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
21namespace cc {
22
23// Align with expected and actual output.
24const char* LayerTestCommon::quad_string = "    Quad: ";
25
26static 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
39void LayerTestCommon::VerifyQuadsExactlyCoverRect(const QuadList& quads,
40                                                  const gfx::Rect& rect) {
41  Region remaining = rect;
42
43  size_t i = 0;
44  for (QuadList::ConstIterator iter = quads.begin(); iter != quads.end();
45       ++iter) {
46    const DrawQuad* quad = &*iter;
47    gfx::RectF quad_rectf =
48        MathUtil::MapClippedRect(quad->quadTransform(), gfx::RectF(quad->rect));
49
50    // Before testing for exact coverage in the integer world, assert that
51    // rounding will not round the rect incorrectly.
52    ASSERT_TRUE(CanRectFBeSafelyRoundedToRect(quad_rectf));
53
54    gfx::Rect quad_rect = gfx::ToEnclosingRect(quad_rectf);
55
56    EXPECT_TRUE(rect.Contains(quad_rect)) << quad_string << i
57                                          << " rect: " << rect.ToString()
58                                          << " quad: " << quad_rect.ToString();
59    EXPECT_TRUE(remaining.Contains(quad_rect))
60        << quad_string << i << " remaining: " << remaining.ToString()
61        << " quad: " << quad_rect.ToString();
62    remaining.Subtract(quad_rect);
63
64    ++i;
65  }
66
67  EXPECT_TRUE(remaining.IsEmpty());
68}
69
70// static
71void LayerTestCommon::VerifyQuadsAreOccluded(const QuadList& quads,
72                                             const gfx::Rect& occluded,
73                                             size_t* partially_occluded_count) {
74  // No quad should exist if it's fully occluded.
75  for (QuadList::ConstIterator iter = quads.begin(); iter != quads.end();
76       ++iter) {
77    gfx::Rect target_visible_rect = MathUtil::MapEnclosingClippedRect(
78        iter->quadTransform(), iter->visible_rect);
79    EXPECT_FALSE(occluded.Contains(target_visible_rect));
80  }
81
82  // Quads that are fully occluded on one axis only should be shrunken.
83  for (QuadList::ConstIterator iter = quads.begin(); iter != quads.end();
84       ++iter) {
85    const DrawQuad* quad = &*iter;
86    DCHECK(quad->quadTransform().IsIdentityOrIntegerTranslation());
87    gfx::Rect target_rect =
88        MathUtil::MapEnclosingClippedRect(quad->quadTransform(), quad->rect);
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
109LayerTestCommon::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  scoped_ptr<FakeOutputSurface> output_surface = FakeOutputSurface::Create3d();
115  host_->host_impl()->InitializeRenderer(
116      output_surface.PassAs<OutputSurface>());
117}
118
119LayerTestCommon::LayerImplTest::~LayerImplTest() {}
120
121void 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
129void 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  occlusion_tracker_.set_occluded_target_rect(occluded);
137  layer_impl->WillDraw(DRAW_MODE_HARDWARE, resource_provider());
138  layer_impl->AppendQuads(render_pass_.get(), occlusion_tracker_, &data);
139  layer_impl->DidDraw(resource_provider());
140}
141
142void LayerTestCommon::LayerImplTest::AppendQuadsForPassWithOcclusion(
143    LayerImpl* layer_impl,
144    const RenderPassId& id,
145    const gfx::Rect& occluded) {
146  AppendQuadsData data(id);
147
148  render_pass_->quad_list.clear();
149  render_pass_->shared_quad_state_list.clear();
150  occlusion_tracker_.set_occluded_target_rect(occluded);
151  layer_impl->WillDraw(DRAW_MODE_HARDWARE, resource_provider());
152  layer_impl->AppendQuads(render_pass_.get(), occlusion_tracker_, &data);
153  layer_impl->DidDraw(resource_provider());
154}
155
156void LayerTestCommon::LayerImplTest::AppendSurfaceQuadsWithOcclusion(
157    RenderSurfaceImpl* surface_impl,
158    const gfx::Rect& occluded) {
159  AppendQuadsData data;
160
161  render_pass_->quad_list.clear();
162  render_pass_->shared_quad_state_list.clear();
163  occlusion_tracker_.set_occluded_target_rect_for_contributing_surface(
164      occluded);
165  bool for_replica = false;
166  RenderPassId id(1, 1);
167  surface_impl->AppendQuads(
168      render_pass_.get(), occlusion_tracker_, &data, for_replica, id);
169}
170
171}  // namespace cc
172