cc/layers/tiled_layer_impl_unittest.cc - chromium/src - Git at Google

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 #include "cc/layers/tiled_layer_impl.h"

 #include "cc/layers/append_quads_data.h"
 #include "cc/quads/tile_draw_quad.h"
 #include "cc/resources/layer_tiling_data.h"
 #include "cc/test/fake_impl_proxy.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
 #include "cc/test/layer_test_common.h"
 #include "cc/test/mock_quad_culler.h"
 #include "cc/trees/single_thread_proxy.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"

 namespace cc {
 namespace {

 class TiledLayerImplTest : public testing::Test {
  public:
   TiledLayerImplTest() : host_impl_(&proxy_) {}

   scoped_ptr<TiledLayerImpl> CreateLayerNoTiles(
       gfx::Size tile_size,
       gfx::Size layer_size,
       LayerTilingData::BorderTexelOption border_texels) {
     scoped_ptr<TiledLayerImpl> layer =
         TiledLayerImpl::Create(host_impl_.active_tree(), 1);
     scoped_ptr<LayerTilingData> tiler =
         LayerTilingData::Create(tile_size, border_texels);
     tiler->SetBounds(layer_size);
     layer->SetTilingData(*tiler);
     layer->set_skips_draw(false);
     layer->draw_properties().visible_content_rect =
         gfx::Rect(layer_size);
     layer->draw_properties().opacity = 1;
     layer->SetBounds(layer_size);
     layer->SetContentBounds(layer_size);
     layer->CreateRenderSurface();
     layer->draw_properties().render_target = layer.get();
     return layer.Pass();
   }

   // Create a default tiled layer with textures for all tiles and a default
   // visibility of the entire layer size.
   scoped_ptr<TiledLayerImpl> CreateLayer(
       gfx::Size tile_size,
       gfx::Size layer_size,
       LayerTilingData::BorderTexelOption border_texels) {
     scoped_ptr<TiledLayerImpl> layer =
         CreateLayerNoTiles(tile_size, layer_size, border_texels);

     layer->SetDrawsContent(true);

     ResourceProvider::ResourceId resource_id = 1;
     for (int i = 0; i < layer->TilingForTesting()->num_tiles_x(); ++i) {
       for (int j = 0; j < layer->TilingForTesting()->num_tiles_y(); ++j) {
         gfx::Rect opaque_rect(
             layer->TilingForTesting()->tile_bounds(i, j).origin(),
             gfx::Size(1, 1));
         layer->PushTileProperties(i, j, resource_id++, opaque_rect, false);
       }
     }

     return layer.Pass();
   }

   void GetQuads(QuadList* quads,
                 SharedQuadStateList* shared_states,
                 gfx::Size tile_size,
                 gfx::Size layer_size,
                 LayerTilingData::BorderTexelOption border_texel_option,
                 gfx::Rect visible_content_rect) {
     scoped_ptr<TiledLayerImpl> layer =
         CreateLayer(tile_size, layer_size, border_texel_option);
     layer->draw_properties().visible_content_rect = visible_content_rect;
     layer->SetBounds(layer_size);

     MockQuadCuller quad_culler(quads, shared_states);
     AppendQuadsData data;
     layer->AppendQuads(&quad_culler, &data);
   }

  protected:
   FakeImplProxy proxy_;
   FakeLayerTreeHostImpl host_impl_;
 };

 TEST_F(TiledLayerImplTest, EmptyQuadList) {
   gfx::Size tile_size(90, 90);
   int num_tiles_x = 8;
   int num_tiles_y = 4;
   gfx::Size layer_size(tile_size.width() * num_tiles_x,
                        tile_size.height() * num_tiles_y);

   // Verify default layer does creates quads
   {
     scoped_ptr<TiledLayerImpl> layer =
         CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);
     MockQuadCuller quad_culler;
     AppendQuadsData data;
     EXPECT_TRUE(layer->WillDraw(DRAW_MODE_HARDWARE, NULL));
     layer->AppendQuads(&quad_culler, &data);
     layer->DidDraw(NULL);
     unsigned num_tiles = num_tiles_x * num_tiles_y;
     EXPECT_EQ(quad_culler.quad_list().size(), num_tiles);
   }

