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| author | Rhys Weatherley <rhys.weatherley@nokia.com> | 2010-05-12 22:46:35 (GMT) |
|---|---|---|
| committer | Rhys Weatherley <rhys.weatherley@nokia.com> | 2010-05-12 22:46:35 (GMT) |
| commit | 13c3a19eff8dead535e0ef20f69a311c2925f663 (patch) | |
| tree | 3dcaf3601f64826ed18620a97eb3a6c46e2052ee /doc/src/howtos | |
| parent | f474f0f900d48b41be1a3de1dffe48552ab23372 (diff) | |
| download | Qt-13c3a19eff8dead535e0ef20f69a311c2925f663.zip Qt-13c3a19eff8dead535e0ef20f69a311c2925f663.tar.gz Qt-13c3a19eff8dead535e0ef20f69a311c2925f663.tar.bz2 | |
OpenVG blending modes from VG_KHR_advanced_blending extension
This change introduces the extra blending modes that are
defined in the VG_KHR_advanced_blending extension. Patch
originally provided by contributor:
http://qt.gitorious.org/qt/qt/merge_requests/505
Reviewed-by: Julian de Bhal
Diffstat (limited to 'doc/src/howtos')
| -rw-r--r-- | doc/src/howtos/openvg.qdoc | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/doc/src/howtos/openvg.qdoc b/doc/src/howtos/openvg.qdoc index f70ed54..e448d9c 100644 --- a/doc/src/howtos/openvg.qdoc +++ b/doc/src/howtos/openvg.qdoc @@ -172,8 +172,25 @@ \endlist The other members of QPainter::CompositionMode are not supported - because OpenVG 1.1 does not have an equivalent in its \c VGBlendMode - enumeration. Any attempt to set an unsupported mode will result in + unless the \c{VG_KHR_advanced_blending} extension is present, + in which case the following additional modes are supported: + + \list + \o QPainter::CompositionMode_Overlay + \o QPainter::CompositionMode_ColorDodge + \o QPainter::CompositionMode_ColorBurn + \o QPainter::CompositionMode_HardLight + \o QPainter::CompositionMode_SoftLight + \o QPainter::CompositionMode_Difference + \o QPainter::CompositionMode_Exclusion + \o QPainter::CompositionMode_SourceOut + \o QPainter::CompositionMode_DestinationOut + \o QPainter::CompositionMode_SourceAtop + \o QPainter::CompositionMode_DestinationAtop + \o QPainter::CompositionMode_Xor + \endlist + + Any attempt to set an unsupported mode will result in the actual mode being set to QPainter::CompositionMode_SourceOver. Client applications should avoid using unsupported modes. |