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jay: Implement sample position

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41688>
This commit is contained in:
Kenneth Graunke 2026-05-14 00:03:41 -07:00 • committed by Marge Bot
parent a590500802
commit 0f3a311591
1 changed files with 20 additions and 0 deletions
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20
src/intel/compiler/jay/jay_from_nir.c
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@ -65,6 +65,7 @@ typedef struct jay_fs_payload {
} coord;
jay_def pixel_sample_mask;
jay_def sample_pos;
jay_def deltas[64];
} jay_fs_payload;
@ -1206,6 +1207,8 @@ jay_emit_intrinsic(struct nir_to_jay_state *nj, nir_intrinsic_instr *intr)
jay_builder *b = &nj->bld;
jay_cs_payload *cs =
mesa_shader_stage_is_compute(s->stage) ? &nj->payload.cs : NULL;
jay_fs_payload *fs =
s->stage == MESA_SHADER_FRAGMENT ? &nj->payload.fs : NULL;
const bool has_dest = nir_intrinsic_infos[intr->intrinsic].has_dest;
jay_def dst = has_dest ? nj_def(&intr->def) : jay_null();
@ -1441,6 +1444,19 @@ jay_emit_intrinsic(struct nir_to_jay_state *nj, nir_intrinsic_instr *intr)
jay_MOV(b, dst, nj->payload.fs.coord.w);
break;
case nir_intrinsic_load_sample_pos:
case nir_intrinsic_load_sample_pos_or_center:
assert(fs);
jay_foreach_comp(dst, c) {
jay_def gpr =
jay_GPR_FROM_UGPRS_u32(b, fs->sample_pos, JAY_TYPE_U8, 2, c);
jay_MUL(b, JAY_TYPE_F32, jay_extract(dst, c),
jay_CVT_f32(b, gpr, JAY_TYPE_U32, JAY_ROUND, 0),
jay_imm_f(1 / 16.0f));
}
break;
case nir_intrinsic_load_urb_output_handle_intel:
jay_MOV(b, dst, nj->payload.urb_handle);
break;
@ -2586,6 +2602,10 @@ setup_fragment_payload(struct nir_to_jay_state *nj, struct payload_builder *p)
fs->coord.w = read_payload(p, GPR);
}
if (nj->s->prog_data->fs.uses_pos_offset) {
fs->sample_pos = read_vector_payload(p, UGPR, jay_ugpr_per_grf(nj->s));
}
setup_payload_dispatch_start(nj, p);
setup_payload_push(nj, p);