SkRuntimeBlender.h

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/*
 * Copyright 2023 Google LLC
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
#ifndef SkRuntimeBlender_DEFINED
#define SkRuntimeBlender_DEFINED
 
#include "include/core/SkData.h"
#include "include/core/SkFlattenable.h"
#include "include/core/SkRefCnt.h"
#include "include/effects/SkRuntimeEffect.h"
#include "include/private/base/SkSpan_impl.h"
#include "src/core/SkBlenderBase.h"
 
#include <utility>
#include <vector>
 
class SkReadBuffer;
class SkWriteBuffer;
struct SkStageRec;
 
class SkRuntimeBlender : public SkBlenderBase {
public:
    SkRuntimeBlender(sk_sp<SkRuntimeEffect> effect,
                     sk_sp<const SkData> uniforms,
                     SkSpan<const SkRuntimeEffect::ChildPtr> children)
            : fEffect(std::move(effect))
            , fUniforms(std::move(uniforms))
            , fChildren(children.begin(), children.end()) {}
 
    SkRuntimeEffect* asRuntimeEffect() const override { return fEffect.get(); }
 
    BlenderType type() const override { return BlenderType::kRuntime; }
 
    bool onAppendStages(const SkStageRec& rec) const override;
 
    void flatten(SkWriteBuffer& buffer) const override;
 
    SK_FLATTENABLE_HOOKS(SkRuntimeBlender)
 
    sk_sp<SkRuntimeEffect> effect() const { return fEffect; }
    sk_sp<const SkData> uniforms() const { return fUniforms; }
    SkSpan<const SkRuntimeEffect::ChildPtr> children() const { return fChildren; }
 
private:
    sk_sp<SkRuntimeEffect> fEffect;
    sk_sp<const SkData> fUniforms;
    std::vector<SkRuntimeEffect::ChildPtr> fChildren;
};
 
#endif