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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#ifndef _GPUShadowFilter_H_
#define _GPUShadowFilter_H_
#include "../api.h"
#include "GPUFilter.h"
#include "GLShaderParam.h"
#include "GLTexture.h"
#include "../base/GLMHelper.h"
namespace avg {
class AVG_API GPUShadowFilter: public GPUFilter
{
public:
GPUShadowFilter(const IntPoint& size, const glm::vec2& offset, float stdDev,
float opacity, const Pixel32& color);
virtual ~GPUShadowFilter();
void setParams(const glm::vec2& offset, float stdDev, float opacity,
const Pixel32& color);
virtual void applyOnGPU(GLTexturePtr pSrcTex);
private:
void setDimensions(IntPoint size, float stdDev, const glm::vec2& offset);
glm::vec2 m_Offset;
float m_StdDev;
float m_Opacity;
Pixel32 m_Color;
GLTexturePtr m_pGaussCurveTex;
ImagingProjectionPtr m_pProjection2;
FloatGLShaderParamPtr m_pHorizWidthParam;
IntGLShaderParamPtr m_pHorizRadiusParam;
IntGLShaderParamPtr m_pHorizTextureParam;
IntGLShaderParamPtr m_pHorizKernelTexParam;
Vec2fGLShaderParamPtr m_pHorizOffsetParam;
FloatGLShaderParamPtr m_pVertWidthParam;
IntGLShaderParamPtr m_pVertRadiusParam;
IntGLShaderParamPtr m_pVertTextureParam;
IntGLShaderParamPtr m_pVertKernelTexParam;
ColorGLShaderParamPtr m_pVertColorParam;
IntGLShaderParamPtr m_pVertOrigTexParam;
Vec2fGLShaderParamPtr m_pVertDestPosParam;
Vec2fGLShaderParamPtr m_pVertDestSizeParam;
};
typedef boost::shared_ptr<GPUShadowFilter> GPUShadowFilterPtr;
}
#endif
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