213833fc7f
This fixes the artefacts appearing when only part of the screen is updated. This version also brings ton of optimizations which might well increase performance 2 or 3 times on slower cards: - Windows are not drawn twice anymore. Now they're drawn only to render target and later changed parts of the render target are copied back onto screen. - Shaders have been optimized. Some calculations moved from pixel shader to vertex shader. - For ARGB windows, if window's opacity is 0 then it will stay transparent instead of being replaced by blurred background. - Blur effect should now play nicer with other effects, e.g. shadows. svn path=/trunk/KDE/kdebase/workspace/; revision=748502
86 lines
2.3 KiB
C++
86 lines
2.3 KiB
C++
/********************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2007 Rivo Laks <rivolaks@hot.ee>
|
|
|
|
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, see <http://www.gnu.org/licenses/>.
|
|
*********************************************************************/
|
|
|
|
#ifndef KWIN_BLUR_H
|
|
#define KWIN_BLUR_H
|
|
|
|
// Include with base class for effects.
|
|
#include <kwineffects.h>
|
|
|
|
#include <QRegion>
|
|
|
|
template< class T > class QVector;
|
|
|
|
|
|
namespace KWin
|
|
{
|
|
|
|
class GLRenderTarget;
|
|
class GLTexture;
|
|
class GLShader;
|
|
|
|
/**
|
|
* Blurs the background of translucent windows
|
|
**/
|
|
class BlurEffect : public Effect
|
|
{
|
|
public:
|
|
BlurEffect();
|
|
~BlurEffect();
|
|
|
|
virtual void prePaintScreen( ScreenPrePaintData& data, int time );
|
|
virtual void paintScreen( int mask, QRegion region, ScreenPaintData& data );
|
|
|
|
virtual void prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time );
|
|
virtual void drawWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data );
|
|
|
|
static bool supported();
|
|
|
|
protected:
|
|
bool loadData();
|
|
GLShader* loadShader(const QString& name);
|
|
void updateBlurTexture(const QVector<QRect>& rects);
|
|
void updateBlurTexture(const QRegion& region);
|
|
|
|
QRegion expandedRegion( const QRegion& r ) const;
|
|
|
|
private:
|
|
GLTexture* mSceneTexture;
|
|
GLTexture* mTmpTexture;
|
|
GLTexture* mBlurTexture;
|
|
GLRenderTarget* mSceneTarget;
|
|
GLRenderTarget* mTmpTarget;
|
|
GLRenderTarget* mBlurTarget;
|
|
GLShader* mBlurShader;
|
|
GLShader* mWindowShader;
|
|
bool mValid;
|
|
int mBlurRadius;
|
|
|
|
int mTransparentWindows;
|
|
|
|
QRegion mBlurDirty;
|
|
QRegion mScreenDirty;
|
|
|
|
QRegion mBlurMask;
|
|
};
|
|
|
|
} // namespace
|
|
|
|
#endif
|