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/resources/picture_layer_tiling.h" 6 7 #include <limits> 8 #include <set> 9 10 #include "cc/base/math_util.h" 11 #include "cc/resources/picture_layer_tiling_set.h" 12 #include "cc/test/fake_output_surface.h" 13 #include "cc/test/fake_output_surface_client.h" 14 #include "cc/test/fake_picture_layer_tiling_client.h" 15 #include "cc/test/test_context_provider.h" 16 #include "cc/test/test_shared_bitmap_manager.h" 17 #include "testing/gtest/include/gtest/gtest.h" 18 #include "ui/gfx/rect_conversions.h" 19 #include "ui/gfx/size_conversions.h" 20 21 namespace cc { 22 namespace { 23 24 static gfx::Rect ViewportInLayerSpace( 25 const gfx::Transform& transform, 26 const gfx::Size& device_viewport) { 27 28 gfx::Transform inverse; 29 if (!transform.GetInverse(&inverse)) 30 return gfx::Rect(); 31 32 gfx::RectF viewport_in_layer_space = MathUtil::ProjectClippedRect( 33 inverse, gfx::RectF(gfx::Point(0, 0), device_viewport)); 34 return ToEnclosingRect(viewport_in_layer_space); 35 } 36 37 static void UpdateAllTilePriorities(PictureLayerTilingSet* set, 38 WhichTree tree, 39 const gfx::Rect& visible_layer_rect, 40 float layer_contents_scale, 41 double current_frame_time_in_seconds) { 42 for (size_t i = 0; i < set->num_tilings(); ++i) { 43 set->tiling_at(i)->UpdateTilePriorities(tree, 44 visible_layer_rect, 45 layer_contents_scale, 46 current_frame_time_in_seconds, 47 Occlusion()); 48 } 49 } 50 51 class TestablePictureLayerTiling : public PictureLayerTiling { 52 public: 53 using PictureLayerTiling::SetLiveTilesRect; 54 using PictureLayerTiling::TileAt; 55 56 static scoped_ptr<TestablePictureLayerTiling> Create( 57 float contents_scale, 58 const gfx::Size& layer_bounds, 59 PictureLayerTilingClient* client) { 60 return make_scoped_ptr(new TestablePictureLayerTiling( 61 contents_scale, 62 layer_bounds, 63 client)); 64 } 65 66 gfx::Rect live_tiles_rect() const { return live_tiles_rect_; } 67 68 using PictureLayerTiling::ComputeSkewport; 69 70 protected: 71 TestablePictureLayerTiling(float contents_scale, 72 const gfx::Size& layer_bounds, 73 PictureLayerTilingClient* client) 74 : PictureLayerTiling(contents_scale, layer_bounds, client) { } 75 }; 76 77 class PictureLayerTilingIteratorTest : public testing::Test { 78 public: 79 PictureLayerTilingIteratorTest() {} 80 virtual ~PictureLayerTilingIteratorTest() {} 81 82 void Initialize(const gfx::Size& tile_size, 83 float contents_scale, 84 const gfx::Size& layer_bounds) { 85 client_.SetTileSize(tile_size); 86 client_.set_tree(PENDING_TREE); 87 tiling_ = TestablePictureLayerTiling::Create(contents_scale, 88 layer_bounds, 89 &client_); 90 } 91 92 void SetLiveRectAndVerifyTiles(const gfx::Rect& live_tiles_rect) { 93 tiling_->SetLiveTilesRect(live_tiles_rect); 94 95 std::vector<Tile*> tiles = tiling_->AllTilesForTesting(); 96 for (std::vector<Tile*>::iterator iter = tiles.begin(); 97 iter != tiles.end(); 98 ++iter) { 99 EXPECT_TRUE(live_tiles_rect.Intersects((*iter)->content_rect())); 100 } 101 } 102 103 void VerifyTilesExactlyCoverRect( 104 float rect_scale, 105 const gfx::Rect& request_rect, 106 const gfx::Rect& expect_rect) { 107 EXPECT_TRUE(request_rect.Contains(expect_rect)); 108 109 // Iterators are not valid if this ratio is too large (i.e. the 110 // tiling is too high-res for a low-res destination rect.) This is an 111 // artifact of snapping geometry to integer coordinates and then mapping 112 // back to floating point texture coordinates. 113 float dest_to_contents_scale = tiling_->contents_scale() / rect_scale; 114 ASSERT_LE(dest_to_contents_scale, 2.0); 115 116 Region remaining = expect_rect; 117 for (PictureLayerTiling::CoverageIterator 118 iter(tiling_.get(), rect_scale, request_rect); 119 iter; 120 ++iter) { 121 // Geometry cannot overlap previous geometry at all 122 gfx::Rect geometry = iter.geometry_rect(); 123 EXPECT_TRUE(expect_rect.Contains(geometry)); 124 EXPECT_TRUE(remaining.Contains(geometry)); 125 remaining.Subtract(geometry); 126 127 // Sanity check that texture coords are within the texture rect. 128 gfx::RectF texture_rect = iter.texture_rect(); 129 EXPECT_GE(texture_rect.x(), 0); 130 EXPECT_GE(texture_rect.y(), 0); 131 EXPECT_LE(texture_rect.right(), client_.TileSize().width()); 132 EXPECT_LE(texture_rect.bottom(), client_.TileSize().height()); 133 134 EXPECT_EQ(iter.texture_size(), client_.TileSize()); 135 } 136 137 // The entire rect must be filled by geometry from the tiling. 138 EXPECT_TRUE(remaining.IsEmpty()); 139 } 140 141 void VerifyTilesExactlyCoverRect(float rect_scale, const gfx::Rect& rect) { 142 VerifyTilesExactlyCoverRect(rect_scale, rect, rect); 143 } 144 145 void VerifyTiles( 146 float rect_scale, 147 const gfx::Rect& rect, 148 base::Callback<void(Tile* tile, 149 const gfx::Rect& geometry_rect)> callback) { 150 VerifyTiles(tiling_.get(), 151 rect_scale, 152 rect, 153 callback); 154 } 155 156 void VerifyTiles( 157 PictureLayerTiling* tiling, 158 float rect_scale, 159 const gfx::Rect& rect, 160 base::Callback<void(Tile* tile, 161 const gfx::Rect& geometry_rect)> callback) { 162 Region remaining = rect; 163 for (PictureLayerTiling::CoverageIterator iter(tiling, rect_scale, rect); 164 iter; 165 ++iter) { 166 remaining.Subtract(iter.geometry_rect()); 167 callback.Run(*iter, iter.geometry_rect()); 168 } 169 EXPECT_TRUE(remaining.IsEmpty()); 170 } 171 172 void VerifyTilesCoverNonContainedRect(float rect_scale, 173 const gfx::Rect& dest_rect) { 174 float dest_to_contents_scale = tiling_->contents_scale() / rect_scale; 175 gfx::Rect clamped_rect = gfx::ScaleToEnclosingRect( 176 gfx::Rect(tiling_->tiling_size()), 1.f / dest_to_contents_scale); 177 clamped_rect.Intersect(dest_rect); 178 VerifyTilesExactlyCoverRect(rect_scale, dest_rect, clamped_rect); 179 } 180 181 void set_max_tiles_for_interest_area(size_t area) { 182 client_.set_max_tiles_for_interest_area(area); 183 } 184 185 protected: 186 FakePictureLayerTilingClient client_; 187 scoped_ptr<TestablePictureLayerTiling> tiling_; 188 189 private: 190 DISALLOW_COPY_AND_ASSIGN(PictureLayerTilingIteratorTest); 191 }; 192 193 TEST_F(PictureLayerTilingIteratorTest, ResizeDeletesTiles) { 194 // Verifies that a resize with invalidation for newly exposed pixels will 195 // deletes tiles that intersect that invalidation. 196 gfx::Size tile_size(100, 100); 197 gfx::Size original_layer_size(10, 10); 198 Initialize(tile_size, 1.f, original_layer_size); 199 SetLiveRectAndVerifyTiles(gfx::Rect(original_layer_size)); 200 201 // Tiling only has one tile, since its total size is less than one. 202 EXPECT_TRUE(tiling_->TileAt(0, 0)); 203 204 // Stop creating tiles so that any invalidations are left as holes. 205 client_.set_allow_create_tile(false); 206 207 Region invalidation = 208 SubtractRegions(gfx::Rect(tile_size), gfx::Rect(original_layer_size)); 209 tiling_->UpdateTilesToCurrentPile(invalidation, gfx::Size(200, 200)); 210 EXPECT_FALSE(tiling_->TileAt(0, 0)); 211 } 212 213 TEST_F(PictureLayerTilingIteratorTest, CreateMissingTilesStaysInsideLiveRect) { 214 // The tiling has three rows and columns. 215 Initialize(gfx::Size(100, 100), 1, gfx::Size(250, 250)); 216 EXPECT_EQ(3, tiling_->TilingDataForTesting().num_tiles_x()); 217 EXPECT_EQ(3, tiling_->TilingDataForTesting().num_tiles_y()); 218 219 // The live tiles rect is at the very edge of the right-most and 220 // bottom-most tiles. Their border pixels would still be inside the live 221 // tiles rect, but the tiles should not exist just for that. 222 int right = tiling_->TilingDataForTesting().TileBounds(2, 2).x(); 223 int bottom = tiling_->TilingDataForTesting().TileBounds(2, 2).y(); 224 225 SetLiveRectAndVerifyTiles(gfx::Rect(right, bottom)); 226 EXPECT_FALSE(tiling_->TileAt(2, 0)); 227 EXPECT_FALSE(tiling_->TileAt(2, 1)); 228 EXPECT_FALSE(tiling_->TileAt(2, 2)); 229 EXPECT_FALSE(tiling_->TileAt(1, 2)); 230 EXPECT_FALSE(tiling_->TileAt(0, 2)); 231 232 // Verify CreateMissingTilesInLiveTilesRect respects this. 233 tiling_->CreateMissingTilesInLiveTilesRect(); 234 EXPECT_FALSE(tiling_->TileAt(2, 0)); 235 EXPECT_FALSE(tiling_->TileAt(2, 1)); 236 EXPECT_FALSE(tiling_->TileAt(2, 2)); 237 EXPECT_FALSE(tiling_->TileAt(1, 2)); 238 EXPECT_FALSE(tiling_->TileAt(0, 2)); 239 } 240 241 TEST_F(PictureLayerTilingIteratorTest, ResizeTilingOverTileBorders) { 242 // The tiling has four rows and three columns. 243 Initialize(gfx::Size(100, 100), 1, gfx::Size(250, 350)); 244 EXPECT_EQ(3, tiling_->TilingDataForTesting().num_tiles_x()); 245 EXPECT_EQ(4, tiling_->TilingDataForTesting().num_tiles_y()); 246 247 // The live tiles rect covers the whole tiling. 248 SetLiveRectAndVerifyTiles(gfx::Rect(250, 350)); 249 250 // Tiles in the bottom row and right column exist. 251 EXPECT_TRUE(tiling_->TileAt(2, 0)); 252 EXPECT_TRUE(tiling_->TileAt(2, 1)); 253 EXPECT_TRUE(tiling_->TileAt(2, 2)); 254 EXPECT_TRUE(tiling_->TileAt(2, 3)); 255 EXPECT_TRUE(tiling_->TileAt(1, 3)); 256 EXPECT_TRUE(tiling_->TileAt(0, 3)); 257 258 int right = tiling_->TilingDataForTesting().TileBounds(2, 2).x(); 259 int bottom = tiling_->TilingDataForTesting().TileBounds(2, 3).y(); 260 261 // Shrink the tiling so that the last tile row/column is entirely in the 262 // border pixels of the interior tiles. That row/column is removed. 263 Region invalidation; 264 tiling_->UpdateTilesToCurrentPile(invalidation, 265 gfx::Size(right + 1, bottom + 1)); 266 EXPECT_EQ(2, tiling_->TilingDataForTesting().num_tiles_x()); 267 EXPECT_EQ(3, tiling_->TilingDataForTesting().num_tiles_y()); 268 269 // The live tiles rect was clamped to the pile size. 270 EXPECT_EQ(gfx::Rect(right + 1, bottom + 1), tiling_->live_tiles_rect()); 271 272 // Since the row/column is gone, the tiles should be gone too. 273 EXPECT_FALSE(tiling_->TileAt(2, 0)); 274 EXPECT_FALSE(tiling_->TileAt(2, 1)); 275 EXPECT_FALSE(tiling_->TileAt(2, 2)); 276 EXPECT_FALSE(tiling_->TileAt(2, 3)); 277 EXPECT_FALSE(tiling_->TileAt(1, 3)); 278 EXPECT_FALSE(tiling_->TileAt(0, 3)); 279 280 // Growing outside the current right/bottom tiles border pixels should create 281 // the tiles again, even though the live rect has not changed size. 282 tiling_->UpdateTilesToCurrentPile(invalidation, 283 gfx::Size(right + 2, bottom + 2)); 284 EXPECT_EQ(3, tiling_->TilingDataForTesting().num_tiles_x()); 285 EXPECT_EQ(4, tiling_->TilingDataForTesting().num_tiles_y()); 286 287 // Not changed. 