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pan/bi: Handle transform feedback intrinsics 

Translate the intrinsics we introduced to lower away transform feedback into
Panfrost system values which the GL driver can handle.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15720>
This commit is contained in:
Alyssa Rosenzweig 2022-04-01 17:24:21 -04:00 committed by Marge Bot
parent ae3fa6cc1d
commit 4e341e70d8
2 changed files with 12 additions and 0 deletions
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8
src/panfrost/bifrost/bifrost_compile.c
View File

@ -1752,10 +1752,12 @@ bi_emit_intrinsic(bi_builder *b, nir_intrinsic_instr *instr)
break;
case nir_intrinsic_load_ssbo_address:
case nir_intrinsic_load_xfb_address:
bi_load_sysval_nir(b, instr, 2, 0);
break;
case nir_intrinsic_load_work_dim:
case nir_intrinsic_load_num_vertices:
bi_load_sysval_nir(b, instr, 1, 0);
break;
@ -1843,6 +1845,12 @@ bi_emit_intrinsic(bi_builder *b, nir_intrinsic_instr *instr)
break;
/* We only use in our transform feedback lowering */
case nir_intrinsic_load_vertex_id_zero_base:
assert(b->shader->nir->info.has_transform_feedback_varyings);
bi_mov_i32_to(b, dst, bi_vertex_id(b));
break;
case nir_intrinsic_load_instance_id:
bi_mov_i32_to(b, dst, bi_instance_id(b));
break;

4
src/panfrost/util/pan_sysval.c
View File

@ -87,6 +87,10 @@ panfrost_nir_sysval_for_intrinsic(nir_intrinsic_instr *instr)
case nir_intrinsic_load_ssbo_address:
case nir_intrinsic_get_ssbo_size:
return panfrost_sysval_for_ssbo(instr);
case nir_intrinsic_load_xfb_address:
return PAN_SYSVAL(XFB, nir_intrinsic_base(instr));
case nir_intrinsic_load_num_vertices:
return PAN_SYSVAL_NUM_VERTICES;
case nir_intrinsic_load_sampler_lod_parameters_pan:
return panfrost_sysval_for_sampler(instr);
case nir_intrinsic_image_size: