diff options
| author | Marek Olšák <maraeo@gmail.com> | 2012-08-07 23:38:19 +0200 |
|---|---|---|
| committer | Marek Olšák <maraeo@gmail.com> | 2012-08-09 22:35:07 +0200 |
| commit | 128803a107fde8ce36036e59437a536fc4d46553 (patch) | |
| tree | 740a2d779d64ae7f9dc118ea5055f5484afbbbf4 | |
| parent | e14aedce64e365ef1a8726ed8c1ebed881d7a398 (diff) | |
radeon: tweak TILE_SPLIT for MSAA surfaces
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
| -rw-r--r-- | radeon/radeon_surface.c | 37 |
1 files changed, 31 insertions, 6 deletions
diff --git a/radeon/radeon_surface.c b/radeon/radeon_surface.c index 499e994c..892dca64 100644 --- a/radeon/radeon_surface.c +++ b/radeon/radeon_surface.c @@ -871,12 +871,37 @@ static int eg_surface_best(struct radeon_surface_manager *surf_man, return 0; } - /* set tile split to row size, optimize latter for multi-sample surface - * tile split >= 256 for render buffer surface. Also depth surface want - * smaller value for optimal performances. - */ - surf->tile_split = surf_man->hw_info.row_size; - surf->stencil_tile_split = surf_man->hw_info.row_size / 2; + /* Tweak TILE_SPLIT for performance here. */ + if (surf->nsamples > 1) { + if (surf->flags & (RADEON_SURF_ZBUFFER | RADEON_SURF_SBUFFER)) { + switch (surf->nsamples) { + case 2: + surf->tile_split = 128; + break; + case 4: + surf->tile_split = 128; + break; + case 8: + surf->tile_split = 256; + break; + case 16: /* cayman only */ + surf->tile_split = 512; + break; + default: + fprintf(stderr, "radeon: Wrong number of samples %i (%i)\n", + surf->nsamples, __LINE__); + return -EINVAL; + } + surf->stencil_tile_split = 64; + } else { + /* tile split must be >= 256 for colorbuffer surfaces */ + surf->tile_split = MAX2(surf->nsamples * surf->bpe * 64, 256); + } + } else { + /* set tile split to row size */ + surf->tile_split = surf_man->hw_info.row_size; + surf->stencil_tile_split = surf_man->hw_info.row_size / 2; + } /* bankw or bankh greater than 1 increase alignment requirement, not * sure if it's worth using smaller bankw & bankh to stick with 2D |