blob: b1399d6f319cdd389fde74ea45ca07bc19502227 [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/layers/picture_layer_impl.h"
#include <stddef.h>
#include <stdint.h>
#include <algorithm>
#include <cmath>
#include <limits>
#include <memory>
#include <set>
#include <utility>
#include "base/metrics/histogram_macros.h"
#include "base/no_destructor.h"
#include "base/numerics/ranges.h"
#include "base/system/sys_info.h"
#include "base/time/time.h"
#include "base/trace_event/traced_value.h"
#include "build/build_config.h"
#include "cc/base/math_util.h"
#include "cc/benchmarks/micro_benchmark_impl.h"
#include "cc/debug/debug_colors.h"
#include "cc/layers/append_quads_data.h"
#include "cc/layers/solid_color_layer_impl.h"
#include "cc/paint/display_item_list.h"
#include "cc/tiles/tile_manager.h"
#include "cc/tiles/tiling_set_raster_queue_all.h"
#include "cc/trees/effect_node.h"
#include "cc/trees/layer_tree_impl.h"
#include "cc/trees/occlusion.h"
#include "cc/trees/transform_node.h"
#include "components/viz/common/frame_sinks/begin_frame_args.h"
#include "components/viz/common/quads/debug_border_draw_quad.h"
#include "components/viz/common/quads/picture_draw_quad.h"
#include "components/viz/common/quads/solid_color_draw_quad.h"
#include "components/viz/common/quads/tile_draw_quad.h"
#include "components/viz/common/traced_value.h"
#include "ui/gfx/geometry/quad_f.h"
#include "ui/gfx/geometry/rect_conversions.h"
#include "ui/gfx/geometry/size_conversions.h"
namespace cc {
namespace {
// This must be > 1 as we multiply or divide by this to find a new raster
// scale during pinch.
const float kMaxScaleRatioDuringPinch = 2.0f;
// When creating a new tiling during pinch, snap to an existing
// tiling's scale if the desired scale is within this ratio.
const float kSnapToExistingTilingRatio = 1.2f;
// Large contents scale can cause overflow issues. Cap the ideal contents scale
// by this constant, since scales larger than this are usually not correct or
// their scale doesn't matter as long as it's large. Content scales usually
// closely match the default device-scale factor (so it's usually <= 5). See
// Renderer4.IdealContentsScale UMA (deprecated) for distribution of content
// scales.
const float kMaxIdealContentsScale = 10000.f;
// We try to avoid raster scale adjustment for will-change:transform for
// performance, unless the scale is too small compared to the ideal scale and
// the native scale.
const float kMinScaleRatioForWillChangeTransform = 0.25f;
// Used to avoid raster scale adjustment during a transform animation by
// using the maximum animation scale, but sometimes the maximum animation scale
// can't be accurately calculated (e.g. with nested scale transforms). We'll
// adjust raster scale if it is not affected by invalid scale and is smaller
// than the ideal scale divided by this ratio. The situation is rare.
// See PropertyTrees::MaximumAnimationToScreenScale() and
// AnimationAffectedByInvalidScale().
const float kRatioToAdjustRasterScaleForTransformAnimation = 1.5f;
// Intersect rects which may have right() and bottom() that overflow integer
// boundaries. This code is similar to gfx::Rect::Intersect with the exception
// that the types are promoted to int64_t when there is a chance of overflow.
gfx::Rect SafeIntersectRects(const gfx::Rect& one, const gfx::Rect& two) {
if (one.IsEmpty() || two.IsEmpty())
return gfx::Rect();
int rx = std::max(one.x(), two.x());
int ry = std::max(one.y(), two.y());
int64_t rr = std::min(static_cast<int64_t>(one.x()) + one.width(),
static_cast<int64_t>(two.x()) + two.width());
int64_t rb = std::min(static_cast<int64_t>(one.y()) + one.height(),
static_cast<int64_t>(two.y()) + two.height());
if (rx > rr || ry > rb)
return gfx::Rect();
return gfx::Rect(rx, ry, static_cast<int>(rr - rx),
static_cast<int>(rb - ry));
}
} // namespace
PictureLayerImpl::PictureLayerImpl(LayerTreeImpl* tree_impl, int id)
: LayerImpl(tree_impl, id, /*will_always_push_properties=*/true),
is_backdrop_filter_mask_(false),
was_screen_space_transform_animating_(false),
only_used_low_res_last_append_quads_(false),
nearest_neighbor_(false) {
layer_tree_impl()->RegisterPictureLayerImpl(this);
}
PictureLayerImpl::~PictureLayerImpl() {
if (twin_layer_)
twin_layer_->twin_layer_ = nullptr;
// We only track PaintWorklet-containing PictureLayerImpls on the pending
// tree. However this deletion may happen outside the commit flow when we are
// on the recycle tree instead, so just check !IsActiveTree().
if (!paint_worklet_records_.empty() && !layer_tree_impl()->IsActiveTree())
layer_tree_impl()->NotifyLayerHasPaintWorkletsChanged(this, false);
// Similarly, AnimatedPaintWorkletTracker is only valid on the pending tree.
if (!layer_tree_impl()->IsActiveTree()) {
layer_tree_impl()
->paint_worklet_tracker()
.UpdatePaintWorkletInputProperties({}, this);
}
layer_tree_impl()->UnregisterPictureLayerImpl(this);
// Unregister for all images on the current raster source.
UnregisterAnimatedImages();
}
const char* PictureLayerImpl::LayerTypeAsString() const {
return "cc::PictureLayerImpl";
}
std::unique_ptr<LayerImpl> PictureLayerImpl::CreateLayerImpl(
LayerTreeImpl* tree_impl) {
return PictureLayerImpl::Create(tree_impl, id());
}
void PictureLayerImpl::PushPropertiesTo(LayerImpl* base_layer) {
PictureLayerImpl* layer_impl = static_cast<PictureLayerImpl*>(base_layer);
LayerImpl::PushPropertiesTo(base_layer);
// Twin relationships should never change once established.
DCHECK(!twin_layer_ || twin_layer_ == layer_impl);
DCHECK(!twin_layer_ || layer_impl->twin_layer_ == this);
// The twin relationship does not need to exist before the first
// PushPropertiesTo from pending to active layer since before that the active
// layer can not have a pile or tilings, it has only been created and inserted
// into the tree at that point.
twin_layer_ = layer_impl;
layer_impl->twin_layer_ = this;
layer_impl->SetNearestNeighbor(nearest_neighbor_);
layer_impl->SetDirectlyCompositedImageSize(directly_composited_image_size_);
layer_impl->SetIsBackdropFilterMask(is_backdrop_filter_mask_);
// Solid color layers have no tilings.
DCHECK(!raster_source_->IsSolidColor() || tilings_->num_tilings() == 0);
// The pending tree should only have a high res (and possibly low res) tiling.
DCHECK_LE(tilings_->num_tilings(),
layer_tree_impl()->create_low_res_tiling() ? 2u : 1u);
layer_impl->set_gpu_raster_max_texture_size(gpu_raster_max_texture_size_);
layer_impl->UpdateRasterSource(raster_source_, &invalidation_, tilings_.get(),
&paint_worklet_records_);
DCHECK(invalidation_.IsEmpty());
// After syncing a solid color layer, the active layer has no tilings.
DCHECK(!raster_source_->IsSolidColor() ||
layer_impl->tilings_->num_tilings() == 0);
layer_impl->raster_page_scale_ = raster_page_scale_;
layer_impl->raster_device_scale_ = raster_device_scale_;
layer_impl->raster_source_scale_ = raster_source_scale_;
layer_impl->raster_contents_scale_ = raster_contents_scale_;
layer_impl->low_res_raster_contents_scale_ = low_res_raster_contents_scale_;
layer_impl->directly_composited_image_initial_raster_scale_ =
directly_composited_image_initial_raster_scale_;
// Simply push the value to the active tree without any extra invalidations,
// since the pending tree tiles would have this handled. This is here to
// ensure the state is consistent for future raster.
layer_impl->lcd_text_disallowed_reason_ = lcd_text_disallowed_reason_;
layer_impl->SanityCheckTilingState();
}
void PictureLayerImpl::AppendQuads(viz::CompositorRenderPass* render_pass,
AppendQuadsData* append_quads_data) {
// RenderSurfaceImpl::AppendQuads sets mask properties in the DrawQuad for
// the masked surface, which will apply to both the backdrop filter and the
// contents of the masked surface, so we should not append quads of the mask
// layer in DstIn blend mode which would apply the mask in another codepath.
if (is_backdrop_filter_mask_)
return;
// The bounds and the pile size may differ if the pile wasn't updated (ie.
// PictureLayer::Update didn't happen). In that case the pile will be empty.
DCHECK(raster_source_->GetSize().IsEmpty() ||
bounds() == raster_source_->GetSize())
<< " bounds " << bounds().ToString() << " pile "
<< raster_source_->GetSize().ToString();
viz::SharedQuadState* shared_quad_state =
render_pass->CreateAndAppendSharedQuadState();
if (raster_source_->IsSolidColor()) {
// TODO(979672): This is still hard-coded at 1.0. This has some history:
// - for crbug.com/769319, the contents scale was allowed to change, to
// avoid blurring on high-dpi screens.
// - for crbug.com/796558, the max device scale was hard-coded back to 1.0
// for single-tile masks, to avoid problems with transforms.
// To avoid those transform/scale bugs, this is currently left at 1.0. See
// crbug.com/979672 for more context and test links.
float max_contents_scale = 1;
// The downstream CA layers use shared_quad_state to generate resources of
// the right size even if it is a solid color picture layer.
PopulateScaledSharedQuadState(shared_quad_state, max_contents_scale,
contents_opaque());
AppendDebugBorderQuad(render_pass, gfx::Rect(bounds()), shared_quad_state,
append_quads_data);
gfx::Rect scaled_visible_layer_rect =
shared_quad_state->visible_quad_layer_rect;
Occlusion occlusion = draw_properties().occlusion_in_content_space;
EffectNode* effect_node = GetEffectTree().Node(effect_tree_index());
SolidColorLayerImpl::AppendSolidQuads(
render_pass, occlusion, shared_quad_state, scaled_visible_layer_rect,
raster_source_->GetSolidColor(),
!layer_tree_impl()->settings().enable_edge_anti_aliasing,
effect_node->blend_mode, append_quads_data);
return;
}
float device_scale_factor = layer_tree_impl()->device_scale_factor();
// If we don't have tilings, we're likely going to append a checkerboard quad
// the size of the layer. In that case, use scale 1 for more stable
// to-screen-space mapping.
float max_contents_scale =
tilings_->num_tilings() ? MaximumTilingContentsScale() : 1.f;
PopulateScaledSharedQuadState(shared_quad_state, max_contents_scale,
contents_opaque());
if (directly_composited_image_size_) {
// Directly composited images should be clipped to the layer's content rect.
