source/core/program.cpp

   1 #include <cstring>
   2 #include <set>
   3 #include <msp/core/algorithm.h>
   4 #include <msp/core/hash.h>
   5 #include <msp/core/maputils.h>
   6 #include <msp/core/raii.h>
   7 #include <msp/gl/extensions/arb_es2_compatibility.h>
   8 #include <msp/gl/extensions/arb_fragment_shader.h>
   9 #include <msp/gl/extensions/arb_gl_spirv.h>
  10 #include <msp/gl/extensions/arb_geometry_shader4.h>
  11 #include <msp/gl/extensions/arb_separate_shader_objects.h>
  12 #include <msp/gl/extensions/arb_shader_objects.h>
  13 #include <msp/gl/extensions/arb_uniform_buffer_object.h>
  14 #include <msp/gl/extensions/arb_vertex_shader.h>
  15 #include <msp/gl/extensions/ext_gpu_shader4.h>
  16 #include <msp/gl/extensions/nv_non_square_matrices.h>
  17 #include <msp/io/print.h>
  18 #include <msp/strings/format.h>
  19 #include "buffer.h"
  20 #include "error.h"
  21 #include "misc.h"
  22 #include "program.h"
  23 #include "resources.h"
  24 #include "shader.h"
  25 #include "glsl/compiler.h"
  26
  27 using namespace std;
  28
  29 namespace Msp {
  30 namespace GL {
  31
  32 Program::Program()
  33 {
  34         init();
  35 }
  36
  37 Program::Program(const string &source)
  38 {
  39         init();
  40
  41         GlslModule mod;
  42         mod.set_source(source);
  43         add_stages(mod);
  44
  45         link();
  46         module = 0;
  47 }
  48
  49 Program::Program(const string &vert, const string &frag)
  50 {
  51         init();
  52
  53 #pragma GCC diagnostic push
  54 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
  55         attach_shader_owned(new VertexShader(vert));
  56         attach_shader_owned(new FragmentShader(frag));
  57 #pragma GCC diagnostic pop
  58         link();
  59 }
  60
  61 Program::Program(const Module &mod, const map<string, int> &spec_values)
  62 {
  63         init();
  64         add_stages(mod, spec_values);
  65         link();
  66 }
  67
  68 void Program::init()
  69 {
  70         static Require _req(ARB_shader_objects);
  71
  72         id = glCreateProgram();
  73         module = 0;
  74         bindings = 0;
  75         linked = false;
  76 }
  77
  78 Program::~Program()
  79 {
  80         for(vector<unsigned>::iterator i=stage_ids.begin(); i!=stage_ids.end(); ++i)
  81                 glDeleteShader(*i);
  82         glDeleteProgram(id);
  83 }
  84
  85 void Program::add_stages(const Module &mod, const map<string, int> &spec_values)
  86 {
  87         if(!stage_ids.empty())
  88                 throw invalid_operation("Program::add_stages");
  89
  90         switch(mod.get_format())
  91         {
  92         case Module::GLSL: return add_glsl_stages(static_cast<const GlslModule &>(mod), spec_values);
  93         case Module::SPIR_V: return add_spirv_stages(static_cast<const SpirVModule &>(mod), spec_values);
  94         default: throw invalid_argument("Program::add_stages");
  95         }
  96 }
  97
  98 unsigned Program::add_stage(GLenum type)
  99 {
 100         switch(type)
 101         {
 102         case GL_VERTEX_SHADER: { static Require _req(ARB_vertex_shader); } break;
 103         case GL_GEOMETRY_SHADER: { static Require _req(ARB_geometry_shader4); } break;
 104         case GL_FRAGMENT_SHADER: { static Require _req(ARB_fragment_shader); } break;
 105         default: throw invalid_argument("Program::add_stage");
 106         }
 107
 108         unsigned stage_id = glCreateShader(type);
 109         stage_ids.push_back(stage_id);
 110         glAttachShader(id, stage_id);
 111
 112         return stage_id;
 113 }
 114
 115 void Program::add_glsl_stages(const GlslModule &mod, const map<string, int> &spec_values)
 116 {
 117         module = &mod;
 118
 119         SL::Compiler compiler;
 120         compiler.set_source(mod.get_prepared_source(), "<module>");
 121         compiler.specialize(spec_values);
 122         compiler.compile(SL::Compiler::PROGRAM);
 123 #ifdef DEBUG
 124         string diagnostics = compiler.get_diagnostics();
 125         if(!diagnostics.empty())
 126                 IO::print("Program diagnostics:\n%s\n", diagnostics);
 127 #endif
 128
 129         vector<SL::Stage::Type> stages = compiler.get_stages();
 130         for(vector<SL::Stage::Type>::const_iterator i=stages.begin(); i!=stages.end(); ++i)
