1 /* 2 * Copyright 2014 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 21 * DEALINGS IN THE SOFTWARE. 22 */ 23 24 /** 25 * \file brw_tes.c 26 * 27 * Tessellation evaluation shader state upload code. 28 */ 29 30 #include "brw_context.h" 31 #include "compiler/brw_nir.h" 32 #include "brw_program.h" 33 #include "brw_state.h" 34 #include "program/prog_parameter.h" 35 36 static void 37 brw_tes_debug_recompile(struct brw_context *brw, struct gl_program *prog, 38 const struct brw_tes_prog_key *key) 39 { 40 perf_debug("Recompiling tessellation evaluation shader for program %d\n", 41 prog->Id); 42 43 bool found = false; 44 const struct brw_tes_prog_key *old_key = 45 brw_find_previous_compile(&brw->cache, BRW_CACHE_TES_PROG, 46 key->program_string_id); 47 48 if (!old_key) { 49 perf_debug(" Didn't find previous compile in the shader cache for " 50 "debug\n"); 51 return; 52 } 53 54 found |= brw_debug_recompile_sampler_key(brw, &old_key->tex, &key->tex); 55 found |= key_debug(brw, "inputs read", old_key->inputs_read, 56 key->inputs_read); 57 found |= key_debug(brw, "patch inputs read", old_key->patch_inputs_read, 58 key->patch_inputs_read); 59 60 if (!found) { 61 perf_debug(" Something else\n"); 62 } 63 } 64 65 static bool 66 brw_codegen_tes_prog(struct brw_context *brw, 67 struct brw_program *tep, 68 struct brw_tes_prog_key *key) 69 { 70 const struct brw_compiler *compiler = brw->screen->compiler; 71 const struct gen_device_info *devinfo = &brw->screen->devinfo; 72 struct brw_stage_state *stage_state = &brw->tes.base; 73 nir_shader *nir = tep->program.nir; 74 struct brw_tes_prog_data prog_data; 75 bool start_busy = false; 76 double start_time = 0; 77 78 memset(&prog_data, 0, sizeof(prog_data)); 79 80 void *mem_ctx = ralloc_context(NULL); 81 82 brw_assign_common_binding_table_offsets(devinfo, &tep->program, 83 &prog_data.base.base, 0); 84 85 brw_nir_setup_glsl_uniforms(mem_ctx, nir, &tep->program, 86 &prog_data.base.base, 87 compiler->scalar_stage[MESA_SHADER_TESS_EVAL]); 88 brw_nir_analyze_ubo_ranges(compiler, tep->program.nir, 89 prog_data.base.base.ubo_ranges); 90 91 int st_index = -1; 92 if (unlikely(INTEL_DEBUG & DEBUG_SHADER_TIME)) 93 st_index = brw_get_shader_time_index(brw, &tep->program, ST_TES, true); 94 95 if (unlikely(brw->perf_debug)) { 96 start_busy = brw->batch.last_bo && brw_bo_busy(brw->batch.last_bo); 97 start_time = get_time(); 98 } 99 100 struct brw_vue_map input_vue_map; 101 brw_compute_tess_vue_map(&input_vue_map, key->inputs_read, 102 key->patch_inputs_read); 103 104 char *error_str; 105 const unsigned *program = 106 brw_compile_tes(compiler, brw, mem_ctx, key, &input_vue_map, &prog_data, 107 nir, &tep->program, st_index, &error_str); 108 if (program == NULL) { 109 tep->program.sh.data->LinkStatus = linking_failure; 110 ralloc_strcat(&tep->program.sh.data->InfoLog, error_str); 111 112 _mesa_problem(NULL, "Failed to compile tessellation evaluation shader: " 113 "%s\n", error_str); 114 115 ralloc_free(mem_ctx); 116 return false; 117 } 118 119 if (unlikely(brw->perf_debug)) { 120 if (tep->compiled_once) { 121 brw_tes_debug_recompile(brw, &tep->program, key); 122 } 123 if (start_busy && !brw_bo_busy(brw->batch.last_bo)) { 124 perf_debug("TES compile took %.03f ms and stalled the GPU\n", 125 (get_time() - start_time) * 1000); 126 } 127 tep->compiled_once = true; 128 } 129 130 /* Scratch space is used for register spilling */ 131 brw_alloc_stage_scratch(brw, stage_state, 132 prog_data.base.base.total_scratch); 133 134 /* The param and pull_param arrays will be freed by the shader cache. */ 135 ralloc_steal(NULL, prog_data.base.base.param); 