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

Clearing of the whole buffer is not necessary anymore, at least not

Browse source 
in the simple cases. Improves drawing performance.


svn path=/branches/work/kwin_composite/; revision=608458
This commit is contained in:
Luboš Luňák 2006-11-27 16:16:34 +00:00
parent a4d6273de0
commit 2fa320c9b8
1 changed files with 19 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
scene_opengl.cpp
View file

@ -443,8 +443,6 @@ void SceneOpenGL::paint( QRegion damage, ToplevelList toplevels )
grabXServer(); grabXServer();
glXWaitX(); glXWaitX();
glPushMatrix(); glPushMatrix();
glClearColor( 0, 0, 0, 1 );
glClear( GL_COLOR_BUFFER_BIT );
int mask = 0; int mask = 0;
paintScreen( &mask, &damage ); // call generic implementation paintScreen( &mask, &damage ); // call generic implementation
glPopMatrix(); glPopMatrix();
@ -540,9 +538,26 @@ void SceneOpenGL::paintGenericScreen( int mask, ScreenPaintData data )
glPopMatrix(); glPopMatrix();
} }
void SceneOpenGL::paintBackground( QRegion ) void SceneOpenGL::paintBackground( QRegion region )
{ {
// TODO? if( region == infiniteRegion())
{
glClearColor( 1, 1, 1, 1 ); // white
glClear( GL_COLOR_BUFFER_BIT );
}
else
{
glColor4f( 1, 1, 1, 1 ); // white
glBegin( GL_QUADS );
foreach( QRect r, region.rects())
{
glVertex2i( r.x(), r.y());
glVertex2i( r.x() + r.width(), r.y());
glVertex2i( r.x() + r.width(), r.y() + r.height());
glVertex2i( r.x(), r.y() + r.height());
}
glEnd();
}
} }
void SceneOpenGL::windowAdded( Toplevel* c ) void SceneOpenGL::windowAdded( Toplevel* c )