diff options
Diffstat (limited to 'src/mtexturepixmapitem_egl.cpp')
| -rw-r--r-- | src/mtexturepixmapitem_egl.cpp | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/src/mtexturepixmapitem_egl.cpp b/src/mtexturepixmapitem_egl.cpp index c5487e7..b60a28b 100644 --- a/src/mtexturepixmapitem_egl.cpp +++ b/src/mtexturepixmapitem_egl.cpp @@ -251,9 +251,38 @@ void MTexturePixmapItem::cleanup() XFreePixmap(QX11Info::display(), d->windowp); } -void MTexturePixmapItem::updateWindowPixmap(XRectangle *rects, int num) +void MTexturePixmapItem::updateWindowPixmap(XRectangle *rects, int num, + Time when) { - if (hasTransitioningWindow() || d->direct_fb_render || !windowVisible() + // When a window is in transitioning limit the number of updates + // to @limit/@expiry miliseconds. + const unsigned expiry = 1000; + const int limit = 10; + + if (hasTransitioningWindow()) { + // Limit the number of damages we're willing to process if we're + // in the middle of a transition, so the competition for the GL + // resources will be less tight. + if (d->pastDamages) { + // Forget about pastDamages we received long ago. + while (d->pastDamages->size() > 0 + && d->pastDamages->first() + expiry < when) + d->pastDamages->removeFirst(); + if (d->pastDamages->size() >= limit) + // Too many damages in the given timeframe, throttle. + return; + } else + d->pastDamages = new QList<Time>; + // Can afford this damage, but recoed when we received it, + // so to know when to forget about them. + d->pastDamages->append(when); + } else if (d->pastDamages) { + // The window is not transitioning, forget about all pastDamages. + delete d->pastDamages; + d->pastDamages = NULL; + } + + if (d->direct_fb_render || !windowVisible() || propertyCache()->isInputOnly()) return; |