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/trees/layer_tree_host_common.h"
  14 #include "testing/gtest/include/gtest/gtest.h"
  15 #include "ui/gfx/point_conversions.h"
  16 #include "ui/gfx/rect.h"
  17 #include "ui/gfx/rect_conversions.h"
  18 #include "ui/gfx/size_conversions.h"
  19
  20 namespace cc {
  21
  22 // Align with expected and actual output.
  23 const char* LayerTestCommon::quad_string = "    Quad: ";
  24
  25 static bool CanRectFBeSafelyRoundedToRect(const gfx::RectF& r) {
  26   // Ensure that range of float values is not beyond integer range.
  27   if (!r.IsExpressibleAsRect())
  28     return false;
  29
  30   // Ensure that the values are actually integers.
  31   if (gfx::ToFlooredPoint(r.origin()) == r.origin() &&
  32       gfx::ToFlooredSize(r.size()) == r.size())
  33     return true;
  34
  35   return false;
  36 }
  37
  38 void LayerTestCommon::VerifyQuadsExactlyCoverRect(const QuadList& quads,
  39                                                   const gfx::Rect& rect) {
  40   Region remaining = rect;
  41
  42   for (size_t i = 0; i < quads.size(); ++i) {
  43     DrawQuad* quad = quads[i];
  44     gfx::RectF quad_rectf =
  45         MathUtil::MapClippedRect(quad->quadTransform(), gfx::RectF(quad->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 << i
  54                                           << " rect: " << rect.ToString()
  55                                           << " quad: " << quad_rect.ToString();
  56     EXPECT_TRUE(remaining.Contains(quad_rect))
  57         << quad_string << i << " 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::VerifyQuadsCoverRectWithOcclusion(
  67     const QuadList& quads,
  68     const gfx::Rect& rect,
  69     const gfx::Rect& occluded,
  70     size_t* partially_occluded_count) {
  71   // No quad should exist if it's fully occluded.
  72   for (size_t i = 0; i < quads.size(); ++i) {
  73     EXPECT_FALSE(occluded.Contains(quads[i]->visible_rect));
  74   }
  75
  76   // Quads that are fully occluded on one axis only should be shrunken.
  77   for (size_t i = 0; i < quads.size(); ++i) {
  78     DrawQuad* quad = quads[i];
  79     DCHECK(quad->quadTransform().IsIdentityOrIntegerTranslation());
  80     gfx::Rect target_rect =
  81         MathUtil::MapEnclosingClippedRect(quad->quadTransform(), quad->rect);
  82     gfx::Rect target_visible_rect = MathUtil::MapEnclosingClippedRect(
  83         quad->quadTransform(), quad->visible_rect);
  84
  85     bool fully_occluded_horizontal = target_rect.x() >= occluded.x() &&
  86                                      target_rect.right() <= occluded.right();
  87     bool fully_occluded_vertical = target_rect.y() >= occluded.y() &&
  88                                    target_rect.bottom() <= occluded.bottom();
  89     bool should_be_occluded =
  90         target_rect.Intersects(occluded) &&
  91         (fully_occluded_vertical || fully_occluded_horizontal);
  92     if (!should_be_occluded) {
  93       EXPECT_EQ(quad->rect.ToString(), quad->visible_rect.ToString());
  94     } else {
  95       EXPECT_NE(quad->rect.ToString(), quad->visible_rect.ToString());
  96       EXPECT_TRUE(quad->rect.Contains(quad->visible_rect));
  97       ++(*partially_occluded_count);
  98     }
  99   }
 100 }
 101
 102 LayerTestCommon::LayerImplTest::LayerImplTest()
 103     : host_(FakeLayerTreeHost::Create()),
 104       root_layer_impl_(
 105           LayerImpl::Create(host_->host_impl()->active_tree(), 1)) {
 106   scoped_ptr<FakeOutputSurface> output_surface = FakeOutputSurface::Create3d();
 107   host_->host_impl()->InitializeRenderer(
 108       output_surface.PassAs<OutputSurface>());
 109 }
 110
 111 LayerTestCommon::LayerImplTest::~LayerImplTest() {}
 112
 113 void LayerTestCommon::LayerImplTest::CalcDrawProps(
 114     const gfx::Size& viewport_size) {
 115   LayerImplList layer_list;
 116   LayerTreeHostCommon::CalcDrawPropsImplInputsForTesting inputs(
 117       root_layer_impl_.get(), viewport_size, &layer_list);
 118   LayerTreeHostCommon::CalculateDrawProperties(&inputs);
 119 }
 120
 121 void LayerTestCommon::LayerImplTest::AppendQuadsWithOcclusion(
 122     LayerImpl* layer_impl,
 123     const gfx::Rect& occluded) {
 124   AppendQuadsData data;
 125
 126   quad_culler_.clear_lists();
 127   quad_culler_.set_occluded_target_rect(occluded);
 128   layer_impl->WillDraw(DRAW_MODE_HARDWARE, resource_provider());
 129   layer_impl->AppendQuads(&quad_culler_, &data);
 130   layer_impl->DidDraw(resource_provider());
 131 }
 132
 133 void LayerTestCommon::LayerImplTest::AppendQuadsForPassWithOcclusion(
 134     LayerImpl* layer_impl,
 135     const RenderPass::Id& id,
 136     const gfx::Rect& occluded) {
 137   AppendQuadsData data(id);
 138
 139   quad_culler_.clear_lists();
 140   quad_culler_.set_occluded_target_rect(occluded);
 141   layer_impl->WillDraw(DRAW_MODE_HARDWARE, resource_provider());
 142   layer_impl->AppendQuads(&quad_culler_, &data);
 143   layer_impl->DidDraw(resource_provider());
 144 }
 145
 146 void LayerTestCommon::LayerImplTest::AppendSurfaceQuadsWithOcclusion(
 147     RenderSurfaceImpl* surface_impl,
 148     const gfx::Rect& occluded) {
 149   AppendQuadsData data;
 150
 151   quad_culler_.clear_lists();
 152   quad_culler_.set_occluded_target_rect_for_contributing_surface(occluded);
 153   bool for_replica = false;
 154   RenderPass::Id id(1, 1);
 155   surface_impl->AppendQuads(&quad_culler_, &data, for_replica, id);
 156 }
 157
 158 }  // namespace cc