blob: a8caf48904b835f7e1c8905379fbedcfe6b1fb85 [file] [log] [blame]
// 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/resources/picture_layer_tiling.h"
#include <limits>
#include <set>
#include "cc/base/math_util.h"
#include "cc/resources/picture_layer_tiling_set.h"
#include "cc/test/fake_output_surface.h"
#include "cc/test/fake_output_surface_client.h"
#include "cc/test/fake_picture_layer_tiling_client.h"
#include "cc/test/test_context_provider.h"
#include "cc/test/test_shared_bitmap_manager.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/rect_conversions.h"
#include "ui/gfx/size_conversions.h"
namespace cc {
namespace {
static gfx::Rect ViewportInLayerSpace(
const gfx::Transform& transform,
const gfx::Size& device_viewport) {
gfx::Transform inverse;
if (!transform.GetInverse(&inverse))
return gfx::Rect();
gfx::RectF viewport_in_layer_space = MathUtil::ProjectClippedRect(
inverse, gfx::RectF(gfx::Point(0, 0), device_viewport));
return ToEnclosingRect(viewport_in_layer_space);
}
static void UpdateAllTilePriorities(PictureLayerTilingSet* set,
WhichTree tree,
const gfx::Rect& visible_layer_rect,
float layer_contents_scale,
double current_frame_time_in_seconds) {
for (size_t i = 0; i < set->num_tilings(); ++i) {
set->tiling_at(i)->UpdateTilePriorities(tree,
visible_layer_rect,
layer_contents_scale,
current_frame_time_in_seconds,
NULL,
NULL,
gfx::Transform());
}
}
class TestablePictureLayerTiling : public PictureLayerTiling {
public:
using PictureLayerTiling::SetLiveTilesRect;
using PictureLayerTiling::TileAt;
static scoped_ptr<TestablePictureLayerTiling> Create(
float contents_scale,
const gfx::Size& layer_bounds,
PictureLayerTilingClient* client) {
return make_scoped_ptr(new TestablePictureLayerTiling(
contents_scale,
layer_bounds,
client));
}
using PictureLayerTiling::ComputeSkewport;
protected:
TestablePictureLayerTiling(float contents_scale,
const gfx::Size& layer_bounds,
PictureLayerTilingClient* client)
: PictureLayerTiling(contents_scale, layer_bounds, client) { }
};
class PictureLayerTilingIteratorTest : public testing::Test {
public:
PictureLayerTilingIteratorTest() {}
virtual ~PictureLayerTilingIteratorTest() {}
void Initialize(const gfx::Size& tile_size,
float contents_scale,
const gfx::Size& layer_bounds) {
client_.SetTileSize(tile_size);
client_.set_tree(PENDING_TREE);
tiling_ = TestablePictureLayerTiling::Create(contents_scale,
layer_bounds,
&client_);
}
void SetLiveRectAndVerifyTiles(const gfx::Rect& live_tiles_rect) {
tiling_->SetLiveTilesRect(live_tiles_rect);
std::vector<Tile*> tiles = tiling_->AllTilesForTesting();
for (std::vector<Tile*>::iterator iter = tiles.begin();
iter != tiles.end();
++iter) {
EXPECT_TRUE(live_tiles_rect.Intersects((*iter)->content_rect()));
}
}
void VerifyTilesExactlyCoverRect(
float rect_scale,
const gfx::Rect& request_rect,
const gfx::Rect& expect_rect) {
EXPECT_TRUE(request_rect.Contains(expect_rect));
// Iterators are not valid if this ratio is too large (i.e. the
// tiling is too high-res for a low-res destination rect.) This is an
// artifact of snapping geometry to integer coordinates and then mapping
// back to floating point texture coordinates.
float dest_to_contents_scale = tiling_->contents_scale() / rect_scale;
ASSERT_LE(dest_to_contents_scale, 2.0);
Region remaining = expect_rect;
for (PictureLayerTiling::CoverageIterator
iter(tiling_.get(), rect_scale, request_rect);
iter;
++iter) {
// Geometry cannot overlap previous geometry at all
gfx::Rect geometry = iter.geometry_rect();
EXPECT_TRUE(expect_rect.Contains(geometry));
EXPECT_TRUE(remaining.Contains(geometry));
remaining.Subtract(geometry);
// Sanity check that texture coords are within the texture rect.
gfx::RectF texture_rect = iter.texture_rect();
EXPECT_GE(texture_rect.x(), 0);
EXPECT_GE(texture_rect.y(), 0);
EXPECT_LE(texture_rect.right(), client_.TileSize().width());
EXPECT_LE(texture_rect.bottom(), client_.TileSize().height());
EXPECT_EQ(iter.texture_size(), client_.TileSize());
}
// The entire rect must be filled by geometry from the tiling.
EXPECT_TRUE(remaining.IsEmpty());
}
void VerifyTilesExactlyCoverRect(float rect_scale, const gfx::Rect& rect) {
VerifyTilesExactlyCoverRect(rect_scale, rect, rect);
}
void VerifyTiles(
float rect_scale,
const gfx::Rect& rect,
base::Callback<void(Tile* tile,
const gfx::Rect& geometry_rect)> callback) {
VerifyTiles(tiling_.get(),
rect_scale,
rect,
callback);
}
void VerifyTiles(
PictureLayerTiling* tiling,
float rect_scale,
const gfx::Rect& rect,
base::Callback<void(Tile* tile,
const gfx::Rect& geometry_rect)> callback) {
Region remaining = rect;
for (PictureLayerTiling::CoverageIterator iter(tiling, rect_scale, rect);
iter;
++iter) {
remaining.Subtract(iter.geometry_rect());
callback.Run(*iter, iter.geometry_rect());
}
EXPECT_TRUE(remaining.IsEmpty());
}
void VerifyTilesCoverNonContainedRect(float rect_scale,
const gfx::Rect& dest_rect) {
float dest_to_contents_scale = tiling_->contents_scale() / rect_scale;
gfx::Rect clamped_rect = gfx::ScaleToEnclosingRect(
gfx::Rect(tiling_->tiling_size()), 1.f / dest_to_contents_scale);
clamped_rect.Intersect(dest_rect);
VerifyTilesExactlyCoverRect(rect_scale, dest_rect, clamped_rect);
}
void set_max_tiles_for_interest_area(size_t area) {
client_.set_max_tiles_for_interest_area(area);
}
protected:
FakePictureLayerTilingClient client_;
scoped_ptr<TestablePictureLayerTiling> tiling_;
private:
DISALLOW_COPY_AND_ASSIGN(PictureLayerTilingIteratorTest);
};
TEST_F(PictureLayerTilingIteratorTest, ResizeDeletesTiles) {
// Verifies that a resize with invalidation for newly exposed pixels will
// deletes tiles that intersect that invalidation.
gfx::Size tile_size(100, 100);
gfx::Size original_layer_size(10, 10);
Initialize(tile_size, 1.f, original_layer_size);
SetLiveRectAndVerifyTiles(gfx::Rect(original_layer_size));
// Tiling only has one tile, since its total size is less than one.
EXPECT_TRUE(tiling_->TileAt(0, 0));
// Stop creating tiles so that any invalidations are left as holes.
client_.set_allow_create_tile(false);
Region invalidation =
SubtractRegions(gfx::Rect(tile_size), gfx::Rect(original_layer_size));
tiling_->UpdateTilesToCurrentPile(invalidation, gfx::Size(200, 200));
EXPECT_FALSE(tiling_->TileAt(0, 0));
}
TEST_F(PictureLayerTilingIteratorTest, ResizeOverBorderPixelsDeletesTiles) {
// Verifies that a resize with invalidation for newly exposed pixels will
// deletes tiles that intersect that invalidation.
gfx::Size tile_size(100, 100);
gfx::Size original_layer_size(99, 99);
Initialize(tile_size, 1.f, original_layer_size);
SetLiveRectAndVerifyTiles(gfx::Rect(original_layer_size));
// Tiling only has one tile, since its total size is less than one.
EXPECT_TRUE(tiling_->TileAt(0, 0));
// Stop creating tiles so that any invalidations are left as holes.
client_.set_allow_create_tile(false);
Region invalidation =
SubtractRegions(gfx::Rect(tile_size), gfx::Rect(original_layer_size));
tiling_->UpdateTilesToCurrentPile(invalidation, gfx::Size(200, 200));
EXPECT_FALSE(tiling_->TileAt(0, 0));
// The original tile was the same size after resize, but it would include new
// border pixels.
