blob: e9c0db8a9a714765364265e13e5190f6da06677e [file] [log] [blame]
// Copyright 2013 The Flutter 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 "flutter/flow/layers/opacity_layer.h"
#include "flutter/flow/layers/clip_rect_layer.h"
#include "flutter/flow/layers/image_filter_layer.h"
#include "flutter/flow/layers/layer_tree.h"
#include "flutter/flow/layers/platform_view_layer.h"
#include "flutter/flow/layers/transform_layer.h"
#include "flutter/flow/raster_cache_util.h"
#include "flutter/flow/testing/diff_context_test.h"
#include "flutter/flow/testing/layer_test.h"
#include "flutter/flow/testing/mock_embedder.h"
#include "flutter/flow/testing/mock_layer.h"
#include "flutter/fml/macros.h"
#include "flutter/testing/display_list_testing.h"
#include "gtest/gtest.h"
// TODO(zanderso): https://github.com/flutter/flutter/issues/127701
// NOLINTBEGIN(bugprone-unchecked-optional-access)
namespace flutter {
namespace testing {
using OpacityLayerTest = LayerTest;
#ifndef NDEBUG
TEST_F(OpacityLayerTest, PaintingEmptyLayerDies) {
auto mock_layer = std::make_shared<MockLayer>(SkPath());
auto layer =
std::make_shared<OpacityLayer>(SK_AlphaOPAQUE, SkPoint::Make(0.0f, 0.0f));
layer->Add(mock_layer);
layer->Preroll(preroll_context());
EXPECT_EQ(mock_layer->paint_bounds(), SkPath().getBounds());
EXPECT_EQ(layer->paint_bounds(), mock_layer->paint_bounds());
EXPECT_EQ(layer->child_paint_bounds(), mock_layer->paint_bounds());
EXPECT_FALSE(mock_layer->needs_painting(paint_context()));
EXPECT_FALSE(layer->needs_painting(paint_context()));
EXPECT_DEATH_IF_SUPPORTED(layer->Paint(paint_context()),
"needs_painting\\(context\\)");
}
TEST_F(OpacityLayerTest, PaintBeforePrerollDies) {
SkPath child_path;
child_path.addRect(5.0f, 6.0f, 20.5f, 21.5f);
auto mock_layer = std::make_shared<MockLayer>(child_path);
auto layer =
std::make_shared<OpacityLayer>(SK_AlphaOPAQUE, SkPoint::Make(0.0f, 0.0f));
layer->Add(mock_layer);
EXPECT_DEATH_IF_SUPPORTED(layer->Paint(paint_context()),
"needs_painting\\(context\\)");
}
#endif
TEST_F(OpacityLayerTest, TranslateChildren) {
SkPath child_path1;
child_path1.addRect(10.0f, 10.0f, 20.0f, 20.f);
DlPaint child_paint1 = DlPaint(DlColor::kMidGrey());
auto layer = std::make_shared<OpacityLayer>(0.5, SkPoint::Make(10, 10));
auto mock_layer1 = std::make_shared<MockLayer>(child_path1, child_paint1);
layer->Add(mock_layer1);
auto initial_transform = SkMatrix::Scale(2.0, 2.0);
preroll_context()->state_stack.set_preroll_delegate(initial_transform);
layer->Preroll(preroll_context());
SkRect layer_bounds = mock_layer1->paint_bounds();
mock_layer1->parent_matrix().mapRect(&layer_bounds);
EXPECT_EQ(layer_bounds, SkRect::MakeXYWH(40, 40, 20, 20));
}
TEST_F(OpacityLayerTest, CacheChild) {
const SkAlpha alpha_half = 255 / 2;
auto initial_transform = SkMatrix::Translate(50.0, 25.5);
auto other_transform = SkMatrix::Scale(1.0, 2.0);
const SkPath child_path = SkPath().addRect(SkRect::MakeWH(5.0f, 5.0f));
auto mock_layer = std::make_shared<MockLayer>(child_path);
auto layer =
std::make_shared<OpacityLayer>(alpha_half, SkPoint::Make(0.0f, 0.0f));
layer->Add(mock_layer);
DlPaint paint;
SkMatrix cache_ctm = initial_transform;
DisplayListBuilder cache_canvas;
cache_canvas.Transform(cache_ctm);
DisplayListBuilder other_canvas;
other_canvas.Transform(other_transform);
use_mock_raster_cache();
EXPECT_EQ(raster_cache()->GetLayerCachedEntriesCount(), (size_t)0);
const auto* cacheable_opacity_item = layer->raster_cache_item();
