On Sat, Aug 27, 2016 at 10:43 AM, Clemens Eisserer <linuxhi...@gmail.com> wrote: > Hi Marek, > > Thanks a lot for the detailed explanation. I asked it here, because I > was not sure whether the details I asked are driver specific. > >> All GPU operations are asynchronous and don't >> cause any stalls on the CPU side. > > And what about GPU stalls? From what I read it seems currently DMA can > not operate concurrently with the 3D engine, so would it be benefitial > for upload performance to instead use SSBOs located in GTT accessed by > a shader, so the 3D engine does perform the copy itself?
glTexSubImage2D with a PBO source is implemented by binding the PBO as a texture buffer object and drawing into the texture. There is no DMA. Marek _______________________________________________ xorg-driver-ati mailing list xorg-driver-ati@lists.x.org https://lists.x.org/mailman/listinfo/xorg-driver-ati
