diff options
| author | Kenneth Graunke <[email protected]> | 2014-04-21 14:08:49 -0700 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2014-04-22 10:57:11 -0700 |
| commit | 34a68345e228b7cbc1bc6909704a89c08bf5368e (patch) | |
| tree | fe1ef1ed05b1df0a6d7e187dd3d4d9400a26bf03 /src/mesa/drivers/dri/i965 | |
| parent | fe49949392f9cf80e78b4e679d79e40c4da71ded (diff) | |
i965: Make Broadwell HiZ path arrange for TC flushes.
HiZ operations make the depth/render caches out of sync with the sampler
caches. We need to arrange for a TC flush to happen before the target
buffer is used by the sampler. Calling brw_render_cache_set_add_bo
makes that happen.
On previous generations, brw_blorp_exec took care of flushing the
texture cache by calling intel_batchbuffer_emit_mi_flush after doing
any rendering. If we were to use the normal drawing path, then
brw_postdraw_set_buffers_need_resolve would handle this.
On Broadwell, we don't use BLORP, and we don't emit a rectangle
primitive via the normal drawing path. The 3DSTATE_WM_HZ_OP and
PIPE_CONTROL implicitly make drawing happen. So, none of our existing
code makes this flush happen - we need to do it directly.
Fixes 11 Piglit copyteximage subtests.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77223
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77226
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Diffstat (limited to 'src/mesa/drivers/dri/i965')
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen8_depth_state.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/gen8_depth_state.c b/src/mesa/drivers/dri/i965/gen8_depth_state.c index 8f5718a2f54..05c37239543 100644 --- a/src/mesa/drivers/dri/i965/gen8_depth_state.c +++ b/src/mesa/drivers/dri/i965/gen8_depth_state.c @@ -307,6 +307,9 @@ gen8_hiz_exec(struct brw_context *brw, struct intel_mipmap_tree *mt, OUT_BATCH(0); ADVANCE_BATCH(); + /* Mark this buffer as needing a TC flush, as we've rendered to it. */ + brw_render_cache_set_add_bo(brw, mt->region->bo); + /* We've clobbered all of the depth packets, and the drawing rectangle, * so we need to ensure those packets are re-emitted before the next * primitive. |