From a47858e45efd95d798468cfff34616c0de200032 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Thu, 3 Sep 2009 09:19:43 -0700 Subject: [PATCH] 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. --- src/mesa/drivers/dri/i965/brw_gs_state.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/mesa/drivers/dri/i965/brw_gs_state.c b/src/mesa/drivers/dri/i965/brw_gs_state.c index a761c03153c..ed9d2ffe605 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; -- 2.30.2