cc/resources/pixel_ref_map_unittest.cc

   1 // Copyright 2015 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/resources/pixel_ref_map.h"
   6
   7 #include "base/memory/ref_counted.h"
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/values.h"
  10 #include "cc/resources/picture.h"
  11 #include "cc/test/fake_content_layer_client.h"
  12 #include "cc/test/skia_common.h"
  13 #include "testing/gtest/include/gtest/gtest.h"
  14 #include "third_party/skia/include/core/SkGraphics.h"
  15 #include "ui/gfx/geometry/rect.h"
  16 #include "ui/gfx/skia_util.h"
  17
  18 namespace cc {
  19 namespace {
  20
  21 TEST(PixelRefMapTest, PixelRefMapIterator) {
  22   gfx::Rect layer_rect(2048, 2048);
  23
  24   gfx::Size tile_grid_size(512, 512);
  25
  26   FakeContentLayerClient content_layer_client;
  27
  28   // Discardable pixel refs are found in the following grids:
  29   // |---|---|---|---|
  30   // |   | x |   | x |
  31   // |---|---|---|---|
  32   // | x |   | x |   |
  33   // |---|---|---|---|
  34   // |   | x |   | x |
  35   // |---|---|---|---|
  36   // | x |   | x |   |
  37   // |---|---|---|---|
  38   SkBitmap discardable_bitmap[4][4];
  39   for (int y = 0; y < 4; ++y) {
  40     for (int x = 0; x < 4; ++x) {
  41       if ((x + y) & 1) {
  42         CreateBitmap(gfx::Size(500, 500), "discardable",
  43                      &discardable_bitmap[y][x]);
  44         SkPaint paint;
  45         content_layer_client.add_draw_bitmap(
  46             discardable_bitmap[y][x], gfx::Point(x * 512 + 6, y * 512 + 6),
  47             paint);
  48       }
  49     }
  50   }
  51
  52   scoped_refptr<Picture> picture =
  53       Picture::Create(layer_rect, &content_layer_client, tile_grid_size, true,
  54                       RecordingSource::RECORD_NORMALLY);
  55
  56   // Default iterator does not have any pixel refs.
  57   {
  58     PixelRefMap::Iterator iterator;
  59     EXPECT_FALSE(iterator);
  60   }
  61
  62   for (int y = 0; y < 4; ++y) {
  63     for (int x = 0; x < 4; ++x) {
  64       PixelRefMap::Iterator iterator(gfx::Rect(x * 512, y * 512, 500, 500),
  65                                      picture.get());
  66       if ((x + y) & 1) {
  67         EXPECT_TRUE(iterator) << x << " " << y;
  68         EXPECT_TRUE(*iterator == discardable_bitmap[y][x].pixelRef())
  69             << x << " " << y;
  70         EXPECT_FALSE(++iterator) << x << " " << y;
  71       } else {
  72         EXPECT_FALSE(iterator) << x << " " << y;
  73       }
  74     }
  75   }
  76   // Capture 4 pixel refs.
  77   {
  78     PixelRefMap::Iterator iterator(gfx::Rect(512, 512, 2048, 2048),
  79                                    picture.get());
  80     EXPECT_TRUE(iterator);
  81     EXPECT_TRUE(*iterator == discardable_bitmap[1][2].pixelRef());
  82     EXPECT_TRUE(++iterator);
  83     EXPECT_TRUE(*iterator == discardable_bitmap[2][1].pixelRef());
  84     EXPECT_TRUE(++iterator);
  85     EXPECT_TRUE(*iterator == discardable_bitmap[2][3].pixelRef());
  86     EXPECT_TRUE(++iterator);
  87     EXPECT_TRUE(*iterator == discardable_bitmap[3][2].pixelRef());
  88     EXPECT_FALSE(++iterator);
  89   }
  90
  91   // Copy test.
  92   PixelRefMap::Iterator iterator(gfx::Rect(512, 512, 2048, 2048),
  93                                  picture.get());
  94   EXPECT_TRUE(iterator);
  95   EXPECT_TRUE(*iterator == discardable_bitmap[1][2].pixelRef());
  96   EXPECT_TRUE(++iterator);
  97   EXPECT_TRUE(*iterator == discardable_bitmap[2][1].pixelRef());
  98
  99   // copy now points to the same spot as iterator,
 100   // but both can be incremented independently.
