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