| // 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; |
| |
| // 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), |
| twin_layer_(nullptr), |
| tilings_(CreatePictureLayerTilingSet()), |
| ideal_page_scale_(0.f), |
| ideal_device_scale_(0.f), |
| ideal_source_scale_(0.f), |
| ideal_contents_scale_(0.f), |
| raster_page_scale_(0.f), |
| raster_device_scale_(0.f), |
| raster_source_scale_(0.f), |
| raster_contents_scale_(0.f), |
| low_res_raster_contents_scale_(0.f), |
| is_backdrop_filter_mask_(false), |
| was_screen_space_transform_animating_(false), |
| only_used_low_res_last_append_quads_(false), |
| nearest_neighbor_(false), |
| lcd_text_disallowed_reason_(LCDTextDisallowedReason::kNone), |
| directly_composited_image_size_(base::nullopt), |
| directly_composited_image_initial_raster_scale_(0.f), |
| tile_size_calculator_(this) { |
| 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 (raster_contents_scale_ >= 1.f && high_res) { |
| const float epsilon = 1.f; |
| gfx::SizeF scaled_tiling_size(high_res->tiling_size()); |
| scaled_tiling_size.Scale(1 / raster_contents_scale_); |
| DCHECK(std::abs(bounds().width() - scaled_tiling_size.width()) < epsilon); |
| 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_); |
| 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_); |
| 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_ && |
| iter->contents_scale_key() != ideal_contents_scale_ && |
| 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_ = 0.f; |
| ideal_source_scale_ = 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_); |
| DCHECK(raster_contents_scale_); |
| 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_, |
| 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 = 0; |
| 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_); |
| |
| // Mask resource not ready yet. |
| if (!iter || !*iter) { |
| *resource_id = 0; |
| 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 = 0; |
| 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_; |
| |
| // 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_, 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(), MinimumContentsScale()); |
| DCHECK_LE(raster_transform.scale(), 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_); |
| |
| gfx::Vector2dF raster_translation; |
| bool raster_translation_aligns_pixels = |
| CalculateRasterTranslation(raster_translation); |
| UpdateCanUseLCDText(raster_translation_aligns_pixels); |
| if (high_res) { |
| bool raster_translation_is_not_ideal = |
| 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_translation_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_) |
| 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_ < std::min(ideal_source_scale_, max_scale)) |
| return true; |
| if (raster_source_scale_ > 4 * ideal_source_scale_) |
| 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; |
| |
| if (raster_contents_scale_ > MaximumContentsScale()) |
| return true; |
| if (raster_contents_scale_ < MinimumContentsScale()) |
| return true; |
| |
| // Don't change the raster scale if we have an animating transform, except |
| // when the device viewport rect has changed because the raster scale may |
| // depend on the rect. |
| if (draw_properties().screen_space_transform_is_animating) |
| return layer_tree_impl()->device_viewport_rect_changed(); |
| |
| // 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() && |
| raster_contents_scale_ >= |
| MinimumRasterContentsScaleForWillChangeTransform()) { |
| 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_ == 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_) { |
| float used_raster_scale = CalculateDirectlyCompositedImageRasterScale(); |
| if (ShouldDirectlyCompositeImage(used_raster_scale)) { |
| directly_composited_image_initial_raster_scale_ = |
| GetDefaultDirectlyCompositedImageRasterScale(); |
| raster_source_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_ = raster_contents_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; |
| } |
| |
| float old_raster_contents_scale = raster_contents_scale_; |
| float old_raster_page_scale = raster_page_scale_; |
| |
| // The raster scale if previous tilings should be preserved. |
| float 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) { |
| // 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 = old_raster_contents_scale; |
| if (zooming_out) { |
| while (desired_contents_scale > ideal_contents_scale_) |
| desired_contents_scale /= kMaxScaleRatioDuringPinch; |
| } else { |
| while (desired_contents_scale < ideal_contents_scale_) |
| desired_contents_scale *= kMaxScaleRatioDuringPinch; |
| } |
| raster_contents_scale_ = preserved_raster_contents_scale = |
| tilings_->GetSnappedContentsScaleKey(desired_contents_scale, |
| kSnapToExistingTilingRatio); |
| raster_page_scale_ = |
| raster_contents_scale_ / raster_device_scale_ / raster_source_scale_; |
| } |
| |
| if (draw_properties().screen_space_transform_is_animating) |
