diff options
Diffstat (limited to 'src/intel/isl/isl.c')
| -rw-r--r-- | src/intel/isl/isl.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/intel/isl/isl.c b/src/intel/isl/isl.c index c710bca6d29..4205c1c03a4 100644 --- a/src/intel/isl/isl.c +++ b/src/intel/isl/isl.c @@ -133,10 +133,20 @@ isl_tiling_get_info(const struct isl_device *dev, break; case ISL_TILING_W: - /* XXX: Should W tile be same as Y? */ assert(bs == 1); logical_el = isl_extent2d(64, 64); - phys_B = isl_extent2d(64, 64); + /* From the Broadwell PRM Vol 2d, RENDER_SURFACE_STATE::SurfacePitch: + * + * "If the surface is a stencil buffer (and thus has Tile Mode set + * to TILEMODE_WMAJOR), the pitch must be set to 2x the value + * computed based on width, as the stencil buffer is stored with two + * rows interleaved." + * + * This, together with the fact that stencil buffers are referred to as + * being Y-tiled in the PRMs for older hardware implies that the + * physical size of a W-tile is actually the same as for a Y-tile. + */ + phys_B = isl_extent2d(128, 32); break; case ISL_TILING_Yf: |