 101   PixelRefMap::Iterator copy = iterator;
 102   EXPECT_TRUE(++iterator);
 103   EXPECT_TRUE(*iterator == discardable_bitmap[2][3].pixelRef());
 104   EXPECT_TRUE(++iterator);
 105   EXPECT_TRUE(*iterator == discardable_bitmap[3][2].pixelRef());
 106   EXPECT_FALSE(++iterator);
 107
 108   EXPECT_TRUE(copy);
 109   EXPECT_TRUE(*copy == discardable_bitmap[2][1].pixelRef());
 110   EXPECT_TRUE(++copy);
 111   EXPECT_TRUE(*copy == discardable_bitmap[2][3].pixelRef());
 112   EXPECT_TRUE(++copy);
 113   EXPECT_TRUE(*copy == discardable_bitmap[3][2].pixelRef());
 114   EXPECT_FALSE(++copy);
 115 }
 116
 117 TEST(PixelRefMapTest, PixelRefMapIteratorNonZeroLayer) {
 118   gfx::Rect layer_rect(1024, 0, 2048, 2048);
 119
 120   gfx::Size tile_grid_size(512, 512);
 121
 122   FakeContentLayerClient content_layer_client;
 123
 124   // Discardable pixel refs are found in the following grids:
 125   // |---|---|---|---|
 126   // |   | x |   | x |
 127   // |---|---|---|---|
 128   // | x |   | x |   |
 129   // |---|---|---|---|
 130   // |   | x |   | x |
 131   // |---|---|---|---|
 132   // | x |   | x |   |
 133   // |---|---|---|---|
 134   SkBitmap discardable_bitmap[4][4];
 135   for (int y = 0; y < 4; ++y) {
 136     for (int x = 0; x < 4; ++x) {
 137       if ((x + y) & 1) {
 138         CreateBitmap(gfx::Size(500, 500), "discardable",
 139                      &discardable_bitmap[y][x]);
 140         SkPaint paint;
 141         content_layer_client.add_draw_bitmap(
 142             discardable_bitmap[y][x],
 143             gfx::Point(1024 + x * 512 + 6, y * 512 + 6), paint);
 144       }
 145     }
 146   }
 147
 148   scoped_refptr<Picture> picture =
 149       Picture::Create(layer_rect, &content_layer_client, tile_grid_size, true,
 150                       RecordingSource::RECORD_NORMALLY);
 151
 152   // Default iterator does not have any pixel refs.
 153   {
 154     PixelRefMap::Iterator iterator;
 155     EXPECT_FALSE(iterator);
 156   }
 157
 158   for (int y = 0; y < 4; ++y) {
 159     for (int x = 0; x < 4; ++x) {
 160       PixelRefMap::Iterator iterator(
 161           gfx::Rect(1024 + x * 512, y * 512, 500, 500), picture.get());
 162       if ((x + y) & 1) {
 163         EXPECT_TRUE(iterator) << x << " " << y;
 164         EXPECT_TRUE(*iterator == discardable_bitmap[y][x].pixelRef());
 165         EXPECT_FALSE(++iterator) << x << " " << y;
 166       } else {
 167         EXPECT_FALSE(iterator) << x << " " << y;
 168       }
 169     }
 170   }
 171   // Capture 4 pixel refs.
 172   {
 173     PixelRefMap::Iterator iterator(gfx::Rect(1024 + 512, 512, 2048, 2048),
 174                                    picture.get());
 175     EXPECT_TRUE(iterator);
 176     EXPECT_TRUE(*iterator == discardable_bitmap[1][2].pixelRef());
 177     EXPECT_TRUE(++iterator);
 178     EXPECT_TRUE(*iterator == discardable_bitmap[2][1].pixelRef());
 179     EXPECT_TRUE(++iterator);
 180     EXPECT_TRUE(*iterator == discardable_bitmap[2][3].pixelRef());
 181     EXPECT_TRUE(++iterator);
 182     EXPECT_TRUE(*iterator == discardable_bitmap[3][2].pixelRef());
 183     EXPECT_FALSE(++iterator);
 184   }
 185
 186   // Copy test.
 187   {
 188     PixelRefMap::Iterator iterator(gfx::Rect(1024 + 512, 512, 2048, 2048),
 189                                    picture.get());
 190     EXPECT_TRUE(iterator);
 191     EXPECT_TRUE(*iterator == discardable_bitmap[1][2].pixelRef());
 192     EXPECT_TRUE(++iterator);
 193     EXPECT_TRUE(*iterator == discardable_bitmap[2][1].pixelRef());
 194
 195     // copy now points to the same spot as iterator,
 196     // but both can be incremented independently.
