source/programbuilder.cpp

   1 #include <algorithm>
   2 #include <cstring>
   3 #include <set>
   4 #include <msp/gl/extensions/arb_uniform_buffer_object.h>
   5 #include <msp/strings/format.h>
   6 #include <msp/strings/utils.h>
   7 #include "extension.h"
   8 #include "program.h"
   9 #include "programbuilder.h"
  10 #include "shader.h"
  11 #include "vertexformat.h"
  12
  13 using namespace std;
  14
  15 namespace Msp {
  16 namespace GL {
  17
  18 #pragma GCC diagnostic push
  19 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
  20
  21 /*
  22 Naming conventions:
  23   n_*        Normalized vector
  24   l_*        Lighting component
  25
  26   obj_*      Object space
  27   eye_*      Eye space
  28   tbn_*      Tangent-Binormal-Normal space
  29   shd_*      Shadow space
  30   env_*      Environment space
  31   *_dir      Direction vector
  32
  33   zzz_*      Wildcard space, resolved by the builder
  34              All wildcard spaces within an expression must match
  35
  36   xxx_yyy_*  Matrix that transforms between yyy to xxx
  37              The vector is on the side of its designated space, result will be
  38              in the other space
  39   *_matrix   A matrix (duh)
  40   *_rmatrix  A mat4 that works with a row vector
  41
  42   rgb_*      Color with rgb components only
  43   color_*    Color with rgba components
  44 */
  45
  46 /* The array is stored in reverse order, so that variables always come after
  47 anything that might need them. */
  48 const ProgramBuilder::VariableDefinition ProgramBuilder::standard_variables[] =
  49 {
  50         { FRAGMENT, "gl_FragColor", "vec4", "frag_color", 0 },
  51         { FRAGMENT, "frag_color", "vec4", "incoming_color", "!f" },
  52         { FRAGMENT, "frag_color", "vec4", "vec4(mix(fog_color.rgb, incoming_color.rgb, fog_value), incoming_color.a)", "f" },
  53         { FRAGMENT, "fog_value", "float", "exp(-fog_coord*fog_density)", 0 },
  54
  55         { FRAGMENT, "incoming_color", "vec4", "basic_color", "!e!l" },
  56         { FRAGMENT, "incoming_color", "vec4", "vec4(rgb_surface, surface_alpha)", "!el" },
  57         { FRAGMENT, "incoming_color", "vec4", "vec4(rgb_surface+rgb_reflection, surface_alpha)", "e" },
  58
  59         { FRAGMENT, "rgb_reflection", "vec3", "reflect_sample.rgb*reflectivity", 0 },
  60         { FRAGMENT, "reflect_sample", "vec4", "textureCube(environment, env_reflect_dir)", 0 },
  61         { FRAGMENT, "env_reflect_dir", "vec3", "env_eye_matrix*eye_reflect_dir", 0 },
  62         { FRAGMENT, "eye_reflect_dir", "vec3", "eye_tbn_matrix*tbn_reflect_dir", "n" },
  63
  64         { FRAGMENT, "rgb_surface", "vec3", "rgb_unlit_surface", "!l" },
  65         { FRAGMENT, "rgb_surface", "vec3", "rgb_lit_surface", "l" },
  66         { FRAGMENT, "rgb_unlit_surface", "vec3", "basic_color.rgb", "!s" },
  67         { FRAGMENT, "rgb_unlit_surface", "vec3", "basic_color.rgb*l_shadow", "s" },
  68         { FRAGMENT, "rgb_lit_surface", "vec3", "rgb_illumination_diffuse", "!m!t" },
  69         { FRAGMENT, "rgb_lit_surface", "vec3", "rgb_illumination_diffuse*diffuse_sample.rgb", "!mt" },
  70         { FRAGMENT, "rgb_lit_surface", "vec3", "rgb_surface_ambient+rgb_surface_diffuse", "m!p" },
  71         { FRAGMENT, "rgb_lit_surface", "vec3", "rgb_surface_ambient+rgb_surface_diffuse+rgb_surface_specular", "mp" },
  72
  73         { FRAGMENT, "surface_alpha", "float", "basic_color.a", "!m" },
  74         { FRAGMENT, "surface_alpha", "float", "basic_color.a", "m!l" },
  75         { FRAGMENT, "surface_alpha", "float", "material.diffuse.a", "ml!t" },
  76         { FRAGMENT, "surface_alpha", "float", "material.diffuse.a*diffuse_sample.a", "mlt" },
  77         { FRAGMENT, "basic_color", "vec4", "vec4(1.0)", "!m!t" },
  78         { FRAGMENT, "basic_color", "vec4", "diffuse_sample", "!mt" },
  79         { FRAGMENT, "basic_color", "vec4", "color", "m!t" },
  80         { FRAGMENT, "basic_color", "vec4", "color*diffuse_sample", "mt" },
  81
  82         { FRAGMENT, "rgb_surface_ambient", "vec3", "rgb_illumination_ambient*material.ambient.rgb", "!t" },
  83         { FRAGMENT, "rgb_surface_ambient", "vec3", "rgb_illumination_ambient*material.ambient.rgb*diffuse_sample.rgb", "t" },
  84         { FRAGMENT, "rgb_illumination_ambient", "vec3", "ambient_color.rgb", "!y" },
  85         { FRAGMENT, "rgb_illumination_ambient", "vec3", "ambient_color.rgb+l_skylight*sky_color.rgb", "y" },
  86         { FRAGMENT, "l_skylight", "float", "dot(n_zzz_normal, zzz_sky_dir)*0.5+0.5", 0 },
  87
  88         { FRAGMENT, "rgb_surface_specular", "vec3", "rgb_illumination_specular*material.specular.rgb", 0 },
  89         { FRAGMENT, "rgb_illumination_specular", "vec3", "rgb_illumination_specular_direct", "!y|e" },
  90         { FRAGMENT, "rgb_illumination_specular", "vec3", "rgb_illumination_specular_direct+l_sky_specular*sky_color.rgb", "y!e" },
  91         { FRAGMENT, "rgb_illumination_specular_direct", "vec3", "rgb_light_specular", "!s" },
  92         { FRAGMENT, "rgb_illumination_specular_direct", "vec3", "rgb_light_specular*l_shadow", "s" },
  93         { FRAGMENT, "rgb_light_specular[i]", "vec3", "l_specular[i]*light_sources[i].specular.rgb", 0 },
  94         { FRAGMENT, "l_sky_specular", "float", "pow((1.0-pow(clamp(dot(zzz_reflect_dir, zzz_sky_dir)-horizon_limit, -1.0, 0.0), 2.0)), material.shininess/2.0)", 0 },
  95         { FRAGMENT, "l_specular[i]", "float", "pow(max(dot(n_zzz_half_vec[i], n_zzz_normal), 0.0), material.shininess)", 0 },
  96
  97         { FRAGMENT, "rgb_surface_diffuse", "vec3", "rgb_illumination_diffuse*material.diffuse.rgb", "!t" },
  98         { FRAGMENT, "rgb_surface_diffuse", "vec3", "rgb_illumination_diffuse*material.diffuse.rgb*diffuse_sample.rgb", "t" },
  99         { FRAGMENT, "rgb_illumination_diffuse", "vec3", "rgb_light_diffuse", "!s" },
 100         { FRAGMENT, "rgb_illumination_diffuse", "vec3", "rgb_light_diffuse*l_shadow", "s" },
 101         { FRAGMENT, "rgb_light_diffuse[i]", "vec3", "l_diffuse[i]*light_sources[i].diffuse.rgb", 0 },
 102         { FRAGMENT, "l_diffuse[i]", "float", "max(dot(n_zzz_normal, n_zzz_light_dir[i]), 0.0)", 0 },
 103
 104         { FRAGMENT, "l_shadow", "float", "mix(1.0, shadow_sample, shadow_darkness)", 0 },
