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authorEric Anholt <eric@anholt.net>2009-09-03 09:19:43 -0700
committerEric Anholt <eric@anholt.net>2009-09-04 14:20:09 -0700
commita47858e45efd95d798468cfff34616c0de200032 (patch)
tree1a366099f0e98637bae2dd357e479c070ec207f7 /src/mesa
parent8f7f22ca1d1594f9a4c6bdef181e24cbdd2c921c (diff)
i965: Add support for 2 threads in the GS.
This brings noop vertex shader throughput from 6.8M verts/sec to 10.4M verts/sec using GL_QUADs on my GM45.
Diffstat (limited to 'src/mesa')
-rw-r--r--src/mesa/drivers/dri/i965/brw_gs_state.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_gs_state.c b/src/mesa/drivers/dri/i965/brw_gs_state.c
index a761c03153..ed9d2ffe60 100644
--- a/src/mesa/drivers/dri/i965/brw_gs_state.c
+++ b/src/mesa/drivers/dri/i965/brw_gs_state.c
@@ -93,7 +93,10 @@ gs_unit_create_from_key(struct brw_context *brw, struct brw_gs_unit_key *key)
gs.thread4.nr_urb_entries = key->nr_urb_entries;
gs.thread4.urb_entry_allocation_size = key->urb_size - 1;
- gs.thread4.max_threads = 0; /* Hardware requirement */
+ if (key->nr_urb_entries >= 8)
+ gs.thread4.max_threads = 1;
+ else
+ gs.thread4.max_threads = 0;
if (BRW_IS_IGDNG(brw))
gs.thread4.rendering_enable = 1;