EXPECT_EQ(raster_cache()->GetLayerCachedEntriesCount(), (size_t)0);
EXPECT_EQ(cacheable_opacity_item->cache_state(),
RasterCacheItem::CacheState::kNone);
EXPECT_FALSE(cacheable_opacity_item->GetId().has_value());
preroll_context()->state_stack.set_preroll_delegate(initial_transform);
layer->Preroll(preroll_context());
LayerTree::TryToRasterCache(cacheable_items(), &paint_context());
EXPECT_EQ(raster_cache()->GetLayerCachedEntriesCount(), (size_t)1);
EXPECT_EQ(cacheable_opacity_item->cache_state(),
RasterCacheItem::CacheState::kChildren);
EXPECT_EQ(
cacheable_opacity_item->GetId().value(),
RasterCacheKeyID(RasterCacheKeyID::LayerChildrenIds(layer.get()).value(),
RasterCacheKeyType::kLayerChildren));
EXPECT_FALSE(raster_cache()->Draw(cacheable_opacity_item->GetId().value(),
other_canvas, &paint));
EXPECT_TRUE(raster_cache()->Draw(cacheable_opacity_item->GetId().value(),
cache_canvas, &paint));
}
TEST_F(OpacityLayerTest, CacheChildren) {
const SkAlpha alpha_half = 255 / 2;
auto initial_transform = SkMatrix::Translate(50.0, 25.5);
auto other_transform = SkMatrix::Scale(1.0, 2.0);
const SkPath child_path1 = SkPath().addRect(SkRect::MakeWH(5.0f, 5.0f));
const SkPath child_path2 = SkPath().addRect(SkRect::MakeWH(5.0f, 5.0f));
DlPaint paint;
auto mock_layer1 = std::make_shared<MockLayer>(child_path1);
auto mock_layer2 = std::make_shared<MockLayer>(child_path2);
auto layer =
std::make_shared<OpacityLayer>(alpha_half, SkPoint::Make(0.0f, 0.0f));
layer->Add(mock_layer1);
layer->Add(mock_layer2);
SkMatrix cache_ctm = initial_transform;
DisplayListBuilder cache_canvas;
cache_canvas.Transform(cache_ctm);
DisplayListBuilder other_canvas;
other_canvas.Transform(other_transform);
use_mock_raster_cache();
EXPECT_EQ(raster_cache()->GetLayerCachedEntriesCount(), (size_t)0);
const auto* cacheable_opacity_item = layer->raster_cache_item();
EXPECT_EQ(raster_cache()->GetLayerCachedEntriesCount(), (size_t)0);
EXPECT_EQ(cacheable_opacity_item->cache_state(),
RasterCacheItem::CacheState::kNone);
EXPECT_FALSE(cacheable_opacity_item->GetId().has_value());
preroll_context()->state_stack.set_preroll_delegate(initial_transform);
layer->Preroll(preroll_context());
LayerTree::TryToRasterCache(cacheable_items(), &paint_context());
EXPECT_EQ(raster_cache()->GetLayerCachedEntriesCount(), (size_t)1);
EXPECT_EQ(cacheable_opacity_item->cache_state(),
RasterCacheItem::CacheState::kChildren);
EXPECT_EQ(
cacheable_opacity_item->GetId().value(),
RasterCacheKeyID(RasterCacheKeyID::LayerChildrenIds(layer.get()).value(),
RasterCacheKeyType::kLayerChildren));
EXPECT_FALSE(raster_cache()->Draw(cacheable_opacity_item->GetId().value(),
other_canvas, &paint));
EXPECT_TRUE(raster_cache()->Draw(cacheable_opacity_item->GetId().value(),
cache_canvas, &paint));
}
TEST_F(OpacityLayerTest, ShouldNotCacheChildren) {
DlPaint paint;
auto opacity_layer =
std::make_shared<OpacityLayer>(128, SkPoint::Make(20, 20));
auto mock_layer = MockLayer::MakeOpacityCompatible(SkPath());
opacity_layer->Add(mock_layer);
PrerollContext* context = preroll_context();
use_mock_raster_cache();
EXPECT_EQ(raster_cache()->GetLayerCachedEntriesCount(), (size_t)0);
const auto* cacheable_opacity_item = opacity_layer->raster_cache_item();
EXPECT_EQ(raster_cache()->GetLayerCachedEntriesCount(), (size_t)0);
EXPECT_EQ(cacheable_opacity_item->cache_state(),
RasterCacheItem::CacheState::kNone);
EXPECT_FALSE(cacheable_opacity_item->GetId().has_value());
opacity_layer->Preroll(preroll_context());
EXPECT_EQ(context->renderable_state_flags,