 131         {
 132                 unsigned stage_id = 0;
 133                 switch(*i)
 134                 {
 135                 case SL::Stage::VERTEX: stage_id = add_stage(GL_VERTEX_SHADER); break;
 136                 case SL::Stage::GEOMETRY: stage_id = add_stage(GL_GEOMETRY_SHADER); break;
 137                 case SL::Stage::FRAGMENT: stage_id = add_stage(GL_FRAGMENT_SHADER); break;
 138                 default: throw invalid_operation("Program::add_glsl_stages");
 139                 }
 140
 141                 string stage_src = compiler.get_stage_glsl(*i);
 142                 const char *src_ptr = stage_src.data();
 143                 int src_len = stage_src.size();
 144                 glShaderSource(stage_id, 1, &src_ptr, &src_len);
 145
 146                 if(*i==SL::Stage::VERTEX)
 147                 {
 148                         const map<string, unsigned> &attribs = compiler.get_vertex_attributes();
 149                         for(map<string, unsigned>::const_iterator j=attribs.begin(); j!=attribs.end(); ++j)
 150                                 glBindAttribLocation(id, j->second, j->first.c_str());
 151                 }
 152
 153                 if(*i==SL::Stage::FRAGMENT && EXT_gpu_shader4)
 154                 {
 155                         const map<string, unsigned> &frag_outs = compiler.get_fragment_outputs();
 156                         for(map<string, unsigned>::const_iterator j=frag_outs.begin(); j!=frag_outs.end(); ++j)
 157                                 glBindFragDataLocation(id, j->second, j->first.c_str());
 158                 }
 159
 160                 compile_glsl_stage(stage_id);
 161         }
 162
 163         if(!bindings)
 164                 bindings = new Bindings;
 165         bindings->textures = compiler.get_texture_bindings();
 166         bindings->blocks = compiler.get_uniform_block_bindings();
 167 }
 168
 169 void Program::compile_glsl_stage(unsigned stage_id)
 170 {
 171         glCompileShader(stage_id);
 172         bool compiled = get_shader_i(stage_id, GL_COMPILE_STATUS);
 173
 174         GLsizei info_log_len = get_shader_i(stage_id, GL_INFO_LOG_LENGTH);
 175         string info_log(info_log_len+1, 0);
 176         glGetShaderInfoLog(stage_id, info_log_len+1, &info_log_len, &info_log[0]);
 177         info_log.erase(info_log_len);
 178         if(module && module->get_format()==Module::GLSL)
 179                 info_log = static_cast<const GlslModule *>(module)->get_source_map().translate_errors(info_log);
 180
 181         if(!compiled)
 182                 throw compile_error(info_log);
 183 #ifdef DEBUG
 184         if(!info_log.empty())
 185                 IO::print("Shader compile info log:\n%s", info_log);
 186 #endif
 187 }
 188
 189 void Program::add_spirv_stages(const SpirVModule &mod, const map<string, int> &spec_values)
 190 {
 191         static Require _req(ARB_gl_spirv);
 192         static Require _req2(ARB_ES2_compatibility);
 193
 194         module = &mod;
 195
 196         const vector<SpirVModule::EntryPoint> &entry_points = mod.get_entry_points();
 197         std::set<SpirVModule::Stage> stages;
 198         for(vector<SpirVModule::EntryPoint>::const_iterator i=entry_points.begin(); i!=entry_points.end(); ++i)
 199         {
 200                 if(stages.count(i->stage))
 201                         throw invalid_argument("Program::add_spirv_stages");
 202
 203                 switch(i->stage)
 204                 {
 205                 case SpirVModule::VERTEX: add_stage(GL_VERTEX_SHADER); break;
 206                 case SpirVModule::GEOMETRY: add_stage(GL_GEOMETRY_SHADER); break;
 207                 case SpirVModule::FRAGMENT: add_stage(GL_FRAGMENT_SHADER); break;
 208                 default: throw invalid_operation("Program::add_spirv_stages");
 209                 }
 210
 211                 stages.insert(i->stage);
 212         }
 213
 214         const vector<UInt32> &code = mod.get_code();
 215         glShaderBinary(stage_ids.size(), &stage_ids[0], GL_SHADER_BINARY_FORMAT_SPIR_V, &code[0], code.size()*4);
 216
 217         const vector<SpirVModule::SpecConstant> &spec_consts = mod.get_spec_constants();
 218         vector<unsigned> spec_id_array;
 219         vector<unsigned> spec_value_array;
 220         spec_id_array.reserve(spec_consts.size());
