On Wed, Apr 18, 2018 at 2:11 PM, Marek Olšák <mar...@gmail.com> wrote: > On Wed, Apr 18, 2018 at 4:44 PM, Bas Nieuwenhuizen <b...@basnieuwenhuizen.nl> > wrote: >> >> IIRC if level N is unaligned then num_dcc_levels <= N+1, so level N+1 >> is not DCC compressed? > > > There is a difference between being aligned (contiguous really) and being > compressible. Small mip levels might be unaligned but may still > compressible. Non-contiguous can mean that DCC of multiple mip levels is > interleaved in memory. It can't be cleared with memset trivially, but it can > still be compressed.
Hw-wise probably, but if level N is not aligned addrlib will set subLvlCompressible to false[1], and hence the next level will not be DCC compressed[2]? [1] https://cgit.freedesktop.org/mesa/mesa/tree/src/amd/addrlib/r800/ciaddrlib.cpp#n268 [2] https://cgit.freedesktop.org/mesa/mesa/tree/src/amd/common/ac_surface.c#n345 > > Marek > _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
