On Fri, Nov 07, 2014 at 07:00:26PM +0000, Neil Roberts wrote: > The predicate source registers are needed to implement conditional > rendering without stalling. The two source registers are used to load > the previous values of the PS_DEPTH_COUNT register saved from > PIPE_CONTROL commands. These can then be compared and used to set the > predicate enable bit via the MI_PREDICATE command. > > The command parser version number is increased to 2 to make it easier > to detect the new functionality in user space. > > Signed-off-by: Neil Roberts <neil@xxxxxxxxxxxxxxx> > --- > > Here is a v2 of the patch that also updates the command parser version > to make it easier to detect whether we can use the register in Mesa. > I have posted a second version of the Mesa patch which uses this here: > > http://lists.freedesktop.org/archives/mesa-dev/2014-November/070362.html > > This was suggested by Glenn Kennard. Ok, I've merged this one, since that means you at least won't get an -EINVAL. But you can't yet enable the feature in mesa since it's still no-opped out. Let's hope that v3 actually starts granting rights (but please don't encode that in any merge mesa patch before it's official in the kernel, Dave Airlie _will_ revert it even if it breaks the build) and that this happens soon. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