 221         spec_value_array.reserve(spec_consts.size());
 222         for(vector<SpirVModule::SpecConstant>::const_iterator i=spec_consts.begin(); i!=spec_consts.end(); ++i)
 223         {
 224                 map<string, int>::const_iterator j = spec_values.find(i->name);
 225                 if(j!=spec_values.end())
 226                 {
 227                         spec_id_array.push_back(i->constant_id);
 228                         spec_value_array.push_back(j->second);
 229                 }
 230         }
 231
 232         vector<SpirVModule::EntryPoint>::const_iterator j=entry_points.begin();
 233         for(vector<unsigned>::const_iterator i=stage_ids.begin(); i!=stage_ids.end(); ++i, ++j)
 234                 glSpecializeShader(*i, j->name.c_str(), spec_id_array.size(), &spec_id_array[0], &spec_value_array[0]);
 235 }
 236
 237 #pragma GCC diagnostic push
 238 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 239 void Program::attach_shader(Shader &shader)
 240 {
 241         unsigned shader_id = shader.steal_id();
 242         if(!shader_id)
 243                 throw invalid_argument("Program::attach_shader");
 244         stage_ids.push_back(shader_id);
 245         compile_glsl_stage(shader_id);
 246 }
 247
 248 void Program::attach_shader_owned(Shader *shader)
 249 {
 250         attach_shader(*shader);
 251         delete shader;
 252 }
 253
 254 void Program::detach_shader(Shader &)
 255 {
 256 }
 257
 258 const vector<Shader *> &Program::get_attached_shaders() const
 259 {
 260         static vector<Shader *> dummy;
 261         return dummy;
 262 }
 263
 264 void Program::bind_attribute(unsigned index, const string &name)
 265 {
 266         static Require _req(ARB_vertex_shader);
 267         glBindAttribLocation(id, index, name.c_str());
 268 }
 269
 270 void Program::bind_attribute(VertexAttribute attr, const string &name)
 271 {
 272         bind_attribute(get_attribute_semantic(attr), name);
 273 }
 274
 275 void Program::bind_fragment_data(unsigned index, const string &name)
 276 {
 277         static Require _req(EXT_gpu_shader4);
 278         glBindFragDataLocation(id, index, name.c_str());
 279 }
 280 #pragma GCC diagnostic pop
 281
 282 void Program::link()
 283 {
 284         if(stage_ids.empty())
 285                 throw invalid_operation("Program::link");
 286
 287         uniforms.clear();
 288         uniform_blocks.clear();
 289         attributes.clear();
 290
 291         glLinkProgram(id);
 292         linked = get_program_i(id, GL_LINK_STATUS);
 293
 294         GLsizei info_log_len = get_program_i(id, GL_INFO_LOG_LENGTH);
 295         string info_log(info_log_len+1, 0);
 296         glGetProgramInfoLog(id, info_log_len+1, &info_log_len, &info_log[0]);
 297         info_log.erase(info_log_len);
 298         if(module && module->get_format()==Module::GLSL)
 299                 info_log = static_cast<const GlslModule *>(module)->get_source_map().translate_errors(info_log);
 300
 301         if(!linked)
 302                 throw compile_error(info_log);
 303 #ifdef DEBUG
 304         if(!info_log.empty())
 305                 IO::print("Program link info log:\n%s", info_log);
 306 #endif
 307
 308         if(module->get_format()==Module::GLSL)
 309         {
 310                 query_uniforms();
 311                 query_attributes();
 312                 if(bindings)
 313                 {
 314                         for(unsigned i=0; i<uniform_blocks.size(); ++i)
 315                         {
 316                                 map<string, unsigned>::const_iterator j = bindings->blocks.find(uniform_blocks[i].name);
 317                                 if(j!=bindings->blocks.end())
 318                                 {
 319                                         glUniformBlockBinding(id, i, j->second);
 320                                         uniform_blocks[i].bind_point = j->second;
 321                                 }
 322                         }
 323
 324                         Conditional<BindRestore> _bind(!ARB_separate_shader_objects, this);
 325                         for(map<string, unsigned>::const_iterator i=bindings->textures.begin(); i!=bindings->textures.end(); ++i)
 326                         {
 327                                 int location = get_uniform_location(i->first);