EXPECT_EQ(gfx::Rect(original_layer_size),
tiling_->TilingDataForTesting().TileBounds(0, 0));
}
TEST_F(PictureLayerTilingIteratorTest, LiveTilesExactlyCoverLiveTileRect) {
Initialize(gfx::Size(100, 100), 1, gfx::Size(1099, 801));
SetLiveRectAndVerifyTiles(gfx::Rect(100, 100));
SetLiveRectAndVerifyTiles(gfx::Rect(101, 99));
SetLiveRectAndVerifyTiles(gfx::Rect(1099, 1));
SetLiveRectAndVerifyTiles(gfx::Rect(1, 801));
SetLiveRectAndVerifyTiles(gfx::Rect(1099, 1));
SetLiveRectAndVerifyTiles(gfx::Rect(201, 800));
}
TEST_F(PictureLayerTilingIteratorTest, IteratorCoversLayerBoundsNoScale) {
Initialize(gfx::Size(100, 100), 1, gfx::Size(1099, 801));
VerifyTilesExactlyCoverRect(1, gfx::Rect());
VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1099, 801));
VerifyTilesExactlyCoverRect(1, gfx::Rect(52, 83, 789, 412));
// With borders, a size of 3x3 = 1 pixel of content.
Initialize(gfx::Size(3, 3), 1, gfx::Size(10, 10));
VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1, 1));
VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 2, 2));
VerifyTilesExactlyCoverRect(1, gfx::Rect(1, 1, 2, 2));
VerifyTilesExactlyCoverRect(1, gfx::Rect(3, 2, 5, 2));
}
TEST_F(PictureLayerTilingIteratorTest, IteratorCoversLayerBoundsTilingScale) {
Initialize(gfx::Size(200, 100), 2.0f, gfx::Size(1005, 2010));
VerifyTilesExactlyCoverRect(1, gfx::Rect());
VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1005, 2010));
VerifyTilesExactlyCoverRect(1, gfx::Rect(50, 112, 512, 381));
Initialize(gfx::Size(3, 3), 2.0f, gfx::Size(10, 10));
VerifyTilesExactlyCoverRect(1, gfx::Rect());
VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1, 1));
VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 2, 2));
VerifyTilesExactlyCoverRect(1, gfx::Rect(1, 1, 2, 2));
VerifyTilesExactlyCoverRect(1, gfx::Rect(3, 2, 5, 2));
Initialize(gfx::Size(100, 200), 0.5f, gfx::Size(1005, 2010));
VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1005, 2010));
VerifyTilesExactlyCoverRect(1, gfx::Rect(50, 112, 512, 381));
Initialize(gfx::Size(150, 250), 0.37f, gfx::Size(1005, 2010));
VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1005, 2010));
VerifyTilesExactlyCoverRect(1, gfx::Rect(50, 112, 512, 381));
Initialize(gfx::Size(312, 123), 0.01f, gfx::Size(1005, 2010));
VerifyTilesExactlyCoverRect(1, gfx::Rect(0, 0, 1005, 2010));
VerifyTilesExactlyCoverRect(1, gfx::Rect(50, 112, 512, 381));
}
TEST_F(PictureLayerTilingIteratorTest, IteratorCoversLayerBoundsBothScale) {
Initialize(gfx::Size(50, 50), 4.0f, gfx::Size(800, 600));
VerifyTilesExactlyCoverRect(2.0f, gfx::Rect());
VerifyTilesExactlyCoverRect(2.0f, gfx::Rect(0, 0, 1600, 1200));
VerifyTilesExactlyCoverRect(2.0f, gfx::Rect(512, 365, 253, 182));
float scale = 6.7f;
gfx::Size bounds(800, 600);
gfx::Rect full_rect(gfx::ToCeiledSize(gfx::ScaleSize(bounds, scale)));
Initialize(gfx::Size(256, 512), 5.2f, bounds);
VerifyTilesExactlyCoverRect(scale, full_rect);
VerifyTilesExactlyCoverRect(scale, gfx::Rect(2014, 1579, 867, 1033));
}
TEST_F(PictureLayerTilingIteratorTest, IteratorEmptyRect) {
Initialize(gfx::Size(100, 100), 1.0f, gfx::Size(800, 600));
gfx::Rect empty;
PictureLayerTiling::CoverageIterator iter(tiling_.get(), 1.0f, empty);
EXPECT_FALSE(iter);
}
TEST_F(PictureLayerTilingIteratorTest, NonIntersectingRect) {
Initialize(gfx::Size(100, 100), 1.0f, gfx::Size(800, 600));
gfx::Rect non_intersecting(1000, 1000, 50, 50);
PictureLayerTiling::CoverageIterator iter(tiling_.get(), 1, non_intersecting);
EXPECT_FALSE(iter);
}
TEST_F(PictureLayerTilingIteratorTest, LayerEdgeTextureCoordinates) {
Initialize(gfx::Size(300, 300), 1.0f, gfx::Size(256, 256));
// All of these sizes are 256x256, scaled and ceiled.
VerifyTilesExactlyCoverRect(1.0f, gfx::Rect(0, 0, 256, 256));
VerifyTilesExactlyCoverRect(0.8f, gfx::Rect(0, 0, 205, 205));
VerifyTilesExactlyCoverRect(1.2f, gfx::Rect(0, 0, 308, 308));
}
TEST_F(PictureLayerTilingIteratorTest, NonContainedDestRect) {
Initialize(gfx::Size(100, 100), 1.0f, gfx::Size(400, 400));
// Too large in all dimensions
VerifyTilesCoverNonContainedRect(1.0f, gfx::Rect(-1000, -1000, 2000, 2000));
VerifyTilesCoverNonContainedRect(1.5f, gfx::Rect(-1000, -1000, 2000, 2000));
VerifyTilesCoverNonContainedRect(0.5f, gfx::Rect(-1000, -1000, 2000, 2000));
// Partially covering content, but too large
VerifyTilesCoverNonContainedRect(1.0f, gfx::Rect(-1000, 100, 2000, 100));
VerifyTilesCoverNonContainedRect(1.5f, gfx::Rect(-1000, 100, 2000, 100));
VerifyTilesCoverNonContainedRect(0.5f, gfx::Rect(-1000, 100, 2000, 100));
}
TEST(PictureLayerTilingTest, SkewportLimits) {
FakePictureLayerTilingClient client;
client.set_skewport_extrapolation_limit_in_content_pixels(75);
client.set_tree(ACTIVE_TREE);
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Rect viewport(0, 0, 100, 100);
gfx::Size layer_bounds(200, 200);
client.SetTileSize(gfx::Size(100, 100));
tiling = TestablePictureLayerTiling::Create(1.0f, layer_bounds, &client);
tiling->UpdateTilePriorities(
ACTIVE_TREE, viewport, 1.f, 1.0, NULL, NULL, gfx::Transform());
// Move viewport down 50 pixels in 0.5 seconds.
gfx::Rect down_skewport =
tiling->ComputeSkewport(1.5, gfx::Rect(0, 50, 100, 100));
EXPECT_EQ(0, down_skewport.x());
EXPECT_EQ(50, down_skewport.y());
EXPECT_EQ(100, down_skewport.width());
EXPECT_EQ(175, down_skewport.height());
EXPECT_TRUE(down_skewport.Contains(gfx::Rect(0, 50, 100, 100)));
// Move viewport down 50 and right 10 pixels.
gfx::Rect down_right_skewport =
tiling->ComputeSkewport(1.5, gfx::Rect(10, 50, 100, 100));
EXPECT_EQ(10, down_right_skewport.x());
EXPECT_EQ(50, down_right_skewport.y());
EXPECT_EQ(120, down_right_skewport.width());
EXPECT_EQ(175, down_right_skewport.height());
EXPECT_TRUE(down_right_skewport.Contains(gfx::Rect(10, 50, 100, 100)));
// Move viewport left.
gfx::Rect left_skewport =
tiling->ComputeSkewport(1.5, gfx::Rect(-50, 0, 100, 100));
EXPECT_EQ(-125, left_skewport.x());
EXPECT_EQ(0, left_skewport.y());
EXPECT_EQ(175, left_skewport.width());
EXPECT_EQ(100, left_skewport.height());
EXPECT_TRUE(left_skewport.Contains(gfx::Rect(-50, 0, 100, 100)));
// Expand viewport.
gfx::Rect expand_skewport =
tiling->ComputeSkewport(1.5, gfx::Rect(-50, -50, 200, 200));
// x and y moved by -75 (-50 - 75 = -125).
// right side and bottom side moved by 75 [(350 - 125) - (200 - 50) = 75].
