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lima: split_load_input: don't split unaligned vec2

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Mali4x0 can't fetch unaligned vec2 (i.e. .yz), so don't split it.

Fixes: 6dd0ad66de ("lima/ppir: add NIR pass to split varying loads")
Reviewed-by: Erico Nunes <nunes.erico@gmail.com>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13131>
(cherry picked from commit 5db5ff58b7)
This commit is contained in:
Vasily Khoruzhick 2021-09-30 19:31:09 -07:00 • committed by Dylan Baker
parent 202f0363ac
commit 7c6eb3396d
2 changed files with 6 additions and 1 deletions
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2
.pick_status.json
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@ -1057,7 +1057,7 @@
"description": "lima: split_load_input: don't split unaligned vec2",
"nominated": true,
"nomination_type": 1,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": "6dd0ad66dedc4cbd79574053f0b5023172935657"
},

5
src/gallium/drivers/lima/ir/lima_nir_split_load_input.c
View file

@ -67,6 +67,11 @@ lima_nir_split_load_input_block(nir_block *block, nir_builder *b)
if (nir_dest_num_components(alu->dest.dest) == 3 && swizzle > 0)
continue;
/* mali4xx can't access unaligned vec2, don't split load input */
if (nir_dest_num_components(alu->dest.dest) == 2 &&
swizzle != 0 && swizzle != 2)
continue;
b->cursor = nir_before_instr(&intrin->instr);
nir_intrinsic_instr *new_intrin = nir_intrinsic_instr_create(
b->shader,