// When a PictureLayerTiling is created for a directly composited image, the
// layer bounds are multiplied by the raster scale in order to compute the
// tile size. If the aspect ratio of the layer doesn't match that of the
// image, it's possible that one of the dimensions of the resulting size
// (layer bounds * raster scale) is a fractional number, as raster scale
// does not scale x and y independently.
// When this happens, the ToEnclosingRect() operation in
// |PictureLayerTiling::EnclosingContentsRectFromLayer()| will
// create a tiling that, when scaled by |max_contents_scale| above, is
// larger than the layer bounds by a fraction of a pixel.
gfx::Rect bounds_in_target_space = MathUtil::MapEnclosingClippedRect(
draw_properties().target_space_transform, gfx::Rect(bounds()));
if (is_clipped())
bounds_in_target_space.Intersect(draw_properties().clip_rect);
if (shared_quad_state->is_clipped)
bounds_in_target_space.Intersect(shared_quad_state->clip_rect);
shared_quad_state->is_clipped = true;
shared_quad_state->clip_rect = bounds_in_target_space;
#if DCHECK_IS_ON()
// Validate that the tile and bounds size are always within one pixel.
PictureLayerTiling* high_res =
tilings_->FindTilingWithResolution(HIGH_RESOLUTION);
if (high_res) {
const float epsilon = 1.f;
gfx::SizeF scaled_tiling_size(high_res->tiling_size());
scaled_tiling_size.Scale(1 / raster_contents_scale_.x(),
1 / raster_contents_scale_.y());
if (raster_contents_scale_.x() >= 1.f)
DCHECK(std::abs(bounds().width() - scaled_tiling_size.width()) <
epsilon);
if (raster_contents_scale_.y() >= 1.f)
DCHECK(std::abs(bounds().height() - scaled_tiling_size.height()) <
epsilon);
}
#endif
}
Occlusion scaled_occlusion =
draw_properties()
.occlusion_in_content_space.GetOcclusionWithGivenDrawTransform(
shared_quad_state->quad_to_target_transform);
if (current_draw_mode_ == DRAW_MODE_RESOURCELESS_SOFTWARE) {
DCHECK(shared_quad_state->quad_layer_rect.origin() == gfx::Point(0, 0));
AppendDebugBorderQuad(
render_pass, shared_quad_state->quad_layer_rect, shared_quad_state,
append_quads_data, DebugColors::DirectPictureBorderColor(),
DebugColors::DirectPictureBorderWidth(device_scale_factor));
gfx::Rect geometry_rect = shared_quad_state->visible_quad_layer_rect;
gfx::Rect visible_geometry_rect =
scaled_occlusion.GetUnoccludedContentRect(geometry_rect);
bool needs_blending = !contents_opaque();
// The raster source may not be valid over the entire visible rect,
// and rastering outside of that may cause incorrect pixels.
gfx::Rect scaled_recorded_viewport = gfx::ScaleToEnclosingRect(
raster_source_->RecordedViewport(), max_contents_scale);
geometry_rect.Intersect(scaled_recorded_viewport);
visible_geometry_rect.Intersect(scaled_recorded_viewport);
if (visible_geometry_rect.IsEmpty())
return;
DCHECK(raster_source_->HasRecordings());
gfx::Rect quad_content_rect = shared_quad_state->visible_quad_layer_rect;
gfx::Size texture_size = quad_content_rect.size();
gfx::RectF texture_rect = gfx::RectF(gfx::SizeF(texture_size));
viz::PictureDrawQuad::ImageAnimationMap image_animation_map;
const auto* controller = layer_tree_impl()->image_animation_controller();
WhichTree tree = layer_tree_impl()->IsPendingTree()
? WhichTree::PENDING_TREE
: WhichTree::ACTIVE_TREE;
for (const auto& image_data : raster_source_->GetDisplayItemList()
->discardable_image_map()
.animated_images_metadata()) {
image_animation_map[image_data.paint_image_id] =
controller->GetFrameIndexForImage(image_data.paint_image_id, tree);
}
auto* quad = render_pass->CreateAndAppendDrawQuad<viz::PictureDrawQuad>();
quad->SetNew(shared_quad_state, geometry_rect, visible_geometry_rect,
needs_blending, texture_rect, texture_size, nearest_neighbor_,
viz::RGBA_8888, quad_content_rect, max_contents_scale,
std::move(image_animation_map),
raster_source_->GetDisplayItemList());
ValidateQuadResources(quad);
return;
}
// If we're doing a regular AppendQuads (ie, not solid color or resourceless
// software draw, and if the visible rect is scrolled far enough away, then we
// may run into a floating point precision in AA calculations in the renderer.
// See crbug.com/765297. In order to avoid this, we shift the quads up from
// where they logically reside and adjust the shared_quad_state's transform
// instead. We only do this in a scale/translate matrices to ensure the math
// is correct.
gfx::Vector2d quad_offset;
if (shared_quad_state->quad_to_target_transform.IsScaleOrTranslation()) {
const auto& visible_rect = shared_quad_state->visible_quad_layer_rect;
quad_offset = gfx::Vector2d(-visible_rect.x(), -visible_rect.y());
}
gfx::Rect debug_border_rect(shared_quad_state->quad_layer_rect);
debug_border_rect.Offset(quad_offset);
AppendDebugBorderQuad(render_pass, debug_border_rect, shared_quad_state,
append_quads_data);
if (ShowDebugBorders(DebugBorderType::LAYER)) {
for (PictureLayerTilingSet::CoverageIterator iter(
tilings_.get(), max_contents_scale,
shared_quad_state->visible_quad_layer_rect,
ideal_contents_scale_key());
iter; ++iter) {
SkColor color;
float width;
if (*iter && iter->draw_info().IsReadyToDraw()) {
TileDrawInfo::Mode mode = iter->draw_info().mode();
if (mode == TileDrawInfo::SOLID_COLOR_MODE) {
color = DebugColors::SolidColorTileBorderColor();
width = DebugColors::SolidColorTileBorderWidth(device_scale_factor);
} else if (mode == TileDrawInfo::OOM_MODE) {
color = DebugColors::OOMTileBorderColor();
width = DebugColors::OOMTileBorderWidth(device_scale_factor);
} else if (iter.resolution() == HIGH_RESOLUTION) {
color = DebugColors::HighResTileBorderColor();
width = DebugColors::HighResTileBorderWidth(device_scale_factor);
} else if (iter.resolution() == LOW_RESOLUTION) {
color = DebugColors::LowResTileBorderColor();
width = DebugColors::LowResTileBorderWidth(device_scale_factor);
} else if (iter->contents_scale_key() > max_contents_scale) {
color = DebugColors::ExtraHighResTileBorderColor();
width = DebugColors::ExtraHighResTileBorderWidth(device_scale_factor);
} else {
color = DebugColors::ExtraLowResTileBorderColor();
width = DebugColors::ExtraLowResTileBorderWidth(device_scale_factor);
}
} else {
color = DebugColors::MissingTileBorderColor();
width = DebugColors::MissingTileBorderWidth(device_scale_factor);
}
auto* debug_border_quad =
render_pass->CreateAndAppendDrawQuad<viz::DebugBorderDrawQuad>();
gfx::Rect geometry_rect = iter.geometry_rect();
geometry_rect.Offset(quad_offset);
gfx::Rect visible_geometry_rect = geometry_rect;
debug_border_quad->SetNew(shared_quad_state,
geometry_rect,
visible_geometry_rect,
color,
width);
}
}
if (layer_tree_impl()->debug_state().highlight_non_lcd_text_layers) {
SkColor color =
DebugColors::NonLCDTextHighlightColor(lcd_text_disallowed_reason());
if (color != SK_ColorTRANSPARENT &&
GetRasterSource()->GetDisplayItemList()->AreaOfDrawText(
gfx::Rect(bounds()))) {
render_pass->CreateAndAppendDrawQuad<viz::SolidColorDrawQuad>()->SetNew(
shared_quad_state, debug_border_rect, debug_border_rect, color,
append_quads_data);
}
}
// Keep track of the tilings that were used so that tilings that are
// unused can be considered for removal.
last_append_quads_tilings_.clear();
// Ignore missing tiles outside of viewport for tile priority. This is
// normally the same as draw viewport but can be independently overridden by
// embedders like Android WebView with SetExternalTilePriorityConstraints.
gfx::Rect scaled_viewport_for_tile_priority = gfx::ScaleToEnclosingRect(
viewport_rect_for_tile_priority_in_content_space_, max_contents_scale);
size_t missing_tile_count = 0u;
size_t on_demand_missing_tile_count = 0u;
only_used_low_res_last_append_quads_ = true;
gfx::Rect scaled_recorded_viewport = gfx::ScaleToEnclosingRect(
raster_source_->RecordedViewport(), max_contents_scale);
for (PictureLayerTilingSet::CoverageIterator iter(
tilings_.get(), max_contents_scale,
shared_quad_state->visible_quad_layer_rect,
ideal_contents_scale_key());
iter; ++iter) {
gfx::Rect geometry_rect = iter.geometry_rect();
gfx::Rect visible_geometry_rect =
scaled_occlusion.GetUnoccludedContentRect(geometry_rect);
gfx::Rect offset_geometry_rect = geometry_rect;
offset_geometry_rect.Offset(quad_offset);
gfx::Rect offset_visible_geometry_rect = visible_geometry_rect;
offset_visible_geometry_rect.Offset(quad_offset);
bool needs_blending = !contents_opaque();
if (visible_geometry_rect.IsEmpty())
continue;
int64_t visible_geometry_area =
static_cast<int64_t>(visible_geometry_rect.width()) *
visible_geometry_rect.height();
append_quads_data->visible_layer_area += visible_geometry_area;
bool has_draw_quad = false;
if (*iter && iter->draw_info().IsReadyToDraw()) {
const TileDrawInfo& draw_info = iter->draw_info();
switch (draw_info.mode()) {
case TileDrawInfo::RESOURCE_MODE: {
gfx::RectF texture_rect = iter.texture_rect();
// The raster_contents_scale_ is the best scale that the layer is
// trying to produce, even though it may not be ideal. Since that's
// the best the layer can promise in the future, consider those as
// complete. But if a tile is ideal scale, we don't want to consider
// it incomplete and trying to replace it with a tile at a worse
// scale.
if (iter->contents_scale_key() != raster_contents_scale_key() &&
iter->contents_scale_key() != ideal_contents_scale_key() &&
geometry_rect.Intersects(scaled_viewport_for_tile_priority)) {
append_quads_data->num_incomplete_tiles++;
}
auto* quad =
render_pass->CreateAndAppendDrawQuad<viz::TileDrawQuad>();
quad->SetNew(
shared_quad_state, offset_geometry_rect,
offset_visible_geometry_rect, needs_blending,
draw_info.resource_id_for_export(), texture_rect,
draw_info.resource_size(), draw_info.is_premultiplied(),
nearest_neighbor_,
!layer_tree_impl()->settings().enable_edge_anti_aliasing);
ValidateQuadResources(quad);
has_draw_quad = true;
break;
}
case TileDrawInfo::SOLID_COLOR_MODE: {
float alpha =
(SkColorGetA(draw_info.solid_color()) * (1.0f / 255.0f)) *
shared_quad_state->opacity;
if (alpha >= std::numeric_limits<float>::epsilon()) {
auto* quad =
render_pass->CreateAndAppendDrawQuad<viz::SolidColorDrawQuad>();
quad->SetNew(
shared_quad_state, offset_geometry_rect,
offset_visible_geometry_rect, draw_info.solid_color(),
!layer_tree_impl()->settings().enable_edge_anti_aliasing);
ValidateQuadResources(quad);
}
has_draw_quad = true;
break;
}
case TileDrawInfo::OOM_MODE:
break; // Checkerboard.
