/*
 *  Copyright 2019-2020 Diligent Graphics LLC
 *  Copyright 2015-2019 Egor Yusov
 *  
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF ANY PROPRIETARY RIGHTS.
 *
 *  In no event and under no legal theory, whether in tort (including negligence), 
 *  contract, or otherwise, unless required by applicable law (such as deliberate 
 *  and grossly negligent acts) or agreed to in writing, shall any Contributor be
 *  liable for any damages, including any direct, indirect, special, incidental, 
 *  or consequential damages of any character arising as a result of this License or 
 *  out of the use or inability to use the software (including but not limited to damages 
 *  for loss of goodwill, work stoppage, computer failure or malfunction, or any and 
 *  all other commercial damages or losses), even if such Contributor has been advised 
 *  of the possibility of such damages.
 */

#pragma once

/// \file
/// Definition of the Diligent::IRenderDeviceMtl interface

#include "../../GraphicsEngine/interface/RenderDevice.h"

namespace Diligent
{

// {8D483E4A-2D53-47B2-B8D7-276F4CE57F68}
static const INTERFACE_ID IID_RenderDeviceMtl =
    {0x8d483e4a, 0x2d53, 0x47b2, {0xb8, 0xd7, 0x27, 0x6f, 0x4c, 0xe5, 0x7f, 0x68}};

/// Exposes Metal-specific functionality of a render device.
class IRenderDeviceMtl : public IRenderDevice
{
public:
    /// Returns the pointer to Metal device (MTLDevice).
    virtual id<MTLDevice> GetMtlDevice() const = 0;

    /// Returns the pointer to Metal command queue (MTLCommandQueue).
    virtual id<MTLCommandQueue> GetMtlCommandQueue() const = 0;

    /// Creates a texture from existing Metal resource
    virtual void DILIGENT_CALL_TYPE CreateTextureFromMtlResource(id<MTLTexture> mtlTexture,
                                                                 RESOURCE_STATE InitialState,
                                                                 ITexture**     ppTexture) = 0;

    /// Creates a buffer from existing Metal resource
    virtual void DILIGENT_CALL_TYPE CreateBufferFromMtlResource(id<MTLBuffer>  mtlBuffer,
                                                                RESOURCE_STATE InitialState,
                                                                IBuffer**      ppBuffer) = 0;
};

} // namespace Diligent