EXPECT_EQ(-125, expand_skewport.x());
EXPECT_EQ(-125, expand_skewport.y());
EXPECT_EQ(350, expand_skewport.width());
EXPECT_EQ(350, expand_skewport.height());
EXPECT_TRUE(expand_skewport.Contains(gfx::Rect(-50, -50, 200, 200)));
// Expand the viewport past the limit.
gfx::Rect big_expand_skewport =
tiling->ComputeSkewport(1.5, gfx::Rect(-500, -500, 1500, 1500));
EXPECT_EQ(-575, big_expand_skewport.x());
EXPECT_EQ(-575, big_expand_skewport.y());
EXPECT_EQ(1650, big_expand_skewport.width());
EXPECT_EQ(1650, big_expand_skewport.height());
EXPECT_TRUE(big_expand_skewport.Contains(gfx::Rect(-500, -500, 1500, 1500)));
}
TEST(PictureLayerTilingTest, ComputeSkewport) {
FakePictureLayerTilingClient client;
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Rect viewport(0, 0, 100, 100);
gfx::Size layer_bounds(200, 200);
client.SetTileSize(gfx::Size(100, 100));
client.set_tree(ACTIVE_TREE);
tiling = TestablePictureLayerTiling::Create(1.0f, layer_bounds, &client);
tiling->UpdateTilePriorities(
ACTIVE_TREE, viewport, 1.f, 1.0, NULL, NULL, gfx::Transform());
// Move viewport down 50 pixels in 0.5 seconds.
gfx::Rect down_skewport =
tiling->ComputeSkewport(1.5, gfx::Rect(0, 50, 100, 100));
EXPECT_EQ(0, down_skewport.x());
EXPECT_EQ(50, down_skewport.y());
EXPECT_EQ(100, down_skewport.width());
EXPECT_EQ(200, down_skewport.height());
// Shrink viewport.
gfx::Rect shrink_skewport =
tiling->ComputeSkewport(1.5, gfx::Rect(25, 25, 50, 50));
EXPECT_EQ(25, shrink_skewport.x());
EXPECT_EQ(25, shrink_skewport.y());
EXPECT_EQ(50, shrink_skewport.width());
EXPECT_EQ(50, shrink_skewport.height());
// Move viewport down 50 and right 10 pixels.
gfx::Rect down_right_skewport =
tiling->ComputeSkewport(1.5, gfx::Rect(10, 50, 100, 100));
EXPECT_EQ(10, down_right_skewport.x());
EXPECT_EQ(50, down_right_skewport.y());
EXPECT_EQ(120, down_right_skewport.width());
EXPECT_EQ(200, down_right_skewport.height());
// Move viewport left.
gfx::Rect left_skewport =
tiling->ComputeSkewport(1.5, gfx::Rect(-20, 0, 100, 100));
EXPECT_EQ(-60, left_skewport.x());
EXPECT_EQ(0, left_skewport.y());
EXPECT_EQ(140, left_skewport.width());
EXPECT_EQ(100, left_skewport.height());
// Expand viewport in 0.2 seconds.
gfx::Rect expanded_skewport =
tiling->ComputeSkewport(1.2, gfx::Rect(-5, -5, 110, 110));
EXPECT_EQ(-30, expanded_skewport.x());
EXPECT_EQ(-30, expanded_skewport.y());
EXPECT_EQ(160, expanded_skewport.width());
EXPECT_EQ(160, expanded_skewport.height());
}
TEST(PictureLayerTilingTest, ViewportDistanceWithScale) {
FakePictureLayerTilingClient client;
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Rect viewport(0, 0, 100, 100);
gfx::Size layer_bounds(1500, 1500);
client.SetTileSize(gfx::Size(10, 10));
client.set_tree(ACTIVE_TREE);
// Tiling at 0.25 scale: this should create 47x47 tiles of size 10x10.
// The reason is that each tile has a one pixel border, so tile at (1, 2)
// for instance begins at (8, 16) pixels. So tile at (46, 46) will begin at
// (368, 368) and extend to the end of 1500 * 0.25 = 375 edge of the
// tiling.
tiling = TestablePictureLayerTiling::Create(0.25f, layer_bounds, &client);
gfx::Rect viewport_in_content_space =
gfx::ToEnclosedRect(gfx::ScaleRect(viewport, 0.25f));
tiling->UpdateTilePriorities(
ACTIVE_TREE, viewport, 1.f, 1.0, NULL, NULL, gfx::Transform());
gfx::Rect soon_rect = viewport;
soon_rect.Inset(-312.f, -312.f, -312.f, -312.f);
gfx::Rect soon_rect_in_content_space =
gfx::ToEnclosedRect(gfx::ScaleRect(soon_rect, 0.25f));
// Sanity checks.
for (int i = 0; i < 47; ++i) {
for (int j = 0; j < 47; ++j) {
EXPECT_TRUE(tiling->TileAt(i, j)) << "i: " << i << " j: " << j;
}
}
for (int i = 0; i < 47; ++i) {
EXPECT_FALSE(tiling->TileAt(i, 47)) << "i: " << i;
EXPECT_FALSE(tiling->TileAt(47, i)) << "i: " << i;
}
// No movement in the viewport implies that tiles will either be NOW
// or EVENTUALLY, with the exception of tiles that are between 0 and 312
// pixels away from the viewport, which will be in the SOON bin.
bool have_now = false;
bool have_eventually = false;
bool have_soon = false;
for (int i = 0; i < 47; ++i) {
for (int j = 0; j < 47; ++j) {
Tile* tile = tiling->TileAt(i, j);
TilePriority priority = tile->priority(ACTIVE_TREE);
if (viewport_in_content_space.Intersects(tile->content_rect())) {
EXPECT_EQ(TilePriority::NOW, priority.priority_bin);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
have_now = true;
} else if (soon_rect_in_content_space.Intersects(tile->content_rect())) {
EXPECT_EQ(TilePriority::SOON, priority.priority_bin);
have_soon = true;
} else {
EXPECT_EQ(TilePriority::EVENTUALLY, priority.priority_bin);
EXPECT_GT(priority.distance_to_visible, 0.f);
have_eventually = true;
}
}
}
EXPECT_TRUE(have_now);
EXPECT_TRUE(have_soon);
EXPECT_TRUE(have_eventually);
// Spot check some distances.
// Tile at 5, 1 should begin at 41x9 in content space (without borders),
// so the distance to a viewport that ends at 25x25 in content space
// should be 17 (41 - 25 + 1). In layer space, then that should be
// 17 / 0.25 = 68 pixels.
// We can verify that the content rect (with borders) is one pixel off
// 41,9 8x8 on all sides.
EXPECT_EQ(tiling->TileAt(5, 1)->content_rect().ToString(), "40,8 10x10");
TilePriority priority = tiling->TileAt(5, 1)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(68.f, priority.distance_to_visible);
priority = tiling->TileAt(2, 5)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(68.f, priority.distance_to_visible);
priority = tiling->TileAt(3, 4)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(40.f, priority.distance_to_visible);
// Move the viewport down 40 pixels.
viewport = gfx::Rect(0, 40, 100, 100);
viewport_in_content_space =
gfx::ToEnclosedRect(gfx::ScaleRect(viewport, 0.25f));
gfx::Rect skewport = tiling->ComputeSkewport(2.0, viewport_in_content_space);
soon_rect = viewport;
soon_rect.Inset(-312.f, -312.f, -312.f, -312.f);
soon_rect_in_content_space =
gfx::ToEnclosedRect(gfx::ScaleRect(soon_rect, 0.25f));
EXPECT_EQ(0, skewport.x());
EXPECT_EQ(10, skewport.y());
EXPECT_EQ(25, skewport.width());
EXPECT_EQ(35, skewport.height());
tiling->UpdateTilePriorities(
ACTIVE_TREE, viewport, 1.f, 2.0, NULL, NULL, gfx::Transform());
have_now = false;
have_eventually = false;
have_soon = false;
// Viewport moved, so we expect to find some NOW tiles, some SOON tiles and
// some EVENTUALLY tiles.
for (int i = 0; i < 47; ++i) {
for (int j = 0; j < 47; ++j) {
Tile* tile = tiling->TileAt(i, j);
TilePriority priority = tile->priority(ACTIVE_TREE);
if (viewport_in_content_space.Intersects(tile->content_rect())) {
EXPECT_EQ(TilePriority::NOW, priority.priority_bin) << "i: " << i
<< " j: " << j;
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible) << "i: " << i
<< " j: " << j;
have_now = true;
} else if (skewport.Intersects(tile->content_rect()) ||
soon_rect_in_content_space.Intersects(tile->content_rect())) {
EXPECT_EQ(TilePriority::SOON, priority.priority_bin) << "i: " << i
<< " j: " << j;
EXPECT_GT(priority.distance_to_visible, 0.f) << "i: " << i
<< " j: " << j;
have_soon = true;
} else {
EXPECT_EQ(TilePriority::EVENTUALLY, priority.priority_bin)
<< "i: " << i << " j: " << j;
EXPECT_GT(priority.distance_to_visible, 0.f) << "i: " << i
<< " j: " << j;
have_eventually = true;
}
}
}
EXPECT_TRUE(have_now);
EXPECT_TRUE(have_soon);
EXPECT_TRUE(have_eventually);
priority = tiling->TileAt(5, 1)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(68.f, priority.distance_to_visible);
priority = tiling->TileAt(2, 5)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(28.f, priority.distance_to_visible);
priority = tiling->TileAt(3, 4)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
// Change the underlying layer scale.
