diff options
| author | Allan Sandfeld Jensen <allan.jensen@digia.com> | 2014-01-29 11:41:31 +0100 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2014-02-10 12:49:06 +0100 |
| commit | a7b8ef08415b8056661c3db5950842ee546891b9 (patch) | |
| tree | f010dbec1421980535be48705b51b7c62d079a16 /src/corelib/global/qprocessordetection.h | |
| parent | 143d591aab7a2d244913e9d13f079de05eb7a65c (diff) | |
Export optimized premultiply and unpremultiply methods
This patch optimizes the unpremultiply method further by using a
lookup table to avoid any divisions at all.
The opportunity is taken to export both premultiply and unpremultiply
since they are commonly used methods relevant to the exported QRgb type
that can be both premultiplied and unpremultipled ARGB.
[ChangeLog][QtGui][QColor] Exported highly optimized methods for
premultiply and unpremultiply of QRgb values.
Change-Id: I658bcf57b0bc73c34c1765b64617d43b63ae820b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
Diffstat (limited to 'src/corelib/global/qprocessordetection.h')
| -rw-r--r-- | src/corelib/global/qprocessordetection.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/src/corelib/global/qprocessordetection.h b/src/corelib/global/qprocessordetection.h index a5eff7c7ce..cf7ee1b7aa 100644 --- a/src/corelib/global/qprocessordetection.h +++ b/src/corelib/global/qprocessordetection.h @@ -331,8 +331,7 @@ the size of the register). On some architectures where a pointer could be smaller than the register, the macro is defined above. - Try our best to define it to a literal, so it can be used in the preprocessor, - but fall back to sizeof(void*) on practically every 32-bit build. + Falls back to QT_POINTER_SIZE if not set explicitly for the platform. */ #ifndef Q_PROCESSOR_WORDSIZE # ifdef __SIZEOF_POINTER__ @@ -341,7 +340,7 @@ # elif defined(_LP64) || defined(__LP64__) || defined(WIN64) || defined(_WIN64) # define Q_PROCESSOR_WORDSIZE 8 # else -# define Q_PROCESSOR_WORDSIZE sizeof(void*) +# define Q_PROCESSOR_WORDSIZE QT_POINTER_SIZE # endif #endif |