cc/playback/display_item_list_unittest.cc

   1 // Copyright 2014 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/playback/display_item_list.h"
   6
   7 #include <vector>
   8
   9 #include "cc/output/filter_operation.h"
  10 #include "cc/output/filter_operations.h"
  11 #include "cc/playback/clip_display_item.h"
  12 #include "cc/playback/display_item_list_settings.h"
  13 #include "cc/playback/drawing_display_item.h"
  14 #include "cc/playback/filter_display_item.h"
  15 #include "cc/playback/transform_display_item.h"
  16 #include "cc/test/skia_common.h"
  17 #include "skia/ext/refptr.h"
  18 #include "testing/gtest/include/gtest/gtest.h"
  19 #include "third_party/skia/include/core/SkBitmap.h"
  20 #include "third_party/skia/include/core/SkCanvas.h"
  21 #include "third_party/skia/include/core/SkColor.h"
  22 #include "third_party/skia/include/core/SkPictureRecorder.h"
  23 #include "third_party/skia/include/effects/SkBitmapSource.h"
  24 #include "third_party/skia/include/utils/SkPictureUtils.h"
  25 #include "ui/gfx/geometry/rect_conversions.h"
  26 #include "ui/gfx/skia_util.h"
  27
  28 namespace cc {
  29
  30 TEST(DisplayItemListTest, SingleDrawingItem) {
  31   gfx::Rect layer_rect(100, 100);
  32   SkPictureRecorder recorder;
  33   skia::RefPtr<SkCanvas> canvas;
  34   skia::RefPtr<SkPicture> picture;
  35   SkPaint blue_paint;
  36   blue_paint.setColor(SK_ColorBLUE);
  37   SkPaint red_paint;
  38   red_paint.setColor(SK_ColorRED);
  39   unsigned char pixels[4 * 100 * 100] = {0};
  40   const bool use_cached_picture = true;
  41   scoped_refptr<DisplayItemList> list =
  42       DisplayItemList::Create(layer_rect, use_cached_picture);
  43
  44   gfx::PointF offset(8.f, 9.f);
  45   gfx::RectF recording_rect(offset, layer_rect.size());
  46   canvas = skia::SharePtr(
  47       recorder.beginRecording(gfx::RectFToSkRect(recording_rect)));
  48   canvas->translate(offset.x(), offset.y());
  49   canvas->drawRectCoords(0.f, 0.f, 60.f, 60.f, red_paint);
  50   canvas->drawRectCoords(50.f, 50.f, 75.f, 75.f, blue_paint);
  51   picture = skia::AdoptRef(recorder.endRecordingAsPicture());
  52   auto* item = list->CreateAndAppendItem<DrawingDisplayItem>();
  53   item->SetNew(picture);
  54   list->Finalize();
  55   DrawDisplayList(pixels, layer_rect, list);
  56
  57   SkBitmap expected_bitmap;
  58   unsigned char expected_pixels[4 * 100 * 100] = {0};
  59   SkImageInfo info =
  60       SkImageInfo::MakeN32Premul(layer_rect.width(), layer_rect.height());
  61   expected_bitmap.installPixels(info, expected_pixels, info.minRowBytes());
  62   SkCanvas expected_canvas(expected_bitmap);
  63   expected_canvas.clipRect(gfx::RectToSkRect(layer_rect));
  64   expected_canvas.drawRectCoords(0.f + offset.x(), 0.f + offset.y(),
  65                                  60.f + offset.x(), 60.f + offset.y(),
  66                                  red_paint);
  67   expected_canvas.drawRectCoords(50.f + offset.x(), 50.f + offset.y(),
  68                                  75.f + offset.x(), 75.f + offset.y(),
  69                                  blue_paint);
  70
  71   EXPECT_EQ(0, memcmp(pixels, expected_pixels, 4 * 100 * 100));
  72 }
  73
  74 TEST(DisplayItemListTest, ClipItem) {
  75   gfx::Rect layer_rect(100, 100);
  76   SkPictureRecorder recorder;
  77   skia::RefPtr<SkCanvas> canvas;
  78   skia::RefPtr<SkPicture> picture;
  79   SkPaint blue_paint;
  80   blue_paint.setColor(SK_ColorBLUE);
  81   SkPaint red_paint;
  82   red_paint.setColor(SK_ColorRED);
  83   unsigned char pixels[4 * 100 * 100] = {0};
  84   const bool use_cached_picture = true;
  85   scoped_refptr<DisplayItemList> list =
  86       DisplayItemList::Create(layer_rect, use_cached_picture);
  87
  88   gfx::PointF first_offset(8.f, 9.f);
  89   gfx::RectF first_recording_rect(first_offset, layer_rect.size());