tiling->UpdateTilePriorities(
ACTIVE_TREE, viewport, 2.0f, 3.0, NULL, NULL, gfx::Transform());
priority = tiling->TileAt(5, 1)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(136.f, priority.distance_to_visible);
priority = tiling->TileAt(2, 5)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(56.f, priority.distance_to_visible);
priority = tiling->TileAt(3, 4)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
// Test additional scales.
tiling = TestablePictureLayerTiling::Create(0.2f, layer_bounds, &client);
tiling->UpdateTilePriorities(
ACTIVE_TREE, viewport, 1.0f, 4.0, NULL, NULL, gfx::Transform());
priority = tiling->TileAt(5, 1)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(110.f, priority.distance_to_visible);
priority = tiling->TileAt(2, 5)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(70.f, priority.distance_to_visible);
priority = tiling->TileAt(3, 4)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(60.f, priority.distance_to_visible);
tiling->UpdateTilePriorities(
ACTIVE_TREE, viewport, 0.5f, 5.0, NULL, NULL, gfx::Transform());
priority = tiling->TileAt(5, 1)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(55.f, priority.distance_to_visible);
priority = tiling->TileAt(2, 5)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(35.f, priority.distance_to_visible);
priority = tiling->TileAt(3, 4)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(30.f, priority.distance_to_visible);
}
TEST(PictureLayerTilingTest, ExpandRectEqual) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(-1000, -1000, 10000, 10000);
int64 target_area = 100 * 200;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(in.ToString(), out.ToString());
}
TEST(PictureLayerTilingTest, ExpandRectSmaller) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(-1000, -1000, 10000, 10000);
int64 target_area = 100 * 100;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(out.bottom() - in.bottom(), in.y() - out.y());
EXPECT_EQ(out.right() - in.right(), in.x() - out.x());
EXPECT_EQ(out.width() - in.width(), out.height() - in.height());
EXPECT_NEAR(100 * 100, out.width() * out.height(), 50);
EXPECT_TRUE(bounds.Contains(out));
}
TEST(PictureLayerTilingTest, ExpandRectUnbounded) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(-1000, -1000, 10000, 10000);
int64 target_area = 200 * 200;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(out.bottom() - in.bottom(), in.y() - out.y());
EXPECT_EQ(out.right() - in.right(), in.x() - out.x());
EXPECT_EQ(out.width() - in.width(), out.height() - in.height());
EXPECT_NEAR(200 * 200, out.width() * out.height(), 100);
EXPECT_TRUE(bounds.Contains(out));
}
TEST(PictureLayerTilingTest, ExpandRectBoundedSmaller) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(50, 60, 40, 30);
int64 target_area = 200 * 200;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(bounds.ToString(), out.ToString());
}
TEST(PictureLayerTilingTest, ExpandRectBoundedEqual) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds = in;
int64 target_area = 200 * 200;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(bounds.ToString(), out.ToString());
}
TEST(PictureLayerTilingTest, ExpandRectBoundedSmallerStretchVertical) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(45, 0, 90, 300);
int64 target_area = 200 * 200;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(bounds.ToString(), out.ToString());
}
TEST(PictureLayerTilingTest, ExpandRectBoundedEqualStretchVertical) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(40, 0, 100, 300);
int64 target_area = 200 * 200;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(bounds.ToString(), out.ToString());
}
TEST(PictureLayerTilingTest, ExpandRectBoundedSmallerStretchHorizontal) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(0, 55, 180, 190);
int64 target_area = 200 * 200;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(bounds.ToString(), out.ToString());
}
TEST(PictureLayerTilingTest, ExpandRectBoundedEqualStretchHorizontal) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(0, 50, 180, 200);
int64 target_area = 200 * 200;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(bounds.ToString(), out.ToString());
}
TEST(PictureLayerTilingTest, ExpandRectBoundedLeft) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(20, -1000, 10000, 10000);
int64 target_area = 200 * 200;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(out.bottom() - in.bottom(), in.y() - out.y());
EXPECT_EQ(out.bottom() - in.bottom(), out.right() - in.right());
EXPECT_LE(out.width() * out.height(), target_area);
EXPECT_GT(out.width() * out.height(),
target_area - out.width() - out.height() * 2);
EXPECT_TRUE(bounds.Contains(out));
}
TEST(PictureLayerTilingTest, ExpandRectBoundedRight) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(-1000, -1000, 1000+120, 10000);
int64 target_area = 200 * 200;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(out.bottom() - in.bottom(), in.y() - out.y());
EXPECT_EQ(out.bottom() - in.bottom(), in.x() - out.x());
EXPECT_LE(out.width() * out.height(), target_area);
EXPECT_GT(out.width() * out.height(),
target_area - out.width() - out.height() * 2);
EXPECT_TRUE(bounds.Contains(out));
}
TEST(PictureLayerTilingTest, ExpandRectBoundedTop) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(-1000, 30, 10000, 10000);
int64 target_area = 200 * 200;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(out.right() - in.right(), in.x() - out.x());
EXPECT_EQ(out.right() - in.right(), out.bottom() - in.bottom());
EXPECT_LE(out.width() * out.height(), target_area);
EXPECT_GT(out.width() * out.height(),
target_area - out.width() * 2 - out.height());
EXPECT_TRUE(bounds.Contains(out));
}
TEST(PictureLayerTilingTest, ExpandRectBoundedBottom) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(-1000, -1000, 10000, 1000 + 220);
int64 target_area = 200 * 200;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(out.right() - in.right(), in.x() - out.x());
EXPECT_EQ(out.right() - in.right(), in.y() - out.y());
EXPECT_LE(out.width() * out.height(), target_area);
EXPECT_GT(out.width() * out.height(),
target_area - out.width() * 2 - out.height());
EXPECT_TRUE(bounds.Contains(out));
}
TEST(PictureLayerTilingTest, ExpandRectSquishedHorizontally) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(0, -4000, 100+40+20, 100000);
int64 target_area = 400 * 400;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(20, out.right() - in.right());
EXPECT_EQ(40, in.x() - out.x());
EXPECT_EQ(out.bottom() - in.bottom(), in.y() - out.y());
EXPECT_LE(out.width() * out.height(), target_area);
EXPECT_GT(out.width() * out.height(),
target_area - out.width() * 2);
EXPECT_TRUE(bounds.Contains(out));
}
TEST(PictureLayerTilingTest, ExpandRectSquishedVertically) {
gfx::Rect in(40, 50, 100, 200);
gfx::Rect bounds(-4000, 0, 100000, 200+50+30);
int64 target_area = 400 * 400;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(30, out.bottom() - in.bottom());
EXPECT_EQ(50, in.y() - out.y());
EXPECT_EQ(out.right() - in.right(), in.x() - out.x());
EXPECT_LE(out.width() * out.height(), target_area);
EXPECT_GT(out.width() * out.height(),
target_area - out.height() * 2);
EXPECT_TRUE(bounds.Contains(out));
}
TEST(PictureLayerTilingTest, ExpandRectOutOfBoundsFarAway) {
gfx::Rect in(400, 500, 100, 200);
gfx::Rect bounds(0, 0, 10, 10);
int64 target_area = 400 * 400;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_TRUE(out.IsEmpty());
}
TEST(PictureLayerTilingTest, ExpandRectOutOfBoundsExpandedFullyCover) {
gfx::Rect in(40, 50, 100, 100);
gfx::Rect bounds(0, 0, 10, 10);
int64 target_area = 400 * 400;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(bounds.ToString(), out.ToString());
}
TEST(PictureLayerTilingTest, ExpandRectOutOfBoundsExpandedPartlyCover) {
gfx::Rect in(600, 600, 100, 100);
gfx::Rect bounds(0, 0, 500, 500);
int64 target_area = 400 * 400;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_EQ(bounds.right(), out.right());
EXPECT_EQ(bounds.bottom(), out.bottom());
EXPECT_LE(out.width() * out.height(), target_area);
EXPECT_GT(out.width() * out.height(),
target_area - out.width() - out.height());
EXPECT_TRUE(bounds.Contains(out));
}
TEST(PictureLayerTilingTest, EmptyStartingRect) {
// If a layer has a non-invertible transform, then the starting rect
// for the layer would be empty.
gfx::Rect in(40, 40, 0, 0);
gfx::Rect bounds(0, 0, 10, 10);
int64 target_area = 400 * 400;
gfx::Rect out = PictureLayerTiling::ExpandRectEquallyToAreaBoundedBy(
in, target_area, bounds, NULL);
EXPECT_TRUE(out.IsEmpty());
}
TEST(PictureLayerTilingTest, TilingRasterTileIteratorStaticViewport) {
FakePictureLayerTilingClient client;
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Rect viewport(50, 50, 100, 100);
gfx::Size layer_bounds(800, 800);
gfx::Rect soon_rect = viewport;
soon_rect.Inset(-312.f, -312.f, -312.f, -312.f);
client.SetTileSize(gfx::Size(30, 30));
client.set_tree(ACTIVE_TREE);
tiling = TestablePictureLayerTiling::Create(1.0f, layer_bounds, &client);
tiling->UpdateTilePriorities(
ACTIVE_TREE, viewport, 1.0f, 1.0, NULL, NULL, gfx::Transform());
PictureLayerTiling::TilingRasterTileIterator empty_iterator;
EXPECT_FALSE(empty_iterator);
std::vector<Tile*> all_tiles = tiling->AllTilesForTesting();
// Sanity check.
