OpenGL issues with Qt 4.6 master

[profoX]

I am experiencing some weird OpenGL issues in the Qt 4.6 master branch.
I've been experiencing them for a rather long time now.
I was wondering whether it's just me, or whether more of you experience this?

Here's two screenshots:



This is what I'm seeing in the terminal a lot:

QGLShader::link: "Fragment shader(s) linked, vertex shader(s) linked.
 "
QGLShader::link: "Fragment shader(s) linked, vertex shader(s) linked.
 "

QGLShader::link: "Fragment shader(s) linked, vertex shader(s) linked.
 "
QGLShader::link: "Fragment shader(s) linked, vertex shader(s) linked.
 "

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My graphics card is an ATI Mobility HD 2600 using fglrx driver on Linux 2.6 system.

The Qt 4.5 OpenGL examples work fine when compiled with Qt 4.5.