cc/layers/tiled_layer_impl_unittest.cc

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/layers/tiled_layer_impl.h"
   6
   7 #include "cc/layers/append_quads_data.h"
   8 #include "cc/quads/tile_draw_quad.h"
   9 #include "cc/resources/layer_tiling_data.h"
  10 #include "cc/test/fake_impl_proxy.h"
  11 #include "cc/test/fake_layer_tree_host_impl.h"
  12 #include "cc/test/layer_test_common.h"
  13 #include "cc/trees/single_thread_proxy.h"
  14 #include "testing/gmock/include/gmock/gmock.h"
  15 #include "testing/gtest/include/gtest/gtest.h"
  16
  17 namespace cc {
  18 namespace {
  19
  20 class TiledLayerImplTest : public testing::Test {
  21  public:
  22   TiledLayerImplTest() : host_impl_(&proxy_, &shared_bitmap_manager_) {}
  23
  24   scoped_ptr<TiledLayerImpl> CreateLayerNoTiles(
  25       const gfx::Size& tile_size,
  26       const gfx::Size& layer_size,
  27       LayerTilingData::BorderTexelOption border_texels) {
  28     scoped_ptr<TiledLayerImpl> layer =
  29         TiledLayerImpl::Create(host_impl_.active_tree(), 1);
  30     scoped_ptr<LayerTilingData> tiler =
  31         LayerTilingData::Create(tile_size, border_texels);
  32     tiler->SetTilingRect(gfx::Rect(layer_size));
  33     layer->SetTilingData(*tiler);
  34     layer->set_skips_draw(false);
  35     layer->draw_properties().visible_content_rect =
  36         gfx::Rect(layer_size);
  37     layer->draw_properties().opacity = 1;
  38     layer->SetBounds(layer_size);
  39     layer->SetContentBounds(layer_size);
  40     layer->CreateRenderSurface();
  41     layer->draw_properties().render_target = layer.get();
  42     return layer.Pass();
  43   }
  44
  45   // Create a default tiled layer with textures for all tiles and a default
  46   // visibility of the entire layer size.
  47   scoped_ptr<TiledLayerImpl> CreateLayer(
  48       const gfx::Size& tile_size,
  49       const gfx::Size& layer_size,
  50       LayerTilingData::BorderTexelOption border_texels) {
  51     scoped_ptr<TiledLayerImpl> layer =
  52         CreateLayerNoTiles(tile_size, layer_size, border_texels);
  53
  54     ResourceProvider::ResourceId resource_id = 1;
  55     for (int i = 0; i < layer->TilingForTesting()->num_tiles_x(); ++i) {
  56       for (int j = 0; j < layer->TilingForTesting()->num_tiles_y(); ++j) {
  57         gfx::Rect opaque_rect(
  58             layer->TilingForTesting()->tile_bounds(i, j).origin(),
  59             gfx::Size(1, 1));
  60         layer->PushTileProperties(i, j, resource_id++, opaque_rect, false);
  61       }
  62     }
  63
  64     return layer.Pass();
  65   }
  66
  67   void GetQuads(RenderPass* render_pass,
  68                 const gfx::Size& tile_size,
  69                 const gfx::Size& layer_size,
  70                 LayerTilingData::BorderTexelOption border_texel_option,
  71                 const gfx::Rect& visible_content_rect) {
  72     scoped_ptr<TiledLayerImpl> layer =
  73         CreateLayer(tile_size, layer_size, border_texel_option);
  74     layer->draw_properties().visible_content_rect = visible_content_rect;
  75     layer->SetBounds(layer_size);
  76
  77     MockOcclusionTracker<LayerImpl> occlusion_tracker;
  78     AppendQuadsData data;
  79     layer->AppendQuads(render_pass, occlusion_tracker, &data);
  80   }
  81
  82  protected:
  83   FakeImplProxy proxy_;
  84   TestSharedBitmapManager shared_bitmap_manager_;
  85   FakeLayerTreeHostImpl host_impl_;
  86 };
  87
  88 TEST_F(TiledLayerImplTest, EmptyQuadList) {
  89   gfx::Size tile_size(90, 90);
  90   int num_tiles_x = 8;
  91   int num_tiles_y = 4;
  92   gfx::Size layer_size(tile_size.width() * num_tiles_x,
  93                        tile_size.height() * num_tiles_y);
  94
  95   // Verify default layer does creates quads
  96   {
  97     scoped_ptr<TiledLayerImpl> layer =
  98         CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);
