I'm trying to do software-based OpenGL rendering in a QGLWidget under
Windows. Thus I've tried to use MESA 7.0.3 as OpenGL software renderer.
Using GLUT applications in conjunction with MESA works fine, as long as
I don't use extensions that are not supported by MESA...
But with Qt applications the render area remains black. I tried to find
out what the problem is using the hellogl example of Qt 4.3.3. It seems
something goes wrong on the heap when allocating memory for the render
context. But I have no clue what exactly happens and what goes wrong...