1 /* 2 * Copyright 2016 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 #include "nir_builder.h" 25 26 void 27 nir_lower_tes_patch_vertices(nir_shader *tes_nir, unsigned patch_vertices) 28 { 29 nir_foreach_function(function, tes_nir) { 30 if (function->impl) { 31 nir_foreach_block(block, function->impl) { 32 nir_builder b; 33 nir_builder_init(&b, function->impl); 34 nir_foreach_instr_safe(instr, block) { 35 if (instr->type == nir_instr_type_intrinsic) { 36 nir_intrinsic_instr *intr = nir_instr_as_intrinsic(instr); 37 if (intr->intrinsic != nir_intrinsic_load_patch_vertices_in) 38 continue; 39 40 b.cursor = nir_before_instr(&intr->instr); 41 nir_ssa_def *val = nir_imm_int(&b, patch_vertices); 42 nir_ssa_def_rewrite_uses(&intr->dest.ssa, 43 nir_src_for_ssa(val)); 44 nir_instr_remove(instr); 45 } 46 } 47 } 48 49 nir_metadata_preserve(function->impl, nir_metadata_block_index | 50 nir_metadata_dominance); 51 } 52 } 53 } 54