}
}
if (!has_draw_quad) {
// Checkerboard.
SkColor color = safe_opaque_background_color();
if (ShowDebugBorders(DebugBorderType::LAYER)) {
// Fill the whole tile with the missing tile color.
color = DebugColors::DefaultCheckerboardColor();
}
auto* quad =
render_pass->CreateAndAppendDrawQuad<viz::SolidColorDrawQuad>();
quad->SetNew(shared_quad_state, offset_geometry_rect,
offset_visible_geometry_rect, color, false);
ValidateQuadResources(quad);
if (geometry_rect.Intersects(scaled_viewport_for_tile_priority)) {
append_quads_data->num_missing_tiles++;
++missing_tile_count;
}
append_quads_data->checkerboarded_visible_content_area +=
visible_geometry_area;
// Intersect checkerboard rect with interest rect to generate rect where
// we checkerboarded and has recording. The area where we don't have
// recording is not necessarily a Rect, and its area is calculated using
// subtraction.
gfx::Rect visible_rect_has_recording = visible_geometry_rect;
visible_rect_has_recording.Intersect(scaled_recorded_viewport);
int64_t checkerboarded_has_recording_area =
static_cast<int64_t>(visible_rect_has_recording.width()) *
visible_rect_has_recording.height();
append_quads_data->checkerboarded_needs_raster_content_area +=
checkerboarded_has_recording_area;
append_quads_data->checkerboarded_no_recording_content_area +=
visible_geometry_area - checkerboarded_has_recording_area;
continue;
}
if (iter.resolution() != HIGH_RESOLUTION) {
append_quads_data->approximated_visible_content_area +=
visible_geometry_area;
}
// If we have a draw quad, but it's not low resolution, then
// mark that we've used something other than low res to draw.
if (iter.resolution() != LOW_RESOLUTION)
only_used_low_res_last_append_quads_ = false;
if (last_append_quads_tilings_.empty() ||
last_append_quads_tilings_.back() != iter.CurrentTiling()) {
last_append_quads_tilings_.push_back(iter.CurrentTiling());
}
}
// Adjust shared_quad_state with the quad_offset, since we've adjusted each
// quad we've appended by it.
shared_quad_state->quad_to_target_transform.Translate(-quad_offset);
shared_quad_state->quad_layer_rect.Offset(quad_offset);
shared_quad_state->visible_quad_layer_rect.Offset(quad_offset);
if (missing_tile_count) {
TRACE_EVENT_INSTANT2("cc",
"PictureLayerImpl::AppendQuads checkerboard",
TRACE_EVENT_SCOPE_THREAD,
"missing_tile_count",
missing_tile_count,
"on_demand_missing_tile_count",
on_demand_missing_tile_count);
}
// Aggressively remove any tilings that are not seen to save memory. Note
// that this is at the expense of doing cause more frequent re-painting. A
// better scheme would be to maintain a tighter visible_layer_rect for the
// finer tilings.
CleanUpTilingsOnActiveLayer(last_append_quads_tilings_);
SanityCheckTilingState();
}
bool PictureLayerImpl::UpdateTiles() {
if (!CanHaveTilings()) {
ideal_page_scale_ = 0.f;
ideal_device_scale_ = 0.f;
ideal_contents_scale_ = gfx::Vector2dF(0.f, 0.f);
ideal_source_scale_ = gfx::Vector2dF(0.f, 0.f);
SanityCheckTilingState();
return false;
}
// Remove any non-ideal tilings that were not used last time we generated
// quads to save memory and processing time. Note that pending tree should
// only have one or two tilings (high and low res), so only clean up the
// active layer. This cleans it up here in case AppendQuads didn't run.
// If it did run, this would not remove any additional tilings.
if (layer_tree_impl()->IsActiveTree())
CleanUpTilingsOnActiveLayer(last_append_quads_tilings_);
UpdateIdealScales();
const bool should_adjust_raster_scale = ShouldAdjustRasterScale();
if (should_adjust_raster_scale)
RecalculateRasterScales();
UpdateTilingsForRasterScaleAndTranslation(should_adjust_raster_scale);
if (layer_tree_impl()->IsActiveTree())
AddLowResolutionTilingIfNeeded();
DCHECK(raster_page_scale_);
DCHECK(raster_device_scale_);
DCHECK(raster_source_scale_.x());
DCHECK(raster_source_scale_.y());
DCHECK(raster_contents_scale_.x());
DCHECK(raster_contents_scale_.y());
DCHECK(low_res_raster_contents_scale_);
was_screen_space_transform_animating_ =
draw_properties().screen_space_transform_is_animating;
double current_frame_time_in_seconds =
(layer_tree_impl()->CurrentBeginFrameArgs().frame_time -
base::TimeTicks()).InSecondsF();
UpdateViewportRectForTilePriorityInContentSpace();
// The tiling set can require tiles for activation any of the following
// conditions are true:
// - This layer produced a high-res or non-ideal-res tile last frame.
// - We're in requires high res to draw mode.
// - We're not in smoothness takes priority mode.
// To put different, the tiling set can't require tiles for activation if
// we're in smoothness mode and only used low-res or checkerboard to draw last
// frame and we don't need high res to draw.
//
// The reason for this is that we should be able to activate sooner and get a
// more up to date recording, so we don't run out of recording on the active
// tree.
// A layer must be a drawing layer for it to require tiles for activation.
bool can_require_tiles_for_activation = false;
if (contributes_to_drawn_render_surface()) {
can_require_tiles_for_activation =
!only_used_low_res_last_append_quads_ || RequiresHighResToDraw() ||
!layer_tree_impl()->SmoothnessTakesPriority();
}
static const base::NoDestructor<Occlusion> kEmptyOcclusion;
const Occlusion& occlusion_in_content_space =
layer_tree_impl()->settings().use_occlusion_for_tile_prioritization
? draw_properties().occlusion_in_content_space
: *kEmptyOcclusion;
// Pass |occlusion_in_content_space| for |occlusion_in_layer_space| since
// they are the same space in picture layer, as contents scale is always 1.
bool updated = tilings_->UpdateTilePriorities(
viewport_rect_for_tile_priority_in_content_space_,
ideal_contents_scale_key(), current_frame_time_in_seconds,
occlusion_in_content_space, can_require_tiles_for_activation);
DCHECK_GT(tilings_->num_tilings(), 0u);
SanityCheckTilingState();
return updated;
}
void PictureLayerImpl::UpdateViewportRectForTilePriorityInContentSpace() {
// If visible_layer_rect() is empty or viewport_rect_for_tile_priority is
// set to be different from the device viewport, try to inverse project the
// viewport into layer space and use that. Otherwise just use
// visible_layer_rect().
gfx::Rect visible_rect_in_content_space = visible_layer_rect();
gfx::Rect viewport_rect_for_tile_priority =
layer_tree_impl()->ViewportRectForTilePriority();
if (visible_rect_in_content_space.IsEmpty() ||
layer_tree_impl()->GetDeviceViewport() !=
viewport_rect_for_tile_priority) {
gfx::Transform view_to_layer(gfx::Transform::kSkipInitialization);
if (ScreenSpaceTransform().GetInverse(&view_to_layer)) {
// Transform from view space to content space.
visible_rect_in_content_space = MathUtil::ProjectEnclosingClippedRect(
view_to_layer, viewport_rect_for_tile_priority);
// We have to allow for a viewport that is outside of the layer bounds in
// order to compute tile priorities correctly for offscreen content that
// is going to make it on screen. However, we also have to limit the
// viewport since it can be very large due to screen_space_transforms. As
// a heuristic, we clip to bounds padded by skewport_extrapolation_limit *
// maximum tiling scale, since this should allow sufficient room for
// skewport calculations.
gfx::Rect padded_bounds(bounds());
int padding_amount = layer_tree_impl()
->settings()
.skewport_extrapolation_limit_in_screen_pixels *
MaximumTilingContentsScale();
padded_bounds.Inset(-padding_amount, -padding_amount);
visible_rect_in_content_space =
SafeIntersectRects(visible_rect_in_content_space, padded_bounds);
}
}
viewport_rect_for_tile_priority_in_content_space_ =
visible_rect_in_content_space;
}
PictureLayerImpl* PictureLayerImpl::GetPendingOrActiveTwinLayer() const {
if (!twin_layer_ || !twin_layer_->IsOnActiveOrPendingTree())
return nullptr;
return twin_layer_;
}
void PictureLayerImpl::UpdateRasterSource(
scoped_refptr<RasterSource> raster_source,
Region* new_invalidation,
const PictureLayerTilingSet* pending_set,
const PaintWorkletRecordMap* pending_paint_worklet_records) {
// The bounds and the pile size may differ if the pile wasn't updated (ie.
// PictureLayer::Update didn't happen). In that case the pile will be empty.
