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| author | Rhys Weatherley <rhys.weatherley@nokia.com> | 2009-09-07 00:18:46 (GMT) |
|---|---|---|
| committer | Rhys Weatherley <rhys.weatherley@nokia.com> | 2009-09-07 00:18:46 (GMT) |
| commit | 6d908473ec1a8c72f4bbb9d772e801024c3a62a0 (patch) | |
| tree | 235c45a19bbc22d0885ad2eb9b6978731e78569d /src/opengl/qgl.h | |
| parent | 203158b2444c9eb98714292d057c0c87a037ce3b (diff) | |
| download | Qt-6d908473ec1a8c72f4bbb9d772e801024c3a62a0.zip Qt-6d908473ec1a8c72f4bbb9d772e801024c3a62a0.tar.gz Qt-6d908473ec1a8c72f4bbb9d772e801024c3a62a0.tar.bz2 | |
Performance: Convert QGLFormat to use implicit sharing
QGLFormat was being deep-copied many times per frame because of
code like this:
if (context()->format().doubleBuffer()) { ...
This change modifies QGLFormat to use implicit sharing to reduce
the overhead of the above type of checks.
Reviewed-by: Sarah Smith
Diffstat (limited to 'src/opengl/qgl.h')
| -rw-r--r-- | src/opengl/qgl.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/opengl/qgl.h b/src/opengl/qgl.h index 89f1676..0d72469 100644 --- a/src/opengl/qgl.h +++ b/src/opengl/qgl.h @@ -255,6 +255,8 @@ public: private: QGLFormatPrivate *d; + void detach(); + friend Q_OPENGL_EXPORT bool operator==(const QGLFormat&, const QGLFormat&); friend Q_OPENGL_EXPORT bool operator!=(const QGLFormat&, const QGLFormat&); }; @@ -277,7 +279,6 @@ public: bool isSharing() const; void reset(); - // ### Qt 5: make format() return a const ref instead QGLFormat format() const; QGLFormat requestedFormat() const; void setFormat(const QGLFormat& format); @@ -443,7 +444,6 @@ public: bool doubleBuffer() const; void swapBuffers(); - // ### Qt 5: make format() return a const ref instead QGLFormat format() const; void setFormat(const QGLFormat& format); |