Module: Mesa
Branch: master
Commit: 7d967b9b7c08aea2a471c5bf6aced8bfafdae874
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=7d967b9b7c08aea2a471c5bf6aced8bfafdae874

Author: Christoph Bumiller <[email protected]>
Date:   Wed Oct 28 00:30:45 2009 +0100

nv50: activate more lanes in a warp

Some cards have crippling defaults set and use only 4
of 32 lanes. This should activate 16 on these.
Those that allow 32 by default should still do so.

Found out by Marcin Koƛcielnicki.

---

 src/gallium/drivers/nv50/nv50_screen.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/src/gallium/drivers/nv50/nv50_screen.c 
b/src/gallium/drivers/nv50/nv50_screen.c
index c672ea4..c8d0f1e 100644
--- a/src/gallium/drivers/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nv50/nv50_screen.c
@@ -309,6 +309,10 @@ nv50_screen_create(struct pipe_winsys *ws, struct 
nouveau_device *dev)
        so_method(so, screen->tesla, 0x121c, 1);
        so_data  (so, 1);
 
+       /* try to activate all/more lanes (threads) in a warp */
+       so_method(so, screen->tesla, 0x1400, 1);
+       so_data  (so, 0xf);
+
        so_method(so, screen->tesla, 0x13bc, 1);
        so_data  (so, 0x54);
        /* origin is top left (set to 1 for bottom left) */

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