On Mon, Aug 10, 2015 at 11:20 AM, Anuj Phogat <anuj.pho...@gmail.com> wrote: > This condition restricts the use of fast copy blit to cases > where starting pixel of src and dst is oword (16 byte) aligned. > > Many piglit tests (if using fast copy blit in Mesa) failed earlier > because I missed adding this condition.Fast copy blit is currently > enabled for use only with Yf/Ys tiling. > > Cc: Ben Widawsky <benjamin.widaw...@intel.com> > Signed-off-by: Anuj Phogat <anuj.pho...@gmail.com> > --- > src/mesa/drivers/dri/i965/intel_blit.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/src/mesa/drivers/dri/i965/intel_blit.c > b/src/mesa/drivers/dri/i965/intel_blit.c > index bab7d90..bb8fc66 100644 > --- a/src/mesa/drivers/dri/i965/intel_blit.c > +++ b/src/mesa/drivers/dri/i965/intel_blit.c > @@ -427,6 +427,10 @@ can_fast_copy_blit(struct brw_context *brw, > dst_tr_mode == INTEL_MIPTREE_TRMODE_NONE) > return false; > > + /* The start pixel for Fast Copy blit should be on an OWord boundary. */ > + if ((dst_x * cpp | src_x * cpp) & 15) > + return false; > + > /* For all surface types buffers must be cacheline-aligned. */ > if ((dst_offset | src_offset) & 63) > return false; > -- > 2.4.3 >
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