77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
/*
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* Copyright 2024 Google LLC
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*
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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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*/
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#ifndef skgpu_graphite_precompile_PrecompileBase_DEFINED
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#define skgpu_graphite_precompile_PrecompileBase_DEFINED
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkSpan.h"
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namespace skgpu::graphite {
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class KeyContext;
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class PaintParamsKeyBuilder;
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class PrecompileBasePriv;
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/** \class PrecompileBase
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This is the base class for all the objects that can be attached to PaintOptions.
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*/
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class SK_API PrecompileBase : public SkRefCnt {
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public:
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enum class Type {
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kBlender,
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kColorFilter,
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kImageFilter,
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kMaskFilter,
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kShader,
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};
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Type type() const { return fType; }
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// Provides access to functions that aren't part of the public API.
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PrecompileBasePriv priv();
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const PrecompileBasePriv priv() const; // NOLINT(readability-const-return-type)
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protected:
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PrecompileBase(Type type) : fType(type) {}
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virtual int numIntrinsicCombinations() const { return 1; }
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virtual int numChildCombinations() const { return 1; }
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/** This call returns the number of combinations generated from this object and its childen.
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@return number of precompilation combinations generated by this object
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*/
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int numCombinations() const {
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return this->numIntrinsicCombinations() * this->numChildCombinations();
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}
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virtual void addToKey(const KeyContext&, int desiredCombination) const = 0;
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// This returns the desired option along with the child options.
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template<typename T>
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static std::pair<sk_sp<T>, int> SelectOption(SkSpan<const sk_sp<T>> options,
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int desiredOption);
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// In general, derived classes should use AddToKey to select the desired child option from
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// a span and then have it added to the key with its reduced/nested child option.
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template<typename T>
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static void AddToKey(const KeyContext&, SkSpan<const sk_sp<T>> options, int desiredOption);
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private:
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friend class PrecompileBasePriv;
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friend class PaintOptions; // for access to SelectOption
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friend class PrecompileBlenderList; // ""
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Type fType;
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};
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} // namespace skgpu::graphite
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#endif // skgpu_graphite_precompile_PrecompileBase_DEFINED
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