136 ralloc_steal(NULL, prog_data.base.base.pull_param); 137 brw_upload_cache(&brw->cache, BRW_CACHE_TES_PROG, 138 key, sizeof(*key), 139 program, prog_data.base.base.program_size, 140 &prog_data, sizeof(prog_data), 141 &stage_state->prog_offset, &brw->tes.base.prog_data); 142 ralloc_free(mem_ctx); 143 144 return true; 145 } 146 147 void 148 brw_tes_populate_key(struct brw_context *brw, 149 struct brw_tes_prog_key *key) 150 { 151 struct brw_program *tcp = 152 (struct brw_program *) brw->programs[MESA_SHADER_TESS_CTRL]; 153 struct brw_program *tep = 154 (struct brw_program *) brw->programs[MESA_SHADER_TESS_EVAL]; 155 struct gl_program *prog = &tep->program; 156 157 uint64_t per_vertex_slots = prog->info.inputs_read; 158 uint32_t per_patch_slots = prog->info.patch_inputs_read; 159 160 memset(key, 0, sizeof(*key)); 161 162 key->program_string_id = tep->id; 163 164 /* The TCS may have additional outputs which aren't read by the 165 * TES (possibly for cross-thread communication). These need to 166 * be stored in the Patch URB Entry as well. 167 */ 168 if (tcp) { 169 struct gl_program *tcp_prog = &tcp->program; 170 per_vertex_slots |= tcp_prog->info.outputs_written & 171 ~(VARYING_BIT_TESS_LEVEL_INNER | VARYING_BIT_TESS_LEVEL_OUTER); 172 per_patch_slots |= tcp_prog->info.patch_outputs_written; 173 } 174 175 key->inputs_read = per_vertex_slots; 176 key->patch_inputs_read = per_patch_slots; 177 178 /* _NEW_TEXTURE */ 179 brw_populate_sampler_prog_key_data(&brw->ctx, prog, &key->tex); 180 } 181 182 void 183 brw_upload_tes_prog(struct brw_context *brw) 184 { 185 struct brw_stage_state *stage_state = &brw->tes.base; 186 struct brw_tes_prog_key key; 187 /* BRW_NEW_TESS_PROGRAMS */ 188 struct brw_program *tep = 189 (struct brw_program *) brw->programs[MESA_SHADER_TESS_EVAL]; 190 191 if (!brw_state_dirty(brw, 192 _NEW_TEXTURE, 193 BRW_NEW_TESS_PROGRAMS)) 194 return; 195 196 brw_tes_populate_key(brw, &key); 197 198 if (brw_search_cache(&brw->cache, BRW_CACHE_TES_PROG, 199 &key, sizeof(key), 200 &stage_state->prog_offset, 201 &brw->tes.base.prog_data)) 202 return; 203 204 if (brw_disk_cache_upload_program(brw, MESA_SHADER_TESS_EVAL)) 205 return; 206 207 tep = (struct brw_program *) brw->programs[MESA_SHADER_TESS_EVAL]; 208 tep->id = key.program_string_id; 209 210 MAYBE_UNUSED bool success = brw_codegen_tes_prog(brw, tep, &key); 211 assert(success); 212 } 213 214 215 bool 216 brw_tes_precompile(struct gl_context *ctx, 217 struct gl_shader_program *shader_prog, 218 struct gl_program *prog) 219 { 220 struct brw_context *brw = brw_context(ctx); 221 struct brw_tes_prog_key key; 222 uint32_t old_prog_offset = brw->tes.base.prog_offset; 223 struct brw_stage_prog_data *old_prog_data = brw->tes.base.prog_data; 224 bool success; 225 226 struct brw_program *btep = brw_program(prog); 227 228 memset(&key, 0, sizeof(key)); 229 230 key.program_string_id = btep->id; 231 key.inputs_read = prog->nir->info.inputs_read; 232 key.patch_inputs_read = prog->nir->info.patch_inputs_read; 233 234 if (shader_prog->_LinkedShaders[MESA_SHADER_TESS_CTRL]) { 235 struct gl_program *tcp = 236 shader_prog->_LinkedShaders[MESA_SHADER_TESS_CTRL]->Program; 237 key.inputs_read |= tcp->nir->info.outputs_written & 238 ~(VARYING_BIT_TESS_LEVEL_INNER | VARYING_BIT_TESS_LEVEL_OUTER); 239 key.patch_inputs_read |= tcp->nir->info.patch_outputs_written; 240 } 241 242 brw_setup_tex_for_precompile(brw, &key.tex, prog); 243 244 success = brw_codegen_tes_prog(brw, btep, &key); 245 246 brw->tes.base.prog_offset = old_prog_offset; 247 brw->tes.base.prog_data = old_prog_data; 248 249 return success; 250 } 251