 328                                 if(location>=0)
 329                                 {
 330                                         if(ARB_separate_shader_objects)
 331                                                 glProgramUniform1i(id, location, i->second);
 332                                         else
 333                                                 glUniform1i(location, i->second);
 334                                 }
 335                         }
 336
 337                         delete bindings;
 338                         bindings = 0;
 339                 }
 340         }
 341         else if(module->get_format()==Module::SPIR_V)
 342         {
 343                 collect_uniforms();
 344                 collect_attributes();
 345         }
 346
 347         for(vector<UniformInfo>::const_iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
 348                 require_type(i->type);
 349         for(vector<AttributeInfo>::const_iterator i=attributes.begin(); i!=attributes.end(); ++i)
 350                 require_type(i->type);
 351 }
 352
 353 void Program::query_uniforms()
 354 {
 355         unsigned count = get_program_i(id, GL_ACTIVE_UNIFORMS);
 356         uniforms.reserve(count);
 357         vector<string> uniform_names(count);
 358         for(unsigned i=0; i<count; ++i)
 359         {
 360                 char name[128];
 361                 int len = 0;
 362                 int size;
 363                 GLenum type;
 364                 glGetActiveUniform(id, i, sizeof(name), &len, &size, &type, name);
 365                 if(len && strncmp(name, "gl_", 3))
 366                 {
 367                         /* Some implementations report the first element of a uniform array,
 368                         others report just the name of the array itself. */
 369                         if(len>3 && !strcmp(name+len-3, "[0]"))
 370                                 name[len-3] = 0;
 371
 372                         uniforms.push_back(UniformInfo());
 373                         UniformInfo &info = uniforms.back();
 374                         info.name = name;
 375                         info.tag = name;
 376                         info.array_size = size;
 377                         info.type = from_gl_type(type);
 378                         uniform_names[i] = name;
 379                 }
 380         }
 381
 382         sort_member(uniforms, &UniformInfo::tag);
 383
 384         if(ARB_uniform_buffer_object)
 385         {
 386                 vector<UniformInfo *> uniforms_by_index(count);
 387                 for(unsigned i=0; i<count; ++i)
 388                         if(!uniform_names[i].empty())
 389                                 // The element is already known to be present
 390                                 uniforms_by_index[i] = &*lower_bound_member(uniforms, Tag(uniform_names[i]), &UniformInfo::tag);
 391                 query_uniform_blocks(uniforms_by_index);
 392         }
 393
 394         uniform_blocks.push_back(UniformBlockInfo());
 395         UniformBlockInfo &default_block = uniform_blocks.back();
 396
 397         for(vector<UniformInfo>::iterator i=uniforms.begin(); i!=uniforms.end(); ++i)
 398                 if(!i->block)
 399                 {
 400                         i->location = glGetUniformLocation(id, i->name.c_str());
 401                         i->block = &default_block;
 402                         default_block.uniforms.push_back(&*i);
 403
 404                         if(is_image(i->type) && i->location>=0)
 405                                 glGetUniformiv(id, i->location, &i->binding);
 406                 }
 407
 408         default_block.layout_hash = compute_layout_hash(default_block.uniforms);
 409
 410         update_layout_hash();
 411 }
 412
 413 void Program::query_uniform_blocks(const vector<UniformInfo *> &uniforms_by_index)
 414 {
 415         unsigned count = get_program_i(id, GL_ACTIVE_UNIFORM_BLOCKS);
 416         // Reserve an extra index for the default block
 417         uniform_blocks.reserve(count+1);
 418         for(unsigned i=0; i<count; ++i)
 419         {
 420                 char name[128];
 421                 int len;
 422                 glGetActiveUniformBlockName(id, i, sizeof(name), &len, name);
