diff options
Diffstat (limited to 'src/glsl')
| -rw-r--r-- | src/glsl/nir/nir_builder.h | 12 | ||||
| -rw-r--r-- | src/glsl/nir/nir_lower_clip.c | 13 |
2 files changed, 15 insertions, 10 deletions
diff --git a/src/glsl/nir/nir_builder.h b/src/glsl/nir/nir_builder.h index b909f483579..332bb0246df 100644 --- a/src/glsl/nir/nir_builder.h +++ b/src/glsl/nir/nir_builder.h @@ -322,4 +322,16 @@ nir_store_var(nir_builder *build, nir_variable *var, nir_ssa_def *value) nir_builder_instr_insert(build, &store->instr); } +static inline nir_ssa_def * +nir_load_system_value(nir_builder *build, nir_intrinsic_op op, int index) +{ + nir_intrinsic_instr *load = nir_intrinsic_instr_create(build->shader, op); + load->num_components = nir_intrinsic_infos[op].dest_components; + load->const_index[0] = index; + nir_ssa_dest_init(&load->instr, &load->dest, + nir_intrinsic_infos[op].dest_components, NULL); + nir_builder_instr_insert(build, &load->instr); + return &load->dest.ssa; +} + #endif /* NIR_BUILDER_H */ diff --git a/src/glsl/nir/nir_lower_clip.c b/src/glsl/nir/nir_lower_clip.c index 36cc578d1ed..46301351c96 100644 --- a/src/glsl/nir/nir_lower_clip.c +++ b/src/glsl/nir/nir_lower_clip.c @@ -180,18 +180,11 @@ lower_clip_vs(nir_function_impl *impl, unsigned ucp_enables, for (int plane = 0; plane < MAX_CLIP_PLANES; plane++) { if (ucp_enables & (1 << plane)) { - nir_intrinsic_instr *ucp; - - /* insert intrinsic to fetch ucp[plane]: */ - ucp = nir_intrinsic_instr_create(b.shader, - nir_intrinsic_load_user_clip_plane); - ucp->num_components = 4; - ucp->const_index[0] = plane; - nir_ssa_dest_init(&ucp->instr, &ucp->dest, 4, NULL); - nir_builder_instr_insert(&b, &ucp->instr); + nir_ssa_def *ucp = + nir_load_system_value(&b, nir_intrinsic_load_user_clip_plane, plane); /* calculate clipdist[plane] - dot(ucp, cv): */ - clipdist[plane] = nir_fdot4(&b, &ucp->dest.ssa, cv); + clipdist[plane] = nir_fdot4(&b, ucp, cv); } else { /* 0.0 == don't-clip == disabled: */ |