Some people in this thread really believe that EGL and KMS never can be implemented in proprietary drivers. AMD embedded drivers and nVidia Tegra drivers is good living example that proof one simple fact - this is possible. So when Wayland will be ready - nVidia and AMD driver developers have no choice but implement needed functional in proprietary drivers for desktop and laptops GPU's.
I for one am not saying it can't be done, I'm saying I believe said companies won't be bothered to do so. As I said before, X isn't going anywhere for a while, binary blob primary targets being workstations, what is their incentive? Someone mentioned using wayland on a worksation is possible, I agree, but AFAIK most workstations use applications written for X, some of them proprietary. I'm not saying it won't happen, I just don't believe it will; but would however love to be proven wrong.
As for the not having any choice, I'm afraid they do have a choice : they can simply flip us off.
They do have reasons, the main one would be they must pay for that porting, and it's not focused to their main target.
Laptops with hybrid graphics is not main target for AMD, but they support it in fglrx, HTPC is not main target for nVidia, but they support HDMI audio bitstreaming. They already pay for support this and other features, even less important. Since Wayland is more important they will support it anyway.
5 pages of comments and nobody read/understood the article, the usual for Phoronix. Anyway, if anybody is interested in the real problem here is a summary:
1. When building GTK+ with Wayland support memory usage will increase when running on regular X11, so it has nothing to do with nVidia supporting Wayland.
2. This is because nVidia builds their drivers with position dependant code, which is slightly faster but can not be shared between different programs (so it gets duplicated for each program running that uses GTK+)
3. It only happens for 32 bit applications, because the AMD64 architecture doesn't support shared libraries built with position dependant code so nVidia was forced to fix their 64 bit driver.