 423                 uniform_blocks.push_back(UniformBlockInfo());
 424                 UniformBlockInfo &info = uniform_blocks.back();
 425                 info.name = name;
 426
 427                 int value;
 428                 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_DATA_SIZE, &value);
 429                 info.data_size = value;
 430
 431                 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_BINDING, &value);
 432                 info.bind_point = value;
 433
 434                 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS, &value);
 435                 vector<int> indices(value);
 436                 glGetActiveUniformBlockiv(id, i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES, &indices[0]);
 437                 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
 438                 {
 439                         if(!uniforms_by_index[*j])
 440                                 throw logic_error("Program::link");
 441                         info.uniforms.push_back(uniforms_by_index[*j]);
 442                         uniforms_by_index[*j]->block = &info;
 443                 }
 444
 445                 vector<unsigned> query_indices(indices.begin(), indices.end());
 446                 vector<int> values(indices.size());
 447                 glGetActiveUniformsiv(id, query_indices.size(), &query_indices[0], GL_UNIFORM_OFFSET, &values[0]);
 448                 for(unsigned j=0; j<indices.size(); ++j)
 449                         uniforms_by_index[indices[j]]->offset = values[j];
 450
 451                 query_indices.clear();
 452                 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
 453                         if(uniforms_by_index[*j]->array_size>1)
 454                                 query_indices.push_back(*j);
 455                 if(!query_indices.empty())
 456                 {
 457                         glGetActiveUniformsiv(id, query_indices.size(), &query_indices[0], GL_UNIFORM_ARRAY_STRIDE, &values[0]);
 458                         for(unsigned j=0; j<query_indices.size(); ++j)
 459                                 uniforms_by_index[query_indices[j]]->array_stride = values[j];
 460                 }
 461
 462                 query_indices.clear();
 463                 for(vector<int>::iterator j=indices.begin(); j!=indices.end(); ++j)
 464                 {
 465                         DataType t = uniforms_by_index[*j]->type;
 466                         if(is_matrix(t))
 467                                 query_indices.push_back(*j);
 468                 }
 469                 if(!query_indices.empty())
 470                 {
 471                         glGetActiveUniformsiv(id, query_indices.size(), &query_indices[0], GL_UNIFORM_MATRIX_STRIDE, &values[0]);
 472                         for(unsigned j=0; j<query_indices.size(); ++j)
 473                                 uniforms_by_index[query_indices[j]]->matrix_stride = values[j];
 474                 }
 475
 476                 sort(info.uniforms, uniform_location_compare);
 477                 info.layout_hash = compute_layout_hash(info.uniforms);
 478         }
 479 }
 480
 481 void Program::query_attributes()
 482 {
 483         unsigned count = get_program_i(id, GL_ACTIVE_ATTRIBUTES);
 484         attributes.reserve(count);
 485         for(unsigned i=0; i<count; ++i)
 486         {
 487                 char name[128];
 488                 int len = 0;
 489                 int size;
 490                 GLenum type;
 491                 glGetActiveAttrib(id, i, sizeof(name), &len, &size, &type, name);
 492                 if(len && strncmp(name, "gl_", 3))
 493                 {
 494                         if(len>3 && !strcmp(name+len-3, "[0]"))
 495                                 name[len-3] = 0;
 496
 497                         attributes.push_back(AttributeInfo());
 498                         AttributeInfo &info = attributes.back();
 499                         info.name = name;
 500                         info.location = glGetAttribLocation(id, name);
 501                         info.array_size = size;
 502                         info.type = from_gl_type(type);
 503                 }
 504         }
 505 }
 506
 507 void Program::collect_uniforms()
 508 {
