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i965: Add support for 2 threads in the GS.

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This brings noop vertex shader throughput from 6.8M verts/sec to 10.4M
verts/sec using GL_QUADs on my GM45.
This commit is contained in:
Eric Anholt 2009-09-03 09:19:43 -07:00
parent 8f7f22ca1d
commit a47858e45e
1 changed files with 4 additions and 1 deletions
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5
src/mesa/drivers/dri/i965/brw_gs_state.c
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@ -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;