Hi Dave, i believe your first attempt is correct. The export/import semaphore needs refine of the semaphore implementation. We are working on that. Thanks. Best Regards, David > On 1 Dec 2016, at 10:12 AM, Dave Airlie <airlied at gmail.com> wrote: > > Hey all, > > So I've started adding semaphore support to radv but I'm not really > sure what the API to the semaphore code is. > > the Vulkan API is you get a command submission of a number of submit > units which have a 0-n wait semaphore, 0-n command buffers and 0-n > signal semaphores. > > Now I'm not sure how I should use the APIs with those. > > My first attempt is > > call amdgpu_cs_wait_semaphore on all the wait ones, call the cs submit > API, then call the amdgpu_cs_signal_semaphore on all the signal ones? > > or should I be up front calling wait/signal then submitting the command streams? > > Also upcoming work requires possibly sharing semaphores between > processes, is there any indication how this might be made work with > the libdrm_amdgpu semaphore implementation? > > Thanks, > Dave. > _______________________________________________ > amd-gfx mailing list > amd-gfx at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
