/*
 *  Copyright 2019-2021 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
 *  
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *  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::BottomLevelASVkImpl class

#include "RenderDeviceVk.h"
#include "RenderDeviceVkImpl.hpp"
#include "BottomLevelASVk.h"
#include "BottomLevelASBase.hpp"
#include "VulkanUtilities/VulkanObjectWrappers.hpp"

namespace Diligent
{

class BottomLevelASVkImpl final : public BottomLevelASBase<IBottomLevelASVk, RenderDeviceVkImpl>
{
public:
    using TBottomLevelASBase = BottomLevelASBase<IBottomLevelASVk, RenderDeviceVkImpl>;

    BottomLevelASVkImpl(IReferenceCounters*      pRefCounters,
                        RenderDeviceVkImpl*      pRenderDeviceVk,
                        const BottomLevelASDesc& Desc);
    BottomLevelASVkImpl(IReferenceCounters*        pRefCounters,
                        RenderDeviceVkImpl*        pRenderDeviceVk,
                        const BottomLevelASDesc&   Desc,
                        RESOURCE_STATE             InitialState,
                        VkAccelerationStructureKHR vkBLAS);
    ~BottomLevelASVkImpl();

    /// Implementation of IBottomLevelAS::GetNativeHandle() in Vulkan backend.
    virtual void* DILIGENT_CALL_TYPE GetNativeHandle() override final
    {
        auto Handle = GetVkBLAS();
        return reinterpret_cast<void*>(Handle);
    }

    /// Implementation of IBottomLevelASVk::GetVkBLAS().
    virtual VkAccelerationStructureKHR DILIGENT_CALL_TYPE GetVkBLAS() const override { return m_VulkanBLAS; }

    /// Implementation of IBottomLevelASVk::GetVkDeviceAddress().
    virtual VkDeviceAddress DILIGENT_CALL_TYPE GetVkDeviceAddress() const override { return m_DeviceAddress; }

    IMPLEMENT_QUERY_INTERFACE_IN_PLACE(IID_BottomLevelASVk, TBottomLevelASBase)

private:
    VkDeviceAddress                         m_DeviceAddress = 0;
    VulkanUtilities::AccelStructWrapper     m_VulkanBLAS;
    VulkanUtilities::BufferWrapper          m_VulkanBuffer;
    VulkanUtilities::VulkanMemoryAllocation m_MemoryAllocation;
    VkDeviceSize                            m_MemoryAlignedOffset = 0;
};

} // namespace Diligent
