BPTC patches were not only published for nouveau, but also for r600g:
Phoronix: BPTC Texture Compression Comes To Nouveau After Intel's Work
Just hours after Intel added BPTC texture compression support to Mesa and their DRI driver, frequent Nouveau contributor Ilia Mirkin added BPTC support to Gallium3D and wired it up for the "NVC0" Fermi/Kepler Gallium3D open-source NVIDIA driver...
Less then 12H and we get support in three different drivers for 3 different hw architectures
Thanks, Intel, for doing the work and "helping" nvidia/amd FLOSS driver devs.
Although I was on AMD hardware for the past 5 years, my next CPU will be Intel + AMD GPU. Waiting for Broadwell. (Unless they announce Skylake to be released only a couple of months later, in which case I'm waiting for Skylake.)