288 EXPECT_EQ(gfx::Rect(right + 1, bottom + 1), tiling_->live_tiles_rect()); 289 290 // The last row/column tiles are inside the live tiles rect. 291 EXPECT_TRUE(gfx::Rect(right + 1, bottom + 1).Intersects( 292 tiling_->TilingDataForTesting().TileBounds(2, 0))); 293 EXPECT_TRUE(gfx::Rect(right + 1, bottom + 1).Intersects( 294 tiling_->TilingDataForTesting().TileBounds(0, 3))); 295 296 EXPECT_TRUE(tiling_->TileAt(2, 0)); 297 EXPECT_TRUE(tiling_->TileAt(2, 1)); 298 EXPECT_TRUE(tiling_->TileAt(2, 2)); 299 EXPECT_TRUE(tiling_->TileAt(2, 3)); 300 EXPECT_TRUE(tiling_->TileAt(1, 3)); 301 EXPECT_TRUE(tiling_->TileAt(0, 3)); 302 } 303 304 TEST_F(PictureLayerTilingIteratorTest, ResizeLiveTileRectOverTileBorders) { 305 // The tiling has three rows and columns. 306 Initialize(gfx::Size(100, 100), 1, gfx::Size(250, 350)); 307 EXPECT_EQ(3, tiling_->TilingDataForTesting().num_tiles_x()); 308 EXPECT_EQ(4, tiling_->TilingDataForTesting().num_tiles_y()); 309 310 // The live tiles rect covers the whole tiling. 311 SetLiveRectAndVerifyTiles(gfx::Rect(250, 350)); 312 313 // Tiles in the bottom row and right column exist. 314 EXPECT_TRUE(tiling_->TileAt(2, 0)); 315 EXPECT_TRUE(tiling_->TileAt(2, 1)); 316 EXPECT_TRUE(tiling_->TileAt(2, 2)); 317 EXPECT_TRUE(tiling_->TileAt(2, 3)); 318 EXPECT_TRUE(tiling_->TileAt(1, 3)); 319 EXPECT_TRUE(tiling_->TileAt(0, 3)); 320 321 // Shrink the live tiles rect to the very edge of the right-most and 322 // bottom-most tiles. Their border pixels would still be inside the live 323 // tiles rect, but the tiles should not exist just for that. 324 int right = tiling_->TilingDataForTesting().TileBounds(2, 3).x(); 325 int bottom = tiling_->TilingDataForTesting().TileBounds(2, 3).y(); 326 327 SetLiveRectAndVerifyTiles(gfx::Rect(right, bottom)); 328 EXPECT_FALSE(tiling_->TileAt(2, 0)); 329 EXPECT_FALSE(tiling_->TileAt(2, 1)); 330 EXPECT_FALSE(tiling_->TileAt(2, 2)); 331 EXPECT_FALSE(tiling_->TileAt(2, 3)); 332 EXPECT_FALSE(tiling_->TileAt(1, 3)); 333 EXPECT_FALSE(tiling_->TileAt(0, 3)); 334 335 // Including the bottom row and right column again, should create the tiles. 336 SetLiveRectAndVerifyTiles(gfx::Rect(right + 1, bottom + 1)); 337 EXPECT_TRUE(tiling_->TileAt(2, 0)); 338 EXPECT_TRUE(tiling_->TileAt(2, 1)); 339 EXPECT_TRUE(tiling_->TileAt(2, 2)); 340 EXPECT_TRUE(tiling_->TileAt(2, 3)); 341 EXPECT_TRUE(tiling_->TileAt(1, 2)); 342 EXPECT_TRUE(tiling_->TileAt(0, 2)); 343 344 // Shrink the live tiles rect to the very edge of the left-most and 345 // top-most tiles. Their border pixels would still be inside the live 346 // tiles rect, but the tiles should not exist just for that. 347 int left = tiling_->TilingDataForTesting().TileBounds(0, 0).right(); 348 int top = tiling_->TilingDataForTesting().TileBounds(0, 0).bottom(); 349 350 SetLiveRectAndVerifyTiles(gfx::Rect(left, top, 250 - left, 350 - top)); 351 EXPECT_FALSE(tiling_->TileAt(0, 3)); 352 EXPECT_FALSE(tiling_->TileAt(0, 2)); 353 EXPECT_FALSE(tiling_->TileAt(0, 1)); 354 EXPECT_FALSE(tiling_->TileAt(0, 0)); 355 EXPECT_FALSE(tiling_->TileAt(1, 0)); 356 EXPECT_FALSE(tiling_->TileAt(2, 0)); 357 358 // Including the top row and left column again, should create the tiles. 359 SetLiveRectAndVerifyTiles( 360 gfx::Rect(left - 1, top - 1, 250 - left, 350 - top)); 361 EXPECT_TRUE(tiling_->TileAt(0, 3)); 362 EXPECT_TRUE(tiling_->TileAt(0, 2)); 363 EXPECT_TRUE(tiling_->TileAt(0, 1)); 364 EXPECT_TRUE(tiling_->TileAt(0, 0)); 365 EXPECT_TRUE(tiling_->TileAt(1, 0)); 366 EXPECT_TRUE(tiling_->TileAt(2, 0)); 367 } 368 369 TEST_F(PictureLayerTilingIteratorTest, ResizeLiveTileRectOverSameTiles) { 370 // The tiling has four rows and three columns. 371 Initialize(gfx::Size(100, 100), 1, gfx::Size(250, 350)); 372 EXPECT_EQ(3, tiling_->TilingDataForTesting().num_tiles_x()); 373 EXPECT_EQ(4, tiling_->TilingDataForTesting().num_tiles_y()); 374 375 // The live tiles rect covers the whole tiling. 376 SetLiveRectAndVerifyTiles(gfx::Rect(250, 350)); 377 378 // All tiles exist. 379 for (int i = 0; i < 3; ++i) { 380 for (int j = 0; j < 4; ++j) 381 EXPECT_TRUE(tiling_->TileAt(i, j)) << i << "," << j; 382 } 383 384 // Shrink the live tiles rect, but still cover all the tiles. 385 SetLiveRectAndVerifyTiles(gfx::Rect(1, 1, 249, 349)); 386 387 // All tiles still exist. 388 for (int i = 0; i < 3; ++i) { 389 for (int j = 0; j < 4; ++j) 390 EXPECT_TRUE(tiling_->TileAt(i, j)) << i << "," << j; 391 } 392 393 // Grow the live tiles rect, but still cover all the same tiles. 394 SetLiveRectAndVerifyTiles(gfx::Rect(0, 0, 250, 350)); 395 396 // All tiles still exist. 397 for (int i = 0; i < 3; ++i) { 398 for (int j = 0; j < 4; ++j) 399 EXPECT_TRUE(tiling_->TileAt(i, j)) << i << "," << j; 400 } 401 } 402 403 TEST_F(PictureLayerTilingIteratorTest, ResizeOverBorderPixelsDeletesTiles) { 404 // Verifies that a resize with invalidation for newly exposed pixels will 405 // deletes tiles that intersect that invalidation. 406 gfx::Size tile_size(100, 100); 407 gfx::Size original_layer_size(99, 99); 408 Initialize(tile_size, 1.f, original_layer_size); 409 SetLiveRectAndVerifyTiles(gfx::Rect(original_layer_size)); 410 411 // Tiling only has one tile, since its total size is less than one. 412 EXPECT_TRUE(tiling_->TileAt(0, 0)); 413 414 // Stop creating tiles so that any invalidations are left as holes. 415 client_.set_allow_create_tile(false); 416 417 Region invalidation = 418 SubtractRegions(gfx::Rect(tile_size), gfx::Rect(original_layer_size)); 419 tiling_->UpdateTilesToCurrentPile(invalidation, gfx::Size(200, 200)); 420 EXPECT_FALSE(tiling_->TileAt(0, 0)); 421 422 // The original tile was the same size after resize, but it would include new 423 // border pixels. 424 EXPECT_EQ(gfx::Rect(original_layer_size), 425 tiling_->TilingDataForTesting().TileBounds(0, 0)); 426 } 427 428 TEST_F(PictureLayerTilingIteratorTest, LiveTilesExactlyCoverLiveTileRect) { 429 Initialize(gfx::Size(100, 100), 1, gfx::Size(1099, 801)); 430 SetLiveRectAndVerifyTiles(gfx::Rect(100, 100)); 431 SetLiveRectAndVerifyTiles(gfx::Rect(101, 99)); 432 SetLiveRectAndVerifyTiles(gfx::Rect(1099, 1)); 433 SetLiveRectAndVerifyTiles(gfx::Rect(1, 801)); 434 SetLiveRectAndVerifyTiles(gfx::Rect(1099, 1)); 435 SetLiveRectAndVerifyTiles(gfx::Rect(201, 800)); 436 } 437 438 TEST_F(PictureLayerTilingIteratorTest, IteratorCoversLayerBoundsNoScale) { 439 Initialize(gfx::Size(100, 100), 1, gfx::Size(1099, 801)); 440 VerifyTilesExactlyCoverRect(1, gfx::Rect()); 441 VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1099, 801)); 442 VerifyTilesExactlyCoverRect(1, gfx::Rect(52, 83, 789, 412)); 443 444 // With borders, a size of 3x3 = 1 pixel of content. 445 Initialize(gfx::Size(3, 3), 1, gfx::Size(10, 10)); 446 VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1, 1)); 447 VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 2, 2)); 448 VerifyTilesExactlyCoverRect(1, gfx::Rect(1, 1, 2, 2)); 449 VerifyTilesExactlyCoverRect(1, gfx::Rect(3, 2, 5, 2)); 450 } 451 452 TEST_F(PictureLayerTilingIteratorTest, IteratorCoversLayerBoundsTilingScale) { 453 Initialize(gfx::Size(200, 100), 2.0f, gfx::Size(1005, 2010)); 454 VerifyTilesExactlyCoverRect(1, gfx::Rect()); 455 VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1005, 2010)); 456 VerifyTilesExactlyCoverRect(1, gfx::Rect(50, 112, 512, 381)); 457 458 Initialize(gfx::Size(3, 3), 2.0f, gfx::Size(10, 10)); 459 VerifyTilesExactlyCoverRect(1, gfx::Rect()); 460 VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1, 1)); 461 VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 2, 2)); 462 VerifyTilesExactlyCoverRect(1, gfx::Rect(1, 1, 2, 2)); 463 VerifyTilesExactlyCoverRect(1, gfx::Rect(3, 2, 5, 2)); 464 465 Initialize(gfx::Size(100, 200), 0.5f, gfx::Size(1005, 2010)); 466 VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1005, 2010)); 467 VerifyTilesExactlyCoverRect(1, gfx::Rect(50, 112, 512, 381)); 468 469 Initialize(gfx::Size(150, 250), 0.37f, gfx::Size(1005, 2010)); 470 VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1005, 2010)); 471 VerifyTilesExactlyCoverRect(1, gfx::Rect(50, 112, 512, 381)); 472 473 Initialize(gfx::Size(312, 123), 0.01f, gfx::Size(1005, 2010)); 474 VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1005, 2010)); 475 VerifyTilesExactlyCoverRect(1, gfx::Rect(50, 112, 512, 381)); 476 } 477 478 TEST_F(PictureLayerTilingIteratorTest, IteratorCoversLayerBoundsBothScale) { 479 Initialize(gfx::Size(50, 50), 4.0f, gfx::Size(800, 600)); 480 VerifyTilesExactlyCoverRect(2.0f, gfx::Rect()); 481 VerifyTilesExactlyCoverRect(2.0f, gfx::Rect(0, 0, 1600, 1200)); 482 VerifyTilesExactlyCoverRect(2.0f, gfx::Rect(512, 365, 253, 182)); 483 484 float scale = 6.7f; 485 gfx::Size bounds(800, 600); 486 gfx::Rect full_rect(gfx::ToCeiledSize(gfx::ScaleSize(bounds, scale))); 487 Initialize(gfx::Size(256, 512), 5.2f, bounds); 488 VerifyTilesExactlyCoverRect(scale, full_rect); 489 VerifyTilesExactlyCoverRect(scale, gfx::Rect(2014, 1579, 867, 1033)); 490 } 491 492 TEST_F(PictureLayerTilingIteratorTest, IteratorEmptyRect) { 493 Initialize(gfx::Size(100, 100), 1.0f, gfx::Size(800, 600)); 494 495 gfx::Rect empty; 496 PictureLayerTiling::CoverageIterator iter(tiling_.get(), 1.0f, empty); 497 EXPECT_FALSE(iter); 498 } 499 500 TEST_F(PictureLayerTilingIteratorTest, NonIntersectingRect) { 501 Initialize(gfx::Size(100, 100), 1.0f, gfx::Size(800, 600)); 502 gfx::Rect non_intersecting(1000, 1000, 50, 50); 503 PictureLayerTiling::CoverageIterator iter(tiling_.get(), 1, non_intersecting); 504 EXPECT_FALSE(iter); 505 } 506 507 TEST_F(PictureLayerTilingIteratorTest, LayerEdgeTextureCoordinates) { 508 Initialize(gfx::Size(300, 300), 1.0f, gfx::Size(256, 256)); 509 // All of these sizes are 256x256, scaled and ceiled. 510 VerifyTilesExactlyCoverRect(1.0f, gfx::Rect(0, 0, 256, 256)); 511 VerifyTilesExactlyCoverRect(0.8f, gfx::Rect(0, 0, 205, 205)); 512 VerifyTilesExactlyCoverRect(1.2f, gfx::Rect(0, 0, 308, 308)); 513 } 514 515 TEST_F(PictureLayerTilingIteratorTest, NonContainedDestRect) { 516 Initialize(gfx::Size(100, 100), 1.0f, gfx::Size(400, 400)); 517 518 // Too large in all dimensions 519 VerifyTilesCoverNonContainedRect(1.0f, gfx::Rect(-1000, -1000, 2000, 2000)); 520 VerifyTilesCoverNonContainedRect(1.5f, gfx::Rect(-1000, -1000, 2000, 2000)); 521 VerifyTilesCoverNonContainedRect(0.5f, gfx::Rect(-1000, -1000, 2000, 2000)); 522 523 // Partially covering content, but too large 524 VerifyTilesCoverNonContainedRect(1.0f, gfx::Rect(-1000, 100, 2000, 100)); 525 VerifyTilesCoverNonContainedRect(1.5f, gfx::Rect(-1000, 100, 2000, 100)); 526 VerifyTilesCoverNonContainedRect(0.5f, gfx::Rect(-1000, 100, 2000, 100)); 527 } 528 529 TEST(PictureLayerTilingTest, SkewportLimits) { 530 FakePictureLayerTilingClient client; 531 client.set_skewport_extrapolation_limit_in_content_pixels(75); 532 client.set_tree(ACTIVE_TREE); 533 scoped_ptr<TestablePictureLayerTiling> tiling; 534 535 gfx::Rect viewport(0, 0, 100, 100); 536 gfx::Size layer_bounds(200, 200); 537 538 client.SetTileSize(gfx::Size(100, 100)); 539 tiling = TestablePictureLayerTiling::Create(1.0f, layer_bounds, &client); 540 541 tiling->UpdateTilePriorities(ACTIVE_TREE, viewport, 1.f, 1.0, Occlusion()); 542 543 // Move viewport down 50 pixels in 0.5 seconds. 