On Thu, Jul 24, 2014 at 8:55 AM, Neil Roberts <n...@linux.intel.com> wrote: > Ilia Mirkin <imir...@alum.mit.edu> writes: > >> 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). > > The compression ratio is fixed so the only variable is the quality of > the image. I did make a naïve compressor for the RGBA UNORM format but I > opted for the approach going via DXT3 instead because it looks nicer. I > later modified that compressor to work for the half-float formats > because we can't use DXT3 there. If we did want to avoid any > dependencies and we don't care about the quality then that naïve > compressor could still be an viable approach. Here's an example of the > quality: > > http://busydoingnothing.co.uk/doge/
That's a great reference image. Do you have a version of the image compressed with nVidias online compressor? Kristian _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