DCHECK(raster_source->GetSize().IsEmpty() ||
bounds() == raster_source->GetSize())
<< " bounds " << bounds().ToString() << " pile "
<< raster_source->GetSize().ToString();
// We have an updated recording if the DisplayItemList in the new RasterSource
// is different.
const bool recording_updated =
!raster_source_ || raster_source_->GetDisplayItemList() !=
raster_source->GetDisplayItemList();
// Unregister for all images on the current raster source, if the recording
// was updated.
if (recording_updated) {
UnregisterAnimatedImages();
// When the display list changes, the set of PaintWorklets may also change.
if (pending_paint_worklet_records) {
paint_worklet_records_ = *pending_paint_worklet_records;
} else {
if (raster_source->GetDisplayItemList()) {
SetPaintWorkletInputs(raster_source->GetDisplayItemList()
->discardable_image_map()
.paint_worklet_inputs());
} else {
SetPaintWorkletInputs({});
}
}
// If the MSAA sample count has changed, we need to re-raster the complete
// layer.
if (raster_source_) {
const auto& current_display_item_list =
raster_source_->GetDisplayItemList();
const auto& new_display_item_list = raster_source->GetDisplayItemList();
if (current_display_item_list && new_display_item_list) {
bool needs_full_invalidation =
layer_tree_impl()->GetMSAASampleCountForRaster(
current_display_item_list) !=
layer_tree_impl()->GetMSAASampleCountForRaster(
new_display_item_list);
needs_full_invalidation |=
layer_tree_impl()->GetRasterColorSpace(
current_display_item_list->discardable_image_map()
.content_color_usage()) !=
layer_tree_impl()->GetRasterColorSpace(
new_display_item_list->discardable_image_map()
.content_color_usage());
if (needs_full_invalidation)
new_invalidation->Union(gfx::Rect(raster_source->GetSize()));
}
}
}
// The |raster_source_| is initially null, so have to check for that for the
// first frame.
bool could_have_tilings = CanHaveTilings();
raster_source_.swap(raster_source);
// Register images from the new raster source, if the recording was updated.
// TODO(khushalsagar): UMA the number of animated images in layer?
if (recording_updated)
RegisterAnimatedImages();
// The |new_invalidation| must be cleared before updating tilings since they
// access the invalidation through the PictureLayerTilingClient interface.
invalidation_.Clear();
invalidation_.Swap(new_invalidation);
bool can_have_tilings = CanHaveTilings();
DCHECK(!pending_set ||
can_have_tilings == GetPendingOrActiveTwinLayer()->CanHaveTilings());
// Need to call UpdateTiles again if CanHaveTilings changed.
if (could_have_tilings != can_have_tilings)
layer_tree_impl()->set_needs_update_draw_properties();
if (!can_have_tilings) {
RemoveAllTilings();
return;
}
// We could do this after doing UpdateTiles, which would avoid doing this for
// tilings that are going to disappear on the pending tree (if scale changed).
// But that would also be more complicated, so we just do it here for now.
//
// TODO(crbug.com/843787): If the LayerTreeFrameSink is lost, and we activate,
// this ends up running with the old LayerTreeFrameSink, or possibly with a
// null LayerTreeFrameSink, which can give incorrect results or maybe crash.
if (pending_set) {
tilings_->UpdateTilingsToCurrentRasterSourceForActivation(
raster_source_, pending_set, invalidation_, MinimumContentsScale(),
MaximumContentsScale());
} else {
tilings_->UpdateTilingsToCurrentRasterSourceForCommit(
raster_source_, invalidation_, MinimumContentsScale(),
MaximumContentsScale());
// We're in a commit, make sure to update the state of the checker image
// tracker with the new async attribute data.
layer_tree_impl()->UpdateImageDecodingHints(
raster_source_->TakeDecodingModeMap());
}
}
void PictureLayerImpl::UpdateCanUseLCDText(
bool raster_translation_aligns_pixels) {
// If we have pending/active trees, the active tree doesn't update lcd text
// status but copies it from the pending tree.
if (!layer_tree_impl()->IsSyncTree())
return;
lcd_text_disallowed_reason_ =
ComputeLCDTextDisallowedReason(raster_translation_aligns_pixels);
}
bool PictureLayerImpl::HasWillChangeTransformHint() const {
TransformNode* transform_node =
GetTransformTree().Node(transform_tree_index());
return transform_node && transform_node->will_change_transform;
}
LCDTextDisallowedReason PictureLayerImpl::ComputeLCDTextDisallowedReason(
bool raster_translation_aligns_pixels) const {
// No need to use LCD text if there is no text.
if (!raster_source_ || !raster_source_->GetDisplayItemList() ||
!raster_source_->GetDisplayItemList()->has_draw_text_ops()) {
return LCDTextDisallowedReason::kNoText;
}
if (layer_tree_impl()->settings().layers_always_allowed_lcd_text)
return LCDTextDisallowedReason::kNone;
if (!layer_tree_impl()->settings().can_use_lcd_text)
return LCDTextDisallowedReason::kSetting;
if (!contents_opaque_for_text()) {
if (SkColorGetA(background_color()) != SK_AlphaOPAQUE)
return LCDTextDisallowedReason::kBackgroundColorNotOpaque;
return LCDTextDisallowedReason::kContentsNotOpaque;
}
// If raster translation aligns pixels, we can ignore fractional layer offset
// and transform for LCD text.
if (!raster_translation_aligns_pixels) {
if (static_cast<int>(offset_to_transform_parent().x()) !=
offset_to_transform_parent().x())
return LCDTextDisallowedReason::kNonIntegralXOffset;
if (static_cast<int>(offset_to_transform_parent().y()) !=
offset_to_transform_parent().y())
return LCDTextDisallowedReason::kNonIntegralYOffset;
return LCDTextDisallowedReason::kNonIntegralTranslation;
}
TransformNode* transform_node =
GetTransformTree().Node(transform_tree_index());
if (transform_node->node_or_ancestors_will_change_transform)
return LCDTextDisallowedReason::kWillChangeTransform;
if (screen_space_transform_is_animating())
return LCDTextDisallowedReason::kTransformAnimation;
EffectNode* effect_node = GetEffectTree().Node(effect_tree_index());
if (effect_node->node_or_ancestor_has_filters ||
effect_node->affected_by_backdrop_filter)
return LCDTextDisallowedReason::kPixelOrColorEffect;
return LCDTextDisallowedReason::kNone;
}
LCDTextDisallowedReason
PictureLayerImpl::ComputeLCDTextDisallowedReasonForTesting() const {
gfx::Vector2dF raster_translation;
return ComputeLCDTextDisallowedReason(
CalculateRasterTranslation(raster_translation));
}
void PictureLayerImpl::NotifyTileStateChanged(const Tile* tile) {
if (layer_tree_impl()->IsActiveTree())
damage_rect_.Union(tile->enclosing_layer_rect());
if (tile->draw_info().NeedsRaster()) {
PictureLayerTiling* tiling =
tilings_->FindTilingWithScaleKey(tile->contents_scale_key());
if (tiling)
tiling->set_all_tiles_done(false);
}
}
gfx::Rect PictureLayerImpl::GetDamageRect() const {
return damage_rect_;
}
void PictureLayerImpl::ResetChangeTracking() {
LayerImpl::ResetChangeTracking();
damage_rect_.SetRect(0, 0, 0, 0);
}
void PictureLayerImpl::DidBeginTracing() {
raster_source_->DidBeginTracing();
}
void PictureLayerImpl::ReleaseResources() {
tilings_->ReleaseAllResources();
ResetRasterScale();
}
void PictureLayerImpl::ReleaseTileResources() {
// All resources are tile resources.
ReleaseResources();
}
void PictureLayerImpl::RecreateTileResources() {
// Recreate tilings with new settings, since some of those might change when
// we release resources.
tilings_ = CreatePictureLayerTilingSet();
}
Region PictureLayerImpl::GetInvalidationRegionForDebugging() {
// |invalidation_| gives the invalidation contained in the source frame, but
// is not cleared after drawing from the layer. However, update_rect() is
// cleared once the invalidation is drawn, which is useful for debugging
// visualizations. This method intersects the two to give a more exact
// representation of what was invalidated that is cleared after drawing.
return IntersectRegions(invalidation_, update_rect());
}
std::unique_ptr<Tile> PictureLayerImpl::CreateTile(
const Tile::CreateInfo& info) {
int flags = 0;
// We don't handle solid color single texture masks for backdrop filters,
// so we shouldn't bother analyzing those.
// Otherwise, always analyze to maximize memory savings.
if (!is_backdrop_filter_mask_)
flags = Tile::USE_PICTURE_ANALYSIS;
if (contents_opaque())
flags |= Tile::IS_OPAQUE;
return layer_tree_impl()->tile_manager()->CreateTile(
info, id(), layer_tree_impl()->source_frame_number(), flags);
}
const Region* PictureLayerImpl::GetPendingInvalidation() {
if (layer_tree_impl()->IsPendingTree())
return &invalidation_;
if (layer_tree_impl()->IsRecycleTree())
return nullptr;
DCHECK(layer_tree_impl()->IsActiveTree());
if (PictureLayerImpl* twin_layer = GetPendingOrActiveTwinLayer())
return &twin_layer->invalidation_;
return nullptr;
}
const PictureLayerTiling* PictureLayerImpl::GetPendingOrActiveTwinTiling(
const PictureLayerTiling* tiling) const {
PictureLayerImpl* twin_layer = GetPendingOrActiveTwinLayer();
if (!twin_layer)
return nullptr;
const PictureLayerTiling* twin_tiling =
twin_layer->tilings_->FindTilingWithScaleKey(
tiling->contents_scale_key());
if (twin_tiling &&
twin_tiling->raster_transform() == tiling->raster_transform())
return twin_tiling;
return nullptr;
}
bool PictureLayerImpl::RequiresHighResToDraw() const {
return layer_tree_impl()->RequiresHighResToDraw();
}
const PaintWorkletRecordMap& PictureLayerImpl::GetPaintWorkletRecords() const {
return paint_worklet_records_;
}
bool PictureLayerImpl::IsDirectlyCompositedImage() const {
return directly_composited_image_size_.has_value();
}
gfx::Rect PictureLayerImpl::GetEnclosingRectInTargetSpace() const {
return GetScaledEnclosingRectInTargetSpace(MaximumTilingContentsScale());
}
bool PictureLayerImpl::ShouldAnimate(PaintImage::Id paint_image_id) const {
// If we are registered with the animation controller, which queries whether
// the image should be animated, then we must have recordings with this image.
DCHECK(raster_source_);
DCHECK(raster_source_->GetDisplayItemList());
DCHECK(
!raster_source_->GetDisplayItemList()->discardable_image_map().empty());
// Only animate images for layers which HasValidTilePriorities. This check is
// important for 2 reasons:
// 1) It avoids doing additional work for layers we don't plan to rasterize
// and/or draw. The updated state will be pulled by the animation system
// if the draw properties change.
// 2) It eliminates considering layers on the recycle tree. Once the pending
// tree is activated, the layers on the recycle tree remain registered as
// animation drivers, but should not drive animations since they don't have
// updated draw properties.
