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jay: Don't swap FS interpolation .yz deltas

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load_fs_interp_deltas wants .yz swapped, but load_input_vertex does not.
For simplicity, keep the payload fields in hardware order and have the
individual intrinsics swap.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41872>
This commit is contained in:
Kenneth Graunke 2026-06-02 16:46:20 -07:00 • committed by Marge Bot
parent d89a0b486a
commit 7be50b714c
1 changed files with 7 additions and 8 deletions
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15
src/intel/compiler/jay/jay_from_nir.c
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@ -1592,8 +1592,12 @@ jay_emit_intrinsic(struct nir_to_jay_state *nj, nir_intrinsic_instr *intr)
assert(intr->def.num_components == 1 && "should be scalarized");
}
/* Zeroth delta is the flat value */
jay_copy(b, dst, fs->deltas[i]);
/* Zeroth delta is the flat value; .yz deltas are reversed from NIR */
jay_MOV(b, jay_extract(dst, 0), jay_extract(fs->deltas[i], 0));
if (intr->def.num_components > 1) {
jay_MOV(b, jay_extract(dst, 1), jay_extract(fs->deltas[i], 2));
jay_MOV(b, jay_extract(dst, 2), jay_extract(fs->deltas[i], 1));
}
break;
}
@ -2716,12 +2720,7 @@ setup_fragment_payload(struct nir_to_jay_state *nj, struct payload_builder *p)
unsigned nr_attribs = 16 * 4; /* TODO */
for (unsigned i = 0; i < nr_attribs; ++i) {
jay_def comps[] = { read_payload(p, UGPR), read_payload(p, UGPR),
read_payload(p, UGPR) };
/* The .yz components are swizzled in the hardware compared to NIR. */
SWAP(comps[1], comps[2]);
fs->deltas[i] = jay_collect_vectors(&nj->bld, comps, ARRAY_SIZE(comps));
fs->deltas[i] = read_vector_payload(p, UGPR, 3);
/* Padding */
if ((i % 5) == 4) {