| AdjustRasterScaleForTransformAnimation(preserved_raster_contents_scale); |
| |
| if (HasWillChangeTransformHint()) { |
| raster_contents_scale_ = |
| std::max(raster_contents_scale_, |
| MinimumRasterContentsScaleForWillChangeTransform()); |
| } |
| |
| raster_contents_scale_ = |
| std::max(raster_contents_scale_, MinimumContentsScale()); |
| raster_contents_scale_ = |
| std::min(raster_contents_scale_, MaximumContentsScale()); |
| DCHECK_GE(raster_contents_scale_, MinimumContentsScale()); |
| DCHECK_LE(raster_contents_scale_, MaximumContentsScale()); |
| |
| // 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_); |
| 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_; |
| return; |
| } |
| |
| float low_res_factor = |
| layer_tree_impl()->settings().low_res_contents_scale_factor; |
| low_res_raster_contents_scale_ = |
| std::max(raster_contents_scale_ * low_res_factor, MinimumContentsScale()); |
| DCHECK_LE(low_res_raster_contents_scale_, raster_contents_scale_); |
| DCHECK_GE(low_res_raster_contents_scale_, MinimumContentsScale()); |
| DCHECK_LE(low_res_raster_contents_scale_, MaximumContentsScale()); |
| } |
| |
| void PictureLayerImpl::AdjustRasterScaleForTransformAnimation( |
| float preserved_raster_contents_scale) { |
| DCHECK(draw_properties().screen_space_transform_is_animating); |
| |
| CombinedAnimationScale animation_scales = |
| layer_tree_impl()->property_trees()->GetAnimationScales( |
| transform_tree_index(), layer_tree_impl()); |
| float maximum_scale = animation_scales.maximum_animation_scale; |
| float starting_scale = animation_scales.starting_animation_scale; |
| // Adjust raster scale only if the animation scale is known. |
| if (maximum_scale == kNotScaled && starting_scale == kNotScaled) { |
| // Use at least the native scale if the animation scale is unknown. |
| raster_contents_scale_ = std::max(raster_contents_scale_, |
| ideal_page_scale_ * ideal_device_scale_); |
| } else { |
| // We rasterize at the maximum scale that will occur during the animation. |
| raster_contents_scale_ = std::max(maximum_scale, starting_scale); |
| } |
| DCHECK_NE(raster_contents_scale_, kNotScaled); |
| |
| // 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::Size bounds_at_maximum_scale = |
| gfx::ScaleToCeiledSize(raster_source_->GetSize(), raster_contents_scale_); |
| float maximum_area = static_cast<float>(bounds_at_maximum_scale.width()) * |
| bounds_at_maximum_scale.height(); |
| // Clamp the scale to make the rastered content not larger than the viewport. |
| if (UNLIKELY(maximum_area > squared_viewport_area)) |
| raster_contents_scale_ /= std::sqrt(maximum_area / squared_viewport_area); |
| |
| 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_ = |
| std::max(preserved_raster_contents_scale, 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_, ideal_contents_scale_); |
| float max_acceptable_high_res_scale = std::max( |
| raster_contents_scale_, ideal_contents_scale_); |
| |
| PictureLayerImpl* twin = GetPendingOrActiveTwinLayer(); |
| if (twin && twin->CanHaveTilings()) { |
| min_acceptable_high_res_scale = |
| std::min({min_acceptable_high_res_scale, twin->raster_contents_scale_, |
| twin->ideal_contents_scale_}); |
| max_acceptable_high_res_scale = |
| std::max({max_acceptable_high_res_scale, twin->raster_contents_scale_, |
| twin->ideal_contents_scale_}); |
| } |
| |
| 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_; |
| // 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_contents_scale_ < |
| native_scale * kMinScaleRatioForWillChangeTransform) { |
| // Don't let the scale too small compared to the ideal scale. |
| return ideal_contents_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](float scale) -> bool { |
| return std::abs(scale - raster_contents_scale_) <= kScaleErrorThreshold; |
| }; |
| if (!is_raster_scale(screen_transform.matrix().getFloat(0, 0)) || |
| !is_raster_scale(screen_transform.matrix().getFloat(1, 1)) || |
| !is_raster_scale(draw_transform.matrix().getFloat(0, 0)) || |
| !is_raster_scale(draw_transform.matrix().getFloat(1, 1))) { |
| 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_ = 0.f; |
| raster_contents_scale_ = 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_ *= external_page_scale_factor; |
| |
| ideal_contents_scale_ = base::ClampToRange( |
| ideal_contents_scale_, min_contents_scale, kMaxIdealContentsScale); |
| ideal_source_scale_ = |
| ideal_contents_scale_ / 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_); |
| 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_); |
| 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->SetDouble("source_scale", raster_source_scale_); |
| state->SetDouble("contents_scale", raster_contents_scale_); |
| 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->SetDouble("source_scale", ideal_source_scale_); |
| state->SetDouble("contents_scale", ideal_contents_scale_); |
| 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 |