//
// Additionally only animate images which are on-screen, animations are
// paused once they are not visible.
if (!HasValidTilePriorities())
return false;
const auto& rects = raster_source_->GetDisplayItemList()
->discardable_image_map()
.GetRectsForImage(paint_image_id);
for (const auto& r : rects.container()) {
if (r.Intersects(visible_layer_rect()))
return true;
}
return false;
}
gfx::Size PictureLayerImpl::CalculateTileSize(const gfx::Size& content_bounds) {
content_bounds_ = content_bounds;
return tile_size_calculator_.CalculateTileSize();
}
void PictureLayerImpl::GetContentsResourceId(
viz::ResourceId* resource_id,
gfx::Size* resource_size,
gfx::SizeF* resource_uv_size) const {
// We need contents resource for backdrop filter masks only.
if (!is_backdrop_filter_mask()) {
*resource_id = viz::kInvalidResourceId;
return;
}
// The bounds and the pile size may differ if the pile wasn't updated (ie.
// PictureLayer::Update didn't happen). In that case the pile will be empty.
DCHECK(raster_source_->GetSize().IsEmpty() ||
bounds() == raster_source_->GetSize())
<< " bounds " << bounds().ToString() << " pile "
<< raster_source_->GetSize().ToString();
float dest_scale = MaximumTilingContentsScale();
gfx::Rect content_rect =
gfx::ScaleToEnclosingRect(gfx::Rect(bounds()), dest_scale);
PictureLayerTilingSet::CoverageIterator iter(
tilings_.get(), dest_scale, content_rect, ideal_contents_scale_key());
// Mask resource not ready yet.
if (!iter || !*iter) {
*resource_id = viz::kInvalidResourceId;
return;
}
// Masks only supported if they fit on exactly one tile.
DCHECK(iter.geometry_rect() == content_rect)
<< "iter rect " << iter.geometry_rect().ToString() << " content rect "
<< content_rect.ToString();
const TileDrawInfo& draw_info = iter->draw_info();
if (!draw_info.IsReadyToDraw() ||
draw_info.mode() != TileDrawInfo::RESOURCE_MODE) {
*resource_id = viz::kInvalidResourceId;
return;
}
*resource_id = draw_info.resource_id_for_export();
*resource_size = draw_info.resource_size();
// |resource_uv_size| represents the range of UV coordinates that map to the
// content being drawn. Typically, we draw to the entire texture, so these
// coordinates are (1.0f, 1.0f). However, if we are rasterizing to an
// over-large texture, this size will be smaller, mapping to the subset of the
// texture being used.
gfx::SizeF requested_tile_size =
gfx::SizeF(iter->tiling()->tiling_data()->tiling_size());
DCHECK_LE(requested_tile_size.width(), draw_info.resource_size().width());
DCHECK_LE(requested_tile_size.height(), draw_info.resource_size().height());
*resource_uv_size = gfx::SizeF(
requested_tile_size.width() / draw_info.resource_size().width(),
requested_tile_size.height() / draw_info.resource_size().height());
}
void PictureLayerImpl::SetNearestNeighbor(bool nearest_neighbor) {
if (nearest_neighbor_ == nearest_neighbor)
return;
nearest_neighbor_ = nearest_neighbor;
NoteLayerPropertyChanged();
}
void PictureLayerImpl::SetDirectlyCompositedImageSize(
base::Optional<gfx::Size> size) {
if (directly_composited_image_size_ == size)
return;
directly_composited_image_size_ = size;
NoteLayerPropertyChanged();
}
bool PictureLayerImpl::ShouldDirectlyCompositeImage(float raster_scale) const {
// Even if there are minor rendering differences, we want to apply directly
// compositing images in cases where doing so is going to save memory.
if (raster_scale < 0.1f)
return true;
#if defined(OS_FUCHSIA)
// Always downscale images on low-end devices to save memory. This is a
// temporary fix to work around crbug.com/1161327 .
// TODO(crbug.com/1161327): Implement proper solution that works on all
// devices.
if (base::SysInfo::IsLowEndDevice() && raster_scale > 1.0)
return false;
#endif // defined(OS_FUCHSIA)
// If the results of scaling the bounds by the expected raster scale
// would end up with a content rect whose width/height are more than one
// pixel different from the layer bounds, don't directly composite the image
// to avoid incorrect rendering.
gfx::SizeF layer_bounds(bounds());
gfx::RectF scaled_bounds_rect(layer_bounds);
scaled_bounds_rect.Scale(raster_scale);
// Take the scaled bounds, get the enclosing rect then scale it back down -
// this is the same set of operations that will happen when using the tiling
// at that raster scale.
gfx::RectF content_rect(gfx::ToEnclosingRect(scaled_bounds_rect));
content_rect.Scale(1 / raster_scale);
return std::abs(layer_bounds.width() - content_rect.width()) < 1.f &&
std::abs(layer_bounds.height() - content_rect.height()) < 1.f;
}
float PictureLayerImpl::GetDefaultDirectlyCompositedImageRasterScale() const {
DCHECK(directly_composited_image_size_.has_value());
float x = static_cast<float>(directly_composited_image_size_->width()) /
bounds().width();
float y = static_cast<float>(directly_composited_image_size_->height()) /
bounds().height();
return GetPreferredRasterScale(gfx::Vector2dF(x, y));
}
float PictureLayerImpl::CalculateDirectlyCompositedImageRasterScale() const {
float default_raster_scale = GetDefaultDirectlyCompositedImageRasterScale();
bool default_raster_scale_changed =
default_raster_scale != directly_composited_image_initial_raster_scale_;
// If the default raster scale didn't change, we will calculate based on the
// previous raster source scale. The calculation may change based on updated
// ideal source scale.
float adjusted_raster_scale = default_raster_scale_changed
? default_raster_scale
: raster_source_scale_key();
// We never want a raster scale larger than the default, since that uses more
// memory but can't result it better quality (upscaling will happen in the
// display compositor instead).
float max_scale = std::max(default_raster_scale, MinimumContentsScale());
float min_scale = MinimumContentsScale();
float clamped_ideal_source_scale =
base::ClampToRange(ideal_source_scale_key(), min_scale, max_scale);
while (adjusted_raster_scale < clamped_ideal_source_scale)
adjusted_raster_scale *= 2.f;
while (adjusted_raster_scale > 4 * clamped_ideal_source_scale)
adjusted_raster_scale /= 2.f;
adjusted_raster_scale =
base::ClampToRange(adjusted_raster_scale, min_scale, max_scale);
return adjusted_raster_scale;
}
PictureLayerTiling* PictureLayerImpl::AddTiling(
const gfx::AxisTransform2d& raster_transform) {
DCHECK(CanHaveTilings());
DCHECK_GE(raster_transform.scale().x(), MinimumContentsScale());
DCHECK_GE(raster_transform.scale().y(), MinimumContentsScale());
DCHECK_LE(raster_transform.scale().x(), MaximumContentsScale());
DCHECK_LE(raster_transform.scale().y(), MaximumContentsScale());
DCHECK(raster_source_->HasRecordings());
bool tiling_can_use_lcd_text =
can_use_lcd_text() && raster_transform.scale() == raster_contents_scale_;
return tilings_->AddTiling(raster_transform, raster_source_,
tiling_can_use_lcd_text);
}
void PictureLayerImpl::RemoveAllTilings() {
tilings_->RemoveAllTilings();
// If there are no tilings, then raster scales are no longer meaningful.
ResetRasterScale();
}
bool PictureLayerImpl::CanRecreateHighResTilingForLCDTextAndRasterTranslation(
const PictureLayerTiling& high_res) const {
// This is for the sync tree only to avoid flickering.
if (!layer_tree_impl()->IsSyncTree())
return false;
// We can recreate the tiling if we would invalidate all of its tiles.
if (high_res.may_contain_low_resolution_tiles())
return true;
// Keep the non-ideal raster translation unchanged for transform animations
// to avoid re-rasterization during animation.
if (draw_properties().screen_space_transform_is_animating ||
HasWillChangeTransformHint())
return false;
// Also avoid re-rasterization during pinch-zoom.
if (layer_tree_impl()->PinchGestureActive())
return false;
// Keep the current LCD text and raster translation if there is no text.
if (lcd_text_disallowed_reason_ == LCDTextDisallowedReason::kNoText)
return false;
return true;
}
void PictureLayerImpl::UpdateTilingsForRasterScaleAndTranslation(
bool has_adjusted_raster_scale) {
PictureLayerTiling* high_res =
tilings_->FindTilingWithScaleKey(raster_contents_scale_key());
gfx::Vector2dF raster_translation;
bool raster_translation_aligns_pixels =
CalculateRasterTranslation(raster_translation);
UpdateCanUseLCDText(raster_translation_aligns_pixels);
if (high_res) {
bool raster_transform_is_not_ideal =
high_res->raster_transform().scale() != raster_contents_scale_ ||
high_res->raster_transform().translation() != raster_translation;
bool can_use_lcd_text_changed =
high_res->can_use_lcd_text() != can_use_lcd_text();
bool should_recreate_high_res =
(raster_transform_is_not_ideal || can_use_lcd_text_changed) &&
CanRecreateHighResTilingForLCDTextAndRasterTranslation(*high_res);
if (should_recreate_high_res) {
tilings_->Remove(high_res);
high_res = nullptr;
} else if (!has_adjusted_raster_scale) {
// Nothing changed, no need to update tilings.
DCHECK_EQ(HIGH_RESOLUTION, high_res->resolution());
SanityCheckTilingState();
return;
}
}
// Reset all resolution enums on tilings, we'll be setting new values in this
// function.
tilings_->MarkAllTilingsNonIdeal();
if (!high_res) {
// We always need a high res tiling, so create one if it doesn't exist.
high_res = AddTiling(
gfx::AxisTransform2d(raster_contents_scale_, raster_translation));
} else if (high_res->may_contain_low_resolution_tiles()) {
// If the tiling we find here was LOW_RESOLUTION previously, it may not be
// fully rastered, so destroy the old tiles.
high_res->Reset();
// Reset the flag now that we'll make it high res, it will have fully
// rastered content.
high_res->reset_may_contain_low_resolution_tiles();
}
high_res->set_resolution(HIGH_RESOLUTION);
if (layer_tree_impl()->IsPendingTree() ||
(layer_tree_impl()->settings().commit_to_active_tree &&
directly_composited_image_size_.has_value())) {
// On the pending tree, drop any tilings that are non-ideal since we don't
// need them to activate anyway.
// For DirectlyCompositedImages, if we recomputed a new raster scale, we
// should drop the non-ideal ones if we're committing to the active tree.
