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i965: Also emit HiZ and Stencil packets when disabling depth on Gen6.

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The normal drawing path does this, and it's necessary on Ivybridge,
so let's try it on Sandybridge too.  It's not explicitly documented
as necessary, but might help with hangs.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Tested-by: Xinkai Chen <yeled.nova@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Cc: "9.2" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit 5563dfabc8)
This commit is contained in:
Kenneth Graunke 2013-08-13 13:57:13 -07:00 • committed by Carl Worth
parent 57cd553eda
commit 6e491b875f
1 changed files with 12 additions and 0 deletions
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12
src/mesa/drivers/dri/i965/gen6_blorp.cpp
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@ -924,6 +924,18 @@ gen6_blorp_emit_depth_disable(struct brw_context *brw,
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
BEGIN_BATCH(3);
OUT_BATCH(_3DSTATE_HIER_DEPTH_BUFFER << 16 | (3 - 2));
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
BEGIN_BATCH(3);
OUT_BATCH(_3DSTATE_STENCIL_BUFFER << 16 | (3 - 2));
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
}