kicad/3d-viewer/3d_rendering/cpostshader_ssao.h

75 lines
2.5 KiB
C
Raw Normal View History

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2015-2016 Mario Luzeiro <mrluzeiro@ua.pt>
* Copyright (C) 1992-2016 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
*/
/**
* @file cpostshader_ssao.h
* @brief Implements a post shader screen space ambient occlusion on software
*/
#ifndef CPOSTSHADER_SSAO_H
#define CPOSTSHADER_SSAO_H
#include "cpostshader.h"
class CPOSTSHADER_SSAO : public CPOSTSHADER
{
public:
explicit CPOSTSHADER_SSAO( const CCAMERA &aCamera );
//~CPOSTSHADER_SSAO();
// Imported from CPOSTSHADER
SFVEC3F Shade(const SFVEC2I &aShaderPos ) const;
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,
int c1,
int c2) const;
float giFF( const SFVEC2I &aShaderPos,
const SFVEC3F &ddiff,
const SFVEC3F &cnorm,
int c1,
int c2 ) const;
/**
* @brief giColorCurve - Apply a curve transformation to the original color
* it will atenuate the bright colors (works as a gamma function):
* http://fooplot.com/#W3sidHlwZSI6MCwiZXEiOiIxLjAtKDEvKHgqMS4wKzEuMCkpK3gqMC4zMCIsImNvbG9yIjoiIzAwMDAwMCJ9LHsidHlwZSI6MTAwMCwid2luZG93IjpbIi0wLjA2MjE4NDYxNTM4NDYxNTUwNSIsIjEuMTQyOTg0NjE1Mzg0NjE0NiIsIi0wLjEyNzA5OTk5OTk5OTk5OTc3IiwiMS4xMzI2Il19XQ--
* @param aColor input color
* @return transformated color
*/
SFVEC3F giColorCurve( const SFVEC3F &aColor ) const;
};
#endif // CPOSTSHADER_SSAO_H