yukijoou/kwin
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Prevent jerkiness of the first two frames of the logout blur effect by

Browse source 
starting the animation after the render target has been created.

svn path=/trunk/KDE/kdebase/workspace/; revision=1030718
This commit is contained in:
Lucas Murray 2009-10-03 07:06:51 +00:00
parent 53986fa859
commit 4d1bdd5a63
2 changed files with 17 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
effects/logout/logout.cpp
View file

@ -63,6 +63,7 @@ LogoutEffect::~LogoutEffect()
void LogoutEffect::reconfigure( ReconfigureFlags )
{
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
frameDelay = 0;
KConfigGroup conf = effects->effectConfig( "Logout" );
useBlur = conf.readEntry( "UseBlur", true );
delete blurTexture;
@ -102,14 +103,24 @@ void LogoutEffect::prePaintScreen( ScreenPrePaintData& data, int time )
blurTarget = new GLRenderTarget( blurTexture );
if( blurTarget->valid() )
blurSupported = true;
// As creating the render target takes time it can cause the first two frames of the
// blur animation to be jerky. For this reason we only start the animation after the
// third frame.
frameDelay = 2;
}
}
#endif
if( logoutWindow != NULL && !logoutWindowClosed )
progress = qMin( 1.0, progress + time / animationTime( 2000.0 ));
else if( progress > 0.0 )
progress = qMax( 0.0, progress - time / animationTime( 500.0 ));
if( frameDelay )
--frameDelay;
else
{
if( logoutWindow != NULL && !logoutWindowClosed )
progress = qMin( 1.0, progress + time / animationTime( 2000.0 ));
else if( progress > 0.0 )
progress = qMax( 0.0, progress - time / animationTime( 500.0 ));
}
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
if( blurSupported && progress > 0.0 )
@ -222,7 +233,7 @@ void LogoutEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data
void LogoutEffect::postPaintScreen()
{
if( progress != 0.0 && progress != 1.0 )
if(( progress != 0.0 && progress != 1.0 ) || frameDelay )
{
effects->addRepaintFull();
}

1
effects/logout/logout.h
View file

@ -54,6 +54,7 @@ class LogoutEffect
bool logoutWindowPassed;
#ifdef KWIN_HAVE_OPENGL_COMPOSITING
int frameDelay;
bool blurSupported, useBlur;
GLTexture* blurTexture;
GLRenderTarget* blurTarget;