544 gfx::Rect down_skewport = 545 tiling->ComputeSkewport(1.5, gfx::Rect(0, 50, 100, 100)); 546 547 EXPECT_EQ(0, down_skewport.x()); 548 EXPECT_EQ(50, down_skewport.y()); 549 EXPECT_EQ(100, down_skewport.width()); 550 EXPECT_EQ(175, down_skewport.height()); 551 EXPECT_TRUE(down_skewport.Contains(gfx::Rect(0, 50, 100, 100))); 552 553 // Move viewport down 50 and right 10 pixels. 554 gfx::Rect down_right_skewport = 555 tiling->ComputeSkewport(1.5, gfx::Rect(10, 50, 100, 100)); 556 557 EXPECT_EQ(10, down_right_skewport.x()); 558 EXPECT_EQ(50, down_right_skewport.y()); 559 EXPECT_EQ(120, down_right_skewport.width()); 560 EXPECT_EQ(175, down_right_skewport.height()); 561 EXPECT_TRUE(down_right_skewport.Contains(gfx::Rect(10, 50, 100, 100))); 562 563 // Move viewport left. 564 gfx::Rect left_skewport = 565 tiling->ComputeSkewport(1.5, gfx::Rect(-50, 0, 100, 100)); 566 567 EXPECT_EQ(-125, left_skewport.x()); 568 EXPECT_EQ(0, left_skewport.y()); 569 EXPECT_EQ(175, left_skewport.width()); 570 EXPECT_EQ(100, left_skewport.height()); 571 EXPECT_TRUE(left_skewport.Contains(gfx::Rect(-50, 0, 100, 100))); 572 573 // Expand viewport. 574 gfx::Rect expand_skewport = 575 tiling->ComputeSkewport(1.5, gfx::Rect(-50, -50, 200, 200)); 576 577 // x and y moved by -75 (-50 - 75 = -125). 578 // right side and bottom side moved by 75 [(350 - 125) - (200 - 50) = 75]. 579 EXPECT_EQ(-125, expand_skewport.x()); 580 EXPECT_EQ(-125, expand_skewport.y()); 581 EXPECT_EQ(350, expand_skewport.width()); 582 EXPECT_EQ(350, expand_skewport.height()); 583 EXPECT_TRUE(expand_skewport.Contains(gfx::Rect(-50, -50, 200, 200))); 584 585 // Expand the viewport past the limit. 586 gfx::Rect big_expand_skewport = 587 tiling->ComputeSkewport(1.5, gfx::Rect(-500, -500, 1500, 1500)); 588 589 EXPECT_EQ(-575, big_expand_skewport.x()); 590 EXPECT_EQ(-575, big_expand_skewport.y()); 591 EXPECT_EQ(1650, big_expand_skewport.width()); 592 EXPECT_EQ(1650, big_expand_skewport.height()); 593 EXPECT_TRUE(big_expand_skewport.Contains(gfx::Rect(-500, -500, 1500, 1500))); 594 } 595 596 TEST(PictureLayerTilingTest, ComputeSkewport) { 597 FakePictureLayerTilingClient client; 598 scoped_ptr<TestablePictureLayerTiling> tiling; 599 600 gfx::Rect viewport(0, 0, 100, 100); 601 gfx::Size layer_bounds(200, 200); 602 603 client.SetTileSize(gfx::Size(100, 100)); 604 client.set_tree(ACTIVE_TREE); 605 tiling = TestablePictureLayerTiling::Create(1.0f, layer_bounds, &client); 606 607 tiling->UpdateTilePriorities(ACTIVE_TREE, viewport, 1.f, 1.0, Occlusion()); 608 609 // Move viewport down 50 pixels in 0.5 seconds. 610 gfx::Rect down_skewport = 611 tiling->ComputeSkewport(1.5, gfx::Rect(0, 50, 100, 100)); 612 613 EXPECT_EQ(0, down_skewport.x()); 614 EXPECT_EQ(50, down_skewport.y()); 615 EXPECT_EQ(100, down_skewport.width()); 616 EXPECT_EQ(200, down_skewport.height()); 617 618 // Shrink viewport. 619 gfx::Rect shrink_skewport = 620 tiling->ComputeSkewport(1.5, gfx::Rect(25, 25, 50, 50)); 621 622 EXPECT_EQ(25, shrink_skewport.x()); 623 EXPECT_EQ(25, shrink_skewport.y()); 624 EXPECT_EQ(50, shrink_skewport.width()); 625 EXPECT_EQ(50, shrink_skewport.height()); 626 627 // Move viewport down 50 and right 10 pixels. 628 gfx::Rect down_right_skewport = 629 tiling->ComputeSkewport(1.5, gfx::Rect(10, 50, 100, 100)); 630 631 EXPECT_EQ(10, down_right_skewport.x()); 632 EXPECT_EQ(50, down_right_skewport.y()); 633 EXPECT_EQ(120, down_right_skewport.width()); 634 EXPECT_EQ(200, down_right_skewport.height()); 635 636 // Move viewport left. 637 gfx::Rect left_skewport = 638 tiling->ComputeSkewport(1.5, gfx::Rect(-20, 0, 100, 100)); 639 640 EXPECT_EQ(-60, left_skewport.x()); 641 EXPECT_EQ(0, left_skewport.y()); 642 EXPECT_EQ(140, left_skewport.width()); 643 EXPECT_EQ(100, left_skewport.height()); 644 645 // Expand viewport in 0.2 seconds. 646 gfx::Rect expanded_skewport = 647 tiling->ComputeSkewport(1.2, gfx::Rect(-5, -5, 110, 110)); 648 649 EXPECT_EQ(-30, expanded_skewport.x()); 650 EXPECT_EQ(-30, expanded_skewport.y()); 651 EXPECT_EQ(160, expanded_skewport.width()); 652 EXPECT_EQ(160, expanded_skewport.height()); 653 } 654 655 TEST(PictureLayerTilingTest, ViewportDistanceWithScale) { 656 FakePictureLayerTilingClient client; 657 scoped_ptr<TestablePictureLayerTiling> tiling; 658 659 gfx::Rect viewport(0, 0, 100, 100); 660 gfx::Size layer_bounds(1500, 1500); 661 662 client.SetTileSize(gfx::Size(10, 10)); 663 client.set_tree(ACTIVE_TREE); 664 665 // Tiling at 0.25 scale: this should create 47x47 tiles of size 10x10. 666 // The reason is that each tile has a one pixel border, so tile at (1, 2) 667 // for instance begins at (8, 16) pixels. So tile at (46, 46) will begin at 668 // (368, 368) and extend to the end of 1500 * 0.25 = 375 edge of the 669 // tiling. 670 tiling = TestablePictureLayerTiling::Create(0.25f, layer_bounds, &client); 671 gfx::Rect viewport_in_content_space = 672 gfx::ToEnclosedRect(gfx::ScaleRect(viewport, 0.25f)); 673 674 tiling->UpdateTilePriorities(ACTIVE_TREE, viewport, 1.f, 1.0, Occlusion()); 675 676 gfx::Rect soon_rect = viewport; 677 soon_rect.Inset(-312.f, -312.f, -312.f, -312.f); 678 gfx::Rect soon_rect_in_content_space = 679 gfx::ToEnclosedRect(gfx::ScaleRect(soon_rect, 0.25f)); 680 681 // Sanity checks. 682 for (int i = 0; i < 47; ++i) { 683 for (int j = 0; j < 47; ++j) { 684 EXPECT_TRUE(tiling->TileAt(i, j)) << "i: " << i << " j: " << j; 685 } 686 } 687 for (int i = 0; i < 47; ++i) { 688 EXPECT_FALSE(tiling->TileAt(i, 47)) << "i: " << i; 689 EXPECT_FALSE(tiling->TileAt(47, i)) << "i: " << i; 690 } 691 692 // No movement in the viewport implies that tiles will either be NOW 693 // or EVENTUALLY, with the exception of tiles that are between 0 and 312 694 // pixels away from the viewport, which will be in the SOON bin. 695 bool have_now = false; 696 bool have_eventually = false; 697 bool have_soon = false; 698 for (int i = 0; i < 47; ++i) { 699 for (int j = 0; j < 47; ++j) { 700 Tile* tile = tiling->TileAt(i, j); 701 TilePriority priority = tile->priority(ACTIVE_TREE); 702 703 gfx::Rect tile_rect = tiling->TilingDataForTesting().TileBounds(i, j); 704 if (viewport_in_content_space.Intersects(tile_rect)) { 705 EXPECT_EQ(TilePriority::NOW, priority.priority_bin); 706 EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible); 707 have_now = true; 708 } else if (soon_rect_in_content_space.Intersects(tile_rect)) { 709 EXPECT_EQ(TilePriority::SOON, priority.priority_bin); 710 have_soon = true; 711 } else { 712 EXPECT_EQ(TilePriority::EVENTUALLY, priority.priority_bin); 713 EXPECT_GT(priority.distance_to_visible, 0.f); 714 have_eventually = true; 715 } 716 } 717 } 718 719 EXPECT_TRUE(have_now); 720 EXPECT_TRUE(have_soon); 721 EXPECT_TRUE(have_eventually); 722 723 // Spot check some distances. 724 // Tile at 5, 1 should begin at 41x9 in content space (without borders), 725 // so the distance to a viewport that ends at 25x25 in content space 726 // should be 17 (41 - 25 + 1). In layer space, then that should be 727 // 17 / 0.25 = 68 pixels. 728 729 // We can verify that the content rect (with borders) is one pixel off 730 // 41,9 8x8 on all sides. 731 EXPECT_EQ(tiling->TileAt(5, 1)->content_rect().ToString(), "40,8 10x10"); 732 733 TilePriority priority = tiling->TileAt(5, 1)->priority(ACTIVE_TREE); 734 EXPECT_FLOAT_EQ(68.f, priority.distance_to_visible); 735 736 priority = tiling->TileAt(2, 5)->priority(ACTIVE_TREE); 737 EXPECT_FLOAT_EQ(68.f, priority.distance_to_visible); 738 739 priority = tiling->TileAt(3, 4)->priority(ACTIVE_TREE); 740 EXPECT_FLOAT_EQ(40.f, priority.distance_to_visible); 741 742 // Move the viewport down 40 pixels. 743 viewport = gfx::Rect(0, 40, 100, 100); 744 viewport_in_content_space = 745 gfx::ToEnclosedRect(gfx::ScaleRect(viewport, 0.25f)); 746 gfx::Rect skewport = tiling->ComputeSkewport(2.0, viewport_in_content_space); 747 748 soon_rect = viewport; 749 soon_rect.Inset(-312.f, -312.f, -312.f, -312.f); 750 soon_rect_in_content_space = 751 gfx::ToEnclosedRect(gfx::ScaleRect(soon_rect, 0.25f)); 752 753 EXPECT_EQ(0, skewport.x()); 754 EXPECT_EQ(10, skewport.y()); 755 EXPECT_EQ(25, skewport.width()); 756 EXPECT_EQ(35, skewport.height()); 757 758 tiling->UpdateTilePriorities(ACTIVE_TREE, viewport, 1.f, 2.0, Occlusion()); 759 760 have_now = false; 761 have_eventually = false; 762 have_soon = false; 763 764 // Viewport moved, so we expect to find some NOW tiles, some SOON tiles and 765 // some EVENTUALLY tiles. 766 for (int i = 0; i < 47; ++i) { 767 for (int j = 0; j < 47; ++j) { 768 Tile* tile = tiling->TileAt(i, j); 769 TilePriority priority = tile->priority(ACTIVE_TREE); 770 771 gfx::Rect tile_rect = tiling->TilingDataForTesting().TileBounds(i, j); 772 if (viewport_in_content_space.Intersects(tile_rect)) { 773 EXPECT_EQ(TilePriority::NOW, priority.priority_bin) << "i: " << i 774 << " j: " << j; 775 EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible) << "i: " << i 776 << " j: " << j; 777 have_now = true; 778 } else if (skewport.Intersects(tile_rect) || 779 soon_rect_in_content_space.Intersects(tile_rect)) { 780 EXPECT_EQ(TilePriority::SOON, priority.priority_bin) << "i: " << i 781 << " j: " << j; 782 EXPECT_GT(priority.distance_to_visible, 0.f) << "i: " << i 783 << " j: " << j; 784 have_soon = true; 785 } else { 786 EXPECT_EQ(TilePriority::EVENTUALLY, priority.priority_bin) 787 << "i: " << i << " j: " << j; 788 EXPECT_GT(priority.distance_to_visible, 0.f) << "i: " << i 789 << " j: " << j; 790 have_eventually = true; 791 } 792 } 793 } 794 795 EXPECT_TRUE(have_now); 796 EXPECT_TRUE(have_soon); 797 EXPECT_TRUE(have_eventually); 798 799 priority = tiling->TileAt(5, 1)->priority(ACTIVE_TREE); 800 EXPECT_FLOAT_EQ(68.f, priority.distance_to_visible); 801 802 priority = tiling->TileAt(2, 5)->priority(ACTIVE_TREE); 803 EXPECT_FLOAT_EQ(28.f, priority.distance_to_visible); 804 805 priority = tiling->TileAt(3, 4)->priority(ACTIVE_TREE); 806 EXPECT_FLOAT_EQ(4.f, priority.distance_to_visible); 807 808 // Change the underlying layer scale. 809 tiling->UpdateTilePriorities(ACTIVE_TREE, viewport, 2.0f, 3.0, Occlusion()); 810 811 priority = tiling->TileAt(5, 1)->priority(ACTIVE_TREE); 812 EXPECT_FLOAT_EQ(136.f, priority.distance_to_visible); 813 814 priority = tiling->TileAt(2, 5)->priority(ACTIVE_TREE); 815 EXPECT_FLOAT_EQ(56.f, priority.distance_to_visible); 816 817 priority = tiling->TileAt(3, 4)->priority(ACTIVE_TREE); 818 EXPECT_FLOAT_EQ(8.f, priority.distance_to_visible); 819 820 // Test additional scales. 