On Don, 2013-08-15 at 12:36 +0200, Marek Olšák wrote: > On Thu, Aug 15, 2013 at 9:33 AM, Michel Dänzer <mic...@daenzer.net> wrote: > > On Don, 2013-08-15 at 05:25 +0200, Marek Olšák wrote: > >> (This should be applied before MSAA, which will need to be rebased.) > >> > >> It moves all sampler view descriptors to a buffer. > >> It supports partial resource updates and it can also unbind resources > >> (required for FMASK texturing). > >> > >> The buffer contains all sampler view descriptors for one shader stage, > >> represented as an array. On top of that, there are N arrays in the buffer, > >> which are used to emulate context registers as implemented by the previous > >> ASICs (each array is a context). > >> > >> This uses the RCU synchronization approach to avoid read-after-write > >> hazards > >> as discussed in the thread: > >> "radeonsi: add FMASK texture binding slots and resource setup" > >> > >> CP DMA is used to clear the descriptors at context initialization and to > >> copy > >> the descriptors from one context to the next. > >> > >> IMPORTANT: > >> 128 resource contexts are needed, 64 doesn't work. > > > > Hmm, I suppose this might depend on the specific GPU? > > Very likely. I'm using SI VERDE.
Then it seems likely more will be needed for Pitcairn or Tahiti due to multiple shader engines? -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Debian, X and DRI developer _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