   // Layer with empty visible layer rect produces no quads
   {
     scoped_ptr<TiledLayerImpl> layer =
         CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);
     layer->draw_properties().visible_content_rect = gfx::Rect();

     MockQuadCuller quad_culler;
     EXPECT_FALSE(layer->WillDraw(DRAW_MODE_HARDWARE, NULL));
   }

   // Layer with non-intersecting visible layer rect produces no quads
   {
     scoped_ptr<TiledLayerImpl> layer =
         CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);

     gfx::Rect outside_bounds(-100, -100, 50, 50);
     layer->draw_properties().visible_content_rect = outside_bounds;

     MockQuadCuller quad_culler;
     AppendQuadsData data;
     EXPECT_TRUE(layer->WillDraw(DRAW_MODE_HARDWARE, NULL));
     layer->AppendQuads(&quad_culler, &data);
     layer->DidDraw(NULL);
     EXPECT_EQ(quad_culler.quad_list().size(), 0u);
   }

   // Layer with skips draw produces no quads
   {
     scoped_ptr<TiledLayerImpl> layer =
         CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);
     layer->set_skips_draw(true);

     MockQuadCuller quad_culler;
     AppendQuadsData data;
     layer->AppendQuads(&quad_culler, &data);
     EXPECT_EQ(quad_culler.quad_list().size(), 0u);
   }
 }

 TEST_F(TiledLayerImplTest, Checkerboarding) {
   gfx::Size tile_size(10, 10);
   int num_tiles_x = 2;
   int num_tiles_y = 2;
   gfx::Size layer_size(tile_size.width() * num_tiles_x,
                        tile_size.height() * num_tiles_y);

   scoped_ptr<TiledLayerImpl> layer =
       CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);

   // No checkerboarding
   {
     MockQuadCuller quad_culler;
     AppendQuadsData data;
     layer->AppendQuads(&quad_culler, &data);
     EXPECT_EQ(quad_culler.quad_list().size(), 4u);
     EXPECT_EQ(0u, data.num_missing_tiles);

     for (size_t i = 0; i < quad_culler.quad_list().size(); ++i)
       EXPECT_EQ(quad_culler.quad_list()[i]->material, DrawQuad::TILED_CONTENT);
   }

   for (int i = 0; i < num_tiles_x; ++i)
     for (int j = 0; j < num_tiles_y; ++j)
       layer->PushTileProperties(i, j, 0, gfx::Rect(), false);

   // All checkerboarding
   {
     MockQuadCuller quad_culler;
     AppendQuadsData data;
     layer->AppendQuads(&quad_culler, &data);
     EXPECT_LT(0u, data.num_missing_tiles);
     EXPECT_EQ(quad_culler.quad_list().size(), 4u);
     for (size_t i = 0; i < quad_culler.quad_list().size(); ++i)
       EXPECT_NE(quad_culler.quad_list()[i]->material, DrawQuad::TILED_CONTENT);
   }
 }

 // Test with both border texels and without.
 #define WITH_AND_WITHOUT_BORDER_TEST(text_fixture_name)                        \
   TEST_F(TiledLayerImplBorderTest, text_fixture_name##NoBorders) {             \
     text_fixture_name(LayerTilingData::NO_BORDER_TEXELS);                      \
   }                                                                            \
   TEST_F(TiledLayerImplBorderTest, text_fixture_name##HasBorders) {            \
     text_fixture_name(LayerTilingData::HAS_BORDER_TEXELS);                     \
   }

 class TiledLayerImplBorderTest : public TiledLayerImplTest {
  public:
   void CoverageVisibleRectOnTileBoundaries(
       LayerTilingData::BorderTexelOption borders) {
     gfx::Size layer_size(1000, 1000);
     QuadList quads;
     SharedQuadStateList shared_states;
     GetQuads(&quads,
              &shared_states,
              gfx::Size(100, 100),
              layer_size,
              borders,
              gfx::Rect(layer_size));
     LayerTestCommon::VerifyQuadsExactlyCoverRect(quads, gfx::Rect(layer_size));
   }

   void CoverageVisibleRectIntersectsTiles(
       LayerTilingData::BorderTexelOption borders) {
     // This rect intersects the middle 3x3 of the 5x5 tiles.
     gfx::Point top_left(65, 73);
     gfx::Point bottom_right(182, 198);
     gfx::Rect visible_content_rect = gfx::BoundingRect(top_left, bottom_right);

