PrecompileShaderPriv.h

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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_PrecompileShaderPriv_DEFINED
#define skgpu_graphite_PrecompileShaderPriv_DEFINED
 
#include "include/gpu/graphite/precompile/PrecompileShader.h"
 
namespace skgpu::graphite {
 
/** Class that exposes methods in PrecompileShader that are only intended for use internal to Skia.
    This class is purely a privileged window into PrecompileShader. It should never have additional
    data members or virtual methods. */
class PrecompileShaderPriv {
public:
    bool isConstant(int desiredCombination) const {
        return fPrecompileShader->isConstant(desiredCombination);
    }
 
    bool isALocalMatrixShader() const {
        return fPrecompileShader->isALocalMatrixShader();
    }
 
    // The remaining methods make this a viable standin for PrecompileBasePriv
    int numChildCombinations() const { return fPrecompileShader->numChildCombinations(); }
 
    int numCombinations() const { return fPrecompileShader->numCombinations(); }
 
    void addToKey(const KeyContext& keyContext,
                  PaintParamsKeyBuilder* builder,
                  PipelineDataGatherer* gatherer,
                  int desiredCombination) const {
        fPrecompileShader->addToKey(keyContext, builder, gatherer, desiredCombination);
    }
 
private:
    friend class PrecompileShader; // to construct/copy this type.
 
    explicit PrecompileShaderPriv(PrecompileShader* precompileShader)
            : fPrecompileShader(precompileShader) {}
 
    PrecompileShaderPriv& operator=(const PrecompileShaderPriv&) = delete;
 
    // No taking addresses of this type.
    const PrecompileShaderPriv* operator&() const;
    PrecompileShaderPriv *operator&();
 
    PrecompileShader* fPrecompileShader;
};
 
inline PrecompileShaderPriv PrecompileShader::priv() { return PrecompileShaderPriv(this); }
 
// NOLINTNEXTLINE(readability-const-return-type)
inline const PrecompileShaderPriv PrecompileShader::priv() const {
    return PrecompileShaderPriv(const_cast<PrecompileShader *>(this));
}
 
} // namespace skgpu::graphite
 
#endif // skgpu_graphite_PrecompileShaderPriv_DEFINED