  90   canvas = skia::SharePtr(
  91       recorder.beginRecording(gfx::RectFToSkRect(first_recording_rect)));
  92   canvas->translate(first_offset.x(), first_offset.y());
  93   canvas->drawRectCoords(0.f, 0.f, 60.f, 60.f, red_paint);
  94   picture = skia::AdoptRef(recorder.endRecordingAsPicture());
  95   auto* item1 = list->CreateAndAppendItem<DrawingDisplayItem>();
  96   item1->SetNew(picture.Pass());
  97
  98   gfx::Rect clip_rect(60, 60, 10, 10);
  99   auto* item2 = list->CreateAndAppendItem<ClipDisplayItem>();
 100   item2->SetNew(clip_rect, std::vector<SkRRect>());
 101
 102   gfx::PointF second_offset(2.f, 3.f);
 103   gfx::RectF second_recording_rect(second_offset, layer_rect.size());
 104   canvas = skia::SharePtr(
 105       recorder.beginRecording(gfx::RectFToSkRect(second_recording_rect)));
 106   canvas->translate(second_offset.x(), second_offset.y());
 107   canvas->drawRectCoords(50.f, 50.f, 75.f, 75.f, blue_paint);
 108   picture = skia::AdoptRef(recorder.endRecordingAsPicture());
 109   auto* item3 = list->CreateAndAppendItem<DrawingDisplayItem>();
 110   item3->SetNew(picture.Pass());
 111
 112   list->CreateAndAppendItem<EndClipDisplayItem>();
 113   list->Finalize();
 114
 115   DrawDisplayList(pixels, layer_rect, list);
 116
 117   SkBitmap expected_bitmap;
 118   unsigned char expected_pixels[4 * 100 * 100] = {0};
 119   SkImageInfo info =
 120       SkImageInfo::MakeN32Premul(layer_rect.width(), layer_rect.height());
 121   expected_bitmap.installPixels(info, expected_pixels, info.minRowBytes());
 122   SkCanvas expected_canvas(expected_bitmap);
 123   expected_canvas.clipRect(gfx::RectToSkRect(layer_rect));
 124   expected_canvas.drawRectCoords(0.f + first_offset.x(), 0.f + first_offset.y(),
 125                                  60.f + first_offset.x(),
 126                                  60.f + first_offset.y(), red_paint);
 127   expected_canvas.clipRect(gfx::RectToSkRect(clip_rect));
 128   expected_canvas.drawRectCoords(
 129       50.f + second_offset.x(), 50.f + second_offset.y(),
 130       75.f + second_offset.x(), 75.f + second_offset.y(), blue_paint);
 131
 132   EXPECT_EQ(0, memcmp(pixels, expected_pixels, 4 * 100 * 100));
 133 }
 134
 135 TEST(DisplayItemListTest, TransformItem) {
 136   gfx::Rect layer_rect(100, 100);
 137   SkPictureRecorder recorder;
 138   skia::RefPtr<SkCanvas> canvas;
 139   skia::RefPtr<SkPicture> picture;
 140   SkPaint blue_paint;
 141   blue_paint.setColor(SK_ColorBLUE);
 142   SkPaint red_paint;
 143   red_paint.setColor(SK_ColorRED);
 144   unsigned char pixels[4 * 100 * 100] = {0};
 145   const bool use_cached_picture = true;
 146   scoped_refptr<DisplayItemList> list =
 147       DisplayItemList::Create(layer_rect, use_cached_picture);
 148
 149   gfx::PointF first_offset(8.f, 9.f);
 150   gfx::RectF first_recording_rect(first_offset, layer_rect.size());
 151   canvas = skia::SharePtr(
 152       recorder.beginRecording(gfx::RectFToSkRect(first_recording_rect)));
 153   canvas->translate(first_offset.x(), first_offset.y());
 154   canvas->drawRectCoords(0.f, 0.f, 60.f, 60.f, red_paint);
 155   picture = skia::AdoptRef(recorder.endRecordingAsPicture());
 156   auto* item1 = list->CreateAndAppendItem<DrawingDisplayItem>();
 157   item1->SetNew(picture);
 158
 159   gfx::Transform transform;
 160   transform.Rotate(45.0);
 161   auto* item2 = list->CreateAndAppendItem<TransformDisplayItem>();
 162   item2->SetNew(transform);
 163
 164   gfx::PointF second_offset(2.f, 3.f);
 165   gfx::RectF second_recording_rect(second_offset, layer_rect.size());
 166   canvas = skia::SharePtr(
 167       recorder.beginRecording(gfx::RectFToSkRect(second_recording_rect)));
 168   canvas->translate(second_offset.x(), second_offset.y());
 169   canvas->drawRectCoords(50.f, 50.f, 75.f, 75.f, blue_paint);
 170   picture = skia::AdoptRef(recorder.endRecordingAsPicture());