     gfx::Size layer_size(250, 250);
     QuadList quads;
     SharedQuadStateList shared_states;
     GetQuads(&quads,
              &shared_states,
              gfx::Size(50, 50),
              gfx::Size(250, 250),
              LayerTilingData::NO_BORDER_TEXELS,
              visible_content_rect);
     LayerTestCommon::VerifyQuadsExactlyCoverRect(quads, visible_content_rect);
   }

   void CoverageVisibleRectIntersectsBounds(
       LayerTilingData::BorderTexelOption borders) {
     gfx::Size layer_size(220, 210);
     gfx::Rect visible_content_rect(layer_size);
     QuadList quads;
     SharedQuadStateList shared_states;
     GetQuads(&quads,
              &shared_states,
              gfx::Size(100, 100),
              layer_size,
              LayerTilingData::NO_BORDER_TEXELS,
              visible_content_rect);
     LayerTestCommon::VerifyQuadsExactlyCoverRect(quads, visible_content_rect);
   }
 };
 WITH_AND_WITHOUT_BORDER_TEST(CoverageVisibleRectOnTileBoundaries);

 WITH_AND_WITHOUT_BORDER_TEST(CoverageVisibleRectIntersectsTiles);

 WITH_AND_WITHOUT_BORDER_TEST(CoverageVisibleRectIntersectsBounds);

 TEST_F(TiledLayerImplTest, TextureInfoForLayerNoBorders) {
   gfx::Size tile_size(50, 50);
   gfx::Size layer_size(250, 250);
   QuadList quads;
   SharedQuadStateList shared_states;
   GetQuads(&quads,
            &shared_states,
            tile_size,
            layer_size,
            LayerTilingData::NO_BORDER_TEXELS,
            gfx::Rect(layer_size));

   for (size_t i = 0; i < quads.size(); ++i) {
     const TileDrawQuad* quad = TileDrawQuad::MaterialCast(quads[i]);

     EXPECT_NE(0u, quad->resource_id) << LayerTestCommon::quad_string << i;
     EXPECT_EQ(gfx::RectF(gfx::PointF(), tile_size), quad->tex_coord_rect)
         << LayerTestCommon::quad_string << i;
     EXPECT_EQ(tile_size, quad->texture_size) << LayerTestCommon::quad_string
                                              << i;
     EXPECT_EQ(gfx::Size(1, 1).ToString(), quad->opaque_rect.size().ToString())
         << LayerTestCommon::quad_string << i;
   }
 }

 TEST_F(TiledLayerImplTest, GPUMemoryUsage) {
   gfx::Size tile_size(20, 30);
   int num_tiles_x = 12;
   int num_tiles_y = 32;
   gfx::Size layer_size(tile_size.width() * num_tiles_x,
                        tile_size.height() * num_tiles_y);

   scoped_ptr<TiledLayerImpl> layer = CreateLayerNoTiles(
       tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);

   EXPECT_EQ(layer->GPUMemoryUsageInBytes(), 0u);

   ResourceProvider::ResourceId resource_id = 1;
   layer->PushTileProperties(0, 1, resource_id++, gfx::Rect(0, 0, 1, 1), false);
   layer->PushTileProperties(2, 3, resource_id++, gfx::Rect(0, 0, 1, 1), false);
   layer->PushTileProperties(2, 0, resource_id++, gfx::Rect(0, 0, 1, 1), false);

   EXPECT_EQ(
       layer->GPUMemoryUsageInBytes(),
       static_cast<size_t>(3 * 4 * tile_size.width() * tile_size.height()));

   ResourceProvider::ResourceId empty_resource(0);
   layer->PushTileProperties(0, 1, empty_resource, gfx::Rect(0, 0, 1, 1), false);
   layer->PushTileProperties(2, 3, empty_resource, gfx::Rect(0, 0, 1, 1), false);
   layer->PushTileProperties(2, 0, empty_resource, gfx::Rect(0, 0, 1, 1), false);

   EXPECT_EQ(layer->GPUMemoryUsageInBytes(), 0u);
 }

 }  // namespace
 }  // namespace cc
	// Copyright 2012 The Chromium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	#include "cc/layers/tiled_layer_impl.h"