LayerStateStack::kCallerCanApplyOpacity);
EXPECT_TRUE(opacity_layer->children_can_accept_opacity());
LayerTree::TryToRasterCache(cacheable_items(), &paint_context());
EXPECT_EQ(raster_cache()->GetLayerCachedEntriesCount(), (size_t)0);
EXPECT_EQ(cacheable_opacity_item->cache_state(),
RasterCacheItem::CacheState::kNone);
EXPECT_FALSE(cacheable_opacity_item->Draw(paint_context(), &paint));
}
TEST_F(OpacityLayerTest, FullyOpaque) {
const SkPath child_path = SkPath().addRect(SkRect::MakeWH(5.0f, 5.0f));
const SkPoint layer_offset = SkPoint::Make(0.5f, 1.5f);
const SkMatrix initial_transform = SkMatrix::Translate(0.5f, 0.5f);
const SkMatrix layer_transform =
SkMatrix::Translate(layer_offset.fX, layer_offset.fY);
const DlPaint child_paint = DlPaint(DlColor::kGreen());
const SkRect expected_layer_bounds =
layer_transform.mapRect(child_path.getBounds());
auto mock_layer = std::make_shared<MockLayer>(child_path, child_paint);
auto layer = std::make_shared<OpacityLayer>(SK_AlphaOPAQUE, layer_offset);
layer->Add(mock_layer);
preroll_context()->state_stack.set_preroll_delegate(initial_transform);
layer->Preroll(preroll_context());
EXPECT_EQ(mock_layer->paint_bounds(), child_path.getBounds());
EXPECT_EQ(layer->paint_bounds(), expected_layer_bounds);
EXPECT_EQ(layer->child_paint_bounds(), child_path.getBounds());
EXPECT_TRUE(mock_layer->needs_painting(paint_context()));
EXPECT_TRUE(layer->needs_painting(paint_context()));
EXPECT_EQ(mock_layer->parent_matrix(),
SkMatrix::Concat(initial_transform, layer_transform));
EXPECT_EQ(mock_layer->parent_mutators(),
std::vector({Mutator(layer_transform)}));
DisplayListBuilder expected_builder;
/* (Opacity)layer::Paint */ {
expected_builder.Save();
{
expected_builder.Translate(layer_offset.fX, layer_offset.fY);
// Opaque alpha needs no SaveLayer, just recurse into painting mock_layer
/* mock_layer::Paint */ {
expected_builder.DrawPath(child_path, child_paint);
}
}
expected_builder.Restore();
}
layer->Paint(display_list_paint_context());
EXPECT_TRUE(DisplayListsEQ_Verbose(display_list(), expected_builder.Build()));
}
TEST_F(OpacityLayerTest, FullyTransparent) {
const SkRect child_bounds = SkRect::MakeWH(5.0f, 5.0f);
const SkPath child_path = SkPath().addRect(child_bounds);
const SkPoint layer_offset = SkPoint::Make(0.5f, 1.5f);
const SkMatrix initial_transform = SkMatrix::Translate(0.5f, 0.5f);
const SkMatrix layer_transform =
SkMatrix::Translate(layer_offset.fX, layer_offset.fY);
const DlPaint child_paint = DlPaint(DlColor::kGreen());
const SkRect expected_layer_bounds =
layer_transform.mapRect(child_path.getBounds());
auto mock_layer = std::make_shared<MockLayer>(child_path, child_paint);
auto layer =
std::make_shared<OpacityLayer>(SK_AlphaTRANSPARENT, layer_offset);
layer->Add(mock_layer);
preroll_context()->state_stack.set_preroll_delegate(initial_transform);
layer->Preroll(preroll_context());
EXPECT_EQ(mock_layer->paint_bounds(), child_path.getBounds());
EXPECT_EQ(layer->paint_bounds(), expected_layer_bounds);
EXPECT_EQ(layer->child_paint_bounds(), child_path.getBounds());
EXPECT_TRUE(mock_layer->needs_painting(paint_context()));
EXPECT_TRUE(layer->needs_painting(paint_context()));
EXPECT_EQ(mock_layer->parent_matrix(),
SkMatrix::Concat(initial_transform, layer_transform));
EXPECT_EQ(
mock_layer->parent_mutators(),
std::vector({Mutator(layer_transform), Mutator(SK_AlphaTRANSPARENT)}));
DisplayListBuilder expected_builder;
/* (Opacity)layer::Paint */ {
expected_builder.Save();
