GrPersistentCacheUtils.h

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/*
 * Copyright 2019 Google LLC
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef GrPersistentCacheEntry_DEFINED
#define GrPersistentCacheEntry_DEFINED
 
#include "include/core/SkData.h"
#include "include/private/base/SkTArray.h"
#include "include/private/gpu/ganesh/GrTypesPriv.h"
#include "src/sksl/ir/SkSLProgram.h"
 
#include <string>
 
class SkReadBuffer;
namespace SkSL { struct ProgramSettings; }
 
// The GrPersistentCache stores opaque blobs, as far as clients are concerned. It's helpful to
// inspect certain kinds of cached data within our tools, so for those cases (GLSL, SPIR-V), we
// put the serialization logic here, to be shared by the backend code and the tool code.
namespace GrPersistentCacheUtils {
 
struct ShaderMetadata {
    SkSL::ProgramSettings* fSettings = nullptr;
    skia_private::TArray<std::string> fAttributeNames;
    bool fHasSecondaryColorOutput = false;
    sk_sp<SkData> fPlatformData;
};
 
int GetCurrentVersion();
 
sk_sp<SkData> PackCachedShaders(SkFourByteTag shaderType,
                                const std::string shaders[],
                                const SkSL::Program::Interface[],
                                int numInterfaces,
                                const ShaderMetadata* meta = nullptr);
 
SkFourByteTag GetType(SkReadBuffer* reader);
 
bool UnpackCachedShaders(SkReadBuffer* reader,
                         std::string shaders[],
                         SkSL::Program::Interface[],
                         int numInterfaces,
                         ShaderMetadata* meta = nullptr);
 
}  // namespace GrPersistentCacheUtils
 
#endif