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94c5be8e6d
We could get into a situation where the second time we rasterize a picture for an SKP, the raster cache detects that the same picture is being repeated in subsequent onscreen frames and then proceeds to rasterize the contents to an offscreen texture. This not only causes an unnecessary cache entry, but also shows the cached image in the final SKP trace (which is not what was originally displayed on screen).
89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
// Copyright 2015 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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#ifndef FLUTTER_FLOW_LAYERS_LAYER_H_
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#define FLUTTER_FLOW_LAYERS_LAYER_H_
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#include <memory>
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#include <vector>
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#include "flutter/flow/instrumentation.h"
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#include "flutter/flow/raster_cache.h"
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#include "flutter/glue/trace_event.h"
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#include "lib/ftl/logging.h"
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#include "lib/ftl/macros.h"
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#include "third_party/skia/include/core/SkCanvas.h"
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#include "third_party/skia/include/core/SkColor.h"
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#include "third_party/skia/include/core/SkColorFilter.h"
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#include "third_party/skia/include/core/SkMatrix.h"
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#include "third_party/skia/include/core/SkPath.h"
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#include "third_party/skia/include/core/SkPicture.h"
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#include "third_party/skia/include/core/SkRect.h"
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#include "third_party/skia/include/core/SkRRect.h"
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#include "third_party/skia/include/core/SkXfermode.h"
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namespace mojo {
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namespace gfx {
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namespace composition {
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class SceneUpdate;
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class Node;
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} // composition
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} // namespace gfx
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} // namespace mojo
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namespace flow {
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class ContainerLayer;
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class Layer {
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public:
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Layer();
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virtual ~Layer();
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struct PrerollContext {
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RasterCache* raster_cache;
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GrContext* gr_context;
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SkRect child_paint_bounds;
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};
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virtual void Preroll(PrerollContext* context, const SkMatrix& matrix);
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struct PaintContext {
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SkCanvas& canvas;
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const Stopwatch& frame_time;
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const Stopwatch& engine_time;
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};
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virtual void Paint(PaintContext& context) = 0;
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virtual void UpdateScene(mojo::gfx::composition::SceneUpdate* update,
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mojo::gfx::composition::Node* container);
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ContainerLayer* parent() const { return parent_; }
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void set_parent(ContainerLayer* parent) { parent_ = parent; }
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// subclasses should assume this will be true by the time Paint() is called
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bool has_paint_bounds() const { return has_paint_bounds_; }
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const SkRect& paint_bounds() const {
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FTL_DCHECK(has_paint_bounds_);
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return paint_bounds_;
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}
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void set_paint_bounds(const SkRect& paint_bounds) {
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has_paint_bounds_ = true;
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paint_bounds_ = paint_bounds;
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}
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private:
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ContainerLayer* parent_;
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bool has_paint_bounds_; // if false, paint_bounds_ is not valid
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SkRect paint_bounds_;
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FTL_DISALLOW_COPY_AND_ASSIGN(Layer);
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};
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} // namespace flow
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#endif // FLUTTER_FLOW_LAYERS_LAYER_H_
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