 105         { FRAGMENT, "shadow_sample", "float", "shadow2D(shadow, shd_vertex)", 0 },
 106
 107         { FRAGMENT, "zzz_reflect_dir", "vec3", "reflect(zzz_incident_dir, n_zzz_normal)", 0 },
 108         { FRAGMENT, "n_zzz_half_vec[i]", "vec3", "normalize(zzz_light_dir[i]-zzz_incident_dir)", 0 },
 109         { FRAGMENT, "n_zzz_light_dir[i]", "vec3", "normalize(zzz_light_dir[i])", 0 },
 110         { FRAGMENT, "n_tbn_normal", "vec3", "normal_sample*2.0-1.0", "n" },
 111         { FRAGMENT, "n_eye_normal", "vec3", "normalize(eye_normal)", "!n" },
 112         { FRAGMENT, "normal_sample", "vec3", "texture2D(normal_map, texture_coord).xyz", 0 },
 113         { FRAGMENT, "diffuse_sample", "vec4", "texture2D(diffuse_map, texture_coord)", 0 },
 114
 115         { VERTEX, "gl_Position", "vec4", "projection_matrix*eye_vertex", 0 },
 116         { VERTEX, "gl_ClipDistance[i]", "float", "dot(eye_vertex, clip_planes[i].equation)", "c" },
 117         { VERTEX, "fog_coord", "float", "-eye_vertex.z", 0 },
 118         { VERTEX, "shd_vertex", "vec3", "(shd_eye_matrix*eye_vertex).xyz", 0 },
 119         { VERTEX, "tbn_sky_dir", "vec3", "eye_sky_dir*eye_tbn_matrix", "n" },
 120         { VERTEX, "tbn_light_dir[i]", "vec3", "eye_light_dir[i]*eye_tbn_matrix", 0 },
 121         { VERTEX, "eye_light_dir[i]", "vec3", "normalize(eye_light_position[i].xyz-eye_vertex.xyz*eye_light_position[i].w)", 0 },
 122         { VERTEX, "eye_light_position[i]", "vec4", "light_sources[i].position", 0 },
 123         { VERTEX, "tbn_incident_dir", "vec3", "eye_incident_dir*eye_tbn_matrix", 0 },
 124         { VERTEX, "eye_incident_dir", "vec3", "normalize(eye_vertex.xyz)", 0 },
 125         { VERTEX, "eye_tbn_matrix", "mat3", "mat3(eye_tangent, eye_binormal, eye_normal)", 0 },
 126         { VERTEX, "eye_vertex", "vec4", "eye_obj_matrix*vertex", 0 },
 127         { VERTEX, "eye_normal", "vec3", "eye_obj_normal_matrix*normal", 0 },
 128         { VERTEX, "eye_tangent", "vec3", "eye_obj_normal_matrix*tangent", 0 },
 129         { VERTEX, "eye_binormal", "vec3", "eye_obj_normal_matrix*binormal", 0 },
 130         { VERTEX, "texture_coord", "vec2", "texcoord.xy", 0 },
 131
 132         { ATTRIBUTE, "vertex", "vec4", "gl_Vertex", 0 },
 133         { ATTRIBUTE, "texcoord", "vec4", "gl_MultiTexCoord0", 0 },
 134         { ATTRIBUTE, "color", "vec4", "gl_Color", 0 },
 135         { ATTRIBUTE, "normal", "vec3", "gl_Normal", 0 },
 136         { ATTRIBUTE, "tangent", "vec3", 0, 0 },
 137         { ATTRIBUTE, "binormal", "vec3", 0, 0 },
 138
 139         { UNIFORM, "diffuse_map", "sampler2D", 0, 0 },
 140         { UNIFORM, "shadow", "sampler2DShadow", 0, 0 },
 141         { UNIFORM, "ShadowMap::shadow_darkness", "float", 0, 0 },
 142         { UNIFORM, "normal_map", "sampler2D", 0, 0 },
 143         { UNIFORM, "environment", "samplerCube", 0, 0 },
 144         { UNIFORM, "EnvMap::env_eye_matrix", "mat3", 0, 0 },
 145         { UNIFORM, "Material::reflectivity", "float", 0, 0 },
 146         { UNIFORM, "eye_obj_matrix", "mat4", "gl_ModelViewMatrix", 0 },
 147         { UNIFORM, "eye_obj_normal_matrix", "mat3", "gl_NormalMatrix", 0 },
 148         { UNIFORM, "Transform::projection_matrix", "mat4", "gl_ProjectionMatrix", 0 },
 149         { UNIFORM, "ShadowMap::shd_eye_matrix", "mat4", 0, 0 },
 150         { UNIFORM, "Lighting::light_sources", "LightSourceParameters[MAX_LIGHTS]", "gl_LightSource[i]", 0 },
 151         { UNIFORM, "Lighting::ambient_color", "vec4", "gl_LightModel.ambient", 0 },
 152         { UNIFORM, "Lighting::sky_color", "vec4", 0, 0 },
 153         { UNIFORM, "Lighting::eye_sky_dir", "vec3", 0, 0 },
 154         { UNIFORM, "Lighting::horizon_limit", "float", 0, 0 },
 155         { UNIFORM, "Lighting::fog_color", "vec4", "gl_Fog.color", 0 },
 156         { UNIFORM, "Lighting::fog_density", "float", "gl_Fog.density", 0 },
 157         { UNIFORM, "Material::material", "MaterialParameters", "gl_FrontMaterial", 0 },
 158         { UNIFORM, "Clipping::clip_planes", "ClipPlane[MAX_CLIP_PLANES]", 0, 0 },
 159
 160         { TYPE, "LightSourceParameters", "struct { vec4 position; vec4 diffuse; vec4 specular; }", "gl_LightSourceParameters", 0 },
 161         { TYPE, "MaterialParameters", "struct { vec4 ambient; vec4 diffuse; vec4 specular; float shininess; }", "gl_MaterialParameters", 0 },
 162         { TYPE, "ClipPlane", "struct { vec4 equation; }", 0, 0 },
 163
 164         // Terminator entry
 165         { NO_SCOPE, 0, 0, 0, 0 }
 166 };
 167
 168 const char ProgramBuilder::interfaces[] = { 0, 0, 0, 0, 0, 'v', 'g', 0 };
 169
 170 ProgramBuilder::ProgramBuilder(const StandardFeatures &f):
 171         features(f),
 172         feature_flags(features.create_flags()),
 173         enabled_scopes((1<<N_SCOPES)-1),
 174         optimize(true)
 175 {
 176         if(!features.custom.empty())
 177         {
 178                 const char *whitespace = " \t\n";
 179                 string::size_type start = 0;
 180                 while(1)
 181                 {
 182                         start = features.custom.find_first_not_of(whitespace, start);
 183                         if(start==string::npos)
 184                                 break;
 185
 186                         string::size_type semicolon = features.custom.find(';', start);
 187                         if(semicolon==start)
 188                         {
 189                                 ++start;
 190                                 continue;
 191                         }
 192                         else if(semicolon==string::npos)
 193                                 throw invalid_variable_definition(features.custom.substr(start));
 194
 195                         string::size_type equals = features.custom.find('=', start);
 196                         if(equals>semicolon)
 197                                 equals = string::npos;
 198
 199                         VariableDefinition var;
 200                         string::size_type decl_end = min(equals, semicolon);
 201                         for(unsigned i=0;; ++i)
 202                         {
 203                                 string::size_type word_end = features.custom.find_first_of(whitespace, start);
 204                                 word_end = min(word_end, decl_end);
