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surface_frame.cc
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surface_frame.cc
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// 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/flow/surface_frame.h"
#include <limits>
#include <utility>
#include "flutter/fml/logging.h"
#include "flutter/fml/trace_event.h"
#include "third_party/skia/include/core/SkSurface.h"
#include "third_party/skia/include/utils/SkNWayCanvas.h"
namespace flutter {
SurfaceFrame::SurfaceFrame(sk_sp<SkSurface> surface,
FramebufferInfo framebuffer_info,
const SubmitCallback& submit_callback,
SkISize frame_size,
std::unique_ptr<GLContextResult> context_result,
bool display_list_fallback)
: surface_(std::move(surface)),
framebuffer_info_(framebuffer_info),
submit_callback_(submit_callback),
context_result_(std::move(context_result)) {
FML_DCHECK(submit_callback_);
if (surface_) {
adapter_.set_canvas(surface_->getCanvas());
canvas_ = &adapter_;
} else if (display_list_fallback) {
FML_DCHECK(!frame_size.isEmpty());
// The root frame of a surface will be filled by the layer_tree which
// performs branch culling so it will be unlikely to need an rtree for
// further culling during `DisplayList::Dispatch`. Further, this canvas
// will live underneath any platform views so we do not need to compute
// exact coverage to describe "pixel ownership" to the platform.
dl_builder_ = sk_make_sp<DisplayListBuilder>(SkRect::Make(frame_size),
/*prepare_rtree=*/false);
canvas_ = dl_builder_.get();
}
}
bool SurfaceFrame::Submit() {
TRACE_EVENT0("flutter", "SurfaceFrame::Submit");
if (submitted_) {
return false;
}
submitted_ = PerformSubmit();
return submitted_;
}
bool SurfaceFrame::IsSubmitted() const {
return submitted_;
}
DlCanvas* SurfaceFrame::Canvas() {
return canvas_;
}
sk_sp<SkSurface> SurfaceFrame::SkiaSurface() const {
return surface_;
}
bool SurfaceFrame::PerformSubmit() {
if (submit_callback_ == nullptr) {
return false;
}
if (submit_callback_(*this, Canvas())) {
return true;
}
return false;
}
sk_sp<DisplayList> SurfaceFrame::BuildDisplayList() {
TRACE_EVENT0("impeller", "SurfaceFrame::BuildDisplayList");
return dl_builder_ ? dl_builder_->Build() : nullptr;
}
} // namespace flutter