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| author | Rhys Weatherley <rhys.weatherley@nokia.com> | 2009-09-16 01:46:41 (GMT) |
|---|---|---|
| committer | Rhys Weatherley <rhys.weatherley@nokia.com> | 2009-09-16 03:05:02 (GMT) |
| commit | 10e1d939d6bf08249304cb2c555be2f74c3a0f02 (patch) | |
| tree | bfda461b0e49c138bc408aa0c799f15ce5907513 /src/opengl/qgl_p.h | |
| parent | a4571547a38d68d6778bf0ebfa4dc26cc3d865a3 (diff) | |
| download | Qt-10e1d939d6bf08249304cb2c555be2f74c3a0f02.zip Qt-10e1d939d6bf08249304cb2c555be2f74c3a0f02.tar.gz Qt-10e1d939d6bf08249304cb2c555be2f74c3a0f02.tar.bz2 | |
Reduce overhead of paint engine-specific pixmap filters
Engine-specific pixmap filters were being created, used, and destroyed
every time draw() was called on QPixmapColorizeFilter, QPixmapBlurFilter,
and so on. This had a heavy performance penalty and made it difficult
for the GL paint engine to cache shaders from one request to the next.
A generic filter can request an engine-specific filter that matches its
parameters. The engine can either create a new one or return a previously
allocated filter object.
Ownership of engine-specific pixmap filter objects is moved to the
paint engine itself.
Reviewed-by: Andrew den Exter
Reviewed-by: Michael Brasser
Reviewed-by: Michael Goddard
Reviewed-by: Sarah Smith
Diffstat (limited to 'src/opengl/qgl_p.h')
| -rw-r--r-- | src/opengl/qgl_p.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/src/opengl/qgl_p.h b/src/opengl/qgl_p.h index 2b74e69..7269195 100644 --- a/src/opengl/qgl_p.h +++ b/src/opengl/qgl_p.h @@ -352,8 +352,6 @@ public: #endif static void setCurrentContext(QGLContext *context); - - QPixmapFilter *createPixmapFilter(int type) const; }; // ### make QGLContext a QObject in 5.0 and remove the proxy stuff |