 509         const SpirVModule &mod = static_cast<const SpirVModule &>(*module);
 510
 511         // Prepare the default block
 512         uniform_blocks.push_back(UniformBlockInfo());
 513         vector<vector<string> > block_uniform_names(1);
 514
 515         const vector<SpirVModule::Variable> &variables = mod.get_variables();
 516         for(vector<SpirVModule::Variable>::const_iterator i=variables.begin(); i!=variables.end(); ++i)
 517         {
 518                 if(i->storage==SpirVModule::UNIFORM && i->struct_type)
 519                 {
 520                         uniform_blocks.push_back(UniformBlockInfo());
 521                         UniformBlockInfo &info = uniform_blocks.back();
 522                         info.name = i->struct_type->name;
 523                         info.bind_point = i->binding;
 524                         info.data_size = i->struct_type->size;
 525
 526                         string prefix;
 527                         if(!i->name.empty())
 528                                 prefix = i->struct_type->name+".";
 529                         block_uniform_names.push_back(vector<string>());
 530                         collect_block_uniforms(*i->struct_type, prefix, 0, block_uniform_names.back());
 531                 }
 532                 else if(i->storage==SpirVModule::UNIFORM_CONSTANT && i->location>=0)
 533                 {
 534                         block_uniform_names[0].push_back(i->name);
 535                         uniforms.push_back(UniformInfo());
 536                         UniformInfo &info = uniforms.back();
 537                         info.name = i->name;
 538                         info.tag = i->name;
 539                         info.location = i->location;
 540                         info.array_size = i->array_size;
 541                         info.type = i->type;
 542                 }
 543         }
 544
 545         sort_member(uniforms, &UniformInfo::tag);
 546
 547         for(unsigned i=0; i<uniform_blocks.size(); ++i)
 548         {
 549                 UniformBlockInfo &block = uniform_blocks[i];
 550                 const vector<string> &names = block_uniform_names[i];
 551                 for(vector<string>::const_iterator j=names.begin(); j!=names.end(); ++j)
 552                 {
 553                         // The element is already known to be present
 554                         UniformInfo &uni = *lower_bound_member(uniforms, Tag(*j), &UniformInfo::tag);
 555                         block.uniforms.push_back(&uni);
 556                         uni.block = &block;
 557                 }
 558                 sort(block.uniforms, uniform_location_compare);
 559                 block.layout_hash = compute_layout_hash(block.uniforms);
 560         }
 561
 562         update_layout_hash();
 563 }
 564
 565 void Program::collect_block_uniforms(const SpirVModule::Structure &strct, const string &prefix, unsigned base_offset, vector<string> &uniform_names)
 566 {
 567         for(vector<SpirVModule::StructMember>::const_iterator i=strct.members.begin(); i!=strct.members.end(); ++i)
 568         {
 569                 unsigned offset = base_offset+i->offset;
 570                 if(i->struct_type)
 571                 {
 572                         if(i->array_size)
 573                         {
 574                                 for(unsigned j=0; j<i->array_size; ++j, offset+=i->array_stride)
 575                                         collect_block_uniforms(*i->struct_type, format("%s%s[%d].", prefix, i->name, j), offset, uniform_names);
 576                         }
 577                         else
 578                                 collect_block_uniforms(*i->struct_type, prefix+i->name+".", offset, uniform_names);
 579                 }
 580                 else
 581                 {
 582                         string name = prefix+i->name;
 583                         uniform_names.push_back(name);
 584                         uniforms.push_back(UniformInfo());
 585                         UniformInfo &info = uniforms.back();
 586                         info.name = name;
 587                         info.tag = name;
 588                         info.offset = offset;
 589                         info.array_size = i->array_size;
