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