GrMtlBuffer.h

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/*
 * Copyright 2018 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef GrMtlBuffer_DEFINED
#define GrMtlBuffer_DEFINED
 
#include "src/gpu/ganesh/GrGpuBuffer.h"
#include "src/gpu/ganesh/mtl/GrMtlUniformHandler.h"
 
#import <Metal/Metal.h>
 
class GrMtlCaps;
class GrMtlGpu;
 
class GrMtlBuffer: public GrGpuBuffer {
public:
    static sk_sp<GrMtlBuffer> Make(GrMtlGpu*,
                                   size_t size,
                                   GrGpuBufferType intendedType,
                                   GrAccessPattern);
 
    ~GrMtlBuffer() override;
 
    id<MTLBuffer> mtlBuffer() const { return fMtlBuffer; }
 
protected:
    GrMtlBuffer(GrMtlGpu*,
                size_t size,
                GrGpuBufferType intendedType,
                GrAccessPattern,
                std::string_view label);
 
    void onAbandon() override;
    void onRelease() override;
 
private:
    GrMtlGpu* mtlGpu() const;
 
    void onMap(MapType) override;
    bool onClearToZero() override;
    void onUnmap(MapType) override;
    bool onUpdateData(const void* src, size_t offset, size_t size, bool preserve) override;
 
    void internalMap();
    void internalUnmap(size_t writtenOffset, size_t writtenSize);
 
#ifdef SK_DEBUG
    void validate() const;
#endif
 
    void onSetLabel() override;
 
    bool fIsDynamic;
    id<MTLBuffer> fMtlBuffer;
 
    using INHERITED = GrGpuBuffer;
};
 
#endif