4036f179fc
* this effect is way cheaper than blur, don't cache it * use its own atom * also pass the matrix in the x property * remove remnants of the cache * do just a single pass * get rid of config ui remnants
104 lines
2.4 KiB
C++
104 lines
2.4 KiB
C++
/*
|
|
* Copyright © 2010 Fredrik Höglund <fredrik@kde.org>
|
|
*
|
|
* 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; see the file COPYING. if not, write to
|
|
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef CONTRASTSHADER_H
|
|
#define CONTRASTSHADER_H
|
|
|
|
#include <kwinglutils.h>
|
|
|
|
class QMatrix4x4;
|
|
|
|
namespace KWin
|
|
{
|
|
|
|
class ContrastShader
|
|
{
|
|
public:
|
|
ContrastShader();
|
|
virtual ~ContrastShader();
|
|
|
|
static ContrastShader *create();
|
|
|
|
bool isValid() const {
|
|
return mValid;
|
|
}
|
|
|
|
// Sets the radius in pixels
|
|
void setStrength(int strength);
|
|
int strength() const {
|
|
return mStrength;
|
|
}
|
|
|
|
virtual void setColorMatrix(const QMatrix4x4 &matrix) = 0;
|
|
|
|
virtual void setTextureMatrix(const QMatrix4x4 &matrix) = 0;
|
|
virtual void setModelViewProjectionMatrix(const QMatrix4x4 &matrix) = 0;
|
|
|
|
virtual void bind() = 0;
|
|
virtual void unbind() = 0;
|
|
|
|
protected:
|
|
float gaussian(float x, float sigma) const;
|
|
void setIsValid(bool value) {
|
|
mValid = value;
|
|
}
|
|
virtual void init() = 0;
|
|
virtual void reset() = 0;
|
|
|
|
private:
|
|
int mStrength;
|
|
bool mValid;
|
|
};
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
class GLSLContrastShader : public ContrastShader
|
|
{
|
|
public:
|
|
GLSLContrastShader();
|
|
~GLSLContrastShader();
|
|
|
|
void bind();
|
|
void unbind();
|
|
void setColorMatrix(const QMatrix4x4 &matrix);
|
|
void setTextureMatrix(const QMatrix4x4 &matrix);
|
|
void setModelViewProjectionMatrix(const QMatrix4x4 &matrix);
|
|
|
|
static bool supported();
|
|
|
|
protected:
|
|
void init();
|
|
void reset();
|
|
|
|
private:
|
|
GLShader *shader;
|
|
int mvpMatrixLocation;
|
|
int textureMatrixLocation;
|
|
int colorMatrixLocation;
|
|
int pixelSizeLocation;
|
|
};
|
|
|
|
|
|
} // namespace KWin
|
|
|
|
#endif
|
|
|