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 "brw_nir.h" 32 #include "brw_program.h" 33 #include "brw_shader.h" 34 #include "brw_state.h" 35 #include "program/prog_parameter.h" 36 37 static void 38 brw_tes_debug_recompile(struct brw_context *brw, struct gl_program *prog, 39 const struct brw_tes_prog_key *key) 40 { 41 perf_debug("Recompiling tessellation evaluation shader for program %d\n", 42 prog->Id); 43 44 bool found = false; 45 const struct brw_tes_prog_key *old_key = 46 brw_find_previous_compile(&brw->cache, BRW_CACHE_TES_PROG, 47 key->program_string_id); 48 49 if (!old_key) { 50 perf_debug(" Didn't find previous compile in the shader cache for " 51 "debug\n"); 52 return; 53 } 54 55 found |= brw_debug_recompile_sampler_key(brw, &old_key->tex, &key->tex); 56 found |= key_debug(brw, "inputs read", old_key->inputs_read, 57 key->inputs_read); 58 found |= key_debug(brw, "patch inputs read", old_key->patch_inputs_read, 59 key->patch_inputs_read); 60 61 if (!found) { 62 perf_debug(" Something else\n"); 63 } 64 } 65 66 static bool 67 brw_codegen_tes_prog(struct brw_context *brw, 68 struct brw_program *tep, 69 struct brw_tes_prog_key *key) 70 { 71 const struct brw_compiler *compiler = brw->screen->compiler; 72 const struct gen_device_info *devinfo = &brw->screen->devinfo; 73 struct brw_stage_state *stage_state = &brw->tes.base; 74 nir_shader *nir = tep->program.nir; 75 struct brw_tes_prog_data prog_data; 76 bool start_busy = false; 77 double start_time = 0; 78 79 memset(&prog_data, 0, sizeof(prog_data)); 80 81 brw_assign_common_binding_table_offsets(devinfo, &tep->program, 82 &prog_data.base.base, 0); 83 84 /* Allocate the references to the uniforms that will end up in the 85 * prog_data associated with the compiled program, and which will be freed 86 * by the state cache. 87 * 88 * Note: param_count needs to be num_uniform_components * 4, since we add 89 * padding around uniform values below vec4 size, so the worst case is that 90 * every uniform is a float which gets padded to the size of a vec4. 91 */ 92 int param_count = nir->num_uniforms / 4; 93 94 prog_data.base.base.param = 95 rzalloc_array(NULL, const gl_constant_value *, param_count); 96 prog_data.base.base.pull_param = 97 rzalloc_array(NULL, const gl_constant_value *, param_count); 98 prog_data.base.base.image_param = 99 rzalloc_array(NULL, struct brw_image_param, 100 tep->program.info.num_images); 101 prog_data.base.base.nr_params = param_count; 102 prog_data.base.base.nr_image_params = tep->program.info.num_images; 103 104 brw_nir_setup_glsl_uniforms(nir, &tep->program, &prog_data.base.base, 105 compiler->scalar_stage[MESA_SHADER_TESS_EVAL]); 106 107 int st_index = -1; 108 if (unlikely(INTEL_DEBUG & DEBUG_SHADER_TIME)) 109 st_index = brw_get_shader_time_index(brw, &tep->program, ST_TES, true); 110 111 if (unlikely(brw->perf_debug)) { 112 start_busy = brw->batch.last_bo && drm_intel_bo_busy(brw->batch.last_bo); 113 start_time = get_time(); 114 } 115 116 struct brw_vue_map input_vue_map; 117 brw_compute_tess_vue_map(&input_vue_map, key->inputs_read, 118 key->patch_inputs_read); 119 120 void *mem_ctx = ralloc_context(NULL); 121 unsigned program_size; 122 char *error_str; 123 const unsigned *program = 124 brw_compile_tes(compiler, brw, mem_ctx, key, &input_vue_map, &prog_data, 125 nir, &tep->program, st_index, &program_size, &error_str); 126 if (program == NULL) { 127 tep->program.sh.data->LinkStatus = false; 128 ralloc_strcat(&tep->program.sh.data->InfoLog, error_str); 129 130 _mesa_problem(NULL, "Failed to compile tessellation evaluation shader: " 131 "%s\n", error_str); 132 133 ralloc_free(mem_ctx); 134 return false; 135 } 136 137 if (unlikely(brw->perf_debug)) { 138 if (tep->compiled_once) { 139 