fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2025-12-25 04:20:08 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

pan/bi: handle barriers with SUBGROUP scope

Browse source 
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32710>
This commit is contained in:
Caterina Shablia 2025-01-13 18:11:05 +00:00 • committed by Marge Bot
parent f77a50e45e
commit d2838f3ceb
1 changed files with 28 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

35
src/panfrost/compiler/bifrost_compile.c
View file

@ -1853,15 +1853,36 @@ bi_emit_intrinsic(bi_builder *b, nir_intrinsic_instr *instr)
break;
case nir_intrinsic_barrier:
if (nir_intrinsic_execution_scope(instr) != SCOPE_NONE) {
assert(b->shader->stage != MESA_SHADER_FRAGMENT);
assert(nir_intrinsic_execution_scope(instr) > SCOPE_SUBGROUP &&
"todo: subgroup barriers (different divergence rules)");
switch (nir_intrinsic_execution_scope(instr)) {
case SCOPE_NONE:
/*
* No execution barrier, and we don't have to do anything for memory
* barriers (see SCOPE_WORKGROUP case.)
*/
break;
case SCOPE_SUBGROUP:
/*
* To implement a subgroup barrier, we only need to prevent the
* scheduler from reordering memory operations around the barrier.
* Avail and vis are trivially established.
*/
bi_memory_barrier(b);
break;
case SCOPE_WORKGROUP:
assert(b->shader->stage == MESA_SHADER_COMPUTE);
bi_barrier(b);
/*
* Blob doesn't seem to do anything for memory barriers, so no need to
* check nir_intrinsic_memory_scope().
*/
break;
default:
unreachable("Unsupported barrier scope");
}
/* Blob doesn't seem to do anything for memory barriers, so no need to
* check nir_intrinsic_memory_scope().
*/
break;
case nir_intrinsic_shared_atomic: {