Mostly no 3d with nvidia driver and maxwell card?

I can't seem to get anything to work that needs any kind of 3D support with my GTX 750 Ti card and nvidia binary drivers from rpmfusion and fedora 21 64 bit. I followed the instructions for installing from the web page at http://rpmfusion.org/Howto/nVidia and 2D certainly works (which is more than it does with nouveau), but no 3d. I've gathered all the information I could think of and stashed it on this web page: http://home.comcast.net/~tomhorsley/misc/3d/README.html The most likely way I could have broken something is by installing some rpm I shouldn't be installing (because I tend to copy the list of rpms from the old fedora and install the newer versions of the same rpm names in the new fedora), but I don't have any idea what rpms might cause a problem that way. I don't even know for sure that maxwell cards are supposed to be fully working in fedora yet :-). Anyone have any ideas, or can confirm that it just don't work yet?