As suggested by bridgman I registered for this forum and I already regret it. It is lost time as no devs answers anything. It is the same c r a p as the "unofficial" bugtracker that never got responses. I mean on phoronix you can see Intel devs answering and other Mesa devs as well. Nvidia has it's own forum and there you can get answers too, but this one is just D E A D. Can somebody explain me why a new official forum is created and nobody answers?
PS: It is censored too... "Discussion blocked due to potentially offensive language or unauthorized content"