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pan/bi: Workaround BLEND precolour with explicit moves

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Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8417>
This commit is contained in:
Alyssa Rosenzweig 2021-01-07 09:28:11 -05:00 • committed by Marge Bot
parent 372a3a1410
commit a6f1500bed
1 changed files with 14 additions and 2 deletions
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16
src/panfrost/bifrost/bifrost_compile.c
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@ -388,9 +388,21 @@ bi_emit_fragment_out(bi_builder *b, nir_intrinsic_instr *instr)
unsigned rt = loc == FRAG_RESULT_COLOR ? 0 :
(loc - FRAG_RESULT_DATA0);
bi_index color = bi_src_index(&instr->src[0]);
bi_emit_blend_op(b, bi_src_index(&instr->src[0]),
nir_intrinsic_src_type(instr), rt);
/* Explicit copy since BLEND inputs are precoloured to R0-R3,
* TODO: maybe schedule around this or implement in RA as a
* spill */
if (rt > 0) {
bi_index srcs[4] = { color, color, color, color };
unsigned channels[4] = { 0, 1, 2, 3 };
color = bi_temp(b->shader);
bi_make_vec_to(b, color, srcs, channels,
nir_src_num_components(instr->src[0]),
nir_alu_type_get_type_size(nir_intrinsic_src_type(instr)));
}
bi_emit_blend_op(b, color, nir_intrinsic_src_type(instr), rt);
}
if (b->shader->is_blend) {