Hi,
Maybe someone had a similar problem?
(I’m using the java opengl bindings jogl, so the syntax may differ a bit from the c++ implementation)
I’m gettin 16 Samples when quering:
glGetIntegerv(GL.GL_MAX_SAMPLES_EXT, aMaxSamples, 0);
glRenderbufferStorageMultisampleEXT(GL.GL_RENDERBUFFER_EXT,aMaxSamples…
works fine.
My problem is multisampling works only when using 16 samples. Unfortunatly Im loosing a lot of performance using 16 samples. So I tried 2,4,8 for aMaxSamples but always the same result: no multisampling… 
Im using nvidia 8800 GTX.
Anyone can help?
Thnxalot
Michal