  99     MockOcclusionTracker<LayerImpl> occlusion_tracker;
 100     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 101
 102     AppendQuadsData data;
 103     EXPECT_TRUE(layer->WillDraw(DRAW_MODE_HARDWARE, NULL));
 104     layer->AppendQuads(render_pass.get(), occlusion_tracker, &data);
 105     layer->DidDraw(NULL);
 106     unsigned num_tiles = num_tiles_x * num_tiles_y;
 107     EXPECT_EQ(render_pass->quad_list.size(), num_tiles);
 108   }
 109
 110   // Layer with empty visible layer rect produces no quads
 111   {
 112     scoped_ptr<TiledLayerImpl> layer =
 113         CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);
 114     layer->draw_properties().visible_content_rect = gfx::Rect();
 115
 116     MockOcclusionTracker<LayerImpl> occlusion_tracker;
 117     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 118
 119     EXPECT_FALSE(layer->WillDraw(DRAW_MODE_HARDWARE, NULL));
 120   }
 121
 122   // Layer with non-intersecting visible layer rect produces no quads
 123   {
 124     scoped_ptr<TiledLayerImpl> layer =
 125         CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);
 126
 127     gfx::Rect outside_bounds(-100, -100, 50, 50);
 128     layer->draw_properties().visible_content_rect = outside_bounds;
 129
 130     MockOcclusionTracker<LayerImpl> occlusion_tracker;
 131     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 132
 133     AppendQuadsData data;
 134     EXPECT_TRUE(layer->WillDraw(DRAW_MODE_HARDWARE, NULL));
 135     layer->AppendQuads(render_pass.get(), occlusion_tracker, &data);
 136     layer->DidDraw(NULL);
 137     EXPECT_EQ(render_pass->quad_list.size(), 0u);
 138   }
 139
 140   // Layer with skips draw produces no quads
 141   {
 142     scoped_ptr<TiledLayerImpl> layer =
 143         CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);
 144     layer->set_skips_draw(true);
 145
 146     MockOcclusionTracker<LayerImpl> occlusion_tracker;
 147     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 148
 149     AppendQuadsData data;
 150     layer->AppendQuads(render_pass.get(), occlusion_tracker, &data);
 151     EXPECT_EQ(render_pass->quad_list.size(), 0u);
 152   }
 153 }
 154
 155 TEST_F(TiledLayerImplTest, Checkerboarding) {
 156   gfx::Size tile_size(10, 10);
 157   int num_tiles_x = 2;
 158   int num_tiles_y = 2;
 159   gfx::Size layer_size(tile_size.width() * num_tiles_x,
 160                        tile_size.height() * num_tiles_y);
 161
 162   scoped_ptr<TiledLayerImpl> layer =
 163       CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);
 164
 165   // No checkerboarding
 166   {
 167     MockOcclusionTracker<LayerImpl> occlusion_tracker;
 168     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 169
 170     AppendQuadsData data;
 171     layer->AppendQuads(render_pass.get(), occlusion_tracker, &data);
 172     EXPECT_EQ(render_pass->quad_list.size(), 4u);
 173     EXPECT_EQ(0u, data.num_missing_tiles);
 174
 175     for (size_t i = 0; i < render_pass->quad_list.size(); ++i)
 176       EXPECT_EQ(render_pass->quad_list[i]->material, DrawQuad::TILED_CONTENT);
 177   }
 178
 179   for (int i = 0; i < num_tiles_x; ++i)
 180     for (int j = 0; j < num_tiles_y; ++j)
 181       layer->PushTileProperties(i, j, 0, gfx::Rect(), false);
 182
 183   // All checkerboarding
 184   {
 185     MockOcclusionTracker<LayerImpl> occlusion_tracker;
 186     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 187
 188     AppendQuadsData data;
 189     layer->AppendQuads(render_pass.get(), occlusion_tracker, &data);
 190     EXPECT_LT(0u, data.num_missing_tiles);
 191     EXPECT_EQ(render_pass->quad_list.size(), 4u);
 192     for (size_t i = 0; i < render_pass->quad_list.size(); ++i)
 193       EXPECT_NE(render_pass->quad_list[i]->material, DrawQuad::TILED_CONTENT);
 194   }
 195 }
 196
 197 // Test with both border texels and without.