EXPECT_EQ(841u, all_tiles.size());
// The explanation of each iteration is as follows:
// 1. First iteration tests that we can get all of the tiles correctly.
// 2. Second iteration ensures that we can get all of the tiles again (first
// iteration didn't change any tiles), as well set all tiles to be ready to
// draw.
// 3. Third iteration ensures that no tiles are returned, since they were all
// marked as ready to draw.
for (int i = 0; i < 3; ++i) {
PictureLayerTiling::TilingRasterTileIterator it(tiling.get(), ACTIVE_TREE);
// There are 3 bins in TilePriority.
bool have_tiles[3] = {};
// On the third iteration, we should get no tiles since everything was
// marked as ready to draw.
if (i == 2) {
EXPECT_FALSE(it);
continue;
}
EXPECT_TRUE(it);
std::set<Tile*> unique_tiles;
unique_tiles.insert(*it);
Tile* last_tile = *it;
have_tiles[last_tile->priority(ACTIVE_TREE).priority_bin] = true;
// On the second iteration, mark everything as ready to draw (solid color).
if (i == 1) {
ManagedTileState::TileVersion& tile_version =
last_tile->GetTileVersionForTesting(
last_tile->DetermineRasterModeForTree(ACTIVE_TREE));
tile_version.SetSolidColorForTesting(SK_ColorRED);
}
++it;
int eventually_bin_order_correct_count = 0;
int eventually_bin_order_incorrect_count = 0;
while (it) {
Tile* new_tile = *it;
++it;
unique_tiles.insert(new_tile);
TilePriority last_priority = last_tile->priority(ACTIVE_TREE);
TilePriority new_priority = new_tile->priority(ACTIVE_TREE);
EXPECT_LE(last_priority.priority_bin, new_priority.priority_bin);
if (last_priority.priority_bin == new_priority.priority_bin) {
if (last_priority.priority_bin == TilePriority::EVENTUALLY) {
bool order_correct = last_priority.distance_to_visible <=
new_priority.distance_to_visible;
eventually_bin_order_correct_count += order_correct;
eventually_bin_order_incorrect_count += !order_correct;
} else if (!soon_rect.Intersects(new_tile->content_rect()) &&
!soon_rect.Intersects(last_tile->content_rect())) {
EXPECT_LE(last_priority.distance_to_visible,
new_priority.distance_to_visible);
EXPECT_EQ(TilePriority::NOW, new_priority.priority_bin);
} else if (new_priority.distance_to_visible > 0.f) {
EXPECT_EQ(TilePriority::SOON, new_priority.priority_bin);
}
}
have_tiles[new_priority.priority_bin] = true;
last_tile = new_tile;
// On the second iteration, mark everything as ready to draw (solid
// color).
if (i == 1) {
ManagedTileState::TileVersion& tile_version =
last_tile->GetTileVersionForTesting(
last_tile->DetermineRasterModeForTree(ACTIVE_TREE));
tile_version.SetSolidColorForTesting(SK_ColorRED);
}
}
EXPECT_GT(eventually_bin_order_correct_count,
eventually_bin_order_incorrect_count);
// We should have now and eventually tiles, as well as soon tiles from
// the border region.
EXPECT_TRUE(have_tiles[TilePriority::NOW]);
EXPECT_TRUE(have_tiles[TilePriority::SOON]);
EXPECT_TRUE(have_tiles[TilePriority::EVENTUALLY]);
EXPECT_EQ(unique_tiles.size(), all_tiles.size());
}
}
TEST(PictureLayerTilingTest, TilingRasterTileIteratorMovingViewport) {
FakePictureLayerTilingClient client;
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Rect viewport(50, 0, 100, 100);
gfx::Rect moved_viewport(50, 0, 100, 500);
gfx::Size layer_bounds(1000, 1000);
client.SetTileSize(gfx::Size(30, 30));
client.set_tree(ACTIVE_TREE);
tiling = TestablePictureLayerTiling::Create(1.f, layer_bounds, &client);
tiling->UpdateTilePriorities(
ACTIVE_TREE, viewport, 1.0f, 1.0, NULL, NULL, gfx::Transform());
tiling->UpdateTilePriorities(
ACTIVE_TREE, moved_viewport, 1.0f, 2.0, NULL, NULL, gfx::Transform());
gfx::Rect soon_rect = moved_viewport;
soon_rect.Inset(-312.f, -312.f, -312.f, -312.f);
// There are 3 bins in TilePriority.
bool have_tiles[3] = {};
Tile* last_tile = NULL;
int eventually_bin_order_correct_count = 0;
int eventually_bin_order_incorrect_count = 0;
for (PictureLayerTiling::TilingRasterTileIterator it(tiling.get(),
ACTIVE_TREE);
it;
++it) {
if (!last_tile)
last_tile = *it;
Tile* new_tile = *it;
TilePriority last_priority = last_tile->priority(ACTIVE_TREE);
TilePriority new_priority = new_tile->priority(ACTIVE_TREE);
have_tiles[new_priority.priority_bin] = true;
EXPECT_LE(last_priority.priority_bin, new_priority.priority_bin);
if (last_priority.priority_bin == new_priority.priority_bin) {
if (last_priority.priority_bin == TilePriority::EVENTUALLY) {
bool order_correct = last_priority.distance_to_visible <=
new_priority.distance_to_visible;
eventually_bin_order_correct_count += order_correct;
eventually_bin_order_incorrect_count += !order_correct;
} else if (!soon_rect.Intersects(new_tile->content_rect()) &&
!soon_rect.Intersects(last_tile->content_rect())) {
EXPECT_LE(last_priority.distance_to_visible,
new_priority.distance_to_visible);
} else if (new_priority.distance_to_visible > 0.f) {
EXPECT_EQ(TilePriority::SOON, new_priority.priority_bin);
}
}
last_tile = new_tile;
}
EXPECT_GT(eventually_bin_order_correct_count,
eventually_bin_order_incorrect_count);
EXPECT_TRUE(have_tiles[TilePriority::NOW]);
EXPECT_TRUE(have_tiles[TilePriority::SOON]);
EXPECT_TRUE(have_tiles[TilePriority::EVENTUALLY]);
}
static void TileExists(bool exists, Tile* tile,
const gfx::Rect& geometry_rect) {
EXPECT_EQ(exists, tile != NULL) << geometry_rect.ToString();
}
TEST(PictureLayerTilingTest, TilingEvictionTileIteratorStaticViewport) {
FakeOutputSurfaceClient output_surface_client;
scoped_ptr<FakeOutputSurface> output_surface = FakeOutputSurface::Create3d();
CHECK(output_surface->BindToClient(&output_surface_client));
TestSharedBitmapManager shared_bitmap_manager;
scoped_ptr<ResourceProvider> resource_provider = ResourceProvider::Create(
output_surface.get(), &shared_bitmap_manager, 0, false, 1, false);
FakePictureLayerTilingClient client(resource_provider.get());
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Rect viewport(50, 50, 100, 100);
gfx::Size layer_bounds(2000, 2000);
client.SetTileSize(gfx::Size(30, 30));
client.set_tree(ACTIVE_TREE);
tiling = TestablePictureLayerTiling::Create(1.0f, layer_bounds, &client);
tiling->UpdateTilePriorities(
ACTIVE_TREE, viewport, 1.0f, 1.0, NULL, NULL, gfx::Transform());
PictureLayerTiling::TilingRasterTileIterator empty_iterator;
EXPECT_FALSE(empty_iterator);
std::vector<Tile*> all_tiles = tiling->AllTilesForTesting();
PictureLayerTiling::TilingEvictionTileIterator it(
tiling.get(), SMOOTHNESS_TAKES_PRIORITY, PictureLayerTiling::NOW);
// Tiles don't have resources to evict.
EXPECT_FALSE(it);
// Sanity check.
