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/*
* 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
/// Declaration of Diligent::TextureViewD3D12Impl class
#include "EngineD3D12ImplTraits.hpp"
#include "TextureViewBase.hpp"
#include "DescriptorHeap.hpp"
namespace Diligent
{
/// Texture view object implementation in Direct3D12 backend.
class TextureViewD3D12Impl final : public TextureViewBase<EngineD3D12ImplTraits>
{
public:
using TTextureViewBase = TextureViewBase<EngineD3D12ImplTraits>;
TextureViewD3D12Impl(IReferenceCounters* pRefCounters,
RenderDeviceD3D12Impl* pDevice,
const TextureViewDesc& ViewDesc,
ITexture* pTexture,
DescriptorHeapAllocation&& Descriptor,
DescriptorHeapAllocation&& TexArraySRVDescriptor,
DescriptorHeapAllocation&& MipLevelUAVDescriptors,
bool bIsDefaultView);
~TextureViewD3D12Impl();
IMPLEMENT_QUERY_INTERFACE_IN_PLACE(IID_TextureViewD3D12, TTextureViewBase)
/// Implementation of ITextureViewD3D12::GetCPUDescriptorHandle().
virtual D3D12_CPU_DESCRIPTOR_HANDLE DILIGENT_CALL_TYPE GetCPUDescriptorHandle() override final
{
return m_Descriptor.GetCpuHandle();
}
D3D12_CPU_DESCRIPTOR_HANDLE GetMipLevelUAV(Uint32 Mip)
{
VERIFY_EXPR((m_Desc.Flags & TEXTURE_VIEW_FLAG_ALLOW_MIP_MAP_GENERATION) != 0 && m_MipGenerationDescriptors != nullptr && Mip < m_Desc.NumMipLevels);
return m_MipGenerationDescriptors[1].GetCpuHandle(Mip);
}
D3D12_CPU_DESCRIPTOR_HANDLE GetTexArraySRV()
{
VERIFY_EXPR((m_Desc.Flags & TEXTURE_VIEW_FLAG_ALLOW_MIP_MAP_GENERATION) != 0 && m_MipGenerationDescriptors != nullptr);
return m_MipGenerationDescriptors[0].GetCpuHandle();
}
protected:
/// D3D12 view descriptor handle
DescriptorHeapAllocation m_Descriptor;
// Extra descriptors used for mipmap generation
// [0] == texture array SRV used for mipmap generation
// [1] == mip level UAVs used for mipmap generation
DescriptorHeapAllocation* m_MipGenerationDescriptors = nullptr;
};
} // namespace Diligent
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