diff options
| author | Kenneth Graunke <[email protected]> | 2013-10-24 00:32:52 -0700 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2013-10-28 11:29:27 -0700 |
| commit | 436e815a250a8fde22d79093f4b9eed56472693b (patch) | |
| tree | ef9dc661d49f6e3e1fb6ea155d5a7e9dceea7df9 /src/mesa/drivers/dri/i965/gen6_sol.c | |
| parent | 32a3f5f6d768e5828be1d1f46b1b3f819f55cba8 (diff) | |
i965: Emit post-sync non-zero flush before 3DSTATE_GS_SVB_INDEX.
From the comments above intel_emit_post_sync_nonzero_flush:
"[DevSNB-C+{W/A}] Before any depth stall flush (including those
produced by non-pipelined state commands), software needs to first
send a PIPE_CONTROL with no bits set except Post-Sync Operation != 0."
This suggests that every non-pipelined (0x79xx) command needs a
post-sync non-zero flush before it.
Signed-off-by: Kenneth Graunke <[email protected]>
Tested-by: Xinkai Chen <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>
Cc: "9.2" <[email protected]>
Diffstat (limited to 'src/mesa/drivers/dri/i965/gen6_sol.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen6_sol.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/gen6_sol.c b/src/mesa/drivers/dri/i965/gen6_sol.c index 21da444247f..9a3feb52e71 100644 --- a/src/mesa/drivers/dri/i965/gen6_sol.c +++ b/src/mesa/drivers/dri/i965/gen6_sol.c @@ -153,6 +153,9 @@ brw_begin_transform_feedback(struct gl_context *ctx, GLenum mode, = _mesa_compute_max_transform_feedback_vertices(xfb_obj, linked_xfb_info); + /* 3DSTATE_GS_SVB_INDEX is non-pipelined. */ + intel_emit_post_sync_nonzero_flush(brw); + /* Initialize the SVBI 0 register to zero and set the maximum index. */ BEGIN_BATCH(4); OUT_BATCH(_3DSTATE_GS_SVB_INDEX << 16 | (4 - 2)); |