821 tiling = TestablePictureLayerTiling::Create(0.2f, layer_bounds, &client); 822 tiling->UpdateTilePriorities(ACTIVE_TREE, viewport, 1.0f, 4.0, Occlusion()); 823 824 priority = tiling->TileAt(5, 1)->priority(ACTIVE_TREE); 825 EXPECT_FLOAT_EQ(110.f, priority.distance_to_visible); 826 827 priority = tiling->TileAt(2, 5)->priority(ACTIVE_TREE); 828 EXPECT_FLOAT_EQ(70.f, priority.distance_to_visible); 829 830 priority = tiling->TileAt(3, 4)->priority(ACTIVE_TREE); 831 EXPECT_FLOAT_EQ(60.f, priority.distance_to_visible); 832 833 tiling->UpdateTilePriorities(ACTIVE_TREE, viewport, 0.5f, 5.0, Occlusion()); 834 835 priority = tiling->TileAt(5, 1)->priority(ACTIVE_TREE); 836 EXPECT_FLOAT_EQ(55.f, priority.distance_to_visible); 837 838 priority = tiling->TileAt(2, 5)->priority(ACTIVE_TREE); 839 EXPECT_FLOAT_EQ(35.f, priority.distance_to_visible); 840 841 priority = tiling->TileAt(3, 4)->priority(ACTIVE_TREE); 842 EXPECT_FLOAT_EQ(30.f, priority.distance_to_visible); 843 } 844 845 TEST(PictureLayerTilingTest, ExpandRectEqual) { 846 gfx::Rect in(40, 50, 100, 200); 847 gfx::Rect bounds(-1000, -1000, 10000, 10000); 848 int64 target_area = 100 * 200; 849 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 850 in, target_area, bounds, NULL); 851 EXPECT_EQ(in.ToString(), out.ToString()); 852 } 853 854 TEST(PictureLayerTilingTest, ExpandRectSmaller) { 855 gfx::Rect in(40, 50, 100, 200); 856 gfx::Rect bounds(-1000, -1000, 10000, 10000); 857 int64 target_area = 100 * 100; 858 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 859 in, target_area, bounds, NULL); 860 EXPECT_EQ(out.bottom() - in.bottom(), in.y() - out.y()); 861 EXPECT_EQ(out.right() - in.right(), in.x() - out.x()); 862 EXPECT_EQ(out.width() - in.width(), out.height() - in.height()); 863 864 // |in| represents the visible rect, and |out| represents the eventually rect. 865 // If the eventually rect doesn't contain the visible rect, we will start 866 // losing tiles. 867 EXPECT_TRUE(out.Contains(in)); 868 EXPECT_TRUE(bounds.Contains(out)); 869 } 870 871 TEST(PictureLayerTilingTest, ExpandRectUnbounded) { 872 gfx::Rect in(40, 50, 100, 200); 873 gfx::Rect bounds(-1000, -1000, 10000, 10000); 874 int64 target_area = 200 * 200; 875 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 876 in, target_area, bounds, NULL); 877 EXPECT_EQ(out.bottom() - in.bottom(), in.y() - out.y()); 878 EXPECT_EQ(out.right() - in.right(), in.x() - out.x()); 879 EXPECT_EQ(out.width() - in.width(), out.height() - in.height()); 880 EXPECT_NEAR(200 * 200, out.width() * out.height(), 100); 881 EXPECT_TRUE(bounds.Contains(out)); 882 } 883 884 TEST(PictureLayerTilingTest, ExpandRectBoundedSmaller) { 885 gfx::Rect in(40, 50, 100, 200); 886 gfx::Rect bounds(50, 60, 40, 30); 887 int64 target_area = 200 * 200; 888 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 889 in, target_area, bounds, NULL); 890 EXPECT_EQ(bounds.ToString(), out.ToString()); 891 } 892 893 TEST(PictureLayerTilingTest, ExpandRectBoundedEqual) { 894 gfx::Rect in(40, 50, 100, 200); 895 gfx::Rect bounds = in; 896 int64 target_area = 200 * 200; 897 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 898 in, target_area, bounds, NULL); 899 EXPECT_EQ(bounds.ToString(), out.ToString()); 900 } 901 902 TEST(PictureLayerTilingTest, ExpandRectBoundedSmallerStretchVertical) { 903 gfx::Rect in(40, 50, 100, 200); 904 gfx::Rect bounds(45, 0, 90, 300); 905 int64 target_area = 200 * 200; 906 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 907 in, target_area, bounds, NULL); 908 EXPECT_EQ(bounds.ToString(), out.ToString()); 909 } 910 911 TEST(PictureLayerTilingTest, ExpandRectBoundedEqualStretchVertical) { 912 gfx::Rect in(40, 50, 100, 200); 913 gfx::Rect bounds(40, 0, 100, 300); 914 int64 target_area = 200 * 200; 915 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 916 in, target_area, bounds, NULL); 917 EXPECT_EQ(bounds.ToString(), out.ToString()); 918 } 919 920 TEST(PictureLayerTilingTest, ExpandRectBoundedSmallerStretchHorizontal) { 921 gfx::Rect in(40, 50, 100, 200); 922 gfx::Rect bounds(0, 55, 180, 190); 923 int64 target_area = 200 * 200; 924 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 925 in, target_area, bounds, NULL); 926 EXPECT_EQ(bounds.ToString(), out.ToString()); 927 } 928 929 TEST(PictureLayerTilingTest, ExpandRectBoundedEqualStretchHorizontal) { 930 gfx::Rect in(40, 50, 100, 200); 931 gfx::Rect bounds(0, 50, 180, 200); 932 int64 target_area = 200 * 200; 933 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 934 in, target_area, bounds, NULL); 935 EXPECT_EQ(bounds.ToString(), out.ToString()); 936 } 937 938 TEST(PictureLayerTilingTest, ExpandRectBoundedLeft) { 939 gfx::Rect in(40, 50, 100, 200); 940 gfx::Rect bounds(20, -1000, 10000, 10000); 941 int64 target_area = 200 * 200; 942 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 943 in, target_area, bounds, NULL); 944 EXPECT_EQ(out.bottom() - in.bottom(), in.y() - out.y()); 945 EXPECT_EQ(out.bottom() - in.bottom(), out.right() - in.right()); 946 EXPECT_LE(out.width() * out.height(), target_area); 947 EXPECT_GT(out.width() * out.height(), 948 target_area - out.width() - out.height() * 2); 949 EXPECT_TRUE(bounds.Contains(out)); 950 } 951 952 TEST(PictureLayerTilingTest, ExpandRectBoundedRight) { 953 gfx::Rect in(40, 50, 100, 200); 954 gfx::Rect bounds(-1000, -1000, 1000+120, 10000); 955 int64 target_area = 200 * 200; 956 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 957 in, target_area, bounds, NULL); 958 EXPECT_EQ(out.bottom() - in.bottom(), in.y() - out.y()); 959 EXPECT_EQ(out.bottom() - in.bottom(), in.x() - out.x()); 960 EXPECT_LE(out.width() * out.height(), target_area); 961 EXPECT_GT(out.width() * out.height(), 962 target_area - out.width() - out.height() * 2); 963 EXPECT_TRUE(bounds.Contains(out)); 964 } 965 966 TEST(PictureLayerTilingTest, ExpandRectBoundedTop) { 967 gfx::Rect in(40, 50, 100, 200); 968 gfx::Rect bounds(-1000, 30, 10000, 10000); 969 int64 target_area = 200 * 200; 970 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 971 in, target_area, bounds, NULL); 972 EXPECT_EQ(out.right() - in.right(), in.x() - out.x()); 973 EXPECT_EQ(out.right() - in.right(), out.bottom() - in.bottom()); 974 EXPECT_LE(out.width() * out.height(), target_area); 975 EXPECT_GT(out.width() * out.height(), 976 target_area - out.width() * 2 - out.height()); 977 EXPECT_TRUE(bounds.Contains(out)); 978 } 979 980 TEST(PictureLayerTilingTest, ExpandRectBoundedBottom) { 981 gfx::Rect in(40, 50, 100, 200); 982 gfx::Rect bounds(-1000, -1000, 10000, 1000 + 220); 983 int64 target_area = 200 * 200; 984 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 985 in, target_area, bounds, NULL); 986 EXPECT_EQ(out.right() - in.right(), in.x() - out.x()); 987 EXPECT_EQ(out.right() - in.right(), in.y() - out.y()); 988 EXPECT_LE(out.width() * out.height(), target_area); 989 EXPECT_GT(out.width() * out.height(), 990 target_area - out.width() * 2 - out.height()); 991 EXPECT_TRUE(bounds.Contains(out)); 992 } 993 994 TEST(PictureLayerTilingTest, ExpandRectSquishedHorizontally) { 995 gfx::Rect in(40, 50, 100, 200); 996 gfx::Rect bounds(0, -4000, 100+40+20, 100000); 997 int64 target_area = 400 * 400; 998 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 999 in, target_area, bounds, NULL); 1000 EXPECT_EQ(20, out.right() - in.right()); 1001 EXPECT_EQ(40, in.x() - out.x()); 1002 EXPECT_EQ(out.bottom() - in.bottom(), in.y() - out.y()); 1003 EXPECT_LE(out.width() * out.height(), target_area); 1004 EXPECT_GT(out.width() * out.height(), 1005 target_area - out.width() * 2); 1006 EXPECT_TRUE(bounds.Contains(out)); 1007 } 1008 1009 TEST(PictureLayerTilingTest, ExpandRectSquishedVertically) { 1010 gfx::Rect in(40, 50, 100, 200); 1011 gfx::Rect bounds(-4000, 0, 100000, 200+50+30); 1012 int64 target_area = 400 * 400; 1013 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 1014 in, target_area, bounds, NULL); 1015 EXPECT_EQ(30, out.bottom() - in.bottom()); 1016 EXPECT_EQ(50, in.y() - out.y()); 1017 EXPECT_EQ(out.right() - in.right(), in.x() - out.x()); 1018 EXPECT_LE(out.width() * out.height(), target_area); 1019 EXPECT_GT(out.width() * out.height(), 1020 target_area - out.height() * 2); 1021 EXPECT_TRUE(bounds.Contains(out)); 1022 } 1023 1024 TEST(PictureLayerTilingTest, ExpandRectOutOfBoundsFarAway) { 1025 gfx::Rect in(400, 500, 100, 200); 1026 gfx::Rect bounds(0, 0, 10, 10); 1027 int64 target_area = 400 * 400; 1028 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 1029 in, target_area, bounds, NULL); 1030 EXPECT_TRUE(out.IsEmpty()); 1031 } 1032 1033 TEST(PictureLayerTilingTest, ExpandRectOutOfBoundsExpandedFullyCover) { 1034 gfx::Rect in(40, 50, 100, 100); 1035 gfx::Rect bounds(0, 0, 10, 10); 1036 int64 target_area = 400 * 400; 1037 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 1038 in, target_area, bounds, NULL); 1039 EXPECT_EQ(bounds.ToString(), out.ToString()); 1040 } 1041 1042 TEST(PictureLayerTilingTest, ExpandRectOutOfBoundsExpandedPartlyCover) { 1043 gfx::Rect in(600, 600, 100, 100); 1044 gfx::Rect bounds(0, 0, 500, 500); 1045 int64 target_area = 400 * 400; 1046 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 1047 in, target_area, bounds, NULL); 1048 EXPECT_EQ(bounds.right(), out.right()); 1049 EXPECT_EQ(bounds.bottom(), out.bottom()); 1050 EXPECT_LE(out.width() * out.height(), target_area); 1051 EXPECT_GT(out.width() * out.height(), 1052 target_area - out.width() - out.height()); 1053 EXPECT_TRUE(bounds.Contains(out)); 1054 } 1055 1056 TEST(PictureLayerTilingTest, EmptyStartingRect) { 1057 // If a layer has a non-invertible transform, then the starting rect 1058 // for the layer would be empty. 1059 gfx::Rect in(40, 40, 0, 0); 1060 gfx::Rect bounds(0, 0, 10, 10); 1061 int64 target_area = 400 * 400; 1062 gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy( 1063 in, target_area, bounds, NULL); 1064 EXPECT_TRUE(out.IsEmpty()); 1065 } 1066 1067 TEST(PictureLayerTilingTest, TilingRasterTileIteratorStaticViewport) { 1068 FakePictureLayerTilingClient client; 1069 scoped_ptr<TestablePictureLayerTiling> tiling; 1070 1071 gfx::Rect viewport(50, 50, 100, 100); 1072 gfx::Size layer_bounds(800, 800); 1073 1074 gfx::Rect soon_rect = viewport; 1075 soon_rect.Inset(-312.f, -312.f, -312.f, -312.f); 1076 1077 client.SetTileSize(gfx::Size(30, 30)); 1078 client.set_tree(ACTIVE_TREE); 1079 1080 tiling = TestablePictureLayerTiling::Create(1.0f, layer_bounds, &client); 1081 tiling->UpdateTilePriorities(ACTIVE_TREE, viewport, 1.0f, 1.0, Occlusion()); 1082 1083 PictureLayerTiling::TilingRasterTileIterator empty_iterator; 1084 EXPECT_FALSE(empty_iterator); 1085 1086 std::vector<Tile*> all_tiles = tiling->AllTilesForTesting(); 1087 1088 // Sanity check. 