	#include "cc/layers/append_quads_data.h"
	#include "cc/quads/tile_draw_quad.h"
	#include "cc/resources/layer_tiling_data.h"
	#include "cc/test/fake_impl_proxy.h"
	#include "cc/test/fake_layer_tree_host_impl.h"
	#include "cc/test/layer_test_common.h"
	#include "cc/test/mock_quad_culler.h"
	#include "cc/trees/single_thread_proxy.h"
	#include "testing/gmock/include/gmock/gmock.h"
	#include "testing/gtest/include/gtest/gtest.h"

	namespace cc {
	namespace {

	class TiledLayerImplTest : public testing::Test {
	public:
	TiledLayerImplTest() : host_impl_(&proxy_) {}

	scoped_ptr<TiledLayerImpl> CreateLayerNoTiles(
	gfx::Size tile_size,
	gfx::Size layer_size,
	LayerTilingData::BorderTexelOption border_texels) {
	scoped_ptr<TiledLayerImpl> layer =
	TiledLayerImpl::Create(host_impl_.active_tree(), 1);
	scoped_ptr<LayerTilingData> tiler =
	LayerTilingData::Create(tile_size, border_texels);
	tiler->SetBounds(layer_size);
	layer->SetTilingData(*tiler);
	layer->set_skips_draw(false);
	layer->draw_properties().visible_content_rect =
	gfx::Rect(layer_size);
	layer->draw_properties().opacity = 1;
	layer->SetBounds(layer_size);
	layer->SetContentBounds(layer_size);
	layer->CreateRenderSurface();
	layer->draw_properties().render_target = layer.get();
	return layer.Pass();
	}

	// Create a default tiled layer with textures for all tiles and a default
	// visibility of the entire layer size.
	scoped_ptr<TiledLayerImpl> CreateLayer(
	gfx::Size tile_size,
	gfx::Size layer_size,
	LayerTilingData::BorderTexelOption border_texels) {
	scoped_ptr<TiledLayerImpl> layer =
	CreateLayerNoTiles(tile_size, layer_size, border_texels);

	layer->SetDrawsContent(true);

	ResourceProvider::ResourceId resource_id = 1;
	for (int i = 0; i < layer->TilingForTesting()->num_tiles_x(); ++i) {
	for (int j = 0; j < layer->TilingForTesting()->num_tiles_y(); ++j) {
	gfx::Rect opaque_rect(
	layer->TilingForTesting()->tile_bounds(i, j).origin(),
	gfx::Size(1, 1));
	layer->PushTileProperties(i, j, resource_id++, opaque_rect, false);
	}
	}

	return layer.Pass();
	}

	void GetQuads(QuadList* quads,
	SharedQuadStateList* shared_states,
	gfx::Size tile_size,
	gfx::Size layer_size,
	LayerTilingData::BorderTexelOption border_texel_option,
	gfx::Rect visible_content_rect) {
	scoped_ptr<TiledLayerImpl> layer =
	CreateLayer(tile_size, layer_size, border_texel_option);
	layer->draw_properties().visible_content_rect = visible_content_rect;
	layer->SetBounds(layer_size);

	MockQuadCuller quad_culler(quads, shared_states);
	AppendQuadsData data;
	layer->AppendQuads(&quad_culler, &data);
	}

	protected:
	FakeImplProxy proxy_;
	FakeLayerTreeHostImpl host_impl_;
	};

	TEST_F(TiledLayerImplTest, EmptyQuadList) {
	gfx::Size tile_size(90, 90);
	int num_tiles_x = 8;
	int num_tiles_y = 4;
	gfx::Size layer_size(tile_size.width() * num_tiles_x,
	tile_size.height() * num_tiles_y);

	// Verify default layer does creates quads
	{
	scoped_ptr<TiledLayerImpl> layer =
	CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);
	MockQuadCuller quad_culler;
	AppendQuadsData data;
	EXPECT_TRUE(layer->WillDraw(DRAW_MODE_HARDWARE, NULL));
	layer->AppendQuads(&quad_culler, &data);
	layer->DidDraw(NULL);
	unsigned num_tiles = num_tiles_x * num_tiles_y;
	EXPECT_EQ(quad_culler.quad_list().size(), num_tiles);
	}

