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Added blurring during the logout effect. As this is done entirely using

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mipmaps the quality isn't the best. Might add a shader later that will
generate the final image so it uses mipmaps for realtime blurring while
using a high quality blur at the end.

svn path=/trunk/KDE/kdebase/workspace/; revision=923246
This commit is contained in:
Lucas Murray 2009-02-08 14:07:00 +00:00
parent 13c2f21e9d
commit 8f8c1d31ba
2 changed files with 97 additions and 0 deletions
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85
effects/logout/logout.cpp
View file

@ -3,6 +3,7 @@
This file is part of the KDE project.
Copyright (C) 2007 Lubos Lunak <l.lunak@kde.org>
Copyright (C) 2009 Lucas Murray <lmurray@undefinedfire.com>
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
@ -40,6 +41,38 @@ LogoutEffect::LogoutEffect()
Atom hack = XInternAtom( display(), "_KWIN_LOGOUT_EFFECT", False );
XChangeProperty( display(), sel, hack, hack, 8, PropModeReplace, (unsigned char*)&hack, 1 );
// the atom is not removed when effect is destroyed, this is temporary anyway
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
blurSupported = false;
// If NPOT textures are not supported use the nearest power-of-two sized
// texture. It wastes memory, but it's possible to support systems without
// NPOT textures this way.
int texw = displayWidth();
int texh = displayHeight();
if( !GLTexture::NPOTTextureSupported() )
{
kWarning( 1212 ) << "NPOT textures not supported, wasting some memory";
texw = nearestPowerOfTwo( texw );
texh = nearestPowerOfTwo( texh );
}
// Create texture and render target
blurTexture = new GLTexture( texw, texh );
blurTexture->setFilter( GL_LINEAR_MIPMAP_LINEAR );
blurTexture->setWrapMode( GL_CLAMP_TO_EDGE );
blurTarget = new GLRenderTarget( blurTexture );
if( blurTarget->valid() )
blurSupported = true;
#endif
}
LogoutEffect::~LogoutEffect()
{
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
delete blurTexture;
delete blurTarget;
#endif
}
void LogoutEffect::prePaintScreen( ScreenPrePaintData& data, int time )
@ -48,9 +81,27 @@ void LogoutEffect::prePaintScreen( ScreenPrePaintData& data, int time )
progress = qBound( 0., progress + time / animationTime( 2000. ), 1. );
else if( progress != 0 )
progress = qBound( 0., progress - time / animationTime( 500. ), 1. );
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
if( blurSupported && progress > 0.0 )
{
data.mask |= PAINT_SCREEN_WITH_TRANSFORMED_WINDOWS;
effects->pushRenderTarget( blurTarget );
}
#endif
effects->prePaintScreen( data, time );
}
void LogoutEffect::prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time )
{
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
if( blurSupported && progress > 0.0 && w == logout_window )
w->disablePainting( EffectWindow::PAINT_DISABLED );
#endif
effects->prePaintWindow( w, data, time );
}
void LogoutEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
{
if( w != logout_window && progress != 0 )
@ -73,6 +124,40 @@ void LogoutEffect::postPaintScreen()
if( progress != 0 && progress != 1 )
effects->addRepaintFull();
effects->postPaintScreen();
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
if( blurSupported && progress > 0.0 )
{
assert( effects->popRenderTarget() == blurTarget );
// Render the blurred scene
blurTexture->bind();
GLfloat bias[1];
glGetTexEnvfv( GL_TEXTURE_FILTER_CONTROL, GL_TEXTURE_LOD_BIAS, bias );
glTexEnvf( GL_TEXTURE_FILTER_CONTROL, GL_TEXTURE_LOD_BIAS, progress * 2.75 );
glBegin(GL_QUADS);
glTexCoord2f( 0.0, 0.0 );
glVertex2f( 0.0, displayHeight() );
glTexCoord2f( 1.0, 0.0 );
glVertex2f( displayWidth(), displayHeight() );
glTexCoord2f( 1.0, 1.0 );
glVertex2f( displayWidth(), 0.0 );
glTexCoord2f( 0.0, 1.0 );
glVertex2f( 0.0, 0.0 );
glEnd();
glTexEnvf( GL_TEXTURE_FILTER_CONTROL, GL_TEXTURE_LOD_BIAS, bias[0] );
blurTexture->unbind();
// Render the logout window
if( logout_window )
{
int mask = PAINT_WINDOW_OPAQUE; // TODO: Can we have a translucent logout window?
QRect region = infiniteRegion();
WindowPaintData data( logout_window );
effects->drawWindow( logout_window, mask, region, data );
}
}
#endif
}
void LogoutEffect::windowAdded( EffectWindow* w )

12
effects/logout/logout.h
View file

@ -3,6 +3,7 @@
This file is part of the KDE project.
Copyright (C) 2007 Lubos Lunak <l.lunak@kde.org>
Copyright (C) 2009 Lucas Murray <lmurray@undefinedfire.com>
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
@ -27,13 +28,18 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
namespace KWin
{
class GLRenderTarget;
class GLTexture;
class LogoutEffect
: public Effect
{
public:
LogoutEffect();
~LogoutEffect();
virtual void prePaintScreen( ScreenPrePaintData& data, int time );
virtual void postPaintScreen();
virtual void prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time );
virtual void paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data );
virtual void windowAdded( EffectWindow* w );
virtual void windowClosed( EffectWindow* w );
@ -41,6 +47,12 @@ class LogoutEffect
bool isLogoutDialog( EffectWindow* w );
double progress; // 0-1
EffectWindow* logout_window;
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
bool blurSupported;
GLTexture* blurTexture;
GLRenderTarget* blurTarget;
#endif
};
} // namespace