 197     PixelRefMap::Iterator copy = iterator;
 198     EXPECT_TRUE(++iterator);
 199     EXPECT_TRUE(*iterator == discardable_bitmap[2][3].pixelRef());
 200     EXPECT_TRUE(++iterator);
 201     EXPECT_TRUE(*iterator == discardable_bitmap[3][2].pixelRef());
 202     EXPECT_FALSE(++iterator);
 203
 204     EXPECT_TRUE(copy);
 205     EXPECT_TRUE(*copy == discardable_bitmap[2][1].pixelRef());
 206     EXPECT_TRUE(++copy);
 207     EXPECT_TRUE(*copy == discardable_bitmap[2][3].pixelRef());
 208     EXPECT_TRUE(++copy);
 209     EXPECT_TRUE(*copy == discardable_bitmap[3][2].pixelRef());
 210     EXPECT_FALSE(++copy);
 211   }
 212
 213   // Non intersecting rects
 214   {
 215     PixelRefMap::Iterator iterator(gfx::Rect(0, 0, 1000, 1000), picture.get());
 216     EXPECT_FALSE(iterator);
 217   }
 218   {
 219     PixelRefMap::Iterator iterator(gfx::Rect(3500, 0, 1000, 1000),
 220                                    picture.get());
 221     EXPECT_FALSE(iterator);
 222   }
 223   {
 224     PixelRefMap::Iterator iterator(gfx::Rect(0, 1100, 1000, 1000),
 225                                    picture.get());
 226     EXPECT_FALSE(iterator);
 227   }
 228   {
 229     PixelRefMap::Iterator iterator(gfx::Rect(3500, 1100, 1000, 1000),
 230                                    picture.get());
 231     EXPECT_FALSE(iterator);
 232   }
 233 }
 234
 235 TEST(PixelRefMapTest, PixelRefMapIteratorOnePixelQuery) {
 236   gfx::Rect layer_rect(2048, 2048);
 237
 238   gfx::Size tile_grid_size(512, 512);
 239
 240   FakeContentLayerClient content_layer_client;
 241
 242   // Discardable pixel refs are found in the following grids:
 243   // |---|---|---|---|
 244   // |   | x |   | x |
 245   // |---|---|---|---|
 246   // | x |   | x |   |
 247   // |---|---|---|---|
 248   // |   | x |   | x |
 249   // |---|---|---|---|
 250   // | x |   | x |   |
 251   // |---|---|---|---|
 252   SkBitmap discardable_bitmap[4][4];
 253   for (int y = 0; y < 4; ++y) {
 254     for (int x = 0; x < 4; ++x) {
 255       if ((x + y) & 1) {
 256         CreateBitmap(gfx::Size(500, 500), "discardable",
 257                      &discardable_bitmap[y][x]);
 258         SkPaint paint;
 259         content_layer_client.add_draw_bitmap(
 260             discardable_bitmap[y][x], gfx::Point(x * 512 + 6, y * 512 + 6),
 261             paint);
 262       }
 263     }
 264   }
 265
 266   scoped_refptr<Picture> picture =
 267       Picture::Create(layer_rect, &content_layer_client, tile_grid_size, true,
 268                       RecordingSource::RECORD_NORMALLY);
 269
 270   // Default iterator does not have any pixel refs.
 271   {
 272     PixelRefMap::Iterator iterator;
 273     EXPECT_FALSE(iterator);
 274   }
 275
 276   for (int y = 0; y < 4; ++y) {
 277     for (int x = 0; x < 4; ++x) {
 278       PixelRefMap::Iterator iterator(gfx::Rect(x * 512, y * 512 + 256, 1, 1),
 279                                      picture.get());
 280       if ((x + y) & 1) {
 281         EXPECT_TRUE(iterator) << x << " " << y;
 282         EXPECT_TRUE(*iterator == discardable_bitmap[y][x].pixelRef());
 283         EXPECT_FALSE(++iterator) << x << " " << y;
 284       } else {
 285         EXPECT_FALSE(iterator) << x << " " << y;
 286       }
 287     }
 288   }
 289 }
 290
 291 }  // namespace
 292 }  // namespace cc