The effect did not check whether the ShaderManager is valid causing
a null pointer access when trying to use the shader.
Additionally this change moves the Shader init into the close window
slot as close window referrenced windows without checking whether the
effect would work. If the effect would not work each closed window
would be referrenced without any chance to being unreffed again as this
code is in a block checking whether the effect is valid.
BUG: 291390
FIXED-IN: 4.8.0
This is a condensed version of Martin's patch that fixes a high cpu
usage in KWin and X. It seems to be due to a window being created and
deleted at almost the same time, such that the fade effect never quits.
The bug was reliably reproducable with starting Amarok.
CCBUG: 290025
CCBUG: 288948
Too many crash reports in the fglrx driver when using ARB shaders.
It's a pity to disable functionality for all fglrx users, but it's
better than crash reports.
Blur effect can still be enabled manually and Lanczos can still be
enabled through the environment variable.
REVIEW: 103556
CCBUG: 270818
CCBUG: 286795
also
- replace QHash::operator[]
- replace double by float (-> ARM, and we don't need that precision)
- weaken some value checks ("== 1.0f")
- fix last paint of hiding windows (w->addRepaintFull() trap)
REVIEW: 103404
Finally it is possible :-) If it causes an impact on performance
during the release candidates I'm going to revert.
REVIEW: 103375
BUG: 255106
FIXED-IN: 4.8.0
Make use of new extension of protocol for magic number -1.
If offset is -1 KWin has to decide the offset. This fixes all the
incorrect animations and allows us to perform clipping again by
filtering out the window quads which should not be visible.
Additionally the effect now sanitizes the offset. That is for e.g.
Yakuake setting an offset of 0, but there is a strut on the top
corner causing Yakuake not to appear on 0, but with an offset of
the strut. Such cases are now considered as well and the animation
is fixed.
REVIEW: 103367
BUG: 287602
CCBUG: 261159
CCBUG: 278760
FIXED-IN: 4.8.0
The windows, that are considered to be always on top and that are on
all desktops, should also be always painted on top of everything while
switching the desktop.
