skia2/modules/sksg/include/SkSGClipEffect.h
Florin Malita c0132ffa64 [skottie] Optimize opacity layerization
- plumb a RenderContext RenderNode::render() argument to track pending
    opacity

  - defer opacity application until we can determine whether a layer is
    required (group with multiple children) or the opacity can be pushed
    onto the draw paint (for single/atomic draws)

Bug: skia:
Change-Id: I962ba08bad780395d5d738307bde986e9efa502b
Reviewed-on: https://skia-review.googlesource.com/146445
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
2018-08-09 14:48:02 +00:00

51 lines
1.1 KiB
C++

/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkSGClipEffect_DEFINED
#define SkSGClipEffect_DEFINED
#include "SkSGEffectNode.h"
namespace sksg {
class GeometryNode;
/**
* Concrete Effect node, applying a clip to its descendants.
*
*/
class ClipEffect final : public EffectNode {
public:
static sk_sp<ClipEffect> Make(sk_sp<RenderNode> child, sk_sp<GeometryNode> clip,
bool aa = false) {
return (child && clip)
? sk_sp<ClipEffect>(new ClipEffect(std::move(child), std::move(clip), aa))
: nullptr;
}
~ClipEffect() override;
protected:
ClipEffect(sk_sp<RenderNode>, sk_sp<GeometryNode>, bool aa);
void onRender(SkCanvas*, const RenderContext*) const override;
SkRect onRevalidate(InvalidationController*, const SkMatrix&) override;
private:
const sk_sp<GeometryNode> fClipNode;
const bool fAntiAlias;
bool fNoop = false;
typedef EffectNode INHERITED;
};
} // namespace sksg
#endif // SkSGClipEffect_DEFINED