	// Layer with empty visible layer rect produces no quads
	{
	scoped_ptr<TiledLayerImpl> layer =
	CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);
	layer->draw_properties().visible_content_rect = gfx::Rect();

	MockQuadCuller quad_culler;
	EXPECT_FALSE(layer->WillDraw(DRAW_MODE_HARDWARE, NULL));
	}

	// Layer with non-intersecting visible layer rect produces no quads
	{
	scoped_ptr<TiledLayerImpl> layer =
	CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);

	gfx::Rect outside_bounds(-100, -100, 50, 50);
	layer->draw_properties().visible_content_rect = outside_bounds;

	MockQuadCuller quad_culler;
	AppendQuadsData data;
	EXPECT_TRUE(layer->WillDraw(DRAW_MODE_HARDWARE, NULL));
	layer->AppendQuads(&quad_culler, &data);
	layer->DidDraw(NULL);
	EXPECT_EQ(quad_culler.quad_list().size(), 0u);
	}

	// Layer with skips draw produces no quads
	{
	scoped_ptr<TiledLayerImpl> layer =
	CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);
	layer->set_skips_draw(true);

	MockQuadCuller quad_culler;
	AppendQuadsData data;
	layer->AppendQuads(&quad_culler, &data);
	EXPECT_EQ(quad_culler.quad_list().size(), 0u);
	}
	}

	TEST_F(TiledLayerImplTest, Checkerboarding) {
	gfx::Size tile_size(10, 10);
	int num_tiles_x = 2;
	int num_tiles_y = 2;
	gfx::Size layer_size(tile_size.width() * num_tiles_x,
	tile_size.height() * num_tiles_y);

	scoped_ptr<TiledLayerImpl> layer =
	CreateLayer(tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);

	// No checkerboarding
	{
	MockQuadCuller quad_culler;
	AppendQuadsData data;
	layer->AppendQuads(&quad_culler, &data);
	EXPECT_EQ(quad_culler.quad_list().size(), 4u);
	EXPECT_EQ(0u, data.num_missing_tiles);

	for (size_t i = 0; i < quad_culler.quad_list().size(); ++i)
	EXPECT_EQ(quad_culler.quad_list()[i]->material, DrawQuad::TILED_CONTENT);
	}

	for (int i = 0; i < num_tiles_x; ++i)
	for (int j = 0; j < num_tiles_y; ++j)
	layer->PushTileProperties(i, j, 0, gfx::Rect(), false);

	// All checkerboarding
	{
	MockQuadCuller quad_culler;
	AppendQuadsData data;
	layer->AppendQuads(&quad_culler, &data);
	EXPECT_LT(0u, data.num_missing_tiles);
	EXPECT_EQ(quad_culler.quad_list().size(), 4u);
	for (size_t i = 0; i < quad_culler.quad_list().size(); ++i)
	EXPECT_NE(quad_culler.quad_list()[i]->material, DrawQuad::TILED_CONTENT);
	}
	}

	// Test with both border texels and without.
	#define WITH_AND_WITHOUT_BORDER_TEST(text_fixture_name) \
	TEST_F(TiledLayerImplBorderTest, text_fixture_name##NoBorders) { \
	text_fixture_name(LayerTilingData::NO_BORDER_TEXELS); \
	} \
	TEST_F(TiledLayerImplBorderTest, text_fixture_name##HasBorders) { \
	text_fixture_name(LayerTilingData::HAS_BORDER_TEXELS); \
	}

	class TiledLayerImplBorderTest : public TiledLayerImplTest {
	public:
	void CoverageVisibleRectOnTileBoundaries(
	LayerTilingData::BorderTexelOption borders) {
	gfx::Size layer_size(1000, 1000);
	QuadList quads;
	SharedQuadStateList shared_states;
	GetQuads(&quads,
	&shared_states,
	gfx::Size(100, 100),
	layer_size,
	borders,
	gfx::Rect(layer_size));
	LayerTestCommon::VerifyQuadsExactlyCoverRect(quads, gfx::Rect(layer_size));
	}

	void CoverageVisibleRectIntersectsTiles(
	LayerTilingData::BorderTexelOption borders) {
	// This rect intersects the middle 3x3 of the 5x5 tiles.
	gfx::Point top_left(65, 73);
	gfx::Point bottom_right(182, 198);
	gfx::Rect visible_content_rect = gfx::BoundingRect(top_left, bottom_right);

