// Copyright 2017 The NXT Authors
//
// 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.

#ifndef BACKEND_D3D12_TEXTURED3D12_H_
#define BACKEND_D3D12_TEXTURED3D12_H_

#include "backend/Texture.h"

#include "backend/d3d12/d3d12_platform.h"

namespace backend { namespace d3d12 {

    class Device;

    DXGI_FORMAT D3D12TextureFormat(nxt::TextureFormat format);

    class Texture : public TextureBase {
      public:
        Texture(TextureBuilder* builder);
        Texture(TextureBuilder* builder, ID3D12Resource* nativeTexture);
        ~Texture();

        DXGI_FORMAT GetD3D12Format() const;
        ID3D12Resource* GetD3D12Resource();
        bool GetResourceTransitionBarrier(nxt::TextureUsageBit currentUsage,
                                          nxt::TextureUsageBit targetUsage,
                                          D3D12_RESOURCE_BARRIER* barrier);

        void TransitionUsageImpl(nxt::TextureUsageBit currentUsage,
                                 nxt::TextureUsageBit targetUsage) override;

      private:
        Device* mDevice;
        ComPtr<ID3D12Resource> mResource = {};
        ID3D12Resource* mResourcePtr = nullptr;
    };

    class TextureView : public TextureViewBase {
      public:
        TextureView(TextureViewBuilder* builder);

        const D3D12_SHADER_RESOURCE_VIEW_DESC& GetSRVDescriptor() const;
        D3D12_RENDER_TARGET_VIEW_DESC GetRTVDescriptor();
        D3D12_DEPTH_STENCIL_VIEW_DESC GetDSVDescriptor();

      private:
        D3D12_SHADER_RESOURCE_VIEW_DESC mSrvDesc;
    };
}}  // namespace backend::d3d12

#endif  // BACKEND_D3D12_TEXTURED3D12_H_