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/point_conversions.h"
  17 #include "ui/gfx/rect.h"
  18 #include "ui/gfx/rect_conversions.h"
  19 #include "ui/gfx/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 (size_t i = 0; i < quads.size(); ++i) {
  44     DrawQuad* quad = quads[i];
  45     gfx::RectF quad_rectf =
  46         MathUtil::MapClippedRect(quad->quadTransform(), gfx::RectF(quad->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 << i
  55                                           << " rect: " << rect.ToString()
  56                                           << " quad: " << quad_rect.ToString();
  57     EXPECT_TRUE(remaining.Contains(quad_rect))
  58         << quad_string << i << " 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::VerifyQuadsCoverRectWithOcclusion(
  68     const QuadList& quads,
  69     const gfx::Rect& rect,
  70     const gfx::Rect& occluded,
  71     size_t* partially_occluded_count) {
  72   // No quad should exist if it's fully occluded.
  73   for (size_t i = 0; i < quads.size(); ++i) {
  74     EXPECT_FALSE(occluded.Contains(quads[i]->visible_rect));
  75   }
  76
  77   // Quads that are fully occluded on one axis only should be shrunken.
  78   for (size_t i = 0; i < quads.size(); ++i) {
  79     DrawQuad* quad = quads[i];
  80     DCHECK(quad->quadTransform().IsIdentityOrIntegerTranslation());
  81     gfx::Rect target_rect =
  82         MathUtil::MapEnclosingClippedRect(quad->quadTransform(), quad->rect);
  83     gfx::Rect target_visible_rect = MathUtil::MapEnclosingClippedRect(
  84         quad->quadTransform(), quad->visible_rect);
  85
  86     bool fully_occluded_horizontal = target_rect.x() >= occluded.x() &&
  87                                      target_rect.right() <= occluded.right();
  88     bool fully_occluded_vertical = target_rect.y() >= occluded.y() &&
  89                                    target_rect.bottom() <= occluded.bottom();
  90     bool should_be_occluded =
  91         target_rect.Intersects(occluded) &&
  92         (fully_occluded_vertical || fully_occluded_horizontal);
  93     if (!should_be_occluded) {
  94       EXPECT_EQ(quad->rect.ToString(), quad->visible_rect.ToString());
  95     } else {
  96       EXPECT_NE(quad->rect.ToString(), quad->visible_rect.ToString());
  97       EXPECT_TRUE(quad->rect.Contains(quad->visible_rect));
  98       ++(*partially_occluded_count);
  99     }
 100   }
 101 }
 102
 103 LayerTestCommon::LayerImplTest::LayerImplTest()
 104     : host_(FakeLayerTreeHost::Create()),
 105       root_layer_impl_(LayerImpl::Create(host_->host_impl()->active_tree(), 1)),
 106       render_pass_(RenderPass::Create()) {
 107   scoped_ptr<FakeOutputSurface> output_surface = FakeOutputSurface::Create3d();
 108   host_->host_impl()->InitializeRenderer(
 109       output_surface.PassAs<OutputSurface>());
 110 }
 111
 112 LayerTestCommon::LayerImplTest::~LayerImplTest() {}
 113
 114 void LayerTestCommon::LayerImplTest::CalcDrawProps(
 115     const gfx::Size& viewport_size) {
 116   LayerImplList layer_list;
 117   LayerTreeHostCommon::CalcDrawPropsImplInputsForTesting inputs(
 118       root_layer_impl_.get(), viewport_size, &layer_list);
 119   LayerTreeHostCommon::CalculateDrawProperties(&inputs);
 120 }
 121
 122 void LayerTestCommon::LayerImplTest::AppendQuadsWithOcclusion(
 123     LayerImpl* layer_impl,
 124     const gfx::Rect& occluded) {
 125   AppendQuadsData data;
 126
 127   render_pass_->quad_list.clear();
 128   render_pass_->shared_quad_state_list.clear();
 129   occlusion_tracker_.set_occluded_target_rect(occluded);
 130   layer_impl->WillDraw(DRAW_MODE_HARDWARE, resource_provider());
 131   layer_impl->AppendQuads(render_pass_.get(), occlusion_tracker_, &data);
 132   layer_impl->DidDraw(resource_provider());
 133 }
 134
 135 void LayerTestCommon::LayerImplTest::AppendQuadsForPassWithOcclusion(
 136     LayerImpl* layer_impl,
 137     const RenderPass::Id& id,
 138     const gfx::Rect& occluded) {
 139   AppendQuadsData data(id);
 140
 141   render_pass_->quad_list.clear();
 142   render_pass_->shared_quad_state_list.clear();
 143   occlusion_tracker_.set_occluded_target_rect(occluded);
 144   layer_impl->WillDraw(DRAW_MODE_HARDWARE, resource_provider());
 145   layer_impl->AppendQuads(render_pass_.get(), occlusion_tracker_, &data);
 146   layer_impl->DidDraw(resource_provider());
 147 }
 148
 149 void LayerTestCommon::LayerImplTest::AppendSurfaceQuadsWithOcclusion(
 150     RenderSurfaceImpl* surface_impl,
 151     const gfx::Rect& occluded) {
 152   AppendQuadsData data;
 153
 154   render_pass_->quad_list.clear();
 155   render_pass_->shared_quad_state_list.clear();
 156   occlusion_tracker_.set_occluded_target_rect_for_contributing_surface(
 157       occluded);
 158   bool for_replica = false;
 159   RenderPass::Id id(1, 1);
 160   surface_impl->AppendQuads(
 161       render_pass_.get(), occlusion_tracker_, &data, for_replica, id);
 162 }
 163
 164 }  // namespace cc