[Qt-interest] Using QPainter in QGLWidget on OSX with Radeon cards draws in black ...

[David Geldreich]

Hi all,

we are experiencing a strange behavior with Qt 4.7.1 (reproduced with Qt 4.6.4, Qt 4.7.3) on OSX SnowLeopard (10.6) and Leopard (10.5) when using an ATI Radeon graphics card.

We discovered this by using a QGLWidget as QGraphicsView's viewport.

When using a QPainter in a QGLWidget, the color seems to be "ignored", all the primitives are drawn in black.

I attach an example to reproduce. If I force OpenGL paint engine instead of OpenGL2, the problem "disappear" !!

Anyone experienced a similar problem ?

Regards.


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