 205                                 features.custom[word_end] = 0;
 206
 207                                 const char *word = &features.custom[start];
 208                                 if(i==0)
 209                                 {
 210                                         if(!strcmp(word, "uniform"))
 211                                                 var.scope = UNIFORM;
 212                                         else if(!strcmp(word, "attribute"))
 213                                                 var.scope = ATTRIBUTE;
 214                                         else if(!strcmp(word, "vertex"))
 215                                                 var.scope = VERTEX;
 216                                         else if(!strcmp(word, "fragment"))
 217                                                 var.scope = FRAGMENT;
 218                                         else if(!strcmp(word, "function"))
 219                                                 var.scope = FUNCTION;
 220                                         else
 221                                                 throw invalid_variable_definition(word);
 222                                 }
 223                                 else if(i==1)
 224                                         var.type = word;
 225                                 else if(i==2)
 226                                         var.name = word;
 227
 228                                 start = features.custom.find_first_not_of(whitespace, word_end+1);
 229                                 if(start>=decl_end || (var.scope==FUNCTION && features.custom[start]=='('))
 230                                         break;
 231                         }
 232
 233                         if(equals!=string::npos)
 234                         {
 235                                 if(var.scope==FUNCTION)
 236                                         throw invalid_variable_definition("function with expression");
 237                                 start = features.custom.find_first_not_of(whitespace, equals+1);
 238                                 if(start>=semicolon)
 239                                         throw invalid_variable_definition("no expression");
 240                                 features.custom[semicolon] = 0;
 241                                 var.expression = &features.custom[start];
 242                         }
 243                         else if(var.scope==FUNCTION)
 244                         {
 245                                 string::size_type left_paren = features.custom.find('(', start);
 246                                 string::size_type right_paren = features.custom.find(')', start);
 247                                 if(left_paren>semicolon || right_paren>semicolon)
 248                                         throw invalid_variable_definition("no argument list");
 249                                 features.custom[right_paren] = 0;
 250                                 var.expression = &features.custom[left_paren+1];
 251                         }
 252                         else
 253                                 var.expression = 0;
 254
 255                         var.flags = 0;
 256                         for(const VariableDefinition *j=standard_variables; j->name; ++j)
 257                                 if(!strcmp(var.name, j->name))
 258                                         var.flags = "o";
 259
 260                         custom_variables.push_front(var);
 261
 262                         start = semicolon+1;
 263                 }
 264         }
 265
 266         if(!features.geometry)
 267                 enabled_scopes &= ~(1<<GEOMETRY);
 268
 269         if(!features.legacy)
 270         {
 271                 aliases["texture1D"] = "texture";
 272                 aliases["texture2D"] = "texture";
 273                 aliases["texture3D"] = "texture";
 274                 aliases["textureCube"] = "texture";
 275                 aliases["shadow2D"] = "texture";
 276         }
 277         else
 278                 aliases["shadow2D"] = "shadow2D(...).r";
 279 }
 280
 281 void ProgramBuilder::set_optimize(bool o)
 282 {
 283         optimize = o;
 284 }
 285
 286 Program *ProgramBuilder::create_program() const
 287 {
 288         Program *prog = new Program;
 289         add_shaders(*prog);
 290         return prog;
 291 }
 292
 293 void ProgramBuilder::add_shaders(Program &prog) const
 294 {
 295         list<ShaderVariable> variables;
 296         list<ShaderVariable *> resolved_vars;
 297
 298         if(features.clipping)
 299                 variables.push_back(ShaderVariable("gl_ClipDistance[i]"));
 300         variables.push_front(ShaderVariable("gl_Position"));
 301         variables.push_front(ShaderVariable(features.legacy ? "gl_FragColor" : "frag_color"));
 302
 303         list<VariableDefinition>::const_iterator next_custom = custom_variables.begin();
 304         for(const VariableDefinition *i=standard_variables; i->name; )
 305         {
 306                 const VariableDefinition *def = 0;
 307                 if(next_custom!=custom_variables.end() && (!strcmp(next_custom->name, i->name) || !next_custom->flags))
 308                 {
 309                         def = &*next_custom;
 310                         ++next_custom;
 311                 }
 312                 else
 313                 {
 314                         def = i;
 315                         ++i;
 316
 317                         // Skip over anything that isn't used with the supplied flags
 318                         if(def->flags && !evaluate_flags(def->flags))
 319                                 continue;
 320                 }
 321
 322                 if(def->scope==TYPE)
 323                 {
 324                         for(list<ShaderVariable *>::iterator j=resolved_vars.begin(); j!=resolved_vars.end(); ++j)
 325                                 if(!(*j)->type && name_match(def->name, (*j)->variable->type))
 326                                         (*j)->resolve_type(*def);
 327
 328                         continue;
 329                 }
 330
 331                 const char *def_uq_name = unqualified_name(def->name);
 332
 333                 // See if this variable can satisfy any unresolved variables