// Otherwise a non-ideal scale that is _larger_ than the HIGH_RESOLUTION
// tile will be used as the coverage scale, and we'll produce a slightly
// different rendering. We don't drop the tilings on the active tree if
// we're not committing to the active tree to prevent checkerboarding.
tilings_->RemoveNonIdealTilings();
}
SanityCheckTilingState();
}
bool PictureLayerImpl::ShouldAdjustRasterScale() const {
if (!raster_contents_scale_.x() || !raster_contents_scale_.y())
return true;
if (directly_composited_image_size_) {
// If we have a directly composited image size, but previous raster scale
// calculations did not set an initial raster scale, we must recalcluate.
if (directly_composited_image_initial_raster_scale_ == 0)
return true;
float default_raster_scale = GetDefaultDirectlyCompositedImageRasterScale();
// First check to see if we need to adjust based on ideal_source_scale_
// changing (i.e. scale transform has been modified). These limits exist
// so that we don't raster at the intrinsic image size if the layer will
// be scaled down more than 4x ideal. This saves memory without sacrificing
// noticeable quality. We'll also bump the scale back up in the case where
// the ideal scale is increased.
float max_scale = std::max(default_raster_scale, MinimumContentsScale());
if (raster_source_scale_key() <
std::min(ideal_source_scale_key(), max_scale))
return true;
if (raster_source_scale_key() > 4 * ideal_source_scale_key())
return true;
// If the default raster scale changed, that means the bounds or image size
// changed. We should recalculate in order to raster at the intrinsic image
// size. Note that this is not a comparison of the used raster_source_scale_
// and desired because of the adjustments in RecalculateRasterScales.
bool default_raster_scale_changed =
default_raster_scale != directly_composited_image_initial_raster_scale_;
return default_raster_scale_changed;
}
if (was_screen_space_transform_animating_ !=
draw_properties().screen_space_transform_is_animating) {
// Skip adjusting raster scale when animations finish if we have a
// will-change: transform hint to preserve maximum resolution tiles
// needed.
if (draw_properties().screen_space_transform_is_animating ||
!HasWillChangeTransformHint())
return true;
}
bool is_pinching = layer_tree_impl()->PinchGestureActive();
if (is_pinching && raster_page_scale_) {
// We change our raster scale when it is:
// - Higher than ideal (need a lower-res tiling available)
// - Too far from ideal (need a higher-res tiling available)
float ratio = ideal_page_scale_ / raster_page_scale_;
if (raster_page_scale_ > ideal_page_scale_ ||
ratio > kMaxScaleRatioDuringPinch)
return true;
}
if (!is_pinching) {
// When not pinching, match the ideal page scale factor.
if (raster_page_scale_ != ideal_page_scale_)
return true;
}
// Always match the ideal device scale factor.
if (raster_device_scale_ != ideal_device_scale_)
return true;
float max_scale = MaximumContentsScale();
if (raster_contents_scale_.x() > max_scale ||
raster_contents_scale_.y() > max_scale)
return true;
float min_scale = MinimumContentsScale();
if (raster_contents_scale_.x() < min_scale ||
raster_contents_scale_.y() < min_scale)
return true;
// Avoid frequent raster scale changes if we have an animating transform.
if (draw_properties().screen_space_transform_is_animating) {
// Except when the device viewport rect has changed because the raster scale
// may depend on the rect.
if (layer_tree_impl()->device_viewport_rect_changed())
return true;
// Or when the raster scale is not affected by invalid scale and is too
// small compared to the ideal scale.
if (ideal_contents_scale_.x() >
raster_contents_scale_.x() *
kRatioToAdjustRasterScaleForTransformAnimation ||
ideal_contents_scale_.y() >
raster_contents_scale_.y() *
kRatioToAdjustRasterScaleForTransformAnimation) {
auto* property_trees = layer_tree_impl()->property_trees();
int transform_id = transform_tree_index();
if (property_trees->AnimationScaleCacheIsInvalid(transform_id) ||
!property_trees->AnimationAffectedByInvalidScale(transform_id)) {
return true;
}
}
return false;
}
// Don't change the raster scale if the raster scale is already ideal.
if (raster_source_scale_ == ideal_source_scale_)
return false;
// Don't update will-change: transform layers if the raster contents scale is
// bigger than the minimum scale.
if (HasWillChangeTransformHint()) {
float min_raster_scale = MinimumRasterContentsScaleForWillChangeTransform();
if (raster_contents_scale_.x() >= min_raster_scale &&
raster_contents_scale_.y() >= min_raster_scale)
return false;
}
// Match the raster scale in all other cases.
return true;
}
void PictureLayerImpl::AddLowResolutionTilingIfNeeded() {
DCHECK(layer_tree_impl()->IsActiveTree());
if (!layer_tree_impl()->create_low_res_tiling())
return;
// We should have a high resolution tiling at raster_contents_scale, so if the
// low res one is the same then we shouldn't try to override this tiling by
// marking it as a low res.
if (raster_contents_scale_key() == low_res_raster_contents_scale_)
return;
PictureLayerTiling* low_res =
tilings_->FindTilingWithScaleKey(low_res_raster_contents_scale_);
DCHECK(!low_res || low_res->resolution() != HIGH_RESOLUTION);
// Only create new low res tilings when the transform is static. This
// prevents wastefully creating a paired low res tiling for every new high
// res tiling during a pinch or a CSS animation.
bool is_pinching = layer_tree_impl()->PinchGestureActive();
bool is_animating = draw_properties().screen_space_transform_is_animating;
if (!is_pinching && !is_animating) {
if (!low_res)
low_res = AddTiling(gfx::AxisTransform2d(low_res_raster_contents_scale_,
gfx::Vector2dF()));
low_res->set_resolution(LOW_RESOLUTION);
}
}
void PictureLayerImpl::RecalculateRasterScales() {
if (directly_composited_image_size_) {
// TODO(crbug.com/1196414): Support 2D scales in directly composited images.
float used_raster_scale = CalculateDirectlyCompositedImageRasterScale();
if (ShouldDirectlyCompositeImage(used_raster_scale)) {
directly_composited_image_initial_raster_scale_ =
GetDefaultDirectlyCompositedImageRasterScale();
raster_source_scale_ =
gfx::Vector2dF(used_raster_scale, used_raster_scale);
raster_page_scale_ = 1.f;
raster_device_scale_ = 1.f;
raster_contents_scale_ = raster_source_scale_;
low_res_raster_contents_scale_ = used_raster_scale;
return;
}
// If we should not directly composite this image, reset values and fall
// back to normal raster scale calculations below.
directly_composited_image_size_ = base::nullopt;
directly_composited_image_initial_raster_scale_ = 0.f;
}
gfx::Vector2dF old_raster_contents_scale = raster_contents_scale_;
float old_raster_page_scale = raster_page_scale_;
// The raster scale if previous tilings should be preserved.
gfx::Vector2dF preserved_raster_contents_scale = old_raster_contents_scale;
raster_device_scale_ = ideal_device_scale_;
raster_page_scale_ = ideal_page_scale_;
raster_source_scale_ = ideal_source_scale_;
raster_contents_scale_ = ideal_contents_scale_;
// During pinch we completely ignore the current ideal scale, and just use
// a multiple of the previous scale.
bool is_pinching = layer_tree_impl()->PinchGestureActive();
if (is_pinching && !old_raster_contents_scale.IsZero()) {
// See ShouldAdjustRasterScale:
// - When zooming out, preemptively create new tiling at lower resolution.
// - When zooming in, approximate ideal using multiple of kMaxScaleRatio.
bool zooming_out = old_raster_page_scale > ideal_page_scale_;
float desired_contents_scale =
std::max(old_raster_contents_scale.x(), old_raster_contents_scale.y());
float ideal_scale = ideal_contents_scale_key();
if (zooming_out) {
while (desired_contents_scale > ideal_scale)
desired_contents_scale /= kMaxScaleRatioDuringPinch;
} else {
while (desired_contents_scale < ideal_scale)
desired_contents_scale *= kMaxScaleRatioDuringPinch;
}
if (const auto* snapped_to_tiling = tilings_->FindTilingWithNearestScaleKey(
desired_contents_scale, kSnapToExistingTilingRatio)) {
raster_contents_scale_ = snapped_to_tiling->raster_transform().scale();
} else {
raster_contents_scale_ = old_raster_contents_scale;
raster_contents_scale_.Scale(desired_contents_scale /
raster_contents_scale_key());
}
preserved_raster_contents_scale = raster_contents_scale_;
raster_page_scale_ =
std::max(raster_contents_scale_.x() / raster_source_scale_.x(),
raster_contents_scale_.y() / raster_source_scale_.y()) /
raster_device_scale_;
}
if (draw_properties().screen_space_transform_is_animating)
AdjustRasterScaleForTransformAnimation(preserved_raster_contents_scale);
if (HasWillChangeTransformHint()) {
float min_scale = MinimumRasterContentsScaleForWillChangeTransform();
raster_contents_scale_.SetToMax(gfx::Vector2dF(min_scale, min_scale));
}
float min_scale = MinimumContentsScale();
float max_scale = MaximumContentsScale();
raster_contents_scale_.SetToMax(gfx::Vector2dF(min_scale, min_scale));
raster_contents_scale_.SetToMin(gfx::Vector2dF(max_scale, max_scale));
DCHECK_GE(raster_contents_scale_.x(), min_scale);
DCHECK_GE(raster_contents_scale_.y(), min_scale);
DCHECK_LE(raster_contents_scale_.x(), max_scale);
DCHECK_LE(raster_contents_scale_.y(), max_scale);
// If this layer would create zero or one tiles at this content scale,
// don't create a low res tiling.
gfx::Size raster_bounds = gfx::ScaleToCeiledSize(raster_source_->GetSize(),
raster_contents_scale_.x(),
raster_contents_scale_.y());
gfx::Size tile_size = CalculateTileSize(raster_bounds);
bool tile_covers_bounds = tile_size.width() >= raster_bounds.width() &&
tile_size.height() >= raster_bounds.height();
if (tile_size.IsEmpty() || tile_covers_bounds) {
low_res_raster_contents_scale_ = raster_contents_scale_key();
return;
}
float low_res_factor =
layer_tree_impl()->settings().low_res_contents_scale_factor;
low_res_raster_contents_scale_ =
std::max(raster_contents_scale_key() * low_res_factor, min_scale);
DCHECK_LE(low_res_raster_contents_scale_, raster_contents_scale_key());
DCHECK_GE(low_res_raster_contents_scale_, min_scale);
DCHECK_LE(low_res_raster_contents_scale_, max_scale);
}
void PictureLayerImpl::AdjustRasterScaleForTransformAnimation(
const gfx::Vector2dF& preserved_raster_contents_scale) {
DCHECK(draw_properties().screen_space_transform_is_animating);
// TODO(crbug.com/1196414): Support 2D scales in animations.