1089 EXPECT_EQ(841u, all_tiles.size()); 1090 1091 // The explanation of each iteration is as follows: 1092 // 1. First iteration tests that we can get all of the tiles correctly. 1093 // 2. Second iteration ensures that we can get all of the tiles again (first 1094 // iteration didn't change any tiles), as well set all tiles to be ready to 1095 // draw. 1096 // 3. Third iteration ensures that no tiles are returned, since they were all 1097 // marked as ready to draw. 1098 for (int i = 0; i < 3; ++i) { 1099 PictureLayerTiling::TilingRasterTileIterator it(tiling.get(), ACTIVE_TREE); 1100 1101 // There are 3 bins in TilePriority. 1102 bool have_tiles[3] = {}; 1103 1104 // On the third iteration, we should get no tiles since everything was 1105 // marked as ready to draw. 1106 if (i == 2) { 1107 EXPECT_FALSE(it); 1108 continue; 1109 } 1110 1111 EXPECT_TRUE(it); 1112 std::set<Tile*> unique_tiles; 1113 unique_tiles.insert(*it); 1114 Tile* last_tile = *it; 1115 have_tiles[last_tile->priority(ACTIVE_TREE).priority_bin] = true; 1116 1117 // On the second iteration, mark everything as ready to draw (solid color). 1118 if (i == 1) { 1119 ManagedTileState::TileVersion& tile_version = 1120 last_tile->GetTileVersionForTesting( 1121 last_tile->DetermineRasterModeForTree(ACTIVE_TREE)); 1122 tile_version.SetSolidColorForTesting(SK_ColorRED); 1123 } 1124 ++it; 1125 int eventually_bin_order_correct_count = 0; 1126 int eventually_bin_order_incorrect_count = 0; 1127 while (it) { 1128 Tile* new_tile = *it; 1129 ++it; 1130 unique_tiles.insert(new_tile); 1131 1132 TilePriority last_priority = last_tile->priority(ACTIVE_TREE); 1133 TilePriority new_priority = new_tile->priority(ACTIVE_TREE); 1134 EXPECT_LE(last_priority.priority_bin, new_priority.priority_bin); 1135 if (last_priority.priority_bin == new_priority.priority_bin) { 1136 if (last_priority.priority_bin == TilePriority::EVENTUALLY) { 1137 bool order_correct = last_priority.distance_to_visible <= 1138 new_priority.distance_to_visible; 1139 eventually_bin_order_correct_count += order_correct; 1140 eventually_bin_order_incorrect_count += !order_correct; 1141 } else if (!soon_rect.Intersects(new_tile->content_rect()) && 1142 !soon_rect.Intersects(last_tile->content_rect())) { 1143 EXPECT_LE(last_priority.distance_to_visible, 1144 new_priority.distance_to_visible); 1145 EXPECT_EQ(TilePriority::NOW, new_priority.priority_bin); 1146 } else if (new_priority.distance_to_visible > 0.f) { 1147 EXPECT_EQ(TilePriority::SOON, new_priority.priority_bin); 1148 } 1149 } 1150 have_tiles[new_priority.priority_bin] = true; 1151 1152 last_tile = new_tile; 1153 1154 // On the second iteration, mark everything as ready to draw (solid 1155 // color). 1156 if (i == 1) { 1157 ManagedTileState::TileVersion& tile_version = 1158 last_tile->GetTileVersionForTesting( 1159 last_tile->DetermineRasterModeForTree(ACTIVE_TREE)); 1160 tile_version.SetSolidColorForTesting(SK_ColorRED); 1161 } 1162 } 1163 1164 EXPECT_GT(eventually_bin_order_correct_count, 1165 eventually_bin_order_incorrect_count); 1166 1167 // We should have now and eventually tiles, as well as soon tiles from 1168 // the border region. 1169 EXPECT_TRUE(have_tiles[TilePriority::NOW]); 1170 EXPECT_TRUE(have_tiles[TilePriority::SOON]); 1171 EXPECT_TRUE(have_tiles[TilePriority::EVENTUALLY]); 1172 1173 EXPECT_EQ(unique_tiles.size(), all_tiles.size()); 1174 } 1175 } 1176 1177 TEST(PictureLayerTilingTest, TilingRasterTileIteratorMovingViewport) { 1178 FakePictureLayerTilingClient client; 1179 scoped_ptr<TestablePictureLayerTiling> tiling; 1180 1181 gfx::Rect viewport(50, 0, 100, 100); 1182 gfx::Rect moved_viewport(50, 0, 100, 500); 1183 gfx::Size layer_bounds(1000, 1000); 1184 1185 client.SetTileSize(gfx::Size(30, 30)); 1186 client.set_tree(ACTIVE_TREE); 1187 1188 tiling = TestablePictureLayerTiling::Create(1.f, layer_bounds, &client); 1189 tiling->UpdateTilePriorities(ACTIVE_TREE, viewport, 1.0f, 1.0, Occlusion()); 1190 tiling->UpdateTilePriorities( 1191 ACTIVE_TREE, moved_viewport, 1.0f, 2.0, Occlusion()); 1192 1193 gfx::Rect soon_rect = moved_viewport; 1194 soon_rect.Inset(-312.f, -312.f, -312.f, -312.f); 1195 1196 // There are 3 bins in TilePriority. 1197 bool have_tiles[3] = {}; 1198 Tile* last_tile = NULL; 1199 int eventually_bin_order_correct_count = 0; 1200 int eventually_bin_order_incorrect_count = 0; 1201 for (PictureLayerTiling::TilingRasterTileIterator it(tiling.get(), 1202 ACTIVE_TREE); 1203 it; 1204 ++it) { 1205 if (!last_tile) 1206 last_tile = *it; 1207 1208 Tile* new_tile = *it; 1209 1210 TilePriority last_priority = last_tile->priority(ACTIVE_TREE); 1211 TilePriority new_priority = new_tile->priority(ACTIVE_TREE); 1212 1213 have_tiles[new_priority.priority_bin] = true; 1214 1215 EXPECT_LE(last_priority.priority_bin, new_priority.priority_bin); 1216 if (last_priority.priority_bin == new_priority.priority_bin) { 1217 if (last_priority.priority_bin == TilePriority::EVENTUALLY) { 1218 bool order_correct = last_priority.distance_to_visible <= 1219 new_priority.distance_to_visible; 1220 eventually_bin_order_correct_count += order_correct; 1221 eventually_bin_order_incorrect_count += !order_correct; 1222 } else if (!soon_rect.Intersects(new_tile->content_rect()) && 1223 !soon_rect.Intersects(last_tile->content_rect())) { 1224 EXPECT_LE(last_priority.distance_to_visible, 1225 new_priority.distance_to_visible); 1226 } else if (new_priority.distance_to_visible > 0.f) { 1227 EXPECT_EQ(TilePriority::SOON, new_priority.priority_bin); 1228 } 1229 } 1230 last_tile = new_tile; 1231 } 1232 1233 EXPECT_GT(eventually_bin_order_correct_count, 1234 eventually_bin_order_incorrect_count); 1235 1236 EXPECT_TRUE(have_tiles[TilePriority::NOW]); 1237 EXPECT_TRUE(have_tiles[TilePriority::SOON]); 1238 EXPECT_TRUE(have_tiles[TilePriority::EVENTUALLY]); 1239 } 1240 1241 static void TileExists(bool exists, Tile* tile, 1242 const gfx::Rect& geometry_rect) { 1243 EXPECT_EQ(exists, tile != NULL) << geometry_rect.ToString(); 1244 } 1245 1246 TEST(PictureLayerTilingTest, TilingEvictionTileIteratorStaticViewport) { 1247 FakeOutputSurfaceClient output_surface_client; 1248 scoped_ptr<FakeOutputSurface> output_surface = FakeOutputSurface::Create3d(); 1249 CHECK(output_surface->BindToClient(&output_surface_client)); 1250 TestSharedBitmapManager shared_bitmap_manager; 1251 scoped_ptr<ResourceProvider> resource_provider = ResourceProvider::Create( 1252 output_surface.get(), &shared_bitmap_manager, NULL, 0, false, 1, false); 1253 1254 FakePictureLayerTilingClient client(resource_provider.get()); 1255 scoped_ptr<TestablePictureLayerTiling> tiling; 1256 1257 gfx::Rect viewport(50, 50, 100, 100); 1258 gfx::Size layer_bounds(2000, 2000); 1259 1260 client.SetTileSize(gfx::Size(30, 30)); 1261 client.set_tree(ACTIVE_TREE); 1262 1263 tiling = TestablePictureLayerTiling::Create(1.0f, layer_bounds, &client); 1264 tiling->UpdateTilePriorities(ACTIVE_TREE, viewport, 1.0f, 1.0, Occlusion()); 1265 1266 PictureLayerTiling::TilingRasterTileIterator empty_iterator; 1267 EXPECT_FALSE(empty_iterator); 1268 1269 std::vector<Tile*> all_tiles = tiling->AllTilesForTesting(); 1270 1271 PictureLayerTiling::TilingEvictionTileIterator it( 1272 tiling.get(), SMOOTHNESS_TAKES_PRIORITY, PictureLayerTiling::NOW); 1273 1274 // Tiles don't have resources to evict. 1275 EXPECT_FALSE(it); 1276 1277 // Sanity check. 1278 EXPECT_EQ(5184u, all_tiles.size()); 1279 1280 client.tile_manager()->InitializeTilesWithResourcesForTesting(all_tiles); 1281 1282 std::set<Tile*> all_tiles_set(all_tiles.begin(), all_tiles.end()); 1283 1284 std::set<Tile*> eviction_tiles; 1285 1286 it = PictureLayerTiling::TilingEvictionTileIterator( 1287 tiling.get(), SMOOTHNESS_TAKES_PRIORITY, PictureLayerTiling::EVENTUALLY); 1288 EXPECT_TRUE(it); 1289 for (; it; ++it) { 1290 Tile* tile = *it; 1291 EXPECT_TRUE(tile); 1292 EXPECT_EQ(TilePriority::EVENTUALLY, 1293 tile->priority(ACTIVE_TREE).priority_bin); 1294 EXPECT_FALSE(tile->required_for_activation()); 1295 eviction_tiles.insert(tile); 1296 } 1297 1298 it = PictureLayerTiling::TilingEvictionTileIterator( 1299 tiling.get(), SMOOTHNESS_TAKES_PRIORITY, PictureLayerTiling::SOON); 1300 EXPECT_TRUE(it); 1301 for (; it; ++it) { 1302 Tile* tile = *it; 1303 EXPECT_TRUE(tile); 1304 EXPECT_EQ(TilePriority::SOON, tile->priority(ACTIVE_TREE).priority_bin); 1305 EXPECT_FALSE(tile->required_for_activation()); 1306 eviction_tiles.insert(tile); 1307 } 1308 1309 it = PictureLayerTiling::TilingEvictionTileIterator( 1310 tiling.get(), SMOOTHNESS_TAKES_PRIORITY, PictureLayerTiling::NOW); 1311 EXPECT_TRUE(it); 1312 for (; it; ++it) { 1313 Tile* tile = *it; 1314 EXPECT_TRUE(tile); 1315 EXPECT_EQ(TilePriority::NOW, tile->priority(ACTIVE_TREE).priority_bin); 1316 EXPECT_FALSE(tile->required_for_activation()); 1317 eviction_tiles.insert(tile); 1318 } 1319 1320 it = PictureLayerTiling::TilingEvictionTileIterator( 1321 tiling.get(), 1322 SMOOTHNESS_TAKES_PRIORITY, 1323 PictureLayerTiling::NOW_AND_REQUIRED_FOR_ACTIVATION); 1324 EXPECT_FALSE(it); 1325 1326 EXPECT_GT(all_tiles_set.size(), 0u); 1327 EXPECT_EQ(all_tiles_set, eviction_tiles); 1328 } 1329 1330 TEST_F(PictureLayerTilingIteratorTest, TilesExist) { 1331 gfx::Size layer_bounds(1099, 801); 1332 Initialize(gfx::Size(100, 100), 1.f, layer_bounds); 1333 VerifyTilesExactlyCoverRect(1.f, gfx::Rect(layer_bounds)); 1334 VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, false)); 1335 1336 client_.set_tree(ACTIVE_TREE); 1337 tiling_->UpdateTilePriorities( 1338 ACTIVE_TREE, 1339 gfx::Rect(layer_bounds), // visible content rect 1340 1.f, // current contents scale 1341 1.0, // current frame time 1342 Occlusion()); 1343 VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, true)); 1344 1345 // Make the viewport rect empty. All tiles are killed and become zombies. 1346 tiling_->UpdateTilePriorities(ACTIVE_TREE, 1347 gfx::Rect(), // visible content rect 1348 1.f, // current contents scale 1349 2.0, // current frame time 1350 Occlusion()); 1351 VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, false)); 1352 } 1353 1354 TEST_F(PictureLayerTilingIteratorTest, TilesExistGiantViewport) { 1355 gfx::Size layer_bounds(1099, 801); 1356 Initialize(gfx::Size(100, 100), 1.f, layer_bounds); 1357 VerifyTilesExactlyCoverRect(1.f, gfx::Rect(layer_bounds)); 1358 VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, false)); 1359 1360 gfx::Rect giant_rect(-10000000, -10000000, 1000000000, 1000000000); 1361 1362 client_.set_tree(ACTIVE_TREE); 1363 tiling_->UpdateTilePriorities( 1364 ACTIVE_TREE, 1365 gfx::Rect(layer_bounds), // visible content rect 1366 1.f, // current contents scale 1367 1.0, // current frame time 1368 Occlusion()); 1369 VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, true)); 1370 1371 // If the visible content rect is empty, it should still have live tiles. 