On Sat, Feb 6, 2016 at 6:11 PM, Ben Widawsky <benjamin.widaw...@intel.com> wrote: > This fixes an assertion failure in [at least] one of the Unreal Engine Linux > demo/games that uses DXT1 compression. Specifically, the "Vehicle Game". > > At some point, the game ends up trying to blit mip level whose size is 2x2, > which is smaller than a DXT1 block. As a result, the assertion in the blit > path > is triggered. It should be safe to simply make sure we align the width and > height, which is sadly an example of compression being less efficient. > > NOTE: The demo seems to work fine without the assert, and therefore release > builds of mesa wouldn't stumble over this. Perhaps there is some unnoticeable > corruption, but I had trouble spotting it. > > Thanks to Jason for looking at my backtrace and figuring out what was going > on. > > v2: Use NPOT alignment to make sure ASTC is handled properly (Ilia) > Remove comment about how this doesn't fix other bugs, because it does. > > Cc: Jason Ekstrand <jason.ekstr...@intel.com> > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93358
Tested-by: Matt Turner <matts...@gmail.com> _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