{
expected_builder.Translate(layer_offset.fX, layer_offset.fY);
/* (Opacity)layer::PaintChildren */ {
DlPaint save_paint(DlPaint().setOpacity(layer->opacity()));
expected_builder.SaveLayer(&child_bounds, &save_paint);
/* mock_layer::Paint */ {
expected_builder.DrawPath(child_path, child_paint);
}
expected_builder.Restore();
}
}
expected_builder.Restore();
}
layer->Paint(display_list_paint_context());
EXPECT_TRUE(DisplayListsEQ_Verbose(display_list(), expected_builder.Build()));
}
TEST_F(OpacityLayerTest, HalfTransparent) {
const SkPath child_path = SkPath().addRect(SkRect::MakeWH(5.0f, 5.0f));
const SkPoint layer_offset = SkPoint::Make(0.5f, 1.5f);
const SkMatrix initial_transform = SkMatrix::Translate(0.5f, 0.5f);
const SkMatrix layer_transform =
SkMatrix::Translate(layer_offset.fX, layer_offset.fY);
const DlPaint child_paint = DlPaint(DlColor::kGreen());
const SkRect expected_layer_bounds =
layer_transform.mapRect(child_path.getBounds());
const SkAlpha alpha_half = 255 / 2;
auto mock_layer = std::make_shared<MockLayer>(child_path, child_paint);
auto layer = std::make_shared<OpacityLayer>(alpha_half, layer_offset);
layer->Add(mock_layer);
preroll_context()->state_stack.set_preroll_delegate(initial_transform);
layer->Preroll(preroll_context());
EXPECT_EQ(mock_layer->paint_bounds(), child_path.getBounds());
EXPECT_EQ(layer->paint_bounds(), expected_layer_bounds);
EXPECT_EQ(layer->child_paint_bounds(), child_path.getBounds());
EXPECT_TRUE(mock_layer->needs_painting(paint_context()));
EXPECT_TRUE(layer->needs_painting(paint_context()));
EXPECT_EQ(mock_layer->parent_matrix(),
SkMatrix::Concat(initial_transform, layer_transform));
EXPECT_EQ(mock_layer->parent_mutators(),
std::vector({Mutator(layer_transform), Mutator(alpha_half)}));
SkRect opacity_bounds;
expected_layer_bounds.makeOffset(-layer_offset.fX, -layer_offset.fY)
.roundOut(&opacity_bounds);
DlPaint save_paint = DlPaint().setAlpha(alpha_half);
DlPaint child_dl_paint = DlPaint(DlColor::kGreen());
auto expected_builder = DisplayListBuilder();
/* (Opacity)layer::Paint */ {
expected_builder.Save();
expected_builder.Translate(layer_offset.fX, layer_offset.fY);
/* (Opacity)layer::PaintChildren */ {
expected_builder.SaveLayer(&opacity_bounds, &save_paint);
/* mock_layer::Paint */ {
expected_builder.DrawPath(child_path, child_dl_paint);
}
expected_builder.Restore();
}
expected_builder.Restore();
}
sk_sp<DisplayList> expected_display_list = expected_builder.Build();
layer->Paint(display_list_paint_context());
EXPECT_TRUE(DisplayListsEQ_Verbose(display_list(), expected_display_list));
}
TEST_F(OpacityLayerTest, Nested) {
const SkPath child1_path = SkPath().addRect(SkRect::MakeWH(5.0f, 6.0f));
const SkPath child2_path = SkPath().addRect(SkRect::MakeWH(2.0f, 7.0f));
const SkPath child3_path = SkPath().addRect(SkRect::MakeWH(6.0f, 6.0f));
const SkPoint layer1_offset = SkPoint::Make(0.5f, 1.5f);
const SkPoint layer2_offset = SkPoint::Make(2.5f, 0.5f);
const SkMatrix initial_transform = SkMatrix::Translate(0.5f, 0.5f);
const SkMatrix layer1_transform =
SkMatrix::Translate(layer1_offset.fX, layer1_offset.fY);
const SkMatrix layer2_transform =
SkMatrix::Translate(layer2_offset.fX, layer2_offset.fY);
const DlPaint child1_paint = DlPaint(DlColor::kRed());
const DlPaint child2_paint = DlPaint(DlColor::kBlue());
const DlPaint child3_paint = DlPaint(DlColor::kGreen());
const SkAlpha alpha1 = 155;
const SkAlpha alpha2 = 224;
auto mock_layer1 = std::make_shared<MockLayer>(child1_path, child1_paint);
