTransform().IsIdentityOrIntegerTranslation()) {
  81       DCHECK(quad->quadTransform().IsPositiveScaleOrTranslation())
  82           << quad->quadTransform().ToString();
  83       gfx::RectF target_rectf =
  84           MathUtil::MapClippedRect(quad->quadTransform(), quad->rect);
  85       // Scale transforms allowed, as long as the final transformed rect
  86       // ends up on integer boundaries for ease of testing.
  87       DCHECK_EQ(target_rectf.ToString(), gfx::RectF(target_rect).ToString());
  88     }
  89     gfx::Rect target_visible_rect = MathUtil::MapEnclosingClippedRect(
  90         quad->quadTransform(), quad->visible_rect);
  91
  92     bool fully_occluded_horizontal = target_rect.x() >= occluded.x() &&
  93                                      target_rect.right() <= occluded.right();
  94     bool fully_occluded_vertical = target_rect.y() >= occluded.y() &&
  95                                    target_rect.bottom() <= occluded.bottom();
  96     bool should_be_occluded =
  97         target_rect.Intersects(occluded) &&
  98         (fully_occluded_vertical || fully_occluded_horizontal);
  99     if (!should_be_occluded) {
 100       EXPECT_EQ(quad->rect.ToString(), quad->visible_rect.ToString());
 101     } else {
 102       EXPECT_NE(quad->rect.ToString(), quad->visible_rect.ToString());
 103       EXPECT_TRUE(quad->rect.Contains(quad->visible_rect));
 104       ++(*partially_occluded_count);
 105     }
 106   }
 107 }
 108
 109 LayerTestCommon::LayerImplTest::LayerImplTest()
 110     : client_(FakeLayerTreeHostClient::DIRECT_3D),
 111       host_(FakeLayerTreeHost::Create(&client_)),
 112       root_layer_impl_(LayerImpl::Create(host_->host_impl()->active_tree(), 1)),
 113       render_pass_(RenderPass::Create()) {
 114   root_layer_impl_->SetHasRenderSurface(true);
 115   scoped_ptr<FakeOutputSurface> output_surface = FakeOutputSurface::Create3d();
 116   host_->host_impl()->InitializeRenderer(FakeOutputSurface::Create3d());
 117 }
 118
 119 LayerTestCommon::LayerImplTest::~LayerImplTest() {}
 120
 121 void LayerTestCommon::LayerImplTest::CalcDrawProps(
 122     const gfx::Size& viewport_size) {
 123   LayerImplList layer_list;
 124   LayerTreeHostCommon::CalcDrawPropsImplInputsForTesting inputs(
 125       root_layer_impl_.get(), viewport_size, &layer_list);
 126   LayerTreeHostCommon::CalculateDrawProperties(&inputs);
 127 }
 128
 129 void LayerTestCommon::LayerImplTest::AppendQuadsWithOcclusion(
 130     LayerImpl* layer_impl,
 131     const gfx::Rect& occluded) {
 132   AppendQuadsData data;
 133
 134   render_pass_->quad_list.clear();
 135   render_pass_->shared_quad_state_list.clear();
 136
 137   Occlusion occlusion(layer_impl->draw_transform(),
 138                       SimpleEnclosedRegion(occluded),
 139                       SimpleEnclosedRegion());
 140   layer_impl->draw_properties().occlusion_in_content_space = occlusion;
 141
 142   layer_impl->WillDraw(DRAW_MODE_HARDWARE, resource_provider());
 143   layer_impl->AppendQuads(render_pass_.get(), &data);
 144   layer_impl->DidDraw(resource_provider());
 145 }
 146
 147 void LayerTestCommon::LayerImplTest::AppendQuadsForPassWithOcclusion(
 148     LayerImpl* layer_impl,
 149     RenderPass* given_render_pass,
 150     const gfx::Rect& occluded) {
 151   AppendQuadsData data;
 152
 153   given_render_pass->quad_list.clear();
 154   given_render_pass->shared_quad_state_list.clear();
 155
 156   Occlusion occlusion(layer_impl->draw_transform(),
 157                       SimpleEnclosedRegion(occluded),
 158                       SimpleEnclosedRegion());
 159   layer_impl->draw_properties().occlusion_in_content_space = occlusion;
 160
 161   layer_impl->WillDraw(DRAW_MODE_HARDWARE, resource_provider());
 162   layer_impl->AppendQuads(given_render_pass, &data);
 163   layer_impl->DidDraw(resource_provider());
 164 }
 165
 166 void LayerTestCommon::LayerImplTest::AppendSurfaceQuadsWithOcclusion(
 167     RenderSurfaceImpl* surface_impl,
 168     const gfx::Rect& occluded) {
 169   AppendQuadsData data;
 170
 171   render_pass_->quad_list.clear();
 172   render_pass_->shared_quad_state_list.clear();
 173
 174   surface_impl->AppendQuads(
 175       render_pass_.get(), gfx::Transform(),
 176       Occlusion(gfx::Transform(), SimpleEnclosedRegion(occluded),
 177                 SimpleEnclosedRegion()),
 178       SK_ColorBLACK, 1.f, nullptr, &data, RenderPassId(1, 1));
 179 }
 180
 181 }  // namespace cc