 334                 ShaderVariable *last_resolved = 0;
 335                 for(list<ShaderVariable>::iterator j=variables.begin(); j!=variables.end(); ++j)
 336                 {
 337                         if(j->variable)
 338                                 continue;
 339
 340                         if(!name_match(def_uq_name, j->resolved_name.c_str()))
 341                                 continue;
 342
 343                         if(last_resolved)
 344                         {
 345                                 /* We've already resolved a non-fuzzy variable in this iteration.
 346                                 If there are multiple variables that can be resolved, they refer
 347                                 to the same variable. */
 348                                 j->resolve(*last_resolved);
 349                                 continue;
 350                         }
 351
 352                         j->resolve(*def);
 353                         resolved_vars.push_front(&*j);
 354                         if(!j->fuzzy_space)
 355                                 last_resolved = &*j;
 356
 357                         if(!def->expression)
 358                                 continue;
 359
 360                         vector<string> identifiers = extract_identifiers(def->expression);
 361                         for(vector<string>::const_iterator k=identifiers.begin(); k!=identifiers.end(); ++k)
 362                         {
 363                                 // Use an existing variable if possible, but only if it's not fuzzy
 364                                 ShaderVariable *var = 0;
 365                                 for(list<ShaderVariable>::iterator l=variables.begin(); (!var && l!=variables.end()); ++l)
 366                                         if(!l->fuzzy_space && l->resolved_name==*k)
 367                                                 var = &*l;
 368
 369                                 if(!var)
 370                                 {
 371                                         variables.push_back(ShaderVariable(*k));
 372                                         var = &variables.back();
 373                                 }
 374                                 j->add_reference(*var);
 375                         }
 376                 }
 377         }
 378
 379         // Array sizes need to be resolved for inline processing
 380         for(list<ShaderVariable>::iterator i=variables.end(); i!=variables.begin(); )
 381                 (--i)->resolve_array(features);
 382
 383         bool legacy_variables = evaluate_flags("g");
 384         for(list<ShaderVariable *>::const_iterator i=resolved_vars.begin(); i!=resolved_vars.end(); ++i)
 385                 (*i)->check_inline(legacy_variables, !optimize);
 386
 387         prog.attach_shader_owned(new VertexShader(create_source(resolved_vars, VERTEX)));
 388         prog.attach_shader_owned(new FragmentShader(create_source(resolved_vars, FRAGMENT)));
 389
 390         if(!features.legacy)
 391         {
 392                 // OpenGL ES does not support binding fragment shader outputs
 393                 if(get_gl_api()!=OPENGL_ES2)
 394                         prog.bind_fragment_data(0, "frag_color");
 395
 396                 prog.bind_attribute(VERTEX4, "vertex");
 397                 if(features.lighting)
 398                         prog.bind_attribute(NORMAL3, "normal");
 399                 else if(features.material)
 400                         prog.bind_attribute(COLOR4_FLOAT, "color");
 401                 if(features.texture || features.normal_map)
 402                         prog.bind_attribute(TEXCOORD4, "texcoord");
 403         }
 404         if(features.normal_map)
 405         {
 406                 prog.bind_attribute(get_component_type(TANGENT3), "tangent");
 407                 prog.bind_attribute(get_component_type(BINORMAL3), "binormal");
 408         }
 409 }
 410
 411 string ProgramBuilder::create_source(const list<ShaderVariable *> &variables, VariableScope scope) const
 412 {
 413         string source;
 414
 415         bool use_blocks = !features.legacy && ARB_uniform_buffer_object;
 416
 417         if(!features.legacy)
 418         {
 419                 if(get_gl_api()==OPENGL_ES2)
 420                 {
 421                         if(use_blocks)
 422                                 source += "#version 300 es\n";
 423                 }
 424                 else
 425                 {
 426                         source += "#version 130\n";
 427                         if(use_blocks)
 428                                 source += "#extension GL_ARB_uniform_buffer_object: require\n";
 429                 }
 430         }
 431
 432         if(get_gl_api()==OPENGL_ES2)
 433                 source += "precision mediump float;\n";
 434
 435         set<const VariableDefinition *> declared_types;
 436         set<string> uniform_blocks;
 437         for(list<ShaderVariable *>::const_iterator i=variables.begin(); i!=variables.end(); ++i)
 438         {
 439                 if(!(*i)->is_referenced_from(scope))
 440                         continue;
 441
 442                 if((*i)->variable->scope==FUNCTION)
 443                         source += format("%s;\n", (*i)->create_declaration());
 444                 else if((*i)->variable->scope==UNIFORM && !(*i)->inlined)
 445                 {
 446                         if((*i)->type && !declared_types.count((*i)->type))
 447                         {
 448                                 source += format("%s;\n", (*i)->create_type_declaration());
 449                                 declared_types.insert((*i)->type);
 450                         }
 451
 452                         if(!(*i)->resolved_block.empty() && use_blocks)
 453                                 uniform_blocks.insert((*i)->resolved_block);
 454                         else
 455                                 source += format("uniform %s;\n", (*i)->create_declaration());
 456                 }
 457         }
 458
 459         for(set<string>::const_iterator i=uniform_blocks.begin(); i!=uniform_blocks.end(); ++i)
 460         {
 461                 source += format("uniform %s\n{\n", *i);