auto mock_layer2 = std::make_shared<MockLayer>(child2_path, child2_paint);
auto mock_layer3 = std::make_shared<MockLayer>(child3_path, child3_paint);
auto layer1 = std::make_shared<OpacityLayer>(alpha1, layer1_offset);
auto layer2 = std::make_shared<OpacityLayer>(alpha2, layer2_offset);
layer2->Add(mock_layer2);
layer1->Add(mock_layer1);
layer1->Add(layer2);
layer1->Add(mock_layer3); // Ensure something is processed after recursion
const SkRect expected_layer2_bounds =
layer2_transform.mapRect(child2_path.getBounds());
SkRect layer1_child_bounds = expected_layer2_bounds;
layer1_child_bounds.join(child1_path.getBounds());
layer1_child_bounds.join(child3_path.getBounds());
SkRect expected_layer1_bounds = layer1_transform.mapRect(layer1_child_bounds);
preroll_context()->state_stack.set_preroll_delegate(initial_transform);
layer1->Preroll(preroll_context());
EXPECT_EQ(mock_layer1->paint_bounds(), child1_path.getBounds());
EXPECT_EQ(mock_layer2->paint_bounds(), child2_path.getBounds());
EXPECT_EQ(mock_layer3->paint_bounds(), child3_path.getBounds());
EXPECT_EQ(layer1->paint_bounds(), expected_layer1_bounds);
EXPECT_EQ(layer1->child_paint_bounds(), layer1_child_bounds);
EXPECT_EQ(layer2->paint_bounds(), expected_layer2_bounds);
EXPECT_EQ(layer2->child_paint_bounds(), child2_path.getBounds());
EXPECT_TRUE(mock_layer1->needs_painting(paint_context()));
EXPECT_TRUE(mock_layer2->needs_painting(paint_context()));
EXPECT_TRUE(mock_layer3->needs_painting(paint_context()));
EXPECT_TRUE(layer1->needs_painting(paint_context()));
EXPECT_TRUE(layer2->needs_painting(paint_context()));
EXPECT_EQ(mock_layer1->parent_matrix(),
SkMatrix::Concat(initial_transform, layer1_transform));
EXPECT_EQ(mock_layer1->parent_mutators(),
std::vector({Mutator(layer1_transform), Mutator(alpha1)}));
EXPECT_EQ(
mock_layer2->parent_matrix(),
SkMatrix::Concat(SkMatrix::Concat(initial_transform, layer1_transform),
layer2_transform));
EXPECT_EQ(mock_layer2->parent_mutators(),
std::vector({Mutator(layer1_transform), Mutator(alpha1),
Mutator(layer2_transform), Mutator(alpha2)}));
EXPECT_EQ(mock_layer3->parent_matrix(),
SkMatrix::Concat(initial_transform, layer1_transform));
EXPECT_EQ(mock_layer3->parent_mutators(),
std::vector({Mutator(layer1_transform), Mutator(alpha1)}));
SkRect opacity1_bounds =
expected_layer1_bounds.makeOffset(-layer1_offset.fX, -layer1_offset.fY);
SkRect opacity2_bounds =
expected_layer2_bounds.makeOffset(-layer2_offset.fX, -layer2_offset.fY);
DlPaint opacity1_paint;
opacity1_paint.setOpacity(alpha1 * (1.0 / SK_AlphaOPAQUE));
DlPaint opacity2_paint;
opacity2_paint.setOpacity(alpha2 * (1.0 / SK_AlphaOPAQUE));
DisplayListBuilder expected_builder;
/* (Opacity)layer1::Paint */ {
expected_builder.Save();
{
expected_builder.Translate(layer1_offset.fX, layer1_offset.fY);
/* (Opacity)layer1::PaintChildren */ {
expected_builder.SaveLayer(&opacity1_bounds, &opacity1_paint);
/* mock_layer1::Paint */ {
expected_builder.DrawPath(child1_path, child1_paint);
}
/* (Opacity)layer2::Paint */ {
expected_builder.Save();
{
expected_builder.Translate(layer2_offset.fX, layer2_offset.fY);
/* (Opacity)layer2::PaintChidren */ {
expected_builder.SaveLayer(&opacity2_bounds, &opacity2_paint);
{
/* mock_layer2::Paint */ {
expected_builder.DrawPath(child2_path, child2_paint);
}
}
expected_builder.Restore();
}
}
expected_builder.Restore();
}
/* mock_layer3::Paint */ {
expected_builder.DrawPath(child3_path, child3_paint);
}
expected_builder.Restore();