brw_tes_debug_recompile(brw, &tep->program, key); 140 } 141 if (start_busy && !drm_intel_bo_busy(brw->batch.last_bo)) { 142 perf_debug("TES compile took %.03f ms and stalled the GPU\n", 143 (get_time() - start_time) * 1000); 144 } 145 tep->compiled_once = true; 146 } 147 148 /* Scratch space is used for register spilling */ 149 brw_alloc_stage_scratch(brw, stage_state, 150 prog_data.base.base.total_scratch, 151 devinfo->max_tes_threads); 152 153 brw_upload_cache(&brw->cache, BRW_CACHE_TES_PROG, 154 key, sizeof(*key), 155 program, program_size, 156 &prog_data, sizeof(prog_data), 157 &stage_state->prog_offset, &brw->tes.base.prog_data); 158 ralloc_free(mem_ctx); 159 160 return true; 161 } 162 163 void 164 brw_tes_populate_key(struct brw_context *brw, 165 struct brw_tes_prog_key *key) 166 { 167 struct brw_program *tcp = (struct brw_program *) brw->tess_ctrl_program; 168 struct brw_program *tep = (struct brw_program *) brw->tess_eval_program; 169 struct gl_program *prog = &tep->program; 170 171 uint64_t per_vertex_slots = prog->info.inputs_read; 172 uint32_t per_patch_slots = prog->info.patch_inputs_read; 173 174 memset(key, 0, sizeof(*key)); 175 176 key->program_string_id = tep->id; 177 178 /* The TCS may have additional outputs which aren't read by the 179 * TES (possibly for cross-thread communication). These need to 180 * be stored in the Patch URB Entry as well. 181 */ 182 if (tcp) { 183 struct gl_program *tcp_prog = &tcp->program; 184 per_vertex_slots |= tcp_prog->info.outputs_written & 185 ~(VARYING_BIT_TESS_LEVEL_INNER | VARYING_BIT_TESS_LEVEL_OUTER); 186 per_patch_slots |= tcp_prog->info.patch_outputs_written; 187 } 188 189 key->inputs_read = per_vertex_slots; 190 key->patch_inputs_read = per_patch_slots; 191 192 /* _NEW_TEXTURE */ 193 brw_populate_sampler_prog_key_data(&brw->ctx, prog, &key->tex); 194 } 195 196 void 197 brw_upload_tes_prog(struct brw_context *brw) 198 { 199 struct brw_stage_state *stage_state = &brw->tes.base; 200 struct brw_tes_prog_key key; 201 /* BRW_NEW_TESS_PROGRAMS */ 202 struct brw_program *tep = (struct brw_program *) brw->tess_eval_program; 203 204 if (!brw_state_dirty(brw, 205 _NEW_TEXTURE, 206 BRW_NEW_TESS_PROGRAMS)) 207 return; 208 209 brw_tes_populate_key(brw, &key); 210 211 if (!brw_search_cache(&brw->cache, BRW_CACHE_TES_PROG, 212 &key, sizeof(key), 213 &stage_state->prog_offset, 214 &brw->tes.base.prog_data)) { 215 bool success = brw_codegen_tes_prog(brw, tep, &key); 216 assert(success); 217 (void)success; 218 } 219 } 220 221 222 bool 223 brw_tes_precompile(struct gl_context *ctx, 224 struct gl_shader_program *shader_prog, 225 struct gl_program *prog) 226 { 227 struct brw_context *brw = brw_context(ctx); 228 struct brw_tes_prog_key key; 229 uint32_t old_prog_offset = brw->tes.base.prog_offset; 230 struct brw_stage_prog_data *old_prog_data = brw->tes.base.prog_data; 231 bool success; 232 233 struct brw_program *btep = brw_program(prog); 234 235 memset(&key, 0, sizeof(key)); 236 237 key.program_string_id = btep->id; 238 key.inputs_read = prog->nir->info->inputs_read; 239 key.patch_inputs_read = prog->nir->info->patch_inputs_read; 240 241 if (shader_prog->_LinkedShaders[MESA_SHADER_TESS_CTRL]) { 242 struct gl_program *tcp = 243 shader_prog->_LinkedShaders[MESA_SHADER_TESS_CTRL]->Program; 244 key.inputs_read |= tcp->nir->info->outputs_written & 245 ~(VARYING_BIT_TESS_LEVEL_INNER | VARYING_BIT_TESS_LEVEL_OUTER); 246 key.patch_inputs_read |= tcp->nir->info->patch_outputs_written; 247 } 248 249 brw_setup_tex_for_precompile(brw, &key.tex, prog); 250 251 success = brw_codegen_tes_prog(brw, btep, &key); 252 253 brw->tes.base.prog_offset = old_prog_offset; 254 brw->tes.base.prog_data = old_prog_data; 255 256 return success; 257 } 258
