/* 
* Copyright (c) 2008-2017, NVIDIA CORPORATION. All rights reserved. 
* 
* NVIDIA CORPORATION and its licensors retain all intellectual property 
* and proprietary rights in and to this software, related documentation 
* and any modifications thereto. Any use, reproduction, disclosure or 
* distribution of this software and related documentation without an express 
* license agreement from NVIDIA CORPORATION is strictly prohibited. 
*/

#pragma once
#include "Common.h"

namespace GFSDK
{
namespace SSAO
{
namespace D3D11
{

#if SUPPORT_D3D11

//--------------------------------------------------------------------------------
class AppState
{
public:
    AppState()
    {
        memset(this, 0, sizeof(*this));
    }

    void Save(ID3D11DeviceContext* pDeviceContext);
    void Restore(ID3D11DeviceContext* pDeviceContext);
    static void UnbindSRVs(ID3D11DeviceContext* pDeviceContext);

private:
    static const int NumPSShaderResourceViews = 4;
    static const int NumPSSamplers = 2;
    static const int NumGSConstantBuffers = 4;
    static const int NumPSConstantBuffers = 4;
    static const int NumRenderTargetViews = 8;

    D3D11_VIEWPORT Viewport;
    D3D11_PRIMITIVE_TOPOLOGY Topology;
    ID3D11InputLayout* pInputLayout;
    ID3D11RasterizerState* pRasterizerState;

    ID3D11VertexShader* pVS;
    ID3D11HullShader* pHS;
    ID3D11DomainShader* pDS;
    ID3D11GeometryShader* pGS;
    ID3D11PixelShader* pPS;
    ID3D11ComputeShader* pCS;

    ID3D11ShaderResourceView* pPSShaderResourceViews[NumPSShaderResourceViews];
    ID3D11SamplerState* pPSSamplers[NumPSSamplers];
    ID3D11Buffer* pGSConstantBuffers[NumGSConstantBuffers];
    ID3D11Buffer* pPSConstantBuffers[NumPSConstantBuffers];

    ID3D11DepthStencilState* pDepthStencilState;
    UINT StencilRef;
    ID3D11BlendState* pBlendState;
    FLOAT BlendFactor[4];
    UINT SampleMask;
    ID3D11RenderTargetView* pRenderTargetViews[NumRenderTargetViews];
    ID3D11DepthStencilView* pDepthStencilView;
};

#endif // SUPPORT_D3D11

} // namespace D3D11
} // namespace SSAO
} // namespace GFSDK