1372 tiling_->UpdateTilePriorities(ACTIVE_TREE, 1373 giant_rect, // visible content rect 1374 1.f, // current contents scale 1375 2.0, // current frame time 1376 Occlusion()); 1377 VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, true)); 1378 } 1379 1380 TEST_F(PictureLayerTilingIteratorTest, TilesExistOutsideViewport) { 1381 gfx::Size layer_bounds(1099, 801); 1382 Initialize(gfx::Size(100, 100), 1.f, layer_bounds); 1383 VerifyTilesExactlyCoverRect(1.f, gfx::Rect(layer_bounds)); 1384 VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, false)); 1385 1386 // This rect does not intersect with the layer, as the layer is outside the 1387 // viewport. 1388 gfx::Rect viewport_rect(1100, 0, 1000, 1000); 1389 EXPECT_FALSE(viewport_rect.Intersects(gfx::Rect(layer_bounds))); 1390 1391 client_.set_tree(ACTIVE_TREE); 1392 tiling_->UpdateTilePriorities(ACTIVE_TREE, 1393 viewport_rect, // visible content rect 1394 1.f, // current contents scale 1395 1.0, // current frame time 1396 Occlusion()); 1397 VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, true)); 1398 } 1399 1400 static void TilesIntersectingRectExist(const gfx::Rect& rect, 1401 bool intersect_exists, 1402 Tile* tile, 1403 const gfx::Rect& geometry_rect) { 1404 bool intersects = rect.Intersects(geometry_rect); 1405 bool expected_exists = intersect_exists ? intersects : !intersects; 1406 EXPECT_EQ(expected_exists, tile != NULL) 1407 << "Rects intersecting " << rect.ToString() << " should exist. " 1408 << "Current tile rect is " << geometry_rect.ToString(); 1409 } 1410 1411 TEST_F(PictureLayerTilingIteratorTest, 1412 TilesExistLargeViewportAndLayerWithSmallVisibleArea) { 1413 gfx::Size layer_bounds(10000, 10000); 1414 Initialize(gfx::Size(100, 100), 1.f, layer_bounds); 1415 VerifyTilesExactlyCoverRect(1.f, gfx::Rect(layer_bounds)); 1416 VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, false)); 1417 1418 gfx::Rect visible_rect(8000, 8000, 50, 50); 1419 1420 client_.set_tree(ACTIVE_TREE); 1421 set_max_tiles_for_interest_area(1); 1422 tiling_->UpdateTilePriorities(ACTIVE_TREE, 1423 visible_rect, // visible content rect 1424 1.f, // current contents scale 1425 1.0, // current frame time 1426 Occlusion()); 1427 VerifyTiles(1.f, 1428 gfx::Rect(layer_bounds), 1429 base::Bind(&TilesIntersectingRectExist, visible_rect, true)); 1430 } 1431 1432 TEST_F(PictureLayerTilingIteratorTest, AddTilingsToMatchScale) { 1433 gfx::Size layer_bounds(1099, 801); 1434 gfx::Size tile_size(100, 100); 1435 1436 client_.SetTileSize(tile_size); 1437 client_.set_tree(PENDING_TREE); 1438 1439 PictureLayerTilingSet active_set(&client_, layer_bounds); 1440 1441 active_set.AddTiling(1.f); 1442 1443 VerifyTiles(active_set.tiling_at(0), 1444 1.f, 1445 gfx::Rect(layer_bounds), 1446 base::Bind(&TileExists, false)); 1447 1448 UpdateAllTilePriorities(&active_set, 1449 PENDING_TREE, 1450 gfx::Rect(layer_bounds), // visible content rect 1451 1.f, // current contents scale 1452 1.0); // current frame time 1453 1454 // The active tiling has tiles now. 1455 VerifyTiles(active_set.tiling_at(0), 1456 1.f, 1457 gfx::Rect(layer_bounds), 1458 base::Bind(&TileExists, true)); 1459 1460 // Add the same tilings to the pending set. 1461 PictureLayerTilingSet pending_set(&client_, layer_bounds); 1462 Region invalidation; 1463 pending_set.SyncTilings(active_set, layer_bounds, invalidation, 0.f); 1464 1465 // The pending tiling starts with no tiles. 1466 VerifyTiles(pending_set.tiling_at(0), 1467 1.f, 1468 gfx::Rect(layer_bounds), 1469 base::Bind(&TileExists, false)); 1470 1471 // UpdateTilePriorities on the pending tiling at the same frame time. The 1472 // pending tiling should get tiles. 1473 UpdateAllTilePriorities(&pending_set, 1474 PENDING_TREE, 1475 gfx::Rect(layer_bounds), // visible content rect 1476 1.f, // current contents scale 1477 1.0); // current frame time 1478 1479 VerifyTiles(pending_set.tiling_at(0), 1480 1.f, 1481 gfx::Rect(layer_bounds), 1482 base::Bind(&TileExists, true)); 1483 } 1484 1485 TEST(UpdateTilePrioritiesTest, VisibleTiles) { 1486 // The TilePriority of visible tiles should have zero distance_to_visible 1487 // and time_to_visible. 1488 1489 FakePictureLayerTilingClient client; 1490 scoped_ptr<TestablePictureLayerTiling> tiling; 1491 1492 gfx::Size device_viewport(800, 600); 1493 gfx::Size last_layer_bounds(200, 200); 1494 gfx::Size current_layer_bounds(200, 200); 1495 float current_layer_contents_scale = 1.f; 1496 gfx::Transform current_screen_transform; 1497 double current_frame_time_in_seconds = 1.0; 1498 1499 gfx::Rect viewport_in_layer_space = ViewportInLayerSpace( 1500 current_screen_transform, device_viewport); 1501 1502 client.SetTileSize(gfx::Size(100, 100)); 1503 client.set_tree(ACTIVE_TREE); 1504 tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale 1505 current_layer_bounds, 1506 &client); 1507 1508 tiling->UpdateTilePriorities(ACTIVE_TREE, 1509 viewport_in_layer_space, 1510 current_layer_contents_scale, 1511 current_frame_time_in_seconds, 1512 Occlusion()); 1513 1514 ASSERT_TRUE(tiling->TileAt(0, 0)); 1515 ASSERT_TRUE(tiling->TileAt(0, 1)); 1516 ASSERT_TRUE(tiling->TileAt(1, 0)); 1517 ASSERT_TRUE(tiling->TileAt(1, 1)); 1518 1519 TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE); 1520 EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible); 1521 EXPECT_FLOAT_EQ(TilePriority::NOW, priority.priority_bin); 1522 1523 priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE); 1524 EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible); 1525 EXPECT_FLOAT_EQ(TilePriority::NOW, priority.priority_bin); 1526 1527 priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE); 1528 EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible); 1529 EXPECT_FLOAT_EQ(TilePriority::NOW, priority.priority_bin); 1530 1531 priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE); 1532 EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible); 1533 EXPECT_FLOAT_EQ(TilePriority::NOW, priority.priority_bin); 1534 } 1535 1536 TEST(UpdateTilePrioritiesTest, OffscreenTiles) { 1537 // The TilePriority of offscreen tiles (without movement) should have nonzero 1538 // distance_to_visible and infinite time_to_visible. 1539 1540 FakePictureLayerTilingClient client; 1541 scoped_ptr<TestablePictureLayerTiling> tiling; 1542 1543 gfx::Size device_viewport(800, 600); 1544 gfx::Size last_layer_bounds(200, 200); 1545 gfx::Size current_layer_bounds(200, 200); 1546 float current_layer_contents_scale = 1.f; 1547 gfx::Transform last_screen_transform; 1548 gfx::Transform current_screen_transform; 1549 double current_frame_time_in_seconds = 1.0; 1550 1551 current_screen_transform.Translate(850, 0); 1552 last_screen_transform = current_screen_transform; 1553 1554 gfx::Rect viewport_in_layer_space = ViewportInLayerSpace( 1555 current_screen_transform, device_viewport); 1556 1557 client.SetTileSize(gfx::Size(100, 100)); 1558 client.set_tree(ACTIVE_TREE); 1559 tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale 1560 current_layer_bounds, 1561 &client); 1562 1563 tiling->UpdateTilePriorities(ACTIVE_TREE, 1564 viewport_in_layer_space, 1565 current_layer_contents_scale, 1566 current_frame_time_in_seconds, 1567 Occlusion()); 1568 1569 ASSERT_TRUE(tiling->TileAt(0, 0)); 1570 ASSERT_TRUE(tiling->TileAt(0, 1)); 1571 ASSERT_TRUE(tiling->TileAt(1, 0)); 1572 ASSERT_TRUE(tiling->TileAt(1, 1)); 1573 1574 TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE); 1575 EXPECT_GT(priority.distance_to_visible, 0.f); 1576 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1577 1578 priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE); 1579 EXPECT_GT(priority.distance_to_visible, 0.f); 1580 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1581 1582 priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE); 1583 EXPECT_GT(priority.distance_to_visible, 0.f); 1584 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1585 1586 priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE); 1587 EXPECT_GT(priority.distance_to_visible, 0.f); 1588 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1589 1590 // Furthermore, in this scenario tiles on the right hand side should have a 1591 // larger distance to visible. 1592 TilePriority left = tiling->TileAt(0, 0)->priority(ACTIVE_TREE); 1593 TilePriority right = tiling->TileAt(1, 0)->priority(ACTIVE_TREE); 1594 EXPECT_GT(right.distance_to_visible, left.distance_to_visible); 1595 1596 left = tiling->TileAt(0, 1)->priority(ACTIVE_TREE); 1597 right = tiling->TileAt(1, 1)->priority(ACTIVE_TREE); 1598 EXPECT_GT(right.distance_to_visible, left.distance_to_visible); 1599 } 1600 1601 TEST(UpdateTilePrioritiesTest, PartiallyOffscreenLayer) { 1602 // Sanity check that a layer with some tiles visible and others offscreen has 1603 // correct TilePriorities for each tile. 1604 1605 FakePictureLayerTilingClient client; 1606 scoped_ptr<TestablePictureLayerTiling> tiling; 1607 1608 gfx::Size device_viewport(800, 600); 1609 gfx::Size last_layer_bounds(200, 200); 1610 gfx::Size current_layer_bounds(200, 200); 1611 float current_layer_contents_scale = 1.f; 1612 gfx::Transform last_screen_transform; 1613 gfx::Transform current_screen_transform; 1614 double current_frame_time_in_seconds = 1.0; 1615 1616 current_screen_transform.Translate(705, 505); 1617 last_screen_transform = current_screen_transform; 1618 1619 gfx::Rect viewport_in_layer_space = ViewportInLayerSpace( 1620 current_screen_transform, device_viewport); 1621 1622 client.SetTileSize(gfx::Size(100, 100)); 1623 client.set_tree(ACTIVE_TREE); 1624 tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale 1625 current_layer_bounds, 1626 &client); 1627 1628 tiling->UpdateTilePriorities(ACTIVE_TREE, 1629 viewport_in_layer_space, 1630 current_layer_contents_scale, 1631 current_frame_time_in_seconds, 1632 Occlusion()); 1633 1634 ASSERT_TRUE(tiling->TileAt(0, 0)); 1635 ASSERT_TRUE(tiling->TileAt(0, 1)); 1636 ASSERT_TRUE(tiling->TileAt(1, 0)); 1637 ASSERT_TRUE(tiling->TileAt(1, 1)); 1638 1639 TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE); 1640 EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible); 1641 EXPECT_FLOAT_EQ(TilePriority::NOW, priority.priority_bin); 1642 1643 priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE); 1644 EXPECT_GT(priority.distance_to_visible, 0.f); 1645 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1646 1647 priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE); 1648 EXPECT_GT(priority.distance_to_visible, 0.f); 1649 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1650 1651 priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE); 1652 EXPECT_GT(priority.distance_to_visible, 0.f); 1653 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1654 } 1655 1656 TEST(UpdateTilePrioritiesTest, PartiallyOffscreenRotatedLayer) { 1657 // Each tile of a layer may be affected differently by a transform; Check 1658 // that UpdateTilePriorities correctly accounts for the transform between 1659 // layer space and screen space. 