diff options
Diffstat (limited to 'src/mesa/drivers/dri')
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen6_surface_state.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/gen6_surface_state.c b/src/mesa/drivers/dri/i965/gen6_surface_state.c index 65bcf7d0af2..27b441956df 100644 --- a/src/mesa/drivers/dri/i965/gen6_surface_state.c +++ b/src/mesa/drivers/dri/i965/gen6_surface_state.c @@ -99,8 +99,24 @@ gen6_update_renderbuffer_surface(struct brw_context *brw, /* reloc */ surf[1] = mt->bo->offset64; + /* In the gen6 PRM Volume 1 Part 1: Graphics Core, Section 7.18.3.7.1 + * (Surface Arrays For all surfaces other than separate stencil buffer): + * + * "[DevSNB] Errata: Sampler MSAA Qpitch will be 4 greater than the value + * calculated in the equation above , for every other odd Surface Height + * starting from 1 i.e. 1,5,9,13" + * + * Since this Qpitch errata only impacts the sampler, we have to adjust the + * input for the rendering surface to achieve the same qpitch. For the + * affected heights, we increment the height by 1 for the rendering + * surface. + */ + int height0 = irb->mt->logical_height0; + if (brw->gen == 6 && irb->mt->num_samples > 1 && (height0 % 4) == 1) + height0++; + surf[2] = SET_FIELD(mt->logical_width0 - 1, BRW_SURFACE_WIDTH) | - SET_FIELD(mt->logical_height0 - 1, BRW_SURFACE_HEIGHT) | + SET_FIELD(height0 - 1, BRW_SURFACE_HEIGHT) | SET_FIELD(irb->mt_level - irb->mt->first_level, BRW_SURFACE_LOD); surf[3] = brw_get_surface_tiling_bits(mt->tiling) | |