pan/bi: Implement bi_load_sysval via the builder

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8135>
2020-12-07 19:15:10 -05:00
parent feecf0a3d8
commit 9841afad57
1 changed files with 18 additions and 0 deletions
@@ -629,6 +629,24 @@ bi_emit_ld_ubo(bi_context *ctx, nir_intrinsic_instr *instr)
        bi_emit(ctx, ld);
 }

+static void
+bi_load_sysval(bi_builder *b, nir_instr *instr,
+                unsigned nr_components, unsigned offset)
+{
+        nir_dest nir_dest;
+
+        /* Figure out which uniform this is */
+        int sysval = panfrost_sysval_for_instr(instr, &nir_dest);
+        void *val = _mesa_hash_table_u64_search(b->shader->sysvals.sysval_to_id, sysval);
+
+        /* Sysvals are prefix uniforms */
+        unsigned uniform = ((uintptr_t) val) - 1;
+        unsigned idx = (uniform * 16) + offset;
+
+        bi_load_to(b, nr_components * 32, bi_dest_index(&nir_dest),
+                        bi_imm_u32(idx), bi_zero(), BI_SEG_UBO);
+}
+
 static void
 bi_emit_sysval(bi_context *ctx, nir_instr *instr,
                unsigned nr_components, unsigned offset)