On Sat, 4 Jun 2011 17:45:37 -0700, Chad Versace <c...@chad-versace.us> wrote: > ... which indicates if the X driver supports DRI2BufferHiz and > DRI2BufferStencil. > > I'm placing this in its own commit due to the large comment block. > > CC: Eric Anholt <e...@anholt.net> > CC: Ian Romanick <i...@freedesktop.org> > CC: Kenneth Graunke <kenn...@whitecape.org> > CC: Kristian Høgsberg <k...@bitplanet.net> > Signed-off-by: Chad Versace <c...@chad-versace.us> > --- > src/mesa/drivers/dri/intel/intel_screen.h | 54 > +++++++++++++++++++++++++++++ > 1 files changed, 54 insertions(+), 0 deletions(-) > > diff --git a/src/mesa/drivers/dri/intel/intel_screen.h > b/src/mesa/drivers/dri/intel/intel_screen.h > index 4613c98..d4add6a 100644 > --- a/src/mesa/drivers/dri/intel/intel_screen.h > +++ b/src/mesa/drivers/dri/intel/intel_screen.h > @@ -34,6 +34,60 @@ > #include "i915_drm.h" > #include "xmlconfig.h" > > +/** > + * \brief Does the X driver support DRI2BufferHiz and DRI2BufferStencil? > + * > + * The DRI2 protocol does not allow us to query the X driver's version nor > + * query for a list of buffer formats that the driver supports. So, to > + * determine if the X driver supports DRI2BufferHiz and DRI2BufferStencil we > + * must resort to a handshake. > + * > + * If the hardware lacks support for separate stencil (and consequently, > lacks > + * support for hiz also), then the X driver's separate stencil and hiz > support > + * is irrelevant and the handshake never occurs. > + * > + * Complications > + * ------------- > + * The handshake is complicated by a bug in the current driver version. Even > + * though the driver currently does not support requests for DRI2BufferHiz or > + * DRI2BufferStencil, if requested one it still allocates and returns one. > The > + * returned buffer, however, is incorrectly X tiled.
I would word this in the past tense.
pgp9DYX6TQV3F.pgp
Description: PGP signature
_______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
