diff options
| author | Trond Kjernåsen <trond@trolltech.com> | 2009-09-08 14:32:30 +0200 |
|---|---|---|
| committer | Trond Kjernåsen <trond@trolltech.com> | 2009-09-08 14:36:18 +0200 |
| commit | 512a265f760c9207b94d7ba61cef9316b23cf4e8 (patch) | |
| tree | 292049ef55db8f80fc785e79ac8d2390b812518e /dist | |
| parent | b8e6f86ed8b27504f22da2167cb6aa9ecf829a71 (diff) | |
Added a public function to enforce usage og the old GL engine.
Some applications that uses a mix of OpenGL and QPainter code may
not work correctly with the new GL 2 engine (e.g. the composition demo).
The same is most likely also true for user apps, therefore we need
a way to enforce the usage of the old GL 1 engine for the sake of
compatibility.
Task-number: 260872
Reviewed-by: Samuel
Diffstat (limited to 'dist')
| -rw-r--r-- | dist/changes-4.6.0 | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/dist/changes-4.6.0 b/dist/changes-4.6.0 index ca984ac2f0..f9984d379d 100644 --- a/dist/changes-4.6.0 +++ b/dist/changes-4.6.0 @@ -54,8 +54,15 @@ information about a particular change. this is that Nokia focuses on OpenGL for desktop hardware accelerated rendering. - - When mixing OpenGL and QPainter calls you need to surround your custom - OpenGL calls with QPainter::beginNativePainting() and + - The default engine used to draw onto OpenGL buffers has changed in + Qt 4.6. The QPaintEngine::OpenGL2 engine is now used as the default + engine. This *may* cause compatibility problems for applications + that use a mix of QPainter and native OpenGL calls to draw into a GL + buffer. Use the QGL::setPreferredPaintEngine() function to enforce + usage of the old GL paint engine. + + - When mixing OpenGL and QPainter calls you need to surround your + custom OpenGL calls with QPainter::beginNativePainting() and QPainter::endNativePainting(). This is to ensure that the paint engine flushes any pending drawing and sets up the GL modelview/projection matrices properly before you can issue custom |