float maximum_animation_scale =
layer_tree_impl()->property_trees()->MaximumAnimationToScreenScale(
transform_tree_index());
float scale = std::max(raster_contents_scale_key(), maximum_animation_scale);
// However we want to avoid excessive memory use. Choose a scale at which this
// layer's rastered content is not larger than the viewport.
gfx::Size viewport = layer_tree_impl()->GetDeviceViewport().size();
// To avoid too small scale in a small viewport.
constexpr int kMinViewportDimension = 500;
float max_viewport_dimension =
std::max({viewport.width(), viewport.height(), kMinViewportDimension});
DCHECK(max_viewport_dimension);
// Use square to compensate for viewports with different aspect ratios.
float squared_viewport_area = max_viewport_dimension * max_viewport_dimension;
gfx::SizeF raster_source_size(raster_source_->GetSize());
// Clamp raster_source_size by max_viewport_dimension to avoid too small
// scale for huge layers for which the far from viewport area won't be
// rasterized and out of viewport area is rasterized in low priority.
gfx::SizeF max_visible_bounds(
std::min(raster_source_size.width(), max_viewport_dimension),
std::min(raster_source_size.height(), max_viewport_dimension));
gfx::SizeF max_visible_bounds_at_max_scale =
gfx::ScaleSize(max_visible_bounds, scale);
float maximum_area = max_visible_bounds_at_max_scale.width() *
max_visible_bounds_at_max_scale.height();
// Clamp the scale to make the rastered content not larger than the viewport.
if (UNLIKELY(maximum_area > squared_viewport_area))
scale /= std::sqrt(maximum_area / squared_viewport_area);
raster_contents_scale_ = gfx::Vector2dF(scale, scale);
if (HasWillChangeTransformHint()) {
// If we have a will-change: transform hint, do not shrink the content
// raster scale, otherwise we will end up throwing away larger tiles we
// may need again.
raster_contents_scale_.SetToMax(preserved_raster_contents_scale);
}
}
void PictureLayerImpl::CleanUpTilingsOnActiveLayer(
const std::vector<PictureLayerTiling*>& used_tilings) {
DCHECK(layer_tree_impl()->IsActiveTree());
if (tilings_->num_tilings() == 0)
return;
float min_acceptable_high_res_scale =
std::min(raster_contents_scale_key(), ideal_contents_scale_key());
float max_acceptable_high_res_scale =
std::max(raster_contents_scale_key(), ideal_contents_scale_key());
PictureLayerImpl* twin = GetPendingOrActiveTwinLayer();
if (twin && twin->CanHaveTilings()) {
min_acceptable_high_res_scale = std::min(
{min_acceptable_high_res_scale, twin->raster_contents_scale_key(),
twin->ideal_contents_scale_key()});
max_acceptable_high_res_scale = std::max(
{max_acceptable_high_res_scale, twin->raster_contents_scale_key(),
twin->ideal_contents_scale_key()});
}
PictureLayerTilingSet* twin_set = twin ? twin->tilings_.get() : nullptr;
tilings_->CleanUpTilings(min_acceptable_high_res_scale,
max_acceptable_high_res_scale, used_tilings,
twin_set);
}
float PictureLayerImpl::MinimumRasterContentsScaleForWillChangeTransform()
const {
DCHECK(HasWillChangeTransformHint());
float native_scale = ideal_device_scale_ * ideal_page_scale_;
float ideal_scale = ideal_contents_scale_key();
// Clamp will-change: transform layers to be at least the native scale,
// unless the scale is too small to avoid too many tiles using too much tile
// memory.
if (ideal_scale < native_scale * kMinScaleRatioForWillChangeTransform) {
// Don't let the scale too small compared to the ideal scale.
return ideal_scale * kMinScaleRatioForWillChangeTransform;
}
return native_scale;
}
bool PictureLayerImpl::CalculateRasterTranslation(
gfx::Vector2dF& raster_translation) const {
// If this setting is set, the client (e.g. the Chromium UI) is sure that it
// can almost always align raster pixels to physical pixels, and doesn't care
// about temporary misalignment, so don't bother raster translation.
if (layer_tree_impl()->settings().layers_always_allowed_lcd_text)
return true;
// No need to use raster translation if there is no text.
if (!raster_source_ || !raster_source_->GetDisplayItemList() ||
!raster_source_->GetDisplayItemList()->has_draw_text_ops()) {
return false;
}
const gfx::Transform& screen_transform = ScreenSpaceTransform();
gfx::Transform draw_transform = DrawTransform();
if (!screen_transform.IsScaleOrTranslation() ||
!draw_transform.IsScaleOrTranslation()) {
return false;
}
// It is only useful to align the content space to the target space if their
// relative pixel ratio is some small rational number. Currently we only
// align if the relative pixel ratio is 1:1 (i.e. the scale components of
// both the screen transform and the draw transform are approximately the same
// as |raster_contents_scale_|). Good match if the maximum alignment error on
// a layer of size 10000px does not exceed 0.001px.
static constexpr float kPixelErrorThreshold = 0.001f;
static constexpr float kScaleErrorThreshold = kPixelErrorThreshold / 10000;
auto is_raster_scale = [this](const SkMatrix44& matrix) -> bool {
// The matrix has the X scale at (0,0), and the Y scale at (1,1).
return std::abs(matrix.getFloat(0, 0) - raster_contents_scale_.x()) <=
kScaleErrorThreshold &&
std::abs(matrix.getFloat(1, 1) - raster_contents_scale_.y()) <=
kScaleErrorThreshold;
};
if (!is_raster_scale(screen_transform.matrix()) ||
!is_raster_scale(draw_transform.matrix())) {
return false;
}
// Extract the fractional part of layer origin in the screen space and in the
// target space.
auto fraction = [](float f) -> float { return f - floorf(f); };
float screen_x_fraction = fraction(screen_transform.matrix().getFloat(0, 3));
float screen_y_fraction = fraction(screen_transform.matrix().getFloat(1, 3));
float target_x_fraction = fraction(draw_transform.matrix().getFloat(0, 3));
float target_y_fraction = fraction(draw_transform.matrix().getFloat(1, 3));
// If the origin is different in the screen space and in the target space,
// it means the render target is not aligned to physical pixels, and the
// text content will be blurry regardless of raster translation.
if (std::abs(screen_x_fraction - target_x_fraction) > kPixelErrorThreshold ||
std::abs(screen_y_fraction - target_y_fraction) > kPixelErrorThreshold) {
return false;
}
raster_translation = gfx::Vector2dF(target_x_fraction, target_y_fraction);
return true;
}
float PictureLayerImpl::MinimumContentsScale() const {
// If the contents scale is less than 1 / width (also for height),
// then it will end up having less than one pixel of content in that
// dimension. Bump the minimum contents scale up in this case to prevent
// this from happening.
int min_dimension = std::min(raster_source_->GetSize().width(),
raster_source_->GetSize().height());
return min_dimension ? 1.f / min_dimension : 1.f;
}
float PictureLayerImpl::MaximumContentsScale() const {
if (bounds().IsEmpty())
return 0;
// When mask tiling is disabled or the mask is single textured, masks can not
// have tilings that would become larger than the max_texture_size since they
// use a single tile for the entire tiling. Other layers can have tilings such
// that dimension * scale does not overflow.
float max_dimension = static_cast<float>(
is_backdrop_filter_mask_ ? layer_tree_impl()->max_texture_size()
: std::numeric_limits<int>::max());
int higher_dimension = std::max(bounds().width(), bounds().height());
float max_scale = max_dimension / higher_dimension;
// We require that multiplying the layer size by the contents scale and
// ceiling produces a value <= |max_dimension|. Because for large layer
// sizes floating point ambiguity may crop up, making the result larger or
// smaller than expected, we use a slightly smaller floating point value for
// the scale, to help ensure that the resulting content bounds will never end
// up larger than |max_dimension|.
return nextafterf(max_scale, 0.f);
}
void PictureLayerImpl::ResetRasterScale() {
raster_page_scale_ = 0.f;
raster_device_scale_ = 0.f;
raster_source_scale_ = gfx::Vector2dF(0.f, 0.f);
raster_contents_scale_ = gfx::Vector2dF(0.f, 0.f);
low_res_raster_contents_scale_ = 0.f;
directly_composited_image_initial_raster_scale_ = 0.f;
}
bool PictureLayerImpl::CanHaveTilings() const {
if (!raster_source_)
return false;
if (raster_source_->IsSolidColor())
return false;
if (!DrawsContent())
return false;
if (!raster_source_->HasRecordings())
return false;
// If the |raster_source_| has a recording it should have non-empty bounds.
DCHECK(!raster_source_->GetSize().IsEmpty());
if (MaximumContentsScale() < MinimumContentsScale())
return false;
return true;
}
void PictureLayerImpl::SanityCheckTilingState() const {
#if DCHECK_IS_ON()
if (!CanHaveTilings()) {
DCHECK_EQ(0u, tilings_->num_tilings());
return;
}
if (tilings_->num_tilings() == 0)
return;
// We should only have one high res tiling.
DCHECK_EQ(1, tilings_->NumHighResTilings());
#endif
}
float PictureLayerImpl::MaximumTilingContentsScale() const {
float max_contents_scale = tilings_->GetMaximumContentsScale();
return std::max(max_contents_scale, MinimumContentsScale());
}
std::unique_ptr<PictureLayerTilingSet>
PictureLayerImpl::CreatePictureLayerTilingSet() {
const LayerTreeSettings& settings = layer_tree_impl()->settings();
return PictureLayerTilingSet::Create(
IsActive() ? ACTIVE_TREE : PENDING_TREE, this,
settings.tiling_interest_area_padding,
layer_tree_impl()->use_gpu_rasterization()
? settings.gpu_rasterization_skewport_target_time_in_seconds
: settings.skewport_target_time_in_seconds,
settings.skewport_extrapolation_limit_in_screen_pixels,
settings.max_preraster_distance_in_screen_pixels);
}
void PictureLayerImpl::UpdateIdealScales() {
DCHECK(CanHaveTilings());
float min_contents_scale = MinimumContentsScale();
DCHECK_GT(min_contents_scale, 0.f);
ideal_device_scale_ = layer_tree_impl()->device_scale_factor();
ideal_page_scale_ = 1.f;
ideal_contents_scale_ = GetIdealContentsScale();
if (layer_tree_impl()->PageScaleTransformNode()) {
DCHECK(!layer_tree_impl()->settings().is_layer_tree_for_subframe);
ideal_page_scale_ = IsAffectedByPageScale()
? layer_tree_impl()->current_page_scale_factor()
: 1.f;
}
// This layer may be in a layer tree embedded in a hierarchy that has its own
// page scale factor. We represent that here as 'external_page_scale_factor',
// a value that affects raster scale in the same way that page_scale_factor
// does, but doesn't affect any geometry calculations. In a normal main frame
// or OOPIF, only one of current or external page scale factor is ever used
// but not both. The only exception to this is a main frame in a portal. It
// may have a current_page_scale_factor (e.g. due to a viewport <meta> tag)
// as well as an external_page_scale_factor coming from the page scale of its
// embedder page.
