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f2af347363
Now, frame requests past the pipeline depth will never be deferred due to back pressure. This backend is only used in the test runner.
51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
// Copyright 2016 The Chromium 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/common/null_rasterizer.h"
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namespace shell {
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NullRasterizer::NullRasterizer() : weak_factory_(this) {}
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void NullRasterizer::Setup(
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std::unique_ptr<Surface> surface_or_null,
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ftl::Closure rasterizer_continuation,
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ftl::AutoResetWaitableEvent* setup_completion_event) {
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surface_ = std::move(surface_or_null);
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rasterizer_continuation();
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setup_completion_event->Signal();
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}
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void NullRasterizer::Teardown(
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ftl::AutoResetWaitableEvent* teardown_completion_event) {
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if (surface_) {
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surface_.reset();
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}
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teardown_completion_event->Signal();
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}
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ftl::WeakPtr<Rasterizer> NullRasterizer::GetWeakRasterizerPtr() {
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return weak_factory_.GetWeakPtr();
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}
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flow::LayerTree* NullRasterizer::GetLastLayerTree() {
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return nullptr;
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}
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void NullRasterizer::Clear(SkColor color, const SkISize& size) {
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// Null rasterizer. Nothing to do.
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}
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void NullRasterizer::Draw(
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ftl::RefPtr<flutter::Pipeline<flow::LayerTree>> pipeline) {
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FTL_ALLOW_UNUSED_LOCAL(
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pipeline->Consume([](std::unique_ptr<flow::LayerTree>) {
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// Drop the layer tree on the floor. We only need the pipeline empty so
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// that frame requests are not deferred indefinitely due to
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// backpressure.
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}));
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}
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} // namespace shell
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