Module: Mesa
Branch: main
Commit: 5db5ff58b73de749378223ae80f542f832ec5461
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=5db5ff58b73de749378223ae80f542f832ec5461
Author: Vasily Khoruzhick <anars...@gmail.com>
Date: Thu Sep 30 19:31:09 2021 -0700
lima: split_load_input: don't split unaligned vec2
Mali4x0 can't fetch unaligned vec2 (i.e. .yz), so don't split it.
Fixes: 6dd0ad66dedc ("lima/ppir: add NIR pass to split varying loads")
Reviewed-by: Erico Nunes <nunes.er...@gmail.com>
Signed-off-by: Vasily Khoruzhick <anars...@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13131>
---
src/gallium/drivers/lima/ir/lima_nir_split_load_input.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/src/gallium/drivers/lima/ir/lima_nir_split_load_input.c
b/src/gallium/drivers/lima/ir/lima_nir_split_load_input.c
index dbdb3a81c64..5037896cdf4 100644
--- a/src/gallium/drivers/lima/ir/lima_nir_split_load_input.c
+++ b/src/gallium/drivers/lima/ir/lima_nir_split_load_input.c
@@ -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,