EXPECT_EQ(5184u, all_tiles.size());
client.tile_manager()->InitializeTilesWithResourcesForTesting(all_tiles);
std::set<Tile*> all_tiles_set(all_tiles.begin(), all_tiles.end());
std::set<Tile*> eviction_tiles;
it = PictureLayerTiling::TilingEvictionTileIterator(
tiling.get(), SMOOTHNESS_TAKES_PRIORITY, PictureLayerTiling::EVENTUALLY);
EXPECT_TRUE(it);
for (; it; ++it) {
Tile* tile = *it;
EXPECT_TRUE(tile);
EXPECT_EQ(TilePriority::EVENTUALLY,
tile->priority(ACTIVE_TREE).priority_bin);
EXPECT_FALSE(tile->required_for_activation());
eviction_tiles.insert(tile);
}
it = PictureLayerTiling::TilingEvictionTileIterator(
tiling.get(), SMOOTHNESS_TAKES_PRIORITY, PictureLayerTiling::SOON);
EXPECT_TRUE(it);
for (; it; ++it) {
Tile* tile = *it;
EXPECT_TRUE(tile);
EXPECT_EQ(TilePriority::SOON, tile->priority(ACTIVE_TREE).priority_bin);
EXPECT_FALSE(tile->required_for_activation());
eviction_tiles.insert(tile);
}
it = PictureLayerTiling::TilingEvictionTileIterator(
tiling.get(), SMOOTHNESS_TAKES_PRIORITY, PictureLayerTiling::NOW);
EXPECT_TRUE(it);
for (; it; ++it) {
Tile* tile = *it;
EXPECT_TRUE(tile);
EXPECT_EQ(TilePriority::NOW, tile->priority(ACTIVE_TREE).priority_bin);
EXPECT_FALSE(tile->required_for_activation());
eviction_tiles.insert(tile);
}
it = PictureLayerTiling::TilingEvictionTileIterator(
tiling.get(),
SMOOTHNESS_TAKES_PRIORITY,
PictureLayerTiling::NOW_AND_REQUIRED_FOR_ACTIVATION);
EXPECT_FALSE(it);
EXPECT_GT(all_tiles_set.size(), 0u);
EXPECT_EQ(all_tiles_set, eviction_tiles);
}
TEST_F(PictureLayerTilingIteratorTest, TilesExist) {
gfx::Size layer_bounds(1099, 801);
Initialize(gfx::Size(100, 100), 1.f, layer_bounds);
VerifyTilesExactlyCoverRect(1.f, gfx::Rect(layer_bounds));
VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, false));
client_.set_tree(ACTIVE_TREE);
tiling_->UpdateTilePriorities(
ACTIVE_TREE,
gfx::Rect(layer_bounds), // visible content rect
1.f, // current contents scale
1.0, // current frame time
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, true));
// Make the viewport rect empty. All tiles are killed and become zombies.
tiling_->UpdateTilePriorities(ACTIVE_TREE,
gfx::Rect(), // visible content rect
1.f, // current contents scale
2.0, // current frame time
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, false));
}
TEST_F(PictureLayerTilingIteratorTest, TilesExistGiantViewport) {
gfx::Size layer_bounds(1099, 801);
Initialize(gfx::Size(100, 100), 1.f, layer_bounds);
VerifyTilesExactlyCoverRect(1.f, gfx::Rect(layer_bounds));
VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, false));
gfx::Rect giant_rect(-10000000, -10000000, 1000000000, 1000000000);
client_.set_tree(ACTIVE_TREE);
tiling_->UpdateTilePriorities(
ACTIVE_TREE,
gfx::Rect(layer_bounds), // visible content rect
1.f, // current contents scale
1.0, // current frame time
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, true));
// If the visible content rect is empty, it should still have live tiles.
tiling_->UpdateTilePriorities(ACTIVE_TREE,
giant_rect, // visible content rect
1.f, // current contents scale
2.0, // current frame time
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, true));
}
TEST_F(PictureLayerTilingIteratorTest, TilesExistOutsideViewport) {
gfx::Size layer_bounds(1099, 801);
Initialize(gfx::Size(100, 100), 1.f, layer_bounds);
VerifyTilesExactlyCoverRect(1.f, gfx::Rect(layer_bounds));
VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, false));
// This rect does not intersect with the layer, as the layer is outside the
// viewport.
gfx::Rect viewport_rect(1100, 0, 1000, 1000);
EXPECT_FALSE(viewport_rect.Intersects(gfx::Rect(layer_bounds)));
client_.set_tree(ACTIVE_TREE);
tiling_->UpdateTilePriorities(ACTIVE_TREE,
viewport_rect, // visible content rect
1.f, // current contents scale
1.0, // current frame time
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, true));
}
static void TilesIntersectingRectExist(const gfx::Rect& rect,
bool intersect_exists,
Tile* tile,
const gfx::Rect& geometry_rect) {
bool intersects = rect.Intersects(geometry_rect);
bool expected_exists = intersect_exists ? intersects : !intersects;
EXPECT_EQ(expected_exists, tile != NULL)
<< "Rects intersecting " << rect.ToString() << " should exist. "
<< "Current tile rect is " << geometry_rect.ToString();
}
TEST_F(PictureLayerTilingIteratorTest,
TilesExistLargeViewportAndLayerWithSmallVisibleArea) {
gfx::Size layer_bounds(10000, 10000);
Initialize(gfx::Size(100, 100), 1.f, layer_bounds);
VerifyTilesExactlyCoverRect(1.f, gfx::Rect(layer_bounds));
VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, false));
gfx::Rect visible_rect(8000, 8000, 50, 50);
client_.set_tree(ACTIVE_TREE);
set_max_tiles_for_interest_area(1);
tiling_->UpdateTilePriorities(ACTIVE_TREE,
visible_rect, // visible content rect
1.f, // current contents scale
1.0, // current frame time
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
VerifyTiles(1.f,
gfx::Rect(layer_bounds),
base::Bind(&TilesIntersectingRectExist, visible_rect, true));
}
static void CountExistingTiles(int *count,
Tile* tile,
const gfx::Rect& geometry_rect) {
if (tile != NULL)
++(*count);
}
TEST_F(PictureLayerTilingIteratorTest,
TilesExistLargeViewportAndLayerWithLargeVisibleArea) {
gfx::Size layer_bounds(10000, 10000);
Initialize(gfx::Size(100, 100), 1.f, layer_bounds);
VerifyTilesExactlyCoverRect(1.f, gfx::Rect(layer_bounds));
VerifyTiles(1.f, gfx::Rect(layer_bounds), base::Bind(&TileExists, false));
client_.set_tree(ACTIVE_TREE);
set_max_tiles_for_interest_area(1);
tiling_->UpdateTilePriorities(
ACTIVE_TREE,
gfx::Rect(layer_bounds), // visible content rect
1.f, // current contents scale
1.0, // current frame time
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
int num_tiles = 0;
VerifyTiles(1.f,
gfx::Rect(layer_bounds),
base::Bind(&CountExistingTiles, &num_tiles));
// If we're making a rect the size of one tile, it can only overlap up to 4
// tiles depending on its position.
EXPECT_LE(num_tiles, 4);
VerifyTiles(1.f, gfx::Rect(), base::Bind(&TileExists, false));
}
TEST_F(PictureLayerTilingIteratorTest, AddTilingsToMatchScale) {
gfx::Size layer_bounds(1099, 801);
gfx::Size tile_size(100, 100);
client_.SetTileSize(tile_size);
client_.set_tree(PENDING_TREE);
PictureLayerTilingSet active_set(&client_, layer_bounds);
active_set.AddTiling(1.f);
VerifyTiles(active_set.tiling_at(0),
1.f,
gfx::Rect(layer_bounds),
base::Bind(&TileExists, false));
UpdateAllTilePriorities(&active_set,
PENDING_TREE,
gfx::Rect(layer_bounds), // visible content rect
1.f, // current contents scale
1.0); // current frame time
// The active tiling has tiles now.
VerifyTiles(active_set.tiling_at(0),
1.f,
gfx::Rect(layer_bounds),
base::Bind(&TileExists, true));
// Add the same tilings to the pending set.
PictureLayerTilingSet pending_set(&client_, layer_bounds);
Region invalidation;
pending_set.SyncTilings(active_set, layer_bounds, invalidation, 0.f);
// The pending tiling starts with no tiles.
VerifyTiles(pending_set.tiling_at(0),
1.f,
gfx::Rect(layer_bounds),
base::Bind(&TileExists, false));
// UpdateTilePriorities on the pending tiling at the same frame time. The
// pending tiling should get tiles.
UpdateAllTilePriorities(&pending_set,
PENDING_TREE,
gfx::Rect(layer_bounds), // visible content rect
1.f, // current contents scale
1.0); // current frame time
VerifyTiles(pending_set.tiling_at(0),
1.f,
gfx::Rect(layer_bounds),
base::Bind(&TileExists, true));
}
TEST(UpdateTilePrioritiesTest, VisibleTiles) {
// The TilePriority of visible tiles should have zero distance_to_visible
// and time_to_visible.
