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i965: Fix a mistake from porting the URB allocation code to arrays.

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Commit 6d416bcd84 (i965: Use arrays in
Gen7+ URB code.) introduced a regression which caused us to fail to
allocate all of our URB space.

   -         total_wants -= ds_wants;
   +         total_wants -= additional;

The new line should have been total_wants -= wants[i].

Fixes a large performance regression in TessMark.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98815
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Kenneth Graunke 2016-11-23 12:24:22 -08:00
parent 903056e016
commit 5da84a7e12
1 changed files with 1 additions and 1 deletions
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2
src/intel/common/gen_urb_config.c
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@ -160,7 +160,7 @@ gen_get_urb_config(const struct gen_device_info *devinfo,
roundf(wants[i] * (((float) remaining_space) / total_wants));
chunks[i] += additional;
remaining_space -= additional;
total_wants -= additional;
total_wants -= wants[i];
}
chunks[MESA_SHADER_GEOMETRY] += remaining_space;