On Mon, 2016-10-17 at 12:34 -0700, Kenneth Graunke wrote: > On Monday, October 17, 2016 4:46:54 PM PDT Lionel Landwerlin wrote: > > Hi, > > > > Spoiler alert, this series doesn't actually make the border colors > > work on > > IvyBridge and Haswell. It still brings some useful changes (I > > think). > > > > On Haswell, it seems the hardware always reads the border color > > from the > > offset 0 of the "Dynamic State Memory Address", regardless of what > > offset is > > programmed in the "Border Color Pointer" field of the SAMPLER_STATE > > structure. Maybe some kind of cache invalidation is missing in this > > series? > > Any idea/pointer is more than welcome! > > > > Cheers, > > Lionel Landwerlin > > Ouch. I'm pretty sure you've hit the undocumented hardware bug I > discovered a few years ago. > > The STATE_BASE_ADDRESS "Dynamic State Access Upper Bound" field is > supposed to be ignored when it is zero, but the sampler border color > access apparently fails to do so. So the address gets clamped. > > Program that to a proper value (or 0xFFFFFFFF) and I bet it will > work. > > See c25e5300cba7628b58df93ead14ebc3cc32f338c in the GL driver. > > Sorry for not thinking to warn you sooner :(
Ahah :) No worries, I should have posted this series earlier. Thanks a bunch will try your suggestion soon! _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
