AuroraMiddleware/qt5base-lts
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
16,692 Commits 4 Branches 0 Tags 339 MiB
C++ 84.2%
HTML 5.1%
C 4.2%
CMake 2.9%
Objective-C++ 2%
Other 1%
407eee51e6
Go to file
Allan Sandfeld Jensen 407eee51e6 Optimize INV_PREMUL 
Our inverse premultiply is rather unoptimized. It's major weakness is
using three divide operation which are the slowest integer operations.

This patch reduces the three divisions to just one but using an
approximation that is accurate for all uchar values.

The patch also adds a general short-cut for alpha==255.

Together these improvements makes it 2 to 16 times faster depending on
how many 0 and 255 alpha values are encountered.

Change-Id: I96d7098a1bc320793b0d0526637acd1fdb5a43eb
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
2014-01-16 03:00:45 +01:00
bin Merge "Merge remote-tracking branch 'origin/release' into stable" into refs/staging/stable 2013-06-15 22:39:25 +02:00
config.tests Remove runtime detection of Neon on ARM CPUs 2014-01-16 02:59:49 +01:00
dist Merge remote-tracking branch 'origin/stable' into dev 2013-12-24 00:56:59 +01:00
doc Doc: Move XML example documentation to correct location 2013-12-20 10:37:43 +01:00
examples expand tabs and related whitespace fixes in *.{cpp,h,qdoc} 2014-01-13 22:46:50 +01:00
lib Initial import from the monolithic Qt. 2011-04-27 12:05:43 +02:00
mkspecs Ensure that the mkspec and source dirs are passed to moc on Windows 2014-01-16 03:00:29 +01:00
qmake expand tabs and related whitespace fixes in *.{cpp,h,qdoc} 2014-01-13 22:46:50 +01:00
src Optimize INV_PREMUL 2014-01-16 03:00:45 +01:00
tests remove qt_windows.h from qwinoverlappedionotifier_p.h 2014-01-15 18:43:20 +01:00
tools expand tabs and related whitespace fixes in *.{cpp,h,qdoc} 2014-01-13 22:46:50 +01:00
util Update the Unicode Data and Algorithms up to Unicode 6.3.0 2014-01-14 15:38:57 +01:00
.gitattributes Update the git-archive export options 2012-09-07 15:39:31 +02:00
.gitignore GitIgnore updates 2013-12-09 17:28:18 +01:00
.qmake.conf Enable -Werror for all of qtbase 2013-09-04 01:50:10 +02:00
.tag Update the git-archive export options 2012-09-07 15:39:31 +02:00
configure Remove runtime detection of Neon on ARM CPUs 2014-01-16 02:59:49 +01:00
configure.bat get rid of syncqt wrapper scripts 2013-05-13 21:54:48 +02:00
header.BSD Update copyright year in Digia's license headers 2013-01-18 09:07:35 +01:00
header.FDL Update copyright year in Digia's license headers 2013-01-18 09:07:35 +01:00
header.LGPL Update copyright year in Digia's license headers 2013-01-18 09:07:35 +01:00
header.LGPL-ONLY Update copyright year in Digia's license headers 2013-01-18 09:07:35 +01:00
INSTALL INSTALL: Fix URL of Installing Qt documentation 2013-04-11 16:09:07 +02:00
LGPL_EXCEPTION.txt Change copyrights from Nokia to Digia 2012-09-22 19:20:11 +02:00
LICENSE.FDL Initial import from the monolithic Qt. 2011-04-27 12:05:43 +02:00
LICENSE.GPL Add the LICENSE.GPL file to the module referenced from license headers 2012-05-20 22:41:08 +02:00
LICENSE.LGPL Update copyright year in Digia's license headers 2013-01-18 09:07:35 +01:00
LICENSE.PREVIEW.COMMERCIAL Update LICENSE.PREVIEW.COMMERCIAL license 2013-06-03 20:04:26 +02:00
qtbase.pro Merge remote-tracking branch 'origin/release' into stable 2013-12-05 17:42:33 +01:00
sync.profile generate qfeatures.h at build time 2013-10-29 15:37:58 +01:00