 198 #define WITH_AND_WITHOUT_BORDER_TEST(text_fixture_name)                        \
 199   TEST_F(TiledLayerImplBorderTest, text_fixture_name##NoBorders) {             \
 200     text_fixture_name(LayerTilingData::NO_BORDER_TEXELS);                      \
 201   }                                                                            \
 202   TEST_F(TiledLayerImplBorderTest, text_fixture_name##HasBorders) {            \
 203     text_fixture_name(LayerTilingData::HAS_BORDER_TEXELS);                     \
 204   }
 205
 206 class TiledLayerImplBorderTest : public TiledLayerImplTest {
 207  public:
 208   void CoverageVisibleRectOnTileBoundaries(
 209       LayerTilingData::BorderTexelOption borders) {
 210     gfx::Size layer_size(1000, 1000);
 211     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 212     GetQuads(render_pass.get(),
 213              gfx::Size(100, 100),
 214              layer_size,
 215              borders,
 216              gfx::Rect(layer_size));
 217     LayerTestCommon::VerifyQuadsExactlyCoverRect(render_pass->quad_list,
 218                                                  gfx::Rect(layer_size));
 219   }
 220
 221   void CoverageVisibleRectIntersectsTiles(
 222       LayerTilingData::BorderTexelOption borders) {
 223     // This rect intersects the middle 3x3 of the 5x5 tiles.
 224     gfx::Point top_left(65, 73);
 225     gfx::Point bottom_right(182, 198);
 226     gfx::Rect visible_content_rect = gfx::BoundingRect(top_left, bottom_right);
 227
 228     gfx::Size layer_size(250, 250);
 229     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 230     GetQuads(render_pass.get(),
 231              gfx::Size(50, 50),
 232              gfx::Size(250, 250),
 233              LayerTilingData::NO_BORDER_TEXELS,
 234              visible_content_rect);
 235     LayerTestCommon::VerifyQuadsExactlyCoverRect(render_pass->quad_list,
 236                                                  visible_content_rect);
 237   }
 238
 239   void CoverageVisibleRectIntersectsBounds(
 240       LayerTilingData::BorderTexelOption borders) {
 241     gfx::Size layer_size(220, 210);
 242     gfx::Rect visible_content_rect(layer_size);
 243     scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 244     GetQuads(render_pass.get(),
 245              gfx::Size(100, 100),
 246              layer_size,
 247              LayerTilingData::NO_BORDER_TEXELS,
 248              visible_content_rect);
 249     LayerTestCommon::VerifyQuadsExactlyCoverRect(render_pass->quad_list,
 250                                                  visible_content_rect);
 251   }
 252 };
 253 WITH_AND_WITHOUT_BORDER_TEST(CoverageVisibleRectOnTileBoundaries);
 254
 255 WITH_AND_WITHOUT_BORDER_TEST(CoverageVisibleRectIntersectsTiles);
 256
 257 WITH_AND_WITHOUT_BORDER_TEST(CoverageVisibleRectIntersectsBounds);
 258
 259 TEST_F(TiledLayerImplTest, TextureInfoForLayerNoBorders) {
 260   gfx::Size tile_size(50, 50);
 261   gfx::Size layer_size(250, 250);
 262   scoped_ptr<RenderPass> render_pass = RenderPass::Create();
 263   GetQuads(render_pass.get(),
 264            tile_size,
 265            layer_size,
 266            LayerTilingData::NO_BORDER_TEXELS,
 267            gfx::Rect(layer_size));
 268
 269   for (size_t i = 0; i < render_pass->quad_list.size(); ++i) {
 270     const TileDrawQuad* quad =
 271         TileDrawQuad::MaterialCast(render_pass->quad_list[i]);
 272
 273     EXPECT_NE(0u, quad->resource_id) << LayerTestCommon::quad_string << i;
 274     EXPECT_EQ(gfx::RectF(gfx::PointF(), tile_size), quad->tex_coord_rect)
 275         << LayerTestCommon::quad_string << i;
 276     EXPECT_EQ(tile_size, quad->texture_size) << LayerTestCommon::quad_string
 277                                              << i;
 278     EXPECT_EQ(gfx::Size(1, 1).ToString(), quad->opaque_rect.size().ToString())
 279         << LayerTestCommon::quad_string << i;
 280   }
 281 }
 282
 283 TEST_F(TiledLayerImplTest, GPUMemoryUsage) {
 284   gfx::Size tile_size(20, 30);
 285   int num_tiles_x = 12;