 590                         info.array_stride = i->array_stride;
 591                         info.matrix_stride = i->matrix_stride;
 592                         info.type = i->type;
 593                 }
 594         }
 595 }
 596
 597 void Program::collect_attributes()
 598 {
 599         const SpirVModule &mod = static_cast<const SpirVModule &>(*module);
 600
 601         const vector<SpirVModule::EntryPoint> &entry_points = mod.get_entry_points();
 602         for(vector<SpirVModule::EntryPoint>::const_iterator i=entry_points.begin(); i!=entry_points.end(); ++i)
 603                 if(i->stage==SpirVModule::VERTEX && i->name=="main")
 604                 {
 605                         for(vector<const SpirVModule::Variable *>::const_iterator j=i->globals.begin(); j!=i->globals.end(); ++j)
 606                                 if((*j)->storage==SpirVModule::INPUT)
 607                                 {
 608                                         attributes.push_back(AttributeInfo());
 609                                         AttributeInfo &info = attributes.back();
 610                                         info.name = (*j)->name;
 611                                         info.location = (*j)->location;
 612                                         info.array_size = (*j)->array_size;
 613                                         info.type = (*j)->type;
 614                                 }
 615                 }
 616 }
 617
 618 void Program::update_layout_hash()
 619 {
 620         string layout_descriptor;
 621         for(vector<UniformBlockInfo>::const_iterator i=uniform_blocks.begin(); i!=uniform_blocks.end(); ++i)
 622                 layout_descriptor += format("%d:%x\n", i->bind_point, i->layout_hash);
 623         uniform_layout_hash = hash32(layout_descriptor);
 624 }
 625
 626 Program::LayoutHash Program::compute_layout_hash(const vector<const UniformInfo *> &uniforms)
 627 {
 628         string layout_descriptor;
 629         for(vector<const UniformInfo *>::const_iterator i = uniforms.begin(); i!=uniforms.end(); ++i)
 630                 layout_descriptor += format("%d:%s:%x:%d\n", (*i)->location, (*i)->name, (*i)->type, (*i)->array_size);
 631         return hash32(layout_descriptor);
 632 }
 633
 634 bool Program::uniform_location_compare(const UniformInfo *uni1, const UniformInfo *uni2)
 635 {
 636         return uni1->location<uni2->location;
 637 }
 638
 639 string Program::get_info_log() const
 640 {
 641         GLsizei len = get_program_i(id, GL_INFO_LOG_LENGTH);
 642         string log(len+1, 0);
 643         glGetProgramInfoLog(id, len+1, &len, &log[0]);
 644         log.erase(len);
 645         return log;
 646 }
 647
 648 const Program::UniformBlockInfo &Program::get_uniform_block_info(const string &name) const
 649 {
 650         for(vector<UniformBlockInfo>::const_iterator i=uniform_blocks.begin(); i!=uniform_blocks.end(); ++i)
 651                 if(i->name==name)
 652                         return *i;
 653         throw key_error(name);
 654 }
 655
 656 const Program::UniformInfo &Program::get_uniform_info(const string &name) const
 657 {
 658         vector<UniformInfo>::const_iterator i = lower_bound_member(uniforms, Tag(name), &UniformInfo::tag);
 659         if(i==uniforms.end() || i->name!=name)
 660                 throw key_error(name);
 661         return *i;
 662 }
 663
 664 const Program::UniformInfo &Program::get_uniform_info(Tag tag) const
 665 {
 666         vector<UniformInfo>::const_iterator i = lower_bound_member(uniforms, tag, &UniformInfo::tag);
 667         if(i==uniforms.end() || i->tag!=tag)
 668                 throw key_error(tag);
 669         return *i;
 670 }
 671
 672 int Program::get_uniform_location(const string &name) const
 673 {
 674         if(name[name.size()-1]==']')
 675                 throw invalid_argument("Program::get_uniform_location");
 676
 677         vector<UniformInfo>::const_iterator i = lower_bound_member(uniforms, Tag(name), &UniformInfo::tag);
 678         return i!=uniforms.end() && i->name==name && i->block->bind_point<0 ? i->location : -1;
 679 }
 680
 681 int Program::get_uniform_location(Tag tag) const
 682 {
 683         vector<UniformInfo>::const_iterator i = lower_bound_member(uniforms, tag, &UniformInfo::tag);
 684         return i!=uniforms.end() && i->tag==tag && i->block->bind_point<0 ? i->location : -1;
