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Diffstat (limited to 'doc/src/howtos/openvg.qdoc')
| -rw-r--r-- | doc/src/howtos/openvg.qdoc | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/src/howtos/openvg.qdoc b/doc/src/howtos/openvg.qdoc index 9c805bb..f70ed54 100644 --- a/doc/src/howtos/openvg.qdoc +++ b/doc/src/howtos/openvg.qdoc @@ -295,6 +295,16 @@ Convolution, colorize, drop shadow, and blur filters are accelerated using OpenVG operations. + \section2 Scrolling + + By default, accelerated scrolling is not enabled because the impact on + performance is very much tied to the hardware platform. To enable + accelerated scrolling, you should ensure that QVG_BUFFER_SCROLLING is + defined when compiling the QtOpenVG module. + + You should only enable this feature if vgCopyPixels() is known to be + efficient on your hardware platform. + \section1 Known issues Performance of copying the contents of an OpenVG-rendered window to the |