blob: 3d0e6b4c9985841ccb5141f8099e89245c32e438 [file] [log] [blame]
// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "flutter/shell/platform/embedder/embedder_render_target_cache.h"
namespace flutter {
EmbedderRenderTargetCache::EmbedderRenderTargetCache() = default;
EmbedderRenderTargetCache::~EmbedderRenderTargetCache() = default;
std::pair<EmbedderRenderTargetCache::RenderTargets,
EmbedderExternalView::ViewIdentifierSet>
EmbedderRenderTargetCache::GetExistingTargetsInCache(
const EmbedderExternalView::PendingViews& pending_views) {
RenderTargets resolved_render_targets;
EmbedderExternalView::ViewIdentifierSet unmatched_identifiers;
for (const auto& view : pending_views) {
const auto& external_view = view.second;
if (!external_view->HasEngineRenderedContents()) {
continue;
}
auto& compatible_targets =
cached_render_targets_[external_view->CreateRenderTargetDescriptor()];
if (compatible_targets.empty()) {
unmatched_identifiers.insert(view.first);
} else {
std::unique_ptr<EmbedderRenderTarget> target =
std::move(compatible_targets.top());
compatible_targets.pop();
resolved_render_targets[view.first] = std::move(target);
}
}
return {std::move(resolved_render_targets), std::move(unmatched_identifiers)};
}
std::set<std::unique_ptr<EmbedderRenderTarget>>
EmbedderRenderTargetCache::ClearAllRenderTargetsInCache() {
std::set<std::unique_ptr<EmbedderRenderTarget>> cleared_targets;
for (auto& targets : cached_render_targets_) {
auto& targets_stack = targets.second;
while (!targets_stack.empty()) {
cleared_targets.emplace(std::move(targets_stack.top()));
targets_stack.pop();
}
}
cached_render_targets_.clear();
return cleared_targets;
}
void EmbedderRenderTargetCache::CacheRenderTarget(
EmbedderExternalView::ViewIdentifier view_identifier,
std::unique_ptr<EmbedderRenderTarget> target) {
if (target == nullptr) {
return;
}
auto desc = EmbedderExternalView::RenderTargetDescriptor{
view_identifier, target->GetRenderTargetSize()};
cached_render_targets_[desc].push(std::move(target));
}
size_t EmbedderRenderTargetCache::GetCachedTargetsCount() const {
size_t count = 0;
for (const auto& targets : cached_render_targets_) {
count += targets.second.size();
}
return count;
}
} // namespace flutter