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i965/gen7: Fix GPU hangs from the HiZ op.

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The wm max threads is in the same dword as the dispatch enable.  The
hardware gets super angry if you set max threads to 0, even if you
aren't dispatching threads.
This commit is contained in:
Eric Anholt
2012-02-09 10:08:00 -08:00
parent 67007080b7
commit e5b225afbd
1 changed files with 3 additions and 2 deletions
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src/mesa/drivers/dri/i965/gen7_hiz.c
+3 -2
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@@ -322,8 +322,9 @@ gen7_hiz_exec(struct intel_context *intel,
OUT_BATCH(_3DSTATE_PS << 16 | (8 - 2));
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH((brw->max_wm_threads - 1) << GEN7_PS_MAX_THREADS_SHIFT);
OUT_BATCH(GEN7_PS_32_DISPATCH_ENABLE);
OUT_BATCH(0);
OUT_BATCH(((brw->max_wm_threads - 1) << GEN7_PS_MAX_THREADS_SHIFT) |
GEN7_PS_32_DISPATCH_ENABLE);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);