 171   auto* item3 = list->CreateAndAppendItem<DrawingDisplayItem>();
 172   item3->SetNew(picture);
 173
 174   list->CreateAndAppendItem<EndTransformDisplayItem>();
 175   list->Finalize();
 176
 177   DrawDisplayList(pixels, layer_rect, list);
 178
 179   SkBitmap expected_bitmap;
 180   unsigned char expected_pixels[4 * 100 * 100] = {0};
 181   SkImageInfo info =
 182       SkImageInfo::MakeN32Premul(layer_rect.width(), layer_rect.height());
 183   expected_bitmap.installPixels(info, expected_pixels, info.minRowBytes());
 184   SkCanvas expected_canvas(expected_bitmap);
 185   expected_canvas.clipRect(gfx::RectToSkRect(layer_rect));
 186   expected_canvas.drawRectCoords(0.f + first_offset.x(), 0.f + first_offset.y(),
 187                                  60.f + first_offset.x(),
 188                                  60.f + first_offset.y(), red_paint);
 189   expected_canvas.setMatrix(transform.matrix());
 190   expected_canvas.drawRectCoords(
 191       50.f + second_offset.x(), 50.f + second_offset.y(),
 192       75.f + second_offset.x(), 75.f + second_offset.y(), blue_paint);
 193
 194   EXPECT_EQ(0, memcmp(pixels, expected_pixels, 4 * 100 * 100));
 195 }
 196
 197 TEST(DisplayItemListTest, FilterItem) {
 198   gfx::Rect layer_rect(100, 100);
 199   FilterOperations filters;
 200   unsigned char pixels[4 * 100 * 100] = {0};
 201   const bool use_cached_picture = true;
 202   scoped_refptr<DisplayItemList> list =
 203       DisplayItemList::Create(layer_rect, use_cached_picture);
 204
 205   SkBitmap source_bitmap;
 206   source_bitmap.allocN32Pixels(50, 50);
 207   SkCanvas source_canvas(source_bitmap);
 208   source_canvas.clear(SkColorSetRGB(128, 128, 128));
 209
 210   // For most SkImageFilters, the |dst| bounds computed by computeFastBounds are
 211   // dependent on the provided |src| bounds. This means, for example, that
 212   // translating |src| results in a corresponding translation of |dst|. But this
 213   // is not the case for all SkImageFilters; for some of them (e.g.
 214   // SkBitmapSource), the computation of |dst| in computeFastBounds doesn't
 215   // involve |src| at all. Incorrectly assuming such a relationship (e.g. by
 216   // translating |dst| after it is computed by computeFastBounds, rather than
 217   // translating |src| before it provided to computedFastBounds) can cause
 218   // incorrect clipping of filter output. To test for this, we include an
 219   // SkBitmapSource filter in |filters|. Here, |src| is |filter_bounds|, defined
 220   // below.
 221   skia::RefPtr<SkImageFilter> image_filter =
 222       skia::AdoptRef(SkBitmapSource::Create(source_bitmap));
 223   filters.Append(FilterOperation::CreateReferenceFilter(image_filter));
 224   filters.Append(FilterOperation::CreateBrightnessFilter(0.5f));
 225   gfx::RectF filter_bounds(10.f, 10.f, 50.f, 50.f);
 226   auto* item = list->CreateAndAppendItem<FilterDisplayItem>();
 227   item->SetNew(filters, filter_bounds);
 228   list->CreateAndAppendItem<EndFilterDisplayItem>();
 229   list->Finalize();
 230
 231   DrawDisplayList(pixels, layer_rect, list);
 232
 233   SkBitmap expected_bitmap;
 234   unsigned char expected_pixels[4 * 100 * 100] = {0};
 235   SkPaint paint;
 236   paint.setColor(SkColorSetRGB(64, 64, 64));
 237   SkImageInfo info =
 238       SkImageInfo::MakeN32Premul(layer_rect.width(), layer_rect.height());
 239   expected_bitmap.installPixels(info, expected_pixels, info.minRowBytes());
 240   SkCanvas expected_canvas(expected_bitmap);
 241   expected_canvas.drawRect(RectFToSkRect(filter_bounds), paint);
 242
 243   EXPECT_EQ(0, memcmp(pixels, expected_pixels, 4 * 100 * 100));
 244 }
 245
 246 TEST(DisplayItemListTest, CompactingItems) {
 247   gfx::Rect layer_rect(100, 100);
 248   SkPictureRecorder recorder;
 249   skia::RefPtr<SkCanvas> canvas;