	gfx::Size layer_size(250, 250);
	QuadList quads;
	SharedQuadStateList shared_states;
	GetQuads(&quads,
	&shared_states,
	gfx::Size(50, 50),
	gfx::Size(250, 250),
	LayerTilingData::NO_BORDER_TEXELS,
	visible_content_rect);
	LayerTestCommon::VerifyQuadsExactlyCoverRect(quads, visible_content_rect);
	}

	void CoverageVisibleRectIntersectsBounds(
	LayerTilingData::BorderTexelOption borders) {
	gfx::Size layer_size(220, 210);
	gfx::Rect visible_content_rect(layer_size);
	QuadList quads;
	SharedQuadStateList shared_states;
	GetQuads(&quads,
	&shared_states,
	gfx::Size(100, 100),
	layer_size,
	LayerTilingData::NO_BORDER_TEXELS,
	visible_content_rect);
	LayerTestCommon::VerifyQuadsExactlyCoverRect(quads, visible_content_rect);
	}
	};
	WITH_AND_WITHOUT_BORDER_TEST(CoverageVisibleRectOnTileBoundaries);

	WITH_AND_WITHOUT_BORDER_TEST(CoverageVisibleRectIntersectsTiles);

	WITH_AND_WITHOUT_BORDER_TEST(CoverageVisibleRectIntersectsBounds);

	TEST_F(TiledLayerImplTest, TextureInfoForLayerNoBorders) {
	gfx::Size tile_size(50, 50);
	gfx::Size layer_size(250, 250);
	QuadList quads;
	SharedQuadStateList shared_states;
	GetQuads(&quads,
	&shared_states,
	tile_size,
	layer_size,
	LayerTilingData::NO_BORDER_TEXELS,
	gfx::Rect(layer_size));

	for (size_t i = 0; i < quads.size(); ++i) {
	const TileDrawQuad* quad = TileDrawQuad::MaterialCast(quads[i]);

	EXPECT_NE(0u, quad->resource_id) << LayerTestCommon::quad_string << i;
	EXPECT_EQ(gfx::RectF(gfx::PointF(), tile_size), quad->tex_coord_rect)
	<< LayerTestCommon::quad_string << i;
	EXPECT_EQ(tile_size, quad->texture_size) << LayerTestCommon::quad_string
	<< i;
	EXPECT_EQ(gfx::Size(1, 1).ToString(), quad->opaque_rect.size().ToString())
	<< LayerTestCommon::quad_string << i;
	}
	}

	TEST_F(TiledLayerImplTest, GPUMemoryUsage) {
	gfx::Size tile_size(20, 30);
	int num_tiles_x = 12;
	int num_tiles_y = 32;
	gfx::Size layer_size(tile_size.width() * num_tiles_x,
	tile_size.height() * num_tiles_y);

	scoped_ptr<TiledLayerImpl> layer = CreateLayerNoTiles(
	tile_size, layer_size, LayerTilingData::NO_BORDER_TEXELS);

	EXPECT_EQ(layer->GPUMemoryUsageInBytes(), 0u);

	ResourceProvider::ResourceId resource_id = 1;
	layer->PushTileProperties(0, 1, resource_id++, gfx::Rect(0, 0, 1, 1), false);
	layer->PushTileProperties(2, 3, resource_id++, gfx::Rect(0, 0, 1, 1), false);
	layer->PushTileProperties(2, 0, resource_id++, gfx::Rect(0, 0, 1, 1), false);

	EXPECT_EQ(
	layer->GPUMemoryUsageInBytes(),
	static_cast<size_t>(3 * 4 * tile_size.width() * tile_size.height()));

	ResourceProvider::ResourceId empty_resource(0);
	layer->PushTileProperties(0, 1, empty_resource, gfx::Rect(0, 0, 1, 1), false);
	layer->PushTileProperties(2, 3, empty_resource, gfx::Rect(0, 0, 1, 1), false);
	layer->PushTileProperties(2, 0, empty_resource, gfx::Rect(0, 0, 1, 1), false);

	EXPECT_EQ(layer->GPUMemoryUsageInBytes(), 0u);
	}

	} // namespace
	} // namespace cc