post_shader_ssao.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015-2016 Mario Luzeiro <[email protected]>
 * Copyright (C) 2015-2024 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
#ifndef POST_SHADER_SSAO_H
#define POST_SHADER_SSAO_H
 
 
#include "post_shader.h"
 
 
class POST_SHADER_SSAO : public POST_SHADER
{
public:
 explicit POST_SHADER_SSAO( const CAMERA& aCamera );
 
 SFVEC3F Shade(const SFVEC2I& aShaderPos ) const override;
 SFVEC4F ApplyShadeColor( const SFVEC2I& aShaderPos, const SFVEC4F& aInputColor,
 const SFVEC3F& aShadeColor ) const override;
 
 SFVEC3F Blur( const SFVEC2I& aShaderPos ) const;
 
 void SetShadedBuffer( SFVEC3F* aShadedBuffer )
 {
 m_shadedBuffer = aShadedBuffer;
 }
 
 void SetShadowsEnabled( bool aIsShadowsEnabled )
 {
 m_isUsingShadows = aIsShadowsEnabled;
 }
 
private:
 SFVEC3F posFromDepth( const SFVEC2F& coord ) const;
 
 float ec_depth( const SFVEC2F& tc ) const;
 
 float aoFF( const SFVEC2I& aShaderPos, const SFVEC3F& ddiff, const SFVEC3F& cnorm,
 const float aShadowAtSamplePos, const float aShadowAtCenterPos,
 int c1, int c2 ) const;
 
 float giFF( const SFVEC2I& aShaderPos, const SFVEC3F& ddiff, const SFVEC3F& cnorm,
 const float aShadow, int c1, int c2 ) const;
 
 SFVEC3F giColorCurve( const SFVEC3F& aColor ) const;
 SFVEC4F giColorCurve( const SFVEC4F& aColor ) const;
 SFVEC3F giColorCurveShade( const SFVEC4F& aColor ) const;
 
 SFVEC3F* m_shadedBuffer;
 
 bool m_isUsingShadows;
};
 
 
#endif // POST_SHADER_SSAO_H