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92abb22c64
This reverts commit ef9e7b1a1365c07ab0df2e2016c4442c3963c2c7 with the following changes to accommodate an embedder for whom the original optimizations caused issues: * Ensure stable order in the backing stores presented to the embedder. This is a pessimization that will be reverted when the embedder migrates. Tracked in https://github.com/flutter/flutter/issues/51228 * Forego the optimization where the unused layers would be collected before allocation of new layers needs to happen. This is a pessimization that will be reverted when the embedder migrates. Tracked in https://github.com/flutter/flutter/issues/51229 More context in b/146142979.
74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/shell/platform/embedder/embedder_render_target_cache.h"
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namespace flutter {
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EmbedderRenderTargetCache::EmbedderRenderTargetCache() = default;
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EmbedderRenderTargetCache::~EmbedderRenderTargetCache() = default;
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std::pair<EmbedderRenderTargetCache::RenderTargets,
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EmbedderExternalView::ViewIdentifierSet>
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EmbedderRenderTargetCache::GetExistingTargetsInCache(
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const EmbedderExternalView::PendingViews& pending_views) {
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RenderTargets resolved_render_targets;
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EmbedderExternalView::ViewIdentifierSet unmatched_identifiers;
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for (const auto& view : pending_views) {
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const auto& external_view = view.second;
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if (!external_view->HasEngineRenderedContents()) {
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continue;
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}
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auto& compatible_targets =
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cached_render_targets_[external_view->CreateRenderTargetDescriptor()];
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if (compatible_targets.size() == 0) {
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unmatched_identifiers.insert(view.first);
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} else {
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std::unique_ptr<EmbedderRenderTarget> target =
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std::move(compatible_targets.top());
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compatible_targets.pop();
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resolved_render_targets[view.first] = std::move(target);
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}
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}
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return {std::move(resolved_render_targets), std::move(unmatched_identifiers)};
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}
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std::set<std::unique_ptr<EmbedderRenderTarget>>
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EmbedderRenderTargetCache::ClearAllRenderTargetsInCache() {
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std::set<std::unique_ptr<EmbedderRenderTarget>> cleared_targets;
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for (auto& targets : cached_render_targets_) {
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auto& targets_stack = targets.second;
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while (!targets_stack.empty()) {
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cleared_targets.emplace(std::move(targets_stack.top()));
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targets_stack.pop();
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}
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}
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cached_render_targets_.clear();
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return cleared_targets;
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}
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void EmbedderRenderTargetCache::CacheRenderTarget(
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EmbedderExternalView::ViewIdentifier view_identifier,
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std::unique_ptr<EmbedderRenderTarget> target) {
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if (target == nullptr) {
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return;
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}
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auto surface = target->GetRenderSurface();
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auto desc = EmbedderExternalView::RenderTargetDescriptor{
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view_identifier, SkISize::Make(surface->width(), surface->height())};
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cached_render_targets_[desc].push(std::move(target));
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}
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size_t EmbedderRenderTargetCache::GetCachedTargetsCount() const {
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size_t count = 0;
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for (const auto& targets : cached_render_targets_) {
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count += targets.second.size();
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}
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return count;
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}
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} // namespace flutter
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