float external_page_scale_factor =
layer_tree_impl() ? layer_tree_impl()->external_page_scale_factor() : 1.f;
DCHECK(!layer_tree_impl() ||
!layer_tree_impl()->settings().is_layer_tree_for_subframe ||
external_page_scale_factor == 1.f ||
layer_tree_impl()->current_page_scale_factor() == 1.f);
ideal_page_scale_ *= external_page_scale_factor;
ideal_contents_scale_.Scale(external_page_scale_factor);
ideal_contents_scale_.SetToMax(
gfx::Vector2dF(min_contents_scale, min_contents_scale));
ideal_contents_scale_.SetToMin(
gfx::Vector2dF(kMaxIdealContentsScale, kMaxIdealContentsScale));
ideal_source_scale_ = {
ideal_contents_scale_.x() / ideal_page_scale_ / ideal_device_scale_,
ideal_contents_scale_.y() / ideal_page_scale_ / ideal_device_scale_};
}
void PictureLayerImpl::GetDebugBorderProperties(
SkColor* color,
float* width) const {
float device_scale_factor =
layer_tree_impl() ? layer_tree_impl()->device_scale_factor() : 1;
if (directly_composited_image_size_) {
*color = DebugColors::ImageLayerBorderColor();
*width = DebugColors::ImageLayerBorderWidth(device_scale_factor);
} else {
*color = DebugColors::TiledContentLayerBorderColor();
*width = DebugColors::TiledContentLayerBorderWidth(device_scale_factor);
}
}
void PictureLayerImpl::GetAllPrioritizedTilesForTracing(
std::vector<PrioritizedTile>* prioritized_tiles) const {
if (!tilings_)
return;
tilings_->GetAllPrioritizedTilesForTracing(prioritized_tiles);
}
void PictureLayerImpl::AsValueInto(
base::trace_event::TracedValue* state) const {
LayerImpl::AsValueInto(state);
state->SetDouble("ideal_contents_scale", ideal_contents_scale_key());
state->SetDouble("geometry_contents_scale", MaximumTilingContentsScale());
state->BeginArray("tilings");
tilings_->AsValueInto(state);
state->EndArray();
MathUtil::AddToTracedValue("tile_priority_rect",
viewport_rect_for_tile_priority_in_content_space_,
state);
MathUtil::AddToTracedValue("visible_rect", visible_layer_rect(), state);
state->SetString(
"lcd_text_disallowed_reason",
LCDTextDisallowedReasonToString(lcd_text_disallowed_reason_));
state->BeginArray("pictures");
raster_source_->AsValueInto(state);
state->EndArray();
state->BeginArray("invalidation");
invalidation_.AsValueInto(state);
state->EndArray();
state->BeginArray("coverage_tiles");
for (PictureLayerTilingSet::CoverageIterator iter(
tilings_.get(), MaximumTilingContentsScale(),
gfx::Rect(raster_source_->GetSize()), ideal_contents_scale_key());
iter; ++iter) {
state->BeginDictionary();
MathUtil::AddToTracedValue("geometry_rect", iter.geometry_rect(), state);
if (*iter)
viz::TracedValue::SetIDRef(*iter, state, "tile");
state->EndDictionary();
}
state->EndArray();
state->BeginDictionary("can_have_tilings_state");
state->SetBoolean("can_have_tilings", CanHaveTilings());
state->SetBoolean("raster_source_solid_color",
raster_source_->IsSolidColor());
state->SetBoolean("draws_content", DrawsContent());
state->SetBoolean("raster_source_has_recordings",
raster_source_->HasRecordings());
state->SetDouble("max_contents_scale", MaximumTilingContentsScale());
state->SetDouble("min_contents_scale", MinimumContentsScale());
state->EndDictionary();
state->BeginDictionary("raster_scales");
state->SetDouble("page_scale", raster_page_scale_);
state->SetDouble("device_scale", raster_device_scale_);
state->BeginArray("source_scale");
state->AppendDouble(raster_source_scale_.x());
state->AppendDouble(raster_source_scale_.y());
state->EndArray();
state->BeginArray("contents_scale");
state->AppendDouble(raster_contents_scale_.x());
state->AppendDouble(raster_contents_scale_.y());
state->EndArray();
state->SetDouble("low_res_contents_scale", low_res_raster_contents_scale_);
state->EndDictionary();
state->BeginDictionary("ideal_scales");
state->SetDouble("page_scale", ideal_page_scale_);
state->SetDouble("device_scale", ideal_device_scale_);
state->BeginArray("source_scale");
state->AppendDouble(ideal_source_scale_.x());
state->AppendDouble(ideal_source_scale_.y());
state->EndArray();
state->BeginArray("contents_scale");
state->AppendDouble(ideal_contents_scale_.x());
state->AppendDouble(ideal_contents_scale_.y());
state->EndArray();
state->EndDictionary();
}
size_t PictureLayerImpl::GPUMemoryUsageInBytes() const {
return tilings_->GPUMemoryUsageInBytes();
}
void PictureLayerImpl::RunMicroBenchmark(MicroBenchmarkImpl* benchmark) {
benchmark->RunOnLayer(this);
}
bool PictureLayerImpl::IsOnActiveOrPendingTree() const {
return !layer_tree_impl()->IsRecycleTree();
}
bool PictureLayerImpl::HasValidTilePriorities() const {
return IsOnActiveOrPendingTree() &&
(contributes_to_drawn_render_surface() || raster_even_if_not_drawn());
}
PictureLayerImpl::ImageInvalidationResult
PictureLayerImpl::InvalidateRegionForImages(
const PaintImageIdFlatSet& images_to_invalidate) {
if (!raster_source_ || !raster_source_->GetDisplayItemList() ||
raster_source_->GetDisplayItemList()->discardable_image_map().empty()) {
return ImageInvalidationResult::kNoImages;
}
InvalidationRegion image_invalidation;
for (auto image_id : images_to_invalidate) {
const auto& rects = raster_source_->GetDisplayItemList()
->discardable_image_map()
.GetRectsForImage(image_id);
for (const auto& r : rects.container())
image_invalidation.Union(r);
}
Region invalidation;
image_invalidation.Swap(&invalidation);
if (invalidation.IsEmpty())
return ImageInvalidationResult::kNoInvalidation;
// Note: We can use a rect here since this is only used to track damage for a
// frame and not raster invalidation.
UnionUpdateRect(invalidation.bounds());
invalidation_.Union(invalidation);
tilings_->Invalidate(invalidation);
// TODO(crbug.com/303943): SetNeedsPushProperties() would be needed here if
// PictureLayerImpl didn't always push properties every activation.
return ImageInvalidationResult::kInvalidated;
}
void PictureLayerImpl::SetPaintWorkletRecord(
scoped_refptr<const PaintWorkletInput> input,
sk_sp<PaintRecord> record) {
DCHECK(paint_worklet_records_.find(input) != paint_worklet_records_.end());
paint_worklet_records_[input].second = std::move(record);
}
void PictureLayerImpl::RegisterAnimatedImages() {
if (!raster_source_ || !raster_source_->GetDisplayItemList())
return;
auto* controller = layer_tree_impl()->image_animation_controller();
const auto& metadata = raster_source_->GetDisplayItemList()
->discardable_image_map()
.animated_images_metadata();
for (const auto& data : metadata) {
// Only update the metadata from updated recordings received from a commit.
if (layer_tree_impl()->IsSyncTree())
controller->UpdateAnimatedImage(data);
controller->RegisterAnimationDriver(data.paint_image_id, this);
}
}
void PictureLayerImpl::UnregisterAnimatedImages() {
if (!raster_source_ || !raster_source_->GetDisplayItemList())
return;
auto* controller = layer_tree_impl()->image_animation_controller();
const auto& metadata = raster_source_->GetDisplayItemList()
->discardable_image_map()
.animated_images_metadata();
for (const auto& data : metadata)
controller->UnregisterAnimationDriver(data.paint_image_id, this);
}
void PictureLayerImpl::SetPaintWorkletInputs(
const std::vector<DiscardableImageMap::PaintWorkletInputWithImageId>&
inputs) {
// PaintWorklets are not supported when committing directly to the active
// tree, so in that case the |inputs| should always be empty.
DCHECK(layer_tree_impl()->IsPendingTree() || inputs.empty());
bool had_paint_worklets = !paint_worklet_records_.empty();
PaintWorkletRecordMap new_records;
for (const auto& input_with_id : inputs) {
const auto& input = input_with_id.first;
const auto& paint_image_id = input_with_id.second;
auto it = new_records.find(input);
// We should never have multiple PaintImages sharing the same paint worklet.
DCHECK(it == new_records.end() || it->second.first == paint_image_id);
// Attempt to re-use an existing PaintRecord if possible.
new_records[input] = std::make_pair(
paint_image_id, std::move(paint_worklet_records_[input].second));
}
paint_worklet_records_.swap(new_records);
// The pending tree tracks which PictureLayerImpls have PaintWorkletInputs as
// an optimization to avoid walking all picture layers.
bool has_paint_worklets = !paint_worklet_records_.empty();
if ((has_paint_worklets != had_paint_worklets) &&
layer_tree_impl()->IsPendingTree()) {
// TODO(xidachen): We don't need additional tracking on LayerTreeImpl. The
// tracking in AnimatedPaintWorkletTracker should be enough.
layer_tree_impl()->NotifyLayerHasPaintWorkletsChanged(this,
has_paint_worklets);
}
if (layer_tree_impl()->IsPendingTree()) {
layer_tree_impl()
->paint_worklet_tracker()
.UpdatePaintWorkletInputProperties(inputs, this);
}
}
void PictureLayerImpl::InvalidatePaintWorklets(
const PaintWorkletInput::PropertyKey& key) {
for (auto& entry : paint_worklet_records_) {
const std::vector<PaintWorkletInput::PropertyKey>& prop_ids =
entry.first->GetPropertyKeys();
// If the PaintWorklet depends on the property whose value was changed by
// the animation system, then invalidate its associated PaintRecord so that
// we can repaint the PaintWorklet during impl side invalidation.
if (base::Contains(prop_ids, key))
entry.second.second = nullptr;
}
}
gfx::ContentColorUsage PictureLayerImpl::GetContentColorUsage() const {
auto display_item_list = raster_source_->GetDisplayItemList();
if (!display_item_list)
return gfx::ContentColorUsage::kSRGB;
return display_item_list->discardable_image_map().content_color_usage();
}
} // namespace cc