 462                 for(list<ShaderVariable *>::const_iterator j=variables.begin(); j!=variables.end(); ++j)
 463                         if((*j)->resolved_block==*i)
 464                                 source += format("\t%s;\n", (*j)->create_declaration());
 465                 source += "};\n";
 466         }
 467
 468         /* Interface variables need to have global declarations. */
 469         for(list<ShaderVariable *>::const_iterator i=variables.begin(); i!=variables.end(); ++i)
 470         {
 471                 if(!(*i)->resolved_name.compare(0, 3, "gl_"))
 472                         continue;
 473
 474                 InterfaceFlags iface = (*i)->get_interface_flags(scope);
 475
 476                 if(iface&INPUT)
 477                 {
 478                         const char *qualifier = (features.legacy ? scope==VERTEX ? "attribute" : "varying" : "in");
 479                         source += format("%s %s;\n", qualifier, (*i)->create_declaration(interfaces[previous_scope(scope, enabled_scopes)]));
 480                 }
 481
 482                 if(iface&OUTPUT)
 483                 {
 484                         const char *qualifier = (features.legacy ? "varying" : "out");
 485                         source += format("%s %s;\n", qualifier, (*i)->create_declaration(interfaces[scope]));
 486                 }
 487         }
 488
 489         // The clip distance array must be declared manually to give it a size
 490         if(scope==VERTEX && features.clipping)
 491                 source += format("out float gl_ClipDistance[%d];\n", features.max_clip_planes);
 492
 493         source += "void main()\n{\n";
 494
 495         list<ShaderVariable *> loop_vars;
 496         unsigned loop_size = 0;
 497         for(list<ShaderVariable *>::const_iterator i=variables.begin(); i!=variables.end(); ++i)
 498         {
 499                 if(!loop_vars.empty() && !loop_vars.back()->in_loop && (*i)->array_size!=loop_size)
 500                 {
 501                         /* Declare all variables that need to be visible outside the loop.
 502                         Output variables are already declared. */
 503                         for(list<ShaderVariable *>::const_iterator j=loop_vars.begin(); j!=loop_vars.end(); ++j)
 504                         {
 505                                 InterfaceFlags iface = (*j)->get_interface_flags(scope);
 506                                 if(!(*j)->in_loop && !(iface&OUTPUT))
 507                                         source += format("\t%s;\n", (*j)->create_declaration());
 508                         }
 509
 510                         source += format("\tfor(int i=0; i<%d; ++i)\n\t{\n", loop_size);
 511                         for(list<ShaderVariable *>::const_iterator j=loop_vars.begin(); j!=loop_vars.end(); ++j)
 512                         {
 513                                 if((*j)->variable->scope==scope && !(*j)->inlined)
 514                                 {
 515                                         string decl;
 516                                         if((*j)->in_loop)
 517                                                 decl = (*j)->create_declaration(0, true);
 518                                         else
 519                                         {
 520                                                 decl = (*j)->resolved_name;
 521                                                 if(!(*j)->array_sum)
 522                                                         decl += "[i]";
 523                                         }
 524                                         const char *oper = ((*j)->array_sum ? "+=" : "=");
 525                                         source += format("\t\t%s %s %s;\n", decl, oper, create_expression(**j, "i"));
 526                                 }
 527
 528                                 InterfaceFlags iface = (*j)->get_interface_flags(scope);
 529                                 if((iface&(OUTPUT|GOAL))==OUTPUT)
 530                                 {
 531                                         string expr = ((*j)->inlined ? create_expression(**j, "i") : (*j)->resolved_name+"[i]");
 532                                         source += format("\t\t%c_%s[i] = %s;\n", interfaces[scope], (*j)->resolved_name, expr);
 533                                 }
 534                         }
 535                         source += "\t}\n";
 536
 537                         loop_vars.clear();
 538                 }
 539
 540                 InterfaceFlags iface = (*i)->get_interface_flags(scope);
 541
 542                 if((*i)->array_size>1 || ((*i)->array_size==1 && (iface&GOAL)))
 543                 {
 544                         if((*i)->variable->scope==scope || (iface&OUTPUT))
 545                         {
 546                                 loop_size = (*i)->array_size;
 547                                 loop_vars.push_back(*i);
 548                         }
 549                         continue;
 550                 }
 551
 552                 if((*i)->variable->scope==scope && !(*i)->inlined)
 553                 {
 554                         string decl = ((iface&GOAL) ? (*i)->resolved_name : (*i)->create_declaration());
 555                         source += format("\t%s = %s;\n", decl, create_expression(**i));
 556                 }
 557
 558                 if((iface&(OUTPUT|GOAL))==OUTPUT)
 559                 {
 560                         string expr = ((*i)->inlined ? create_expression(**i) : (*i)->resolved_name);
 561                         source += format("\t%c_%s = %s;\n", interfaces[scope], (*i)->resolved_name, expr);
 562                 }
 563         }
 564
 565         source += '}';
 566
 567         return source;
 568 }
 569
 570 bool ProgramBuilder::evaluate_flags(const char *flags) const
 571 {
 572         if(!flags)
 573                 return true;
 574
 575         bool cond = true;
 576         char oper = '&';
 577         for(const char *i=flags; *i; ++i)
 578         {
 579                 if(*i>='a' && *i<='z')
 580                 {
 581                         bool found = (feature_flags.find(*i)!=string::npos);
 582                         if(oper=='|')
 583                                 cond = (cond || found);
 584                         else if(oper=='!')