 685 }
 686
 687 int Program::get_uniform_binding(Tag tag) const
 688 {
 689         vector<UniformInfo>::const_iterator i = lower_bound_member(uniforms, tag, &UniformInfo::tag);
 690         return i!=uniforms.end() && i->tag==tag ? i->binding : -1;
 691 }
 692
 693 const Program::AttributeInfo &Program::get_attribute_info(const string &name) const
 694 {
 695         vector<AttributeInfo>::const_iterator i = lower_bound_member(attributes, name, &AttributeInfo::name);
 696         if(i==attributes.end() || i->name!=name)
 697                 throw key_error(name);
 698         return *i;
 699 }
 700
 701 int Program::get_attribute_location(const string &name) const
 702 {
 703         if(name[name.size()-1]==']')
 704                 throw invalid_argument("Program::get_attribute_location");
 705
 706         vector<AttributeInfo>::const_iterator i = lower_bound_member(attributes, name, &AttributeInfo::name);
 707         return i!=attributes.end() && i->name==name ? i->location : -1;
 708 }
 709
 710 void Program::bind() const
 711 {
 712         if(!linked)
 713                 throw invalid_operation("Program::bind");
 714
 715         if(!set_current(this))
 716                 return;
 717
 718         glUseProgram(id);
 719 }
 720
 721 void Program::unbind()
 722 {
 723         if(!set_current(0))
 724                 return;
 725
 726         glUseProgram(0);
 727 }
 728
 729
 730 Program::UniformInfo::UniformInfo():
 731         block(0),
 732         location(-1),
 733         array_size(0),
 734         array_stride(0),
 735         matrix_stride(0),
 736         type(VOID),
 737         binding(-1)
 738 { }
 739
 740
 741 Program::UniformBlockInfo::UniformBlockInfo():
 742         data_size(0),
 743         bind_point(-1),
 744         layout_hash(0)
 745 { }
 746
 747
 748 Program::AttributeInfo::AttributeInfo():
 749         location(-1),
 750         array_size(0),
 751         type(VOID)
 752 { }
 753
 754
 755 Program::Loader::Loader(Program &p, Collection &c):
 756         DataFile::CollectionObjectLoader<Program>(p, &c)
 757 {
 758         add("module",          &Loader::module);
 759
 760         // Deprecated
 761         add("attribute",       &Loader::attribute);
 762         add("fragment_shader", &Loader::fragment_shader);
 763         add("geometry_shader", &Loader::geometry_shader);
 764         add("vertex_shader",   &Loader::vertex_shader);
 765 }
 766
 767 void Program::Loader::finish()
 768 {
 769         obj.link();
 770 }
 771
 772 void Program::Loader::module(const string &n)
 773 {
 774         map<string, int> spec_values;
 775         SpecializationLoader ldr(spec_values);
 776         load_sub_with(ldr);
 777         obj.add_stages(get_collection().get<Module>(n), spec_values);
 778 }
 779
 780 #pragma GCC diagnostic push
 781 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 782 void Program::Loader::attribute(unsigned i, const string &n)
 783 {
 784         obj.bind_attribute(i, n);
 785 }
 786
 787 void Program::Loader::fragment_shader(const string &src)
 788 {
 789         obj.attach_shader_owned(new FragmentShader(src));
 790 }
 791
 792 void Program::Loader::geometry_shader(const string &src)
 793 {
 794         obj.attach_shader_owned(new GeometryShader(src));
 795 }
 796
 797 void Program::Loader::vertex_shader(const string &src)
 798 {
 799         obj.attach_shader_owned(new VertexShader(src));
 800 }
 801 #pragma GCC diagnostic pop
 802
 803
 804 DataFile::Loader::ActionMap Program::SpecializationLoader::shared_actions;
 805
 806 Program::SpecializationLoader::SpecializationLoader(map<string, int> &sv):
 807         spec_values(sv)
 808 {
 809         set_actions(shared_actions);
 810 }
 811
 812 void Program::SpecializationLoader::init_actions()
 813 {
 814         add("specialize", &SpecializationLoader::specialize_bool);
 815         add("specialize", &SpecializationLoader::specialize_int);
 816 }
 817
 818 void Program::SpecializationLoader::specialize_bool(const string &name, bool value)
 819 {
 820         spec_values[name] = value;
 821 }
 822
 823 void Program::SpecializationLoader::specialize_int(const string &name, int value)
 824 {
 825         spec_values[name] = value;
 826 }
 827
 828 } // namespace GL
 829 } // namespace Msp