}
}
expected_builder.Restore();
}
layer1->Paint(display_list_paint_context());
EXPECT_TRUE(DisplayListsEQ_Verbose(display_list(), expected_builder.Build()));
}
TEST_F(OpacityLayerTest, Readback) {
auto layer = std::make_shared<OpacityLayer>(kOpaque_SkAlphaType, SkPoint());
layer->Add(std::make_shared<MockLayer>(SkPath()));
// OpacityLayer does not read from surface
preroll_context()->surface_needs_readback = false;
layer->Preroll(preroll_context());
EXPECT_FALSE(preroll_context()->surface_needs_readback);
// OpacityLayer blocks child with readback
auto mock_layer = std::make_shared<MockLayer>(SkPath(), DlPaint());
mock_layer->set_fake_reads_surface(true);
layer->Add(mock_layer);
preroll_context()->surface_needs_readback = false;
layer->Preroll(preroll_context());
EXPECT_FALSE(preroll_context()->surface_needs_readback);
}
TEST_F(OpacityLayerTest, CullRectIsTransformed) {
auto clip_rect_layer = std::make_shared<ClipRectLayer>(
SkRect::MakeLTRB(0, 0, 10, 10), Clip::kHardEdge);
auto opacity_layer =
std::make_shared<OpacityLayer>(128, SkPoint::Make(20, 20));
auto mock_layer = std::make_shared<MockLayer>(SkPath());
clip_rect_layer->Add(opacity_layer);
opacity_layer->Add(mock_layer);
clip_rect_layer->Preroll(preroll_context());
EXPECT_EQ(mock_layer->parent_cull_rect().fLeft, -20);
EXPECT_EQ(mock_layer->parent_cull_rect().fTop, -20);
}
TEST_F(OpacityLayerTest, OpacityInheritanceCompatibleChild) {
auto opacity_layer =
std::make_shared<OpacityLayer>(128, SkPoint::Make(20, 20));
auto mock_layer = MockLayer::MakeOpacityCompatible(SkPath());
opacity_layer->Add(mock_layer);
PrerollContext* context = preroll_context();
opacity_layer->Preroll(context);
EXPECT_EQ(context->renderable_state_flags,
LayerStateStack::kCallerCanApplyOpacity);
EXPECT_TRUE(opacity_layer->children_can_accept_opacity());
}
TEST_F(OpacityLayerTest, OpacityInheritanceIncompatibleChild) {
auto opacity_layer =
std::make_shared<OpacityLayer>(128, SkPoint::Make(20, 20));
auto mock_layer = MockLayer::Make(SkPath());
opacity_layer->Add(mock_layer);
PrerollContext* context = preroll_context();
opacity_layer->Preroll(context);
EXPECT_EQ(context->renderable_state_flags,
LayerStateStack::kCallerCanApplyOpacity);
EXPECT_FALSE(opacity_layer->children_can_accept_opacity());
}
TEST_F(OpacityLayerTest, OpacityInheritanceThroughContainer) {
auto opacity_layer =
std::make_shared<OpacityLayer>(128, SkPoint::Make(20, 20));
auto container_layer = std::make_shared<ContainerLayer>();
auto mock_layer = MockLayer::MakeOpacityCompatible(SkPath());
container_layer->Add(mock_layer);
opacity_layer->Add(container_layer);
PrerollContext* context = preroll_context();
opacity_layer->Preroll(context);
EXPECT_EQ(context->renderable_state_flags,
LayerStateStack::kCallerCanApplyOpacity);
EXPECT_TRUE(opacity_layer->children_can_accept_opacity());
}
TEST_F(OpacityLayerTest, OpacityInheritanceThroughTransform) {
auto opacity_layer =
std::make_shared<OpacityLayer>(128, SkPoint::Make(20, 20));
auto transformLayer = std::make_shared<TransformLayer>(SkMatrix::Scale(2, 2));
auto mock_layer = MockLayer::MakeOpacityCompatible(SkPath());
transformLayer->Add(mock_layer);
opacity_layer->Add(transformLayer);
PrerollContext* context = preroll_context();
opacity_layer->Preroll(context);
EXPECT_EQ(context->renderable_state_flags,
LayerStateStack::kCallerCanApplyOpacity);
EXPECT_TRUE(opacity_layer->children_can_accept_opacity());
}
TEST_F(OpacityLayerTest, OpacityInheritanceThroughImageFilter) {
