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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/GrGpuBuffer.h"
#include "src/gpu/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, const void* data = nullptr);
~GrMtlBuffer() override;
id<MTLBuffer> mtlBuffer() const { return fMtlBuffer; }
size_t offset() const { return fOffset; }
void bind(); // for initial binding of XferGpuToCpu buffers
protected:
GrMtlBuffer(GrMtlGpu*, size_t size, GrGpuBufferType intendedType, GrAccessPattern);
void onAbandon() override;
void onRelease() override;
private:
GrMtlGpu* mtlGpu() const;
void onMap() override;
void onUnmap() override;
bool onUpdateData(const void* src, size_t srcSizeInBytes) override;
void internalMap(size_t sizeInBytes);
void internalUnmap(size_t sizeInBytes);
#ifdef SK_DEBUG
void validate() const;
#endif
bool fIsDynamic;
id<MTLBuffer> fMtlBuffer;
size_t fOffset; // offset into shared buffer for dynamic buffers
id<MTLBuffer> fMappedBuffer; // buffer used by static buffers for uploads
typedef GrGpuBuffer INHERITED;
};
#endif
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