On Thursday, May 28, 2020 5:49 PM, Marek Olšák <maraeo@xxxxxxxxx> wrote: > On most hardware, there is a minimum pitch alignment for linear and > any greater multiple of the alignment is fine. > > On Navi, the pitch in bytes for linear must be > align(width * bpp / 8, 256). That's because the hw computes the pitch > from the width and doesn't allow setting a custom pitch. For that > reason, multi-GPU sharing might not be possible if the other GPU > doesn't align the pitch in exactly the same way. OK. In this case I think it's fine to make the DMA-BUF import fail, as we've suggested on IRC. The more-or-less planned fix for these buffer sharing issues is to revive the buffer constraints proposal from the allocator project. It's a lot of work though. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