 286   int num_tiles_y = 32;
 287   gfx::Size layer_size(tile_size.width() * num_tiles_x,
 288                        tile_size.height() * num_tiles_y);
 289
 290   scoped_ptr<TiledLayerImpl> layer = CreateLayerNoTiles(
 291       tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);
 292
 293   EXPECT_EQ(layer->GPUMemoryUsageInBytes(), 0u);
 294
 295   ResourceProvider::ResourceId resource_id = 1;
 296   layer->PushTileProperties(0, 1, resource_id++, gfx::Rect(0, 0, 1, 1), false);
 297   layer->PushTileProperties(2, 3, resource_id++, gfx::Rect(0, 0, 1, 1), false);
 298   layer->PushTileProperties(2, 0, resource_id++, gfx::Rect(0, 0, 1, 1), false);
 299
 300   EXPECT_EQ(
 301       layer->GPUMemoryUsageInBytes(),
 302       static_cast<size_t>(3 * 4 * tile_size.width() * tile_size.height()));
 303
 304   ResourceProvider::ResourceId empty_resource(0);
 305   layer->PushTileProperties(0, 1, empty_resource, gfx::Rect(0, 0, 1, 1), false);
 306   layer->PushTileProperties(2, 3, empty_resource, gfx::Rect(0, 0, 1, 1), false);
 307   layer->PushTileProperties(2, 0, empty_resource, gfx::Rect(0, 0, 1, 1), false);
 308
 309   EXPECT_EQ(layer->GPUMemoryUsageInBytes(), 0u);
 310 }
 311
 312 TEST_F(TiledLayerImplTest, EmptyMask) {
 313   gfx::Size tile_size(20, 20);
 314   gfx::Size layer_size(0, 0);
 315   scoped_ptr<TiledLayerImpl> layer =
 316       CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);
 317
 318   EXPECT_EQ(0u, layer->ContentsResourceId());
 319   EXPECT_EQ(0, layer->TilingForTesting()->num_tiles_x());
 320   EXPECT_EQ(0, layer->TilingForTesting()->num_tiles_y());
 321 }
 322
 323 TEST_F(TiledLayerImplTest, Occlusion) {
 324   gfx::Size tile_size(100, 100);
 325   gfx::Size layer_bounds(1000, 1000);
 326   gfx::Size viewport_size(1000, 1000);
 327
 328   LayerTestCommon::LayerImplTest impl;
 329
 330   TiledLayerImpl* tiled_layer = impl.AddChildToRoot<TiledLayerImpl>();
 331   tiled_layer->SetBounds(layer_bounds);
 332   tiled_layer->SetContentBounds(layer_bounds);
 333   tiled_layer->SetDrawsContent(true);
 334   tiled_layer->set_skips_draw(false);
 335
 336   scoped_ptr<LayerTilingData> tiler =
 337       LayerTilingData::Create(tile_size, LayerTilingData::NO_BORDER_TEXELS);
 338   tiler->SetTilingRect(gfx::Rect(layer_bounds));
 339   tiled_layer->SetTilingData(*tiler);
 340
 341   ResourceProvider::ResourceId resource_id = 1;
 342   for (int i = 0; i < tiled_layer->TilingForTesting()->num_tiles_x(); ++i) {
 343     for (int j = 0; j < tiled_layer->TilingForTesting()->num_tiles_y(); ++j)
 344       tiled_layer->PushTileProperties(i, j, resource_id++, gfx::Rect(), false);
 345   }
 346
 347   impl.CalcDrawProps(viewport_size);
 348
 349   {
 350     SCOPED_TRACE("No occlusion");
 351     gfx::Rect occluded;
 352     impl.AppendQuadsWithOcclusion(tiled_layer, occluded);
 353
 354     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(),
 355                                                  gfx::Rect(layer_bounds));
 356     EXPECT_EQ(100u, impl.quad_list().size());
 357   }
 358
 359   {
 360     SCOPED_TRACE("Full occlusion");
 361     gfx::Rect occluded(tiled_layer->visible_content_rect());
 362     impl.AppendQuadsWithOcclusion(tiled_layer, occluded);
 363
 364     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(), gfx::Rect());
 365     EXPECT_EQ(impl.quad_list().size(), 0u);
 366   }
 367
 368   {
 369     SCOPED_TRACE("Partial occlusion");
 370     gfx::Rect occluded(150, 0, 200, 1000);
 371     impl.AppendQuadsWithOcclusion(tiled_layer, occluded);
 372
 373     size_t partially_occluded_count = 0;
 374     LayerTestCommon::VerifyQuadsCoverRectWithOcclusion(
 375         impl.quad_list(),
 376         gfx::Rect(layer_bounds),
 377         occluded,
 378         &partially_occluded_count);
 379     // The layer outputs one quad, which is partially occluded.
 380     EXPECT_EQ(100u - 10u, impl.quad_list().size());
 381     EXPECT_EQ(10u + 10u, partially_occluded_count);
 382   }
 383 }
 384
 385 }  // namespace
 386 }  // namespace cc