 585                                 cond = (cond && !found);
 586                         else if(oper=='&')
 587                                 cond = (cond && found);
 588                         oper = '&';
 589                 }
 590                 else
 591                         oper = *i;
 592         }
 593
 594         return cond;
 595 }
 596
 597 const char *ProgramBuilder::unqualified_name(const char *name)
 598 {
 599         for(const char *p=name; *p; ++p)
 600                 if(*p==':' && *++p==':')
 601                         name = p+1;
 602         return name;
 603 }
 604
 605 ProgramBuilder::MatchType ProgramBuilder::name_match(const char *n1, const char *n2, const char **space)
 606 {
 607         int i = 0;
 608         int zzz = -1;
 609         int zside = 0;
 610         while(*n1 && *n2)
 611         {
 612                 if(*n1==*n2 || *n1=='z' || *n2=='z')
 613                 {
 614                         if(*n1!=*n2)
 615                         {
 616                                 int side = (*n1=='z' ? 1 : 2);
 617                                 if(zzz<0)
 618                                 {
 619                                         zzz = i;
 620                                         zside = side;
 621                                         if(space)
 622                                         {
 623                                                 if(*n1=='z')
 624                                                         *space = n2;
 625                                                 else
 626                                                         *space = n1;
 627                                         }
 628                                 }
 629                                 else if(i>=zzz+3 || side!=zside)
 630                                         return NO_MATCH;
 631                         }
 632                 }
 633                 else
 634                         return NO_MATCH;
 635                 ++n1;
 636                 ++n2;
 637                 ++i;
 638         }
 639         return (!*n1 && !*n2) ? (zzz>=0 ? FUZZY : EXACT) : ((*n1=='[' || *n2=='[') ? ARRAY : NO_MATCH);
 640 }
 641
 642 bool ProgramBuilder::parse_identifier(const char *ptr, unsigned &start, unsigned &length)
 643 {
 644         bool found = false;
 645         bool member = false;
 646         bool subscript = false;
 647         for(const char *i=ptr;; ++i)
 648         {
 649                 if(!found)
 650                 {
 651                         if(!*i)
 652                                 return false;
 653                         if(isalpha(*i) || *i=='_')
 654                         {
 655                                 if(!member)
 656                                 {
 657                                         start = i-ptr;
 658                                         found = true;
 659                                 }
 660                         }
 661                         else if(*i=='.')
 662                                 member = true;
 663                         else
 664                                 member = false;
 665                 }
 666                 else
 667                 {
 668                         if(subscript)
 669                         {
 670                                 if(*i==']')
 671                                 {
 672                                         length = i+1-(ptr+start);
 673                                         return true;
 674                                 }
 675                                 else if(!isalpha(*i) || i>ptr+start+length+1)
 676                                         return true;
 677                         }
 678                         else if(!isalnum(*i) && *i!='_')
 679                         {
 680                                 length = i-(ptr+start);
 681                                 if(*i=='[')
 682                                         subscript = true;
 683                                 else
 684                                         return true;
 685                         }
 686                 }
 687         }
 688 }
 689
 690 vector<string> ProgramBuilder::extract_identifiers(const char *expression)
 691 {
 692         vector<string> result;
 693         const char *ptr = expression;
 694         unsigned start = 0;
 695         unsigned length = 0;
 696         while(parse_identifier(ptr, start, length))
 697         {
 698                 result.push_back(string(ptr+start, length));
 699                 ptr += start+length;
 700         }
 701         return result;
 702 }
 703
 704 string ProgramBuilder::replace_identifiers(const char *expression, const map<string, string> &replace_map, bool with_functions)
 705 {
 706         string result;
 707         const char *ptr = expression;
 708         unsigned start = 0;
 709         unsigned length = 0;
 710         while(parse_identifier(ptr, start, length))
 711         {
 712                 result.append(ptr, start);
 713                 string identifier(ptr+start, length);
 714                 map<string, string>::const_iterator i = replace_map.find(identifier);
 715                 if(i!=replace_map.end())
 716                 {
 717                         if(with_functions && ptr[start+length]=='(')
 718                         {
 719                                 string::size_type lparen = i->second.find('(');
 720                                 string::size_type rparen = i->second.rfind(')');
 721                                 if(lparen!=string::npos && rparen!=string::npos)
 722                                 {
 723                                         unsigned level = 1;
 724                                         unsigned j;
 725                                         for(j=start+length+1; (ptr[j] && level); ++j)
 726                                         {
 727                                                 level += (ptr[j]=='(');
 728                                                 level -= (ptr[j]==')');
 729                                         }
 730
 731                                         if(!level)
 732                                         {
 733                                                 string subexpr(ptr+start+length, ptr+j);
 734                                                 result += i->second.substr(0, lparen);
 735                                                 result += replace_identifiers(subexpr.c_str(), replace_map, with_functions);
 736                                                 result += i->second.substr(rparen+1);
 737                                                 ptr += j;
 738                                                 continue;
 739                                         }
 740                                 }
 741                         }
 742
 743                         result += i->second;