1660 1661 FakePictureLayerTilingClient client; 1662 scoped_ptr<TestablePictureLayerTiling> tiling; 1663 1664 gfx::Size device_viewport(800, 600); 1665 gfx::Size last_layer_bounds(200, 200); 1666 gfx::Size current_layer_bounds(200, 200); 1667 float current_layer_contents_scale = 1.f; 1668 gfx::Transform last_screen_transform; 1669 gfx::Transform current_screen_transform; 1670 double current_frame_time_in_seconds = 1.0; 1671 1672 // A diagonally rotated layer that is partially off the bottom of the screen. 1673 // In this configuration, only the top-left tile would be visible. 1674 current_screen_transform.Translate(600, 750); 1675 current_screen_transform.RotateAboutZAxis(45); 1676 last_screen_transform = current_screen_transform; 1677 1678 gfx::Rect viewport_in_layer_space = ViewportInLayerSpace( 1679 current_screen_transform, device_viewport); 1680 1681 client.SetTileSize(gfx::Size(100, 100)); 1682 client.set_tree(ACTIVE_TREE); 1683 tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale 1684 current_layer_bounds, 1685 &client); 1686 1687 tiling->UpdateTilePriorities(ACTIVE_TREE, 1688 viewport_in_layer_space, 1689 current_layer_contents_scale, 1690 current_frame_time_in_seconds, 1691 Occlusion()); 1692 1693 ASSERT_TRUE(tiling->TileAt(0, 0)); 1694 ASSERT_TRUE(tiling->TileAt(0, 1)); 1695 ASSERT_TRUE(tiling->TileAt(1, 0)); 1696 ASSERT_TRUE(tiling->TileAt(1, 1)); 1697 1698 TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE); 1699 EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible); 1700 EXPECT_EQ(TilePriority::NOW, priority.priority_bin); 1701 1702 priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE); 1703 EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible); 1704 EXPECT_EQ(TilePriority::NOW, priority.priority_bin); 1705 1706 priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE); 1707 EXPECT_GT(priority.distance_to_visible, 0.f); 1708 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1709 1710 priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE); 1711 EXPECT_GT(priority.distance_to_visible, 0.f); 1712 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1713 1714 // Furthermore, in this scenario the bottom-right tile should have the larger 1715 // distance to visible. 1716 TilePriority top_left = tiling->TileAt(0, 0)->priority(ACTIVE_TREE); 1717 TilePriority top_right = tiling->TileAt(1, 0)->priority(ACTIVE_TREE); 1718 TilePriority bottom_right = tiling->TileAt(1, 1)->priority(ACTIVE_TREE); 1719 EXPECT_GT(top_right.distance_to_visible, top_left.distance_to_visible); 1720 1721 EXPECT_EQ(bottom_right.distance_to_visible, top_right.distance_to_visible); 1722 } 1723 1724 TEST(UpdateTilePrioritiesTest, PerspectiveLayer) { 1725 // Perspective transforms need to take a different code path. 1726 // This test checks tile priorities of a perspective layer. 1727 1728 FakePictureLayerTilingClient client; 1729 scoped_ptr<TestablePictureLayerTiling> tiling; 1730 1731 gfx::Size device_viewport(800, 600); 1732 gfx::Rect visible_layer_rect(0, 0, 0, 0); // offscreen. 1733 gfx::Size last_layer_bounds(200, 200); 1734 gfx::Size current_layer_bounds(200, 200); 1735 float current_layer_contents_scale = 1.f; 1736 gfx::Transform last_screen_transform; 1737 gfx::Transform current_screen_transform; 1738 double current_frame_time_in_seconds = 1.0; 1739 1740 // A 3d perspective layer rotated about its Y axis, translated to almost 1741 // fully offscreen. The left side will appear closer (i.e. larger in 2d) than 1742 // the right side, so the top-left tile will technically be closer than the 1743 // top-right. 1744 1745 // Translate layer to offscreen 1746 current_screen_transform.Translate(400.0, 630.0); 1747 // Apply perspective about the center of the layer 1748 current_screen_transform.Translate(100.0, 100.0); 1749 current_screen_transform.ApplyPerspectiveDepth(100.0); 1750 current_screen_transform.RotateAboutYAxis(10.0); 1751 current_screen_transform.Translate(-100.0, -100.0); 1752 last_screen_transform = current_screen_transform; 1753 1754 // Sanity check that this transform wouldn't cause w<0 clipping. 1755 bool clipped; 1756 MathUtil::MapQuad(current_screen_transform, 1757 gfx::QuadF(gfx::RectF(0, 0, 200, 200)), 1758 &clipped); 1759 ASSERT_FALSE(clipped); 1760 1761 gfx::Rect viewport_in_layer_space = ViewportInLayerSpace( 1762 current_screen_transform, device_viewport); 1763 1764 client.SetTileSize(gfx::Size(100, 100)); 1765 client.set_tree(ACTIVE_TREE); 1766 tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale 1767 current_layer_bounds, 1768 &client); 1769 1770 tiling->UpdateTilePriorities(ACTIVE_TREE, 1771 viewport_in_layer_space, 1772 current_layer_contents_scale, 1773 current_frame_time_in_seconds, 1774 Occlusion()); 1775 1776 ASSERT_TRUE(tiling->TileAt(0, 0)); 1777 ASSERT_TRUE(tiling->TileAt(0, 1)); 1778 ASSERT_TRUE(tiling->TileAt(1, 0)); 1779 ASSERT_TRUE(tiling->TileAt(1, 1)); 1780 1781 // All tiles will have a positive distance_to_visible 1782 // and an infinite time_to_visible. 1783 TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE); 1784 EXPECT_FLOAT_EQ(priority.distance_to_visible, 0.f); 1785 EXPECT_EQ(TilePriority::NOW, priority.priority_bin); 1786 1787 priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE); 1788 EXPECT_GT(priority.distance_to_visible, 0.f); 1789 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1790 1791 priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE); 1792 EXPECT_FLOAT_EQ(priority.distance_to_visible, 0.f); 1793 EXPECT_EQ(TilePriority::NOW, priority.priority_bin); 1794 1795 priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE); 1796 EXPECT_GT(priority.distance_to_visible, 0.f); 1797 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1798 1799 // Furthermore, in this scenario the top-left distance_to_visible 1800 // will be smallest, followed by top-right. The bottom layers 1801 // will of course be further than the top layers. 1802 TilePriority top_left = tiling->TileAt(0, 0)->priority(ACTIVE_TREE); 1803 TilePriority top_right = tiling->TileAt(1, 0)->priority(ACTIVE_TREE); 1804 TilePriority bottom_left = tiling->TileAt(0, 1)->priority(ACTIVE_TREE); 1805 TilePriority bottom_right = tiling->TileAt(1, 1)->priority(ACTIVE_TREE); 1806 1807 EXPECT_GT(bottom_right.distance_to_visible, top_right.distance_to_visible); 1808 1809 EXPECT_GT(bottom_left.distance_to_visible, top_left.distance_to_visible); 1810 } 1811 1812 TEST(UpdateTilePrioritiesTest, PerspectiveLayerClippedByW) { 1813 // Perspective transforms need to take a different code path. 1814 // This test checks tile priorities of a perspective layer. 1815 1816 FakePictureLayerTilingClient client; 1817 scoped_ptr<TestablePictureLayerTiling> tiling; 1818 1819 gfx::Size device_viewport(800, 600); 1820 gfx::Size last_layer_bounds(200, 200); 1821 gfx::Size current_layer_bounds(200, 200); 1822 float current_layer_contents_scale = 1.f; 1823 gfx::Transform last_screen_transform; 1824 gfx::Transform current_screen_transform; 1825 double current_frame_time_in_seconds = 1.0; 1826 1827 // A 3d perspective layer rotated about its Y axis, translated to almost 1828 // fully offscreen. The left side will appear closer (i.e. larger in 2d) than 1829 // the right side, so the top-left tile will technically be closer than the 1830 // top-right. 1831 1832 // Translate layer to offscreen 1833 current_screen_transform.Translate(400.0, 970.0); 1834 // Apply perspective and rotation about the center of the layer 1835 current_screen_transform.Translate(100.0, 100.0); 1836 current_screen_transform.ApplyPerspectiveDepth(10.0); 1837 current_screen_transform.RotateAboutYAxis(10.0); 1838 current_screen_transform.Translate(-100.0, -100.0); 1839 last_screen_transform = current_screen_transform; 1840 1841 // Sanity check that this transform does cause w<0 clipping for the left side 1842 // of the layer, but not the right side. 1843 bool clipped; 1844 MathUtil::MapQuad(current_screen_transform, 1845 gfx::QuadF(gfx::RectF(0, 0, 100, 200)), 1846 &clipped); 1847 ASSERT_TRUE(clipped); 1848 1849 MathUtil::MapQuad(current_screen_transform, 1850 gfx::QuadF(gfx::RectF(100, 0, 100, 200)), 1851 &clipped); 1852 ASSERT_FALSE(clipped); 1853 1854 gfx::Rect viewport_in_layer_space = ViewportInLayerSpace( 1855 current_screen_transform, device_viewport); 1856 1857 client.SetTileSize(gfx::Size(100, 100)); 1858 client.set_tree(ACTIVE_TREE); 1859 tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale 1860 current_layer_bounds, 1861 &client); 1862 1863 tiling->UpdateTilePriorities(ACTIVE_TREE, 1864 viewport_in_layer_space, 1865 current_layer_contents_scale, 1866 current_frame_time_in_seconds, 1867 Occlusion()); 1868 1869 ASSERT_TRUE(tiling->TileAt(0, 0)); 1870 ASSERT_TRUE(tiling->TileAt(0, 1)); 1871 ASSERT_TRUE(tiling->TileAt(1, 0)); 1872 ASSERT_TRUE(tiling->TileAt(1, 1)); 1873 1874 // Left-side tiles will be clipped by the transform, so we have to assume 1875 // they are visible just in case. 1876 TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE); 1877 EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible); 1878 EXPECT_FLOAT_EQ(TilePriority::NOW, priority.priority_bin); 1879 1880 priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE); 1881 EXPECT_GT(priority.distance_to_visible, 0.f); 1882 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1883 1884 // Right-side tiles will have a positive distance_to_visible 1885 // and an infinite time_to_visible. 1886 priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE); 1887 EXPECT_FLOAT_EQ(priority.distance_to_visible, 0.f); 1888 EXPECT_EQ(TilePriority::NOW, priority.priority_bin); 1889 1890 priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE); 1891 EXPECT_GT(priority.distance_to_visible, 0.f); 1892 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1893 } 1894 1895 TEST(UpdateTilePrioritiesTest, BasicMotion) { 1896 // Test that time_to_visible is computed correctly when 1897 // there is some motion. 1898 1899 FakePictureLayerTilingClient client; 1900 scoped_ptr<TestablePictureLayerTiling> tiling; 1901 1902 gfx::Size device_viewport(800, 600); 1903 gfx::Rect visible_layer_rect(0, 0, 0, 0); 1904 gfx::Size last_layer_bounds(200, 200); 1905 gfx::Size current_layer_bounds(200, 200); 1906 float last_layer_contents_scale = 1.f; 1907 float current_layer_contents_scale = 1.f; 1908 gfx::Transform last_screen_transform; 1909 gfx::Transform current_screen_transform; 1910 double last_frame_time_in_seconds = 1.0; 1911 double current_frame_time_in_seconds = 2.0; 1912 1913 // Offscreen layer is coming closer to viewport at 1000 pixels per second. 