src/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   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
  71 void 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
 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   scoped_ptr<FakeOutputSurface> output_surface = FakeOutputSurface::Create3d();
 115   host_->host_impl()->InitializeRenderer(
 116       output_surface.PassAs<OutputSurface>());
 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   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
 142 void 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
 156 void 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