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authorEric Anholt <[email protected]>2011-07-08 15:30:48 -0700
committerEric Anholt <[email protected]>2011-07-09 07:45:48 -0700
commitd03fdc4cdefdfdc5b59547945704c6037a5061c7 (patch)
tree4a5d4f9cd570539746def700b99675e4c11fa5e6 /src/mesa/drivers/dri
parent57b57f6d1c3689a3a44222cb169bfd3e3142a68d (diff)
i965/gen4: Fix GPU hangs since the program streaming change.
This was tricky. We were doing a use-before-initialize of grf_reg_count, but the value usually got overwritten anyway -- when we didn't have to do a relocation (typical), or on gen5 when we didn't have relocations at all. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38771 Reviewed-by: Kenneth Graunke <[email protected]>
Diffstat (limited to 'src/mesa/drivers/dri')
-rw-r--r--src/mesa/drivers/dri/i965/brw_vs_state.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vs_state.c b/src/mesa/drivers/dri/i965/brw_vs_state.c
index d5010a21e80..179ca199b45 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_state.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_state.c
@@ -47,6 +47,7 @@ brw_prepare_vs_unit(struct brw_context *brw)
memset(vs, 0, sizeof(*vs));
/* BRW_NEW_PROGRAM_CACHE | CACHE_NEW_VS_PROG */
+ vs->thread0.grf_reg_count = ALIGN(brw->vs.prog_data->total_grf, 16) / 16 - 1;
vs->thread0.kernel_start_pointer =
brw_program_reloc(brw,
brw->vs.state_offset +
@@ -54,7 +55,6 @@ brw_prepare_vs_unit(struct brw_context *brw)
brw->vs.prog_offset +
(vs->thread0.grf_reg_count << 1)) >> 6;
- vs->thread0.grf_reg_count = ALIGN(brw->vs.prog_data->total_grf, 16) / 16 - 1;
vs->thread1.floating_point_mode = BRW_FLOATING_POINT_NON_IEEE_754;
/* Choosing multiple program flow means that we may get 2-vertex threads,
* which will have the channel mask for dwords 4-7 enabled in the thread,