1914 current_screen_transform.Translate(1800, 0); 1915 last_screen_transform.Translate(2800, 0); 1916 1917 gfx::Rect viewport_in_layer_space = ViewportInLayerSpace( 1918 current_screen_transform, device_viewport); 1919 1920 client.SetTileSize(gfx::Size(100, 100)); 1921 client.set_tree(ACTIVE_TREE); 1922 tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale 1923 current_layer_bounds, 1924 &client); 1925 1926 // previous ("last") frame 1927 tiling->UpdateTilePriorities(ACTIVE_TREE, 1928 viewport_in_layer_space, 1929 last_layer_contents_scale, 1930 last_frame_time_in_seconds, 1931 Occlusion()); 1932 1933 // current frame 1934 tiling->UpdateTilePriorities(ACTIVE_TREE, 1935 viewport_in_layer_space, 1936 current_layer_contents_scale, 1937 current_frame_time_in_seconds, 1938 Occlusion()); 1939 1940 ASSERT_TRUE(tiling->TileAt(0, 0)); 1941 ASSERT_TRUE(tiling->TileAt(0, 1)); 1942 ASSERT_TRUE(tiling->TileAt(1, 0)); 1943 ASSERT_TRUE(tiling->TileAt(1, 1)); 1944 1945 TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE); 1946 EXPECT_GT(priority.distance_to_visible, 0.f); 1947 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1948 1949 priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE); 1950 EXPECT_GT(priority.distance_to_visible, 0.f); 1951 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1952 1953 // time_to_visible for the right hand side layers needs an extra 0.099 1954 // seconds because this tile is 99 pixels further away. 1955 priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE); 1956 EXPECT_GT(priority.distance_to_visible, 0.f); 1957 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1958 1959 priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE); 1960 EXPECT_GT(priority.distance_to_visible, 0.f); 1961 EXPECT_NE(TilePriority::NOW, priority.priority_bin); 1962 } 1963 1964 TEST(UpdateTilePrioritiesTest, RotationMotion) { 1965 // Each tile of a layer may be affected differently by a transform; Check 1966 // that UpdateTilePriorities correctly accounts for the transform between 1967 // layer space and screen space. 1968 1969 FakePictureLayerTilingClient client; 1970 scoped_ptr<TestablePictureLayerTiling> tiling; 1971 1972 gfx::Size device_viewport(800, 600); 1973 gfx::Rect visible_layer_rect(0, 0, 0, 0); // offscren. 1974 gfx::Size last_layer_bounds(200, 200); 1975 gfx::Size current_layer_bounds(200, 200); 1976 float last_layer_contents_scale = 1.f; 1977 float current_layer_contents_scale = 1.f; 1978 gfx::Transform last_screen_transform; 1979 gfx::Transform current_screen_transform; 1980 double last_frame_time_in_seconds = 1.0; 1981 double current_frame_time_in_seconds = 2.0; 1982 1983 // Rotation motion is set up specifically so that: 1984 // - rotation occurs about the center of the layer 1985 // - the top-left tile becomes visible on rotation 1986 // - the top-right tile will have an infinite time_to_visible 1987 // because it is rotating away from viewport. 1988 // - bottom-left layer will have a positive non-zero time_to_visible 1989 // because it is rotating toward the viewport. 1990 current_screen_transform.Translate(400, 550); 1991 current_screen_transform.RotateAboutZAxis(45); 1992 1993 last_screen_transform.Translate(400, 550); 1994 1995 gfx::Rect viewport_in_layer_space = ViewportInLayerSpace( 1996 current_screen_transform, device_viewport); 1997 1998 client.SetTileSize(gfx::Size(100, 100)); 1999 client.set_tree(ACTIVE_TREE); 2000 tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale 2001 current_layer_bounds, 2002 &client); 2003 2004 // previous ("last") frame 2005 tiling->UpdateTilePriorities(ACTIVE_TREE, 2006 viewport_in_layer_space, 2007 last_layer_contents_scale, 2008 last_frame_time_in_seconds, 2009 Occlusion()); 2010 2011 // current frame 2012 tiling->UpdateTilePriorities(ACTIVE_TREE, 2013 viewport_in_layer_space, 2014 current_layer_contents_scale, 2015 current_frame_time_in_seconds, 2016 Occlusion()); 2017 2018 ASSERT_TRUE(tiling->TileAt(0, 0)); 2019 ASSERT_TRUE(tiling->TileAt(0, 1)); 2020 ASSERT_TRUE(tiling->TileAt(1, 0)); 2021 ASSERT_TRUE(tiling->TileAt(1, 1)); 2022 2023 TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE); 2024 EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible); 2025 EXPECT_EQ(TilePriority::NOW, priority.priority_bin); 2026 2027 priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE); 2028 EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible); 2029 EXPECT_EQ(TilePriority::NOW, priority.priority_bin); 2030 2031 priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE); 2032 EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible); 2033 EXPECT_EQ(TilePriority::NOW, priority.priority_bin); 2034 } 2035 2036 TEST(PictureLayerTilingTest, ResetClearsPriorities) { 2037 FakePictureLayerTilingClient client; 2038 scoped_ptr<TestablePictureLayerTiling> tiling; 2039 2040 client.SetTileSize(gfx::Size(100, 100)); 2041 client.set_tree(ACTIVE_TREE); 2042 tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale 2043 gfx::Size(100, 100), 2044 &client); 2045 tiling->UpdateTilePriorities( 2046 ACTIVE_TREE, gfx::Rect(0, 0, 100, 100), 1.0f, 1.0f, Occlusion()); 2047 2048 std::vector<scoped_refptr<Tile> > tiles = tiling->AllRefTilesForTesting(); 2049 ASSERT_GT(tiles.size(), 0u); 2050 for (std::vector<scoped_refptr<Tile> >::const_iterator it = tiles.begin(); 2051 it != tiles.end(); 2052 ++it) { 2053 EXPECT_NE(TilePriority(), (*it)->priority(ACTIVE_TREE)); 2054 } 2055 2056 tiling->Reset(); 2057 for (std::vector<scoped_refptr<Tile> >::const_iterator it = tiles.begin(); 2058 it != tiles.end(); 2059 ++it) { 2060 EXPECT_EQ(TilePriority(), (*it)->priority(ACTIVE_TREE)); 2061 } 2062 tiles.clear(); 2063 } 2064 2065 TEST(PictureLayerTilingTest, RecycledTilesCleared) { 2066 // This test performs the following: 2067 // Setup: 2068 // - Two tilings, one active one recycled with all tiles shared. 2069 // Procedure: 2070 // - Viewport moves somewhere far away and active tiling clears tiles. 2071 // - Viewport moves back and a new active tiling tile is created. 2072 // Result: 2073 // - Recycle tiling does _not_ have the tile in the same location (thus it 2074 // will be shared next time a pending tiling is created). 2075 2076 FakePictureLayerTilingClient active_client; 2077 scoped_ptr<TestablePictureLayerTiling> active_tiling; 2078 2079 active_client.SetTileSize(gfx::Size(100, 100)); 2080 active_client.set_tree(ACTIVE_TREE); 2081 active_client.set_max_tiles_for_interest_area(10); 2082 active_tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale 2083 gfx::Size(10000, 10000), 2084 &active_client); 2085 // Create all tiles on this tiling. 2086 active_tiling->UpdateTilePriorities( 2087 ACTIVE_TREE, gfx::Rect(0, 0, 100, 100), 1.0f, 1.0f, Occlusion()); 2088 2089 FakePictureLayerTilingClient recycle_client; 2090 recycle_client.SetTileSize(gfx::Size(100, 100)); 2091 recycle_client.set_tree(PENDING_TREE); 2092 recycle_client.set_twin_tiling(active_tiling.get()); 2093 recycle_client.set_max_tiles_for_interest_area(10); 2094 2095 scoped_ptr<TestablePictureLayerTiling> recycle_tiling; 2096 recycle_tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale 2097 gfx::Size(10000, 10000), 2098 &recycle_client); 2099 2100 // Create all tiles on the second tiling. All tiles should be shared. 2101 recycle_tiling->UpdateTilePriorities( 2102 PENDING_TREE, gfx::Rect(0, 0, 100, 100), 1.0f, 1.0f, Occlusion()); 2103 2104 // Set the second tiling as recycled. 2105 active_client.set_twin_tiling(NULL); 2106 active_client.set_recycled_twin_tiling(recycle_tiling.get()); 2107 recycle_client.set_twin_tiling(NULL); 2108 2109 // Verify that tiles exist and are shared. 2110 EXPECT_TRUE(active_tiling->TileAt(0, 0)); 2111 EXPECT_TRUE(recycle_tiling->TileAt(0, 0)); 2112 EXPECT_EQ(active_tiling->TileAt(0, 0), recycle_tiling->TileAt(0, 0)); 2113 2114 // Move the viewport far away from the (0, 0) tile. 2115 active_tiling->UpdateTilePriorities( 2116 ACTIVE_TREE, gfx::Rect(9000, 9000, 100, 100), 1.0f, 2.0, Occlusion()); 2117 // Ensure the tile was deleted on both tilings. 2118 EXPECT_FALSE(active_tiling->TileAt(0, 0)); 2119 EXPECT_FALSE(recycle_tiling->TileAt(0, 0)); 2120 2121 // Move the viewport back to (0, 0) tile. 2122 active_tiling->UpdateTilePriorities( 2123 ACTIVE_TREE, gfx::Rect(0, 0, 100, 100), 1.0f, 3.0, Occlusion()); 2124 2125 // Ensure that we now have a tile here, but the recycle tiling does not. 2126 EXPECT_TRUE(active_tiling->TileAt(0, 0)); 2127 EXPECT_FALSE(recycle_tiling->TileAt(0, 0)); 2128 } 2129 2130 TEST(PictureLayerTilingTest, RecycledTilesClearedOnReset) { 2131 FakePictureLayerTilingClient active_client; 2132 scoped_ptr<TestablePictureLayerTiling> active_tiling; 2133 2134 active_client.SetTileSize(gfx::Size(100, 100)); 2135 active_client.set_tree(ACTIVE_TREE); 2136 active_tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale 2137 gfx::Size(100, 100), 2138 &active_client); 2139 // Create all tiles on this tiling. 2140 active_tiling->UpdateTilePriorities( 2141 ACTIVE_TREE, gfx::Rect(0, 0, 100, 100), 1.0f, 1.0f, Occlusion()); 2142 2143 FakePictureLayerTilingClient recycle_client; 2144 recycle_client.SetTileSize(gfx::Size(100, 100)); 2145 recycle_client.set_tree(PENDING_TREE); 2146 recycle_client.set_twin_tiling(active_tiling.get()); 2147 recycle_client.set_max_tiles_for_interest_area(10); 2148 2149 scoped_ptr<TestablePictureLayerTiling> recycle_tiling; 2150 recycle_tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale 2151 gfx::Size(100, 100), 2152 &recycle_client); 2153 2154 // Create all tiles on the recycle tiling. All tiles should be shared. 2155 recycle_tiling->UpdateTilePriorities( 2156 PENDING_TREE, gfx::Rect(0, 0, 100, 100), 1.0f, 1.0f, Occlusion()); 2157 2158 // Set the second tiling as recycled. 2159 active_client.set_twin_tiling(NULL); 2160 active_client.set_recycled_twin_tiling(recycle_tiling.get()); 2161 recycle_client.set_twin_tiling(NULL); 2162 2163 // Verify that tiles exist and are shared. 2164 EXPECT_TRUE(active_tiling->TileAt(0, 0)); 2165 EXPECT_TRUE(recycle_tiling->TileAt(0, 0)); 2166 EXPECT_EQ(active_tiling->TileAt(0, 0), recycle_tiling->TileAt(0, 0)); 2167 2168 // Reset the active tiling. The recycle tiles should be released too. 2169 active_tiling->Reset(); 2170 EXPECT_FALSE(active_tiling->TileAt(0, 0)); 2171 EXPECT_FALSE(recycle_tiling->TileAt(0, 0)); 2172 } 2173 2174 } // namespace 2175 } // namespace cc 2176
