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brw: fix sample mask flag emission
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It's also used for testing helper invocations.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: e3328dfa2f ("brw: only initialize sample mask flag if needed")
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38699>
This commit is contained in:
Lionel Landwerlin 2025-11-27 17:05:29 +02:00 • committed by Marge Bot
parent 671e943c9b
commit 515d8f8e3a
1 changed files with 7 additions and 3 deletions
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10
src/intel/compiler/brw/brw_compile_fs.cpp
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@ -1372,10 +1372,14 @@ run_fs(brw_shader &s, bool allow_spilling, bool do_rep_send)
}
/* We handle discards by keeping track of the still-live pixels in f0.1.
* On Xe2+, we also predicate stores with this mask. Initialize it with
* the dispatched pixels if we use discard or (on Xe2) memory stores.
* On Xe2+, we also predicate stores and test helper invocations with
* this mask. Initialize it with the dispatched pixels if we use discard
* or (on Xe2) memory stores or helper invocation testing.
*/
if ((devinfo->ver >= 20 && nir->info.writes_memory) ||
if ((devinfo->ver >= 20 &&
(BITSET_TEST(nir->info.system_values_read,
SYSTEM_VALUE_HELPER_INVOCATION) ||
nir->info.writes_memory)) ||
wm_prog_data->uses_kill) {
const unsigned lower_width = MIN2(s.dispatch_width, 16);