On 07/24/2014 07:43 AM, Ilia Mirkin wrote: > On Thu, Jul 24, 2014 at 10:37 AM, Neil Roberts <n...@linux.intel.com> wrote: >> Ian Romanick <i...@freedesktop.org> writes: >> >>> Is that NVIDIA's off-line compression tool, or is that the compressor >>> in the driver? >> >> I was talking about the offline compressor. I don't know what NVidia's >> online compressor is like. Yes, perhaps if we can get a quick compressor >> with reasonable results then it starts to make sense to compress on the >> fly. > > Just a thought -- if online compression is highly unexpected, perhaps > it'd be reasonably to make a *horrid* compressor that doesn't rely on > any external libraries? I don't know how complex the BPTC format is, > but I suspect it may be possible to do a simple conversion that does > ~0 compression (and may actually make things larger). > > This would allow you to separate the problem of BPTC support in mesa > and all the potential external dependency/licensing issues.
Almost all texture compression formats, including BPTC, are fixed-rate codecs. You always get M:N compression, but the quality of the result may differ. > Cheers, > > -ilia _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