FakePictureLayerTilingClient client;
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Size device_viewport(800, 600);
gfx::Size last_layer_bounds(200, 200);
gfx::Size current_layer_bounds(200, 200);
float current_layer_contents_scale = 1.f;
gfx::Transform current_screen_transform;
double current_frame_time_in_seconds = 1.0;
gfx::Rect viewport_in_layer_space = ViewportInLayerSpace(
current_screen_transform, device_viewport);
client.SetTileSize(gfx::Size(100, 100));
client.set_tree(ACTIVE_TREE);
tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale
current_layer_bounds,
&client);
tiling->UpdateTilePriorities(ACTIVE_TREE,
viewport_in_layer_space,
current_layer_contents_scale,
current_frame_time_in_seconds,
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
ASSERT_TRUE(tiling->TileAt(0, 0));
ASSERT_TRUE(tiling->TileAt(0, 1));
ASSERT_TRUE(tiling->TileAt(1, 0));
ASSERT_TRUE(tiling->TileAt(1, 1));
TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
EXPECT_FLOAT_EQ(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
EXPECT_FLOAT_EQ(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
EXPECT_FLOAT_EQ(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
EXPECT_FLOAT_EQ(TilePriority::NOW, priority.priority_bin);
}
TEST(UpdateTilePrioritiesTest, OffscreenTiles) {
// The TilePriority of offscreen tiles (without movement) should have nonzero
// distance_to_visible and infinite time_to_visible.
FakePictureLayerTilingClient client;
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Size device_viewport(800, 600);
gfx::Size last_layer_bounds(200, 200);
gfx::Size current_layer_bounds(200, 200);
float current_layer_contents_scale = 1.f;
gfx::Transform last_screen_transform;
gfx::Transform current_screen_transform;
double current_frame_time_in_seconds = 1.0;
current_screen_transform.Translate(850, 0);
last_screen_transform = current_screen_transform;
gfx::Rect viewport_in_layer_space = ViewportInLayerSpace(
current_screen_transform, device_viewport);
client.SetTileSize(gfx::Size(100, 100));
client.set_tree(ACTIVE_TREE);
tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale
current_layer_bounds,
&client);
tiling->UpdateTilePriorities(ACTIVE_TREE,
viewport_in_layer_space,
current_layer_contents_scale,
current_frame_time_in_seconds,
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
ASSERT_TRUE(tiling->TileAt(0, 0));
ASSERT_TRUE(tiling->TileAt(0, 1));
ASSERT_TRUE(tiling->TileAt(1, 0));
ASSERT_TRUE(tiling->TileAt(1, 1));
TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
// Furthermore, in this scenario tiles on the right hand side should have a
// larger distance to visible.
TilePriority left = tiling->TileAt(0, 0)->priority(ACTIVE_TREE);
TilePriority right = tiling->TileAt(1, 0)->priority(ACTIVE_TREE);
EXPECT_GT(right.distance_to_visible, left.distance_to_visible);
left = tiling->TileAt(0, 1)->priority(ACTIVE_TREE);
right = tiling->TileAt(1, 1)->priority(ACTIVE_TREE);
EXPECT_GT(right.distance_to_visible, left.distance_to_visible);
}
TEST(UpdateTilePrioritiesTest, PartiallyOffscreenLayer) {
// Sanity check that a layer with some tiles visible and others offscreen has
// correct TilePriorities for each tile.
FakePictureLayerTilingClient client;
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Size device_viewport(800, 600);
gfx::Size last_layer_bounds(200, 200);
gfx::Size current_layer_bounds(200, 200);
float current_layer_contents_scale = 1.f;
gfx::Transform last_screen_transform;
gfx::Transform current_screen_transform;
double current_frame_time_in_seconds = 1.0;
current_screen_transform.Translate(705, 505);
last_screen_transform = current_screen_transform;
gfx::Rect viewport_in_layer_space = ViewportInLayerSpace(
current_screen_transform, device_viewport);
client.SetTileSize(gfx::Size(100, 100));
client.set_tree(ACTIVE_TREE);
tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale
current_layer_bounds,
&client);
tiling->UpdateTilePriorities(ACTIVE_TREE,
viewport_in_layer_space,
current_layer_contents_scale,
current_frame_time_in_seconds,
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
ASSERT_TRUE(tiling->TileAt(0, 0));
ASSERT_TRUE(tiling->TileAt(0, 1));
ASSERT_TRUE(tiling->TileAt(1, 0));
ASSERT_TRUE(tiling->TileAt(1, 1));
TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
EXPECT_FLOAT_EQ(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
}
TEST(UpdateTilePrioritiesTest, PartiallyOffscreenRotatedLayer) {
// Each tile of a layer may be affected differently by a transform; Check
// that UpdateTilePriorities correctly accounts for the transform between
// layer space and screen space.
FakePictureLayerTilingClient client;
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Size device_viewport(800, 600);
gfx::Size last_layer_bounds(200, 200);
gfx::Size current_layer_bounds(200, 200);
float current_layer_contents_scale = 1.f;
gfx::Transform last_screen_transform;
gfx::Transform current_screen_transform;
double current_frame_time_in_seconds = 1.0;
// A diagonally rotated layer that is partially off the bottom of the screen.
// In this configuration, only the top-left tile would be visible.
current_screen_transform.Translate(600, 750);
current_screen_transform.RotateAboutZAxis(45);
last_screen_transform = current_screen_transform;
gfx::Rect viewport_in_layer_space = ViewportInLayerSpace(
current_screen_transform, device_viewport);
client.SetTileSize(gfx::Size(100, 100));
client.set_tree(ACTIVE_TREE);
tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale
current_layer_bounds,
&client);
tiling->UpdateTilePriorities(ACTIVE_TREE,
viewport_in_layer_space,
current_layer_contents_scale,
current_frame_time_in_seconds,
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
ASSERT_TRUE(tiling->TileAt(0, 0));
ASSERT_TRUE(tiling->TileAt(0, 1));
ASSERT_TRUE(tiling->TileAt(1, 0));
ASSERT_TRUE(tiling->TileAt(1, 1));
TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
EXPECT_EQ(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
EXPECT_EQ(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
// Furthermore, in this scenario the bottom-right tile should have the larger
// distance to visible.
TilePriority top_left = tiling->TileAt(0, 0)->priority(ACTIVE_TREE);
TilePriority top_right = tiling->TileAt(1, 0)->priority(ACTIVE_TREE);
TilePriority bottom_right = tiling->TileAt(1, 1)->priority(ACTIVE_TREE);
EXPECT_GT(top_right.distance_to_visible, top_left.distance_to_visible);
EXPECT_EQ(bottom_right.distance_to_visible, top_right.distance_to_visible);
}
TEST(UpdateTilePrioritiesTest, PerspectiveLayer) {
// Perspective transforms need to take a different code path.
// This test checks tile priorities of a perspective layer.
FakePictureLayerTilingClient client;
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Size device_viewport(800, 600);
gfx::Rect visible_layer_rect(0, 0, 0, 0); // offscreen.
gfx::Size last_layer_bounds(200, 200);
gfx::Size current_layer_bounds(200, 200);
float current_layer_contents_scale = 1.f;
gfx::Transform last_screen_transform;
gfx::Transform current_screen_transform;
double current_frame_time_in_seconds = 1.0;
// A 3d perspective layer rotated about its Y axis, translated to almost
// fully offscreen. The left side will appear closer (i.e. larger in 2d) than
// the right side, so the top-left tile will technically be closer than the
// top-right.
// Translate layer to offscreen
current_screen_transform.Translate(400.0, 630.0);
// Apply perspective about the center of the layer
current_screen_transform.Translate(100.0, 100.0);
current_screen_transform.ApplyPerspectiveDepth(100.0);
current_screen_transform.RotateAboutYAxis(10.0);
current_screen_transform.Translate(-100.0, -100.0);
last_screen_transform = current_screen_transform;
// Sanity check that this transform wouldn't cause w<0 clipping.
bool clipped;
MathUtil::MapQuad(current_screen_transform,
gfx::QuadF(gfx::RectF(0, 0, 200, 200)),
&clipped);
ASSERT_FALSE(clipped);
gfx::Rect viewport_in_layer_space = ViewportInLayerSpace(
current_screen_transform, device_viewport);
client.SetTileSize(gfx::Size(100, 100));
client.set_tree(ACTIVE_TREE);
tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale
current_layer_bounds,
&client);
tiling->UpdateTilePriorities(ACTIVE_TREE,
viewport_in_layer_space,
current_layer_contents_scale,
current_frame_time_in_seconds,
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
ASSERT_TRUE(tiling->TileAt(0, 0));
ASSERT_TRUE(tiling->TileAt(0, 1));
ASSERT_TRUE(tiling->TileAt(1, 0));
ASSERT_TRUE(tiling->TileAt(1, 1));
// All tiles will have a positive distance_to_visible
// and an infinite time_to_visible.
TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(priority.distance_to_visible, 0.f);
EXPECT_EQ(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(priority.distance_to_visible, 0.f);
EXPECT_EQ(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
// Furthermore, in this scenario the top-left distance_to_visible
// will be smallest, followed by top-right. The bottom layers
// will of course be further than the top layers.