auto opacity_layer =
std::make_shared<OpacityLayer>(128, SkPoint::Make(20, 20));
auto filter_layer = std::make_shared<ImageFilterLayer>(
std::make_shared<DlBlurImageFilter>(5.0, 5.0, DlTileMode::kClamp));
auto mock_layer = MockLayer::MakeOpacityCompatible(SkPath());
filter_layer->Add(mock_layer);
opacity_layer->Add(filter_layer);
PrerollContext* context = preroll_context();
opacity_layer->Preroll(context);
EXPECT_EQ(context->renderable_state_flags,
LayerStateStack::kCallerCanApplyOpacity);
EXPECT_TRUE(opacity_layer->children_can_accept_opacity());
}
TEST_F(OpacityLayerTest, OpacityInheritanceNestedWithCompatibleChild) {
SkPoint offset1 = SkPoint::Make(10, 20);
SkPoint offset2 = SkPoint::Make(20, 10);
SkPath mock_path = SkPath::Rect({10, 10, 20, 20});
auto opacity_layer_1 = std::make_shared<OpacityLayer>(128, offset1);
auto opacity_layer_2 = std::make_shared<OpacityLayer>(64, offset2);
auto mock_layer = MockLayer::MakeOpacityCompatible(mock_path);
opacity_layer_2->Add(mock_layer);
opacity_layer_1->Add(opacity_layer_2);
PrerollContext* context = preroll_context();
opacity_layer_1->Preroll(context);
EXPECT_EQ(context->renderable_state_flags,
LayerStateStack::kCallerCanApplyOpacity);
EXPECT_TRUE(opacity_layer_1->children_can_accept_opacity());
EXPECT_TRUE(opacity_layer_2->children_can_accept_opacity());
DlPaint savelayer_paint;
SkScalar inherited_opacity = 128 * 1.0 / SK_AlphaOPAQUE;
inherited_opacity *= 64 * 1.0 / SK_AlphaOPAQUE;
savelayer_paint.setOpacity(inherited_opacity);
DisplayListBuilder expected_builder;
/* opacity_layer_1::Paint */ {
expected_builder.Save();
{
expected_builder.Translate(offset1.fX, offset1.fY);
/* opacity_layer_2::Paint */ {
expected_builder.Save();
{
expected_builder.Translate(offset2.fX, offset2.fY);
/* mock_layer::Paint */ {
expected_builder.DrawPath(mock_path,
DlPaint().setOpacity(inherited_opacity));
}
}
expected_builder.Restore();
}
}
expected_builder.Restore();
}
opacity_layer_1->Paint(display_list_paint_context());
EXPECT_TRUE(DisplayListsEQ_Verbose(expected_builder.Build(), display_list()));
}
TEST_F(OpacityLayerTest, OpacityInheritanceNestedWithIncompatibleChild) {
SkPoint offset1 = SkPoint::Make(10, 20);
SkPoint offset2 = SkPoint::Make(20, 10);
SkPath mock_path = SkPath::Rect({10, 10, 20, 20});
auto opacity_layer_1 = std::make_shared<OpacityLayer>(128, offset1);
auto opacity_layer_2 = std::make_shared<OpacityLayer>(64, offset2);
auto mock_layer = MockLayer::Make(mock_path);
opacity_layer_2->Add(mock_layer);
opacity_layer_1->Add(opacity_layer_2);
PrerollContext* context = preroll_context();
opacity_layer_1->Preroll(context);
EXPECT_EQ(context->renderable_state_flags,
LayerStateStack::kCallerCanApplyOpacity);
EXPECT_TRUE(opacity_layer_1->children_can_accept_opacity());
EXPECT_FALSE(opacity_layer_2->children_can_accept_opacity());
DlPaint savelayer_paint;
SkScalar inherited_opacity = 128 * 1.0 / SK_AlphaOPAQUE;
inherited_opacity *= 64 * 1.0 / SK_AlphaOPAQUE;
savelayer_paint.setOpacity(inherited_opacity);
DisplayListBuilder expected_builder;
/* opacity_layer_1::Paint */ {
expected_builder.Save();
{
expected_builder.Translate(offset1.fX, offset1.fY);
/* opacity_layer_2::Paint */ {
expected_builder.Save();
{
expected_builder.Translate(offset2.fX, offset2.fY);
expected_builder.SaveLayer(&mock_layer->paint_bounds(),
&savelayer_paint);
/* mock_layer::Paint */ {
expected_builder.DrawPath(mock_path, DlPaint());
}
}
expected_builder.Restore();
}
}
expected_builder.Restore();
}
