-}
-
-static nir_ssa_def *
-get_texture_size(nir_builder *b, nir_tex_instr *tex)
-{
- b->cursor = nir_before_instr(&tex->instr);
-
- nir_tex_instr *txs;
-
- unsigned num_srcs = 1; /* One for the LOD */
- for (unsigned i = 0; i < tex->num_srcs; i++) {
- if (tex->src[i].src_type == nir_tex_src_texture_deref ||
- tex->src[i].src_type == nir_tex_src_sampler_deref ||
- tex->src[i].src_type == nir_tex_src_texture_offset ||
- tex->src[i].src_type == nir_tex_src_sampler_offset ||
- tex->src[i].src_type == nir_tex_src_texture_handle ||
- tex->src[i].src_type == nir_tex_src_sampler_handle)
- num_srcs++;
- }
-
- txs = nir_tex_instr_create(b->shader, num_srcs);
- txs->op = nir_texop_txs;
- txs->sampler_dim = tex->sampler_dim;
- txs->is_array = tex->is_array;
- txs->is_shadow = tex->is_shadow;
- txs->is_new_style_shadow = tex->is_new_style_shadow;
- txs->texture_index = tex->texture_index;
- txs->sampler_index = tex->sampler_index;
- txs->dest_type = nir_type_int;
-
- unsigned idx = 0;
- for (unsigned i = 0; i < tex->num_srcs; i++) {
- if (tex->src[i].src_type == nir_tex_src_texture_deref ||
- tex->src[i].src_type == nir_tex_src_sampler_deref ||
- tex->src[i].src_type == nir_tex_src_texture_offset ||
- tex->src[i].src_type == nir_tex_src_sampler_offset ||
- tex->src[i].src_type == nir_tex_src_texture_handle ||
- tex->src[i].src_type == nir_tex_src_sampler_handle) {
- nir_src_copy(&txs->src[idx].src, &tex->src[i].src, txs);
- txs->src[idx].src_type = tex->src[i].src_type;
- idx++;
- }
- }
- /* Add in an LOD because some back-ends require it */
- txs->src[idx].src = nir_src_for_ssa(nir_imm_int(b, 0));
- txs->src[idx].src_type = nir_tex_src_lod;
-
- nir_ssa_dest_init(&txs->instr, &txs->dest,
- nir_tex_instr_dest_size(txs), 32, NULL);
- nir_builder_instr_insert(b, &txs->instr);
-
- return nir_i2f32(b, &txs->dest.ssa);
-}
-
-static nir_ssa_def *
-get_texture_lod(nir_builder *b, nir_tex_instr *tex)
-{
- b->cursor = nir_before_instr(&tex->instr);
-
- nir_tex_instr *tql;
-
- unsigned num_srcs = 0;
- for (unsigned i = 0; i < tex->num_srcs; i++) {
- if (tex->src[i].src_type == nir_tex_src_coord ||
- tex->src[i].src_type == nir_tex_src_texture_deref ||
- tex->src[i].src_type == nir_tex_src_sampler_deref ||
- tex->src[i].src_type == nir_tex_src_texture_offset ||
- tex->src[i].src_type == nir_tex_src_sampler_offset ||
- tex->src[i].src_type == nir_tex_src_texture_handle ||
- tex->src[i].src_type == nir_tex_src_sampler_handle)
- num_srcs++;
- }
-
- tql = nir_tex_instr_create(b->shader, num_srcs);
- tql->op = nir_texop_lod;
- tql->coord_components = tex->coord_components;
- tql->sampler_dim = tex->sampler_dim;
- tql->is_array = tex->is_array;
- tql->is_shadow = tex->is_shadow;
- tql->is_new_style_shadow = tex->is_new_style_shadow;
- tql->texture_index = tex->texture_index;
- tql->sampler_index = tex->sampler_index;
- tql->dest_type = nir_type_float;
-
- unsigned idx = 0;
- for (unsigned i = 0; i < tex->num_srcs; i++) {
- if (tex->src[i].src_type == nir_tex_src_coord ||
- tex->src[i].src_type == nir_tex_src_texture_deref ||
- tex->src[i].src_type == nir_tex_src_sampler_deref ||
- tex->src[i].src_type == nir_tex_src_texture_offset ||
- tex->src[i].src_type == nir_tex_src_sampler_offset ||
- tex->src[i].src_type == nir_tex_src_texture_handle ||
- tex->src[i].src_type == nir_tex_src_sampler_handle) {
- nir_src_copy(&tql->src[idx].src, &tex->src[i].src, tql);
- tql->src[idx].src_type = tex->src[i].src_type;
- idx++;
- }
- }
-
- nir_ssa_dest_init(&tql->instr, &tql->dest, 2, 32, NULL);
- nir_builder_instr_insert(b, &tql->instr);
-
- /* The LOD is the y component of the result */
- return nir_channel(b, &tql->dest.ssa, 1);