TilePriority top_left = tiling->TileAt(0, 0)->priority(ACTIVE_TREE);
TilePriority top_right = tiling->TileAt(1, 0)->priority(ACTIVE_TREE);
TilePriority bottom_left = tiling->TileAt(0, 1)->priority(ACTIVE_TREE);
TilePriority bottom_right = tiling->TileAt(1, 1)->priority(ACTIVE_TREE);
EXPECT_GT(bottom_right.distance_to_visible, top_right.distance_to_visible);
EXPECT_GT(bottom_left.distance_to_visible, top_left.distance_to_visible);
}
TEST(UpdateTilePrioritiesTest, PerspectiveLayerClippedByW) {
// Perspective transforms need to take a different code path.
// This test checks tile priorities of a perspective layer.
FakePictureLayerTilingClient client;
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Size device_viewport(800, 600);
gfx::Size last_layer_bounds(200, 200);
gfx::Size current_layer_bounds(200, 200);
float current_layer_contents_scale = 1.f;
gfx::Transform last_screen_transform;
gfx::Transform current_screen_transform;
double current_frame_time_in_seconds = 1.0;
// A 3d perspective layer rotated about its Y axis, translated to almost
// fully offscreen. The left side will appear closer (i.e. larger in 2d) than
// the right side, so the top-left tile will technically be closer than the
// top-right.
// Translate layer to offscreen
current_screen_transform.Translate(400.0, 970.0);
// Apply perspective and rotation about the center of the layer
current_screen_transform.Translate(100.0, 100.0);
current_screen_transform.ApplyPerspectiveDepth(10.0);
current_screen_transform.RotateAboutYAxis(10.0);
current_screen_transform.Translate(-100.0, -100.0);
last_screen_transform = current_screen_transform;
// Sanity check that this transform does cause w<0 clipping for the left side
// of the layer, but not the right side.
bool clipped;
MathUtil::MapQuad(current_screen_transform,
gfx::QuadF(gfx::RectF(0, 0, 100, 200)),
&clipped);
ASSERT_TRUE(clipped);
MathUtil::MapQuad(current_screen_transform,
gfx::QuadF(gfx::RectF(100, 0, 100, 200)),
&clipped);
ASSERT_FALSE(clipped);
gfx::Rect viewport_in_layer_space = ViewportInLayerSpace(
current_screen_transform, device_viewport);
client.SetTileSize(gfx::Size(100, 100));
client.set_tree(ACTIVE_TREE);
tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale
current_layer_bounds,
&client);
tiling->UpdateTilePriorities(ACTIVE_TREE,
viewport_in_layer_space,
current_layer_contents_scale,
current_frame_time_in_seconds,
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
ASSERT_TRUE(tiling->TileAt(0, 0));
ASSERT_TRUE(tiling->TileAt(0, 1));
ASSERT_TRUE(tiling->TileAt(1, 0));
ASSERT_TRUE(tiling->TileAt(1, 1));
// Left-side tiles will be clipped by the transform, so we have to assume
// they are visible just in case.
TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
EXPECT_FLOAT_EQ(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
// Right-side tiles will have a positive distance_to_visible
// and an infinite time_to_visible.
priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(priority.distance_to_visible, 0.f);
EXPECT_EQ(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
}
TEST(UpdateTilePrioritiesTest, BasicMotion) {
// Test that time_to_visible is computed correctly when
// there is some motion.
FakePictureLayerTilingClient client;
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Size device_viewport(800, 600);
gfx::Rect visible_layer_rect(0, 0, 0, 0);
gfx::Size last_layer_bounds(200, 200);
gfx::Size current_layer_bounds(200, 200);
float last_layer_contents_scale = 1.f;
float current_layer_contents_scale = 1.f;
gfx::Transform last_screen_transform;
gfx::Transform current_screen_transform;
double last_frame_time_in_seconds = 1.0;
double current_frame_time_in_seconds = 2.0;
// Offscreen layer is coming closer to viewport at 1000 pixels per second.
current_screen_transform.Translate(1800, 0);
last_screen_transform.Translate(2800, 0);
gfx::Rect viewport_in_layer_space = ViewportInLayerSpace(
current_screen_transform, device_viewport);
client.SetTileSize(gfx::Size(100, 100));
client.set_tree(ACTIVE_TREE);
tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale
current_layer_bounds,
&client);
// previous ("last") frame
tiling->UpdateTilePriorities(ACTIVE_TREE,
viewport_in_layer_space,
last_layer_contents_scale,
last_frame_time_in_seconds,
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
// current frame
tiling->UpdateTilePriorities(ACTIVE_TREE,
viewport_in_layer_space,
current_layer_contents_scale,
current_frame_time_in_seconds,
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
ASSERT_TRUE(tiling->TileAt(0, 0));
ASSERT_TRUE(tiling->TileAt(0, 1));
ASSERT_TRUE(tiling->TileAt(1, 0));
ASSERT_TRUE(tiling->TileAt(1, 1));
TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
// time_to_visible for the right hand side layers needs an extra 0.099
// seconds because this tile is 99 pixels further away.
priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(1, 1)->priority(ACTIVE_TREE);
EXPECT_GT(priority.distance_to_visible, 0.f);
EXPECT_NE(TilePriority::NOW, priority.priority_bin);
}
TEST(UpdateTilePrioritiesTest, RotationMotion) {
// Each tile of a layer may be affected differently by a transform; Check
// that UpdateTilePriorities correctly accounts for the transform between
// layer space and screen space.
FakePictureLayerTilingClient client;
scoped_ptr<TestablePictureLayerTiling> tiling;
gfx::Size device_viewport(800, 600);
gfx::Rect visible_layer_rect(0, 0, 0, 0); // offscren.
gfx::Size last_layer_bounds(200, 200);
gfx::Size current_layer_bounds(200, 200);
float last_layer_contents_scale = 1.f;
float current_layer_contents_scale = 1.f;
gfx::Transform last_screen_transform;
gfx::Transform current_screen_transform;
double last_frame_time_in_seconds = 1.0;
double current_frame_time_in_seconds = 2.0;
// Rotation motion is set up specifically so that:
// - rotation occurs about the center of the layer
// - the top-left tile becomes visible on rotation
// - the top-right tile will have an infinite time_to_visible
// because it is rotating away from viewport.
// - bottom-left layer will have a positive non-zero time_to_visible
// because it is rotating toward the viewport.
current_screen_transform.Translate(400, 550);
current_screen_transform.RotateAboutZAxis(45);
last_screen_transform.Translate(400, 550);
gfx::Rect viewport_in_layer_space = ViewportInLayerSpace(
current_screen_transform, device_viewport);
client.SetTileSize(gfx::Size(100, 100));
client.set_tree(ACTIVE_TREE);
tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale
current_layer_bounds,
&client);
// previous ("last") frame
tiling->UpdateTilePriorities(ACTIVE_TREE,
viewport_in_layer_space,
last_layer_contents_scale,
last_frame_time_in_seconds,
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
// current frame
tiling->UpdateTilePriorities(ACTIVE_TREE,
viewport_in_layer_space,
current_layer_contents_scale,
current_frame_time_in_seconds,
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
ASSERT_TRUE(tiling->TileAt(0, 0));
ASSERT_TRUE(tiling->TileAt(0, 1));
ASSERT_TRUE(tiling->TileAt(1, 0));
ASSERT_TRUE(tiling->TileAt(1, 1));
TilePriority priority = tiling->TileAt(0, 0)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
EXPECT_EQ(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(0, 1)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
EXPECT_EQ(TilePriority::NOW, priority.priority_bin);
priority = tiling->TileAt(1, 0)->priority(ACTIVE_TREE);
EXPECT_FLOAT_EQ(0.f, priority.distance_to_visible);
EXPECT_EQ(TilePriority::NOW, priority.priority_bin);
}
TEST(PictureLayerTilingTest, ResetClearsPriorities) {
FakePictureLayerTilingClient client;
scoped_ptr<TestablePictureLayerTiling> tiling;
client.SetTileSize(gfx::Size(100, 100));
client.set_tree(ACTIVE_TREE);
tiling = TestablePictureLayerTiling::Create(1.0f, // contents_scale
gfx::Size(100, 100),
&client);
tiling->UpdateTilePriorities(ACTIVE_TREE,
gfx::Rect(0, 0, 100, 100),
1.0f,
1.0f,
NULL, // occlusion tracker
NULL, // render target
gfx::Transform()); // draw transform
std::vector<scoped_refptr<Tile> > tiles = tiling->AllRefTilesForTesting();
ASSERT_GT(tiles.size(), 0u);
for (std::vector<scoped_refptr<Tile> >::const_iterator it = tiles.begin();
it != tiles.end();
++it) {
EXPECT_NE(TilePriority(), (*it)->priority(ACTIVE_TREE));
}
tiling->Reset();
for (std::vector<scoped_refptr<Tile> >::const_iterator it = tiles.begin();
it != tiles.end();
++it) {
EXPECT_EQ(TilePriority(), (*it)->priority(ACTIVE_TREE));
}
tiles.clear();
}
} // namespace
} // namespace cc