MtlMemoryAllocatorImpl.h

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/*
 * Copyright 2021 Google LLC
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#ifndef skgpu_MtlMemoryAllocatorImpl_DEFINED
#define skgpu_MtlMemoryAllocatorImpl_DEFINED
 
#include "include/core/SkRefCnt.h"
#include "include/gpu/mtl/MtlMemoryAllocator.h"
 
#import <Metal/Metal.h>
 
namespace skgpu {
 
class MtlMemoryAllocatorImpl : public MtlMemoryAllocator {
public:
    static sk_sp<MtlMemoryAllocator> Make(id<MTLDevice>);
 
    ~MtlMemoryAllocatorImpl() override {}
 
    id<MTLBuffer> newBufferWithLength(NSUInteger length, MTLResourceOptions options,
                                      sk_sp<skgpu::MtlAlloc>* allocation) override;
    id<MTLTexture> newTextureWithDescriptor(MTLTextureDescriptor* texDesc,
                                            sk_sp<skgpu::MtlAlloc>* allocation) override;
 
    class Alloc : public MtlAlloc {
    public:
        Alloc() {}
        ~Alloc() override {
            // TODO: free allocation
        }
    private:
        friend class MtlMemoryAllocatorImpl;
        // TODO: allocation data goes here
    };
 
private:
    MtlMemoryAllocatorImpl(id<MTLDevice> device) : fDevice(device) {}
 
    id<MTLDevice> fDevice;
};
 
} // namespace skgpu
 
#endif // skgpu_MtlMemoryAllocatorImpl_DEFINED