 744                 }
 745                 else
 746                         result += identifier;
 747                 ptr += start+length;
 748         }
 749         result += ptr;
 750         return result;
 751 }
 752
 753 ProgramBuilder::VariableScope ProgramBuilder::previous_scope(VariableScope scope, unsigned enabled_scopes)
 754 {
 755         while(scope!=NO_SCOPE)
 756         {
 757                 scope = static_cast<VariableScope>(scope-1);
 758                 if(enabled_scopes&(1<<scope))
 759                         break;
 760         }
 761
 762         return scope;
 763 }
 764
 765 string ProgramBuilder::create_expression(const ShaderVariable &var, const char *loop) const
 766 {
 767         string expr = var.create_expression(enabled_scopes, loop);
 768         return replace_identifiers(expr.c_str(), aliases, true);
 769 }
 770
 771
 772 ProgramBuilder::StandardFeatures::StandardFeatures():
 773         texture(false),
 774         material(false),
 775         lighting(false),
 776         max_lights(1),
 777         skylight(false),
 778         fog(false),
 779         specular(false),
 780         normal_map(false),
 781         shadow(false),
 782         reflection(false),
 783         clipping(false),
 784         max_clip_planes(1),
 785         geometry(false)
 786 {
 787         if(get_gl_api()==OPENGL_ES2)
 788                 legacy = get_glsl_version()<Version(3, 0);
 789         else
 790                 legacy = get_glsl_version()<Version(1, 30);
 791 }
 792
 793 string ProgramBuilder::StandardFeatures::create_flags() const
 794 {
 795         string flags;
 796         if(texture)
 797                 flags += 't';
 798         if(material)
 799                 flags += 'm';
 800         if(lighting)
 801         {
 802                 flags += 'l';
 803                 if(skylight)
 804                         flags += 'y';
 805                 if(specular)
 806                         flags += 'p';
 807                 if(normal_map)
 808                         flags += 'n';
 809         }
 810         if(fog)
 811                 flags += 'f';
 812         if(shadow)
 813                 flags += 's';
 814         if(reflection)
 815                 flags += 'e';
 816         if(clipping)
 817                 flags += 'c';
 818         if(legacy && get_gl_api()==OPENGL)
 819                 flags += 'g';
 820
 821         return flags;
 822 }
 823
 824
 825 ProgramBuilder::ShaderVariable::ShaderVariable(const std::string &n):
 826         name(n),
 827         variable(0),
 828         type(0),
 829         resolved_name(n),
 830         fuzzy_space(name.find("zzz")!=string::npos),
 831         array_sum(false),
 832         array_size(0),
 833         inlined(false),
 834         inline_parens(false),
 835         in_loop(false)
 836 {
 837         string::size_type bracket = name.find('[');
 838         if(bracket!=string::npos)
 839                 array_subscript = name.substr(bracket+1, name.size()-bracket-2);
 840 }
 841
 842 void ProgramBuilder::ShaderVariable::resolve(const VariableDefinition &var)
 843 {
 844         variable = &var;
 845         const char *space = 0;
 846         const char *var_uq_name = unqualified_name(variable->name);
 847         MatchType match = name_match(var_uq_name, resolved_name.c_str(), &space);
 848
 849         if(var_uq_name!=variable->name)
 850                 resolved_block.assign(variable->name, var_uq_name-2);
 851
 852         if(match==FUZZY)
 853                 resolve_space(string(space, 3));
 854         else if(match==ARRAY)
 855         {
 856                 if(array_subscript.empty())
 857                         array_sum = true;
 858                 else if(var.scope==UNIFORM)
 859                 {
 860                         const char *bracket = strrchr(variable->type, '[');
 861                         if(bracket)
 862                                 array_subscript = string(bracket+1, strlen(bracket)-2);
 863                 }
 864         }
 865 }
 866
 867 void ProgramBuilder::ShaderVariable::resolve(ShaderVariable &var)
 868 {
 869         for(list<ShaderVariable *>::iterator i=referenced_by.begin(); i!=referenced_by.end(); ++i)
 870                 (*i)->update_reference(*this, var);
 871         var.referenced_by.insert(var.referenced_by.end(), referenced_by.begin(), referenced_by.end());
 872 }
 873
 874 void ProgramBuilder::ShaderVariable::resolve_type(const VariableDefinition &var)
 875 {
 876         type = &var;
 877 }
 878
 879 void ProgramBuilder::ShaderVariable::resolve_space(const string &space)
 880 {
 881         if(fuzzy_space)
 882         {
 883                 resolved_space = space;
 884
 885                 string::size_type zzz = resolved_name.find("zzz");
 886                 resolved_name.replace(zzz, 3, resolved_space);
 887                 fuzzy_space = false;
 888
 889                 // Resolving the space could have affected other variables that use this one
 890                 for(list<ShaderVariable *>::iterator i=referenced_by.begin(); i!=referenced_by.end(); ++i)
 891                         (*i)->resolve_space(space);
 892         }
 893
 894         for(list<ShaderVariable *>::iterator i=referenced_vars.begin(); i!=referenced_vars.end(); ++i)
 895                 if((*i)->fuzzy_space)
 896                         (*i)->resolve_space(space);
 897 }
 898
 899 void ProgramBuilder::ShaderVariable::resolve_array(const StandardFeatures &feat, unsigned size_hint)
 900 {
 901         if(array_size)
 902                 return;
 903         if(!array_sum && array_subscript.empty())
 904                 return;
 905
 906         if(!array_subscript.empty())
 907         {
 908                 string::size_type bracket = resolved_name.find('[');
 909                 if(bracket!=string::npos)
 910                         resolved_name = resolved_name.substr(0, bracket);
 911         }
 912
 913         if(variable && variable->scope==UNIFORM)
 914         {
 915                 if(array_subscript=="MAX_LIGHTS")
 916                         array_size = feat.max_lights;
 917                 else if(array_subscript=="MAX_CLIP_PLANES")
 918                         array_size = feat.max_clip_planes;
 919                 else if(isnumrc(array_subscript))
 920                         array_size = lexical_cast<unsigned>(array_subscript);
 921                 else
 922                         throw invalid_variable_definition("invalid array size");
 923         }
 924
 925         if(!array_size)
 926         {
 927                 for(list<ShaderVariable *>::const_iterator i=referenced_vars.begin(); i!=referenced_vars.end(); ++i)
 928                         if((*i)->array_size)
 929                         {
 930                                 array_size = (*i)->array_size;
 931                                 break;
 932                         }
