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/*
* 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"
#include "MatrixView.h"
#include "TextureUtil.h"
#include "UserTexture.h"
namespace GFSDK
{
namespace SSAO
{
//--------------------------------------------------------------------------------
class WorldToViewMatrix
{
public:
static bool IsValid(const GFSDK_SSAO_Matrix& WorldToViewMatrix)
{
MatrixView m(WorldToViewMatrix);
// Necessary condition for the matrix to be a valid LookAt matrix
// Note: the matrix may contain a uniform scaling, so we do not check m(3,3)
return (m(0,3) == 0.f &&
m(1,3) == 0.f &&
m(2,3) == 0.f);
}
};
//--------------------------------------------------------------------------------
#if SUPPORT_D3D11
namespace D3D11
{
struct InputNormalInfo
{
GFSDK_SSAO_Status SetData(const GFSDK_SSAO_InputNormalData_D3D11& NormalData)
{
if (!NormalData.pFullResNormalTextureSRV)
{
return GFSDK_SSAO_NULL_ARGUMENT;
}
if (!GFSDK::SSAO::WorldToViewMatrix::IsValid(NormalData.WorldToViewMatrix))
{
return GFSDK_SSAO_INVALID_WORLD_TO_VIEW_MATRIX;
}
Texture.Init(NormalData.pFullResNormalTextureSRV);
return GFSDK_SSAO_OK;
}
SSAO::D3D11::UserTextureSRV Texture;
};
} // namespace D3D11
#endif
//--------------------------------------------------------------------------------
#if SUPPORT_D3D12
namespace D3D12
{
struct InputNormalInfo
{
GFSDK_SSAO_Status SetData(const GFSDK_SSAO_InputNormalData_D3D12& NormalData)
{
if (!NormalData.FullResNormalTextureSRV.pResource)
{
return GFSDK_SSAO_NULL_ARGUMENT;
}
if (!GFSDK::SSAO::WorldToViewMatrix::IsValid(NormalData.WorldToViewMatrix))
{
return GFSDK_SSAO_INVALID_WORLD_TO_VIEW_MATRIX;
}
Texture.Init(&NormalData.FullResNormalTextureSRV);
return GFSDK_SSAO_OK;
}
SSAO::D3D12::UserTextureSRV Texture;
};
} // namespace D3D12
#endif
//--------------------------------------------------------------------------------
#if SUPPORT_GL
namespace GL
{
struct InputNormalInfo
{
GFSDK_SSAO_Status SetData(const GFSDK_SSAO_GLFunctions& GL, const GFSDK_SSAO_InputNormalData_GL& NormalData)
{
if (!GFSDK::SSAO::GL::TextureUtil::HasValidTextureTarget(NormalData.FullResNormalTexture))
{
return GFSDK_SSAO_GL_INVALID_TEXTURE_TARGET;
}
if (!GFSDK::SSAO::WorldToViewMatrix::IsValid(NormalData.WorldToViewMatrix))
{
return GFSDK_SSAO_INVALID_WORLD_TO_VIEW_MATRIX;
}
Texture.Init(GL, NormalData.FullResNormalTexture);
return GFSDK_SSAO_OK;
}
SSAO::GL::UserTexture Texture;
};
} // namespace GL
#endif // SUPPORT_GL
} // namespace SSAO
} // namespace GFSDK
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