 250   skia::RefPtr<SkPicture> picture;
 251   SkPaint blue_paint;
 252   blue_paint.setColor(SK_ColorBLUE);
 253   SkPaint red_paint;
 254   red_paint.setColor(SK_ColorRED);
 255   unsigned char pixels[4 * 100 * 100] = {0};
 256
 257   gfx::PointF offset(8.f, 9.f);
 258   gfx::RectF recording_rect(offset, layer_rect.size());
 259
 260   bool use_cached_picture = false;
 261   scoped_refptr<DisplayItemList> list_without_caching =
 262       DisplayItemList::Create(layer_rect, use_cached_picture);
 263
 264   canvas = skia::SharePtr(
 265       recorder.beginRecording(gfx::RectFToSkRect(recording_rect)));
 266   canvas->translate(offset.x(), offset.y());
 267   canvas->drawRectCoords(0.f, 0.f, 60.f, 60.f, red_paint);
 268   canvas->drawRectCoords(50.f, 50.f, 75.f, 75.f, blue_paint);
 269   picture = skia::AdoptRef(recorder.endRecordingAsPicture());
 270   auto* item1 = list_without_caching->CreateAndAppendItem<DrawingDisplayItem>();
 271   item1->SetNew(picture);
 272   list_without_caching->Finalize();
 273   DrawDisplayList(pixels, layer_rect, list_without_caching);
 274
 275   unsigned char expected_pixels[4 * 100 * 100] = {0};
 276   use_cached_picture = true;
 277   scoped_refptr<DisplayItemList> list_with_caching =
 278       DisplayItemList::Create(layer_rect, use_cached_picture);
 279   auto* item2 = list_with_caching->CreateAndAppendItem<DrawingDisplayItem>();
 280   item2->SetNew(picture);
 281   list_with_caching->Finalize();
 282   DrawDisplayList(expected_pixels, layer_rect, list_with_caching);
 283
 284   EXPECT_EQ(0, memcmp(pixels, expected_pixels, 4 * 100 * 100));
 285 }
 286
 287 TEST(DisplayItemListTest, ApproximateMemoryUsage) {
 288   const int kNumCommandsInTestSkPicture = 1000;
 289   scoped_refptr<DisplayItemList> list;
 290   size_t memory_usage;
 291
 292   // Make an SkPicture whose size is known.
 293   gfx::Rect layer_rect(100, 100);
 294   SkPictureRecorder recorder;
 295   SkPaint blue_paint;
 296   blue_paint.setColor(SK_ColorBLUE);
 297   SkCanvas* canvas = recorder.beginRecording(gfx::RectFToSkRect(layer_rect));
 298   for (int i = 0; i < kNumCommandsInTestSkPicture; i++)
 299     canvas->drawPaint(blue_paint);
 300   skia::RefPtr<SkPicture> picture =
 301       skia::AdoptRef(recorder.endRecordingAsPicture());
 302   size_t picture_size = SkPictureUtils::ApproximateBytesUsed(picture.get());
 303   ASSERT_GE(picture_size, kNumCommandsInTestSkPicture * sizeof(blue_paint));
 304
 305   // Using a cached picture, we should get about the right size.
 306   list = DisplayItemList::Create(layer_rect, true);
 307   auto* item = list->CreateAndAppendItem<DrawingDisplayItem>();
 308   item->SetNew(picture);
 309   list->Finalize();
 310   memory_usage = list->ApproximateMemoryUsage();
 311   EXPECT_GE(memory_usage, picture_size);
 312   EXPECT_LE(memory_usage, 2 * picture_size);
 313
 314   // Using no cached picture, we should still get the right size.
 315   list = DisplayItemList::Create(layer_rect, false);
 316   item = list->CreateAndAppendItem<DrawingDisplayItem>();
 317   item->SetNew(picture);
 318   list->Finalize();
 319   memory_usage = list->ApproximateMemoryUsage();
 320   EXPECT_GE(memory_usage, picture_size);
 321   EXPECT_LE(memory_usage, 2 * picture_size);
 322
 323   // To avoid double counting, we expect zero size to be computed if both the
 324   // picture and items are retained (currently this only happens due to certain
 325   // categories being traced).
 326   DisplayItemListSettings settings;
 327   settings.use_cached_picture = true;
 328   list = new DisplayItemList(layer_rect, settings, true);
 329   item = list->CreateAndAppendItem<DrawingDisplayItem>();
 330   item->SetNew(picture);
 331   list->Finalize();
 332   memory_usage = list->ApproximateMemoryUsage();
 333   EXPECT_EQ(static_cast<size_t>(0), memory_usage);
 334 }
 335
 336 }  // namespace cc