opacity_layer_1->Paint(display_list_paint_context());
EXPECT_TRUE(DisplayListsEQ_Verbose(expected_builder.Build(), display_list()));
}
using OpacityLayerDiffTest = DiffContextTest;
TEST_F(OpacityLayerDiffTest, FractionalTranslation) {
auto picture = CreateDisplayListLayer(
CreateDisplayList(SkRect::MakeLTRB(10, 10, 60, 60)));
auto layer = CreateOpacityLater({picture}, 128, SkPoint::Make(0.5, 0.5));
MockLayerTree tree1;
tree1.root()->Add(layer);
auto damage = DiffLayerTree(tree1, MockLayerTree(), SkIRect::MakeEmpty(), 0,
0, /*use_raster_cache=*/false);
EXPECT_EQ(damage.frame_damage, SkIRect::MakeLTRB(10, 10, 61, 61));
}
TEST_F(OpacityLayerDiffTest, FractionalTranslationWithRasterCache) {
auto picture = CreateDisplayListLayer(
CreateDisplayList(SkRect::MakeLTRB(10, 10, 60, 60)));
auto layer = CreateOpacityLater({picture}, 128, SkPoint::Make(0.5, 0.5));
MockLayerTree tree1;
tree1.root()->Add(layer);
auto damage = DiffLayerTree(tree1, MockLayerTree(), SkIRect::MakeEmpty(), 0,
0, /*use_raster_cache=*/true);
EXPECT_EQ(damage.frame_damage, SkIRect::MakeLTRB(11, 11, 61, 61));
}
TEST_F(OpacityLayerTest, FullyOpaqueWithFractionalValues) {
use_mock_raster_cache(); // Ensure pixel-snapped alignment.
const SkPath child_path = SkPath().addRect(SkRect::MakeWH(5.0f, 5.0f));
const SkPoint layer_offset = SkPoint::Make(0.5f, 1.5f);
const SkMatrix initial_transform = SkMatrix::Translate(0.5f, 0.5f);
const DlPaint child_paint = DlPaint(DlColor::kGreen());
auto mock_layer = std::make_shared<MockLayer>(child_path, child_paint);
auto layer = std::make_shared<OpacityLayer>(SK_AlphaOPAQUE, layer_offset);
layer->Add(mock_layer);
preroll_context()->state_stack.set_preroll_delegate(initial_transform);
layer->Preroll(preroll_context());
auto expected_builder = DisplayListBuilder();
/* (Opacity)layer::Paint */ {
expected_builder.Save();
expected_builder.Translate(layer_offset.fX, layer_offset.fY);
// Opaque alpha needs no SaveLayer, just recurse into painting mock_layer
// but since we use the mock raster cache we pixel snap the transform
expected_builder.TransformReset();
expected_builder.Transform2DAffine(
1, 0, SkScalarRoundToScalar(layer_offset.fX), //
0, 1, SkScalarRoundToScalar(layer_offset.fY));
/* mock_layer::Paint */ {
expected_builder.DrawPath(child_path, child_paint);
}
expected_builder.Restore();
}
sk_sp<DisplayList> expected_display_list = expected_builder.Build();
layer->Paint(display_list_paint_context());
EXPECT_TRUE(DisplayListsEQ_Verbose(display_list(), expected_display_list));
}
TEST_F(OpacityLayerTest, FullyTransparentDoesNotCullPlatformView) {
const SkPoint opacity_offset = SkPoint::Make(0.5f, 1.5f);
const SkPoint view_offset = SkPoint::Make(0.0f, 0.0f);
const SkSize view_size = SkSize::Make(8.0f, 8.0f);
const int64_t view_id = 42;
auto platform_view =
std::make_shared<PlatformViewLayer>(view_offset, view_size, view_id);
auto opacity =
std::make_shared<OpacityLayer>(SK_AlphaTRANSPARENT, opacity_offset);
opacity->Add(platform_view);
auto embedder = MockViewEmbedder();
DisplayListBuilder fake_overlay_builder;
embedder.AddCanvas(&fake_overlay_builder);
preroll_context()->view_embedder = &embedder;
paint_context().view_embedder = &embedder;
opacity->Preroll(preroll_context());
EXPECT_EQ(embedder.prerolled_views(), std::vector<int64_t>({view_id}));
opacity->Paint(paint_context());
EXPECT_EQ(embedder.painted_views(), std::vector<int64_t>({view_id}));
}
} // namespace testing
} // namespace flutter
// NOLINTEND(bugprone-unchecked-optional-access)