 933         }
 934
 935         if(!array_size && size_hint)
 936                 array_size = size_hint;
 937
 938         if(array_size)
 939         {
 940                 for(list<ShaderVariable *>::const_iterator i=referenced_vars.begin(); i!=referenced_vars.end(); ++i)
 941                         if(!(*i)->array_subscript.empty() && !(*i)->array_size)
 942                                 (*i)->resolve_array(feat, array_size);
 943         }
 944 }
 945
 946 void ProgramBuilder::ShaderVariable::add_reference(ShaderVariable &var)
 947 {
 948         referenced_vars.push_back(&var);
 949         var.referenced_by.push_back(this);
 950         if(var.fuzzy_space && !resolved_space.empty())
 951                 var.resolve_space(resolved_space);
 952 }
 953
 954 void ProgramBuilder::ShaderVariable::update_reference(ShaderVariable &from, ShaderVariable &to)
 955 {
 956         replace(referenced_vars.begin(), referenced_vars.end(), &from, &to);
 957         replace(referenced_by.begin(), referenced_by.end(), &from, &to);
 958         if(from.fuzzy_space && !to.fuzzy_space && !to.resolved_space.empty())
 959                 resolve_space(to.resolved_space);
 960 }
 961
 962 void ProgramBuilder::ShaderVariable::check_inline(bool allow_legacy, bool trivial_only)
 963 {
 964         if(variable->expression && variable->scope>=UNIFORM)
 965         {
 966                 if(array_sum && array_size>1)
 967                         return;
 968                 if(!allow_legacy && !strncmp(variable->expression, "gl_", 3))
 969                         return;
 970
 971                 // Never inline goal variables
 972                 if(referenced_by.empty())
 973                         return;
 974
 975                 // Inline an expression consisting of a single identifier
 976                 unsigned start, length;
 977                 if(parse_identifier(variable->expression, start, length))
 978                         if(start==0 && variable->expression[length]==0)
 979                         {
 980                                 inlined = true;
 981                                 return;
 982                         }
 983
 984                 if(trivial_only)
 985                         return;
 986
 987                 /* If all references to the variable come from arrays in the same scope
 988                 and of the same size, the variable can be embedded in the loop. */
 989                 in_loop = (array_size>1 && !array_sum);
 990                 for(list<ShaderVariable *>::const_iterator i=referenced_by.begin(); i!=referenced_by.end(); ++i)
 991                         if((*i)->variable->scope!=variable->scope || (*i)->array_size!=array_size)
 992                                 in_loop = false;
 993
 994                 /* Count all refs to this variable.  Refs from array variables count once
 995                 per loop iteration. */
 996                 unsigned total_refs = 0;
 997                 unsigned in_scope_refs = 0;
 998                 for(list<ShaderVariable *>::const_iterator i=referenced_by.begin(); i!=referenced_by.end(); ++i)
 999                 {
1000                         unsigned count = max((*i)->array_size*!in_loop, 1U);
1001                         total_refs += count;
1002                         if((*i)->variable->scope==variable->scope)
1003                                 in_scope_refs += count;
1004                 }
1005
1006                 /* Inline if there's only one ref, or if all refs are in other scopes.
1007                 In the latter case, the actual inlining will happen in the interface
1008                 variable assignment. */
1009                 if(total_refs==1 || in_scope_refs==0)
1010                 {
1011                         inlined = true;
1012                         unsigned level = 0;
1013                         for(const char *c=variable->expression; (!inline_parens && *c); ++c)
1014                         {
1015                                 if(*c=='(')
1016                                         ++level;
1017                                 else if(*c==')')
1018                                         --level;
1019                                 else if(level==0 && !isalnum(*c) && *c!='_' && *c!='.')
1020                                         inline_parens = true;
1021                         }
1022                 }
1023         }
1024 }
1025
1026 bool ProgramBuilder::ShaderVariable::is_referenced_from(VariableScope scope) const
1027 {
1028         for(list<ShaderVariable *>::const_iterator i=referenced_by.begin(); i!=referenced_by.end(); ++i)
1029                 if((*i)->variable->scope==scope)
1030                         return true;
1031         return false;
1032 }
1033
1034 ProgramBuilder::InterfaceFlags ProgramBuilder::ShaderVariable::get_interface_flags(VariableScope scope) const
1035 {
1036         /* Uniforms are available to all stages and are not passed through
1037         interfaces */
1038         if(variable->scope<=UNIFORM)
1039                 return NO_INTERFACE;
1040
1041         int flags = NO_INTERFACE;
1042
1043         for(list<ShaderVariable *>::const_iterator i=referenced_by.begin(); i!=referenced_by.end(); ++i)
1044         {
1045                 /* Variables used in a later scope than they are declared in need to go
1046                 through the interface */
1047                 if((*i)->variable->scope>scope && variable->scope<=scope)
1048                         flags |= OUTPUT;
1049                 if((*i)->variable->scope>=scope && variable->scope<scope)
1050                         if(!inlined || variable->scope!=ATTRIBUTE || scope!=VERTEX)
1051                                 flags |= INPUT;
1052         }
1053
1054         // Variables without any references are goals and also outputs.
1055         if(referenced_by.empty() && variable->scope==scope)
1056                 flags |= OUTPUT|GOAL;
1057
1058         return static_cast<InterfaceFlags>(flags);
1059 }
1060
1061 string ProgramBuilder::ShaderVariable::create_type_declaration() const
1062 {
1063         if(!type)
1064                 throw logic_error("no type");
1065
1066         if(!strncmp(type->type, "struct", 6))
1067         {
1068                 const char *brace = strchr(type->type, '{');
1069                 if(brace)
1070                         return format("struct %s %s", type->name, brace);
1071         }
1072
1073         throw invalid_variable_definition("invalid typedef");
1074 }
1075
1076 string ProgramBuilder::ShaderVariable::create_declaration(char iface, bool loop) const
1077 {
1078         if(variable->scope==FUNCTION)
1079                 return format("%s %s(%s)", variable->type, resolved_name, variable->expression);
1080
1081         if(variable->scope==UNIFORM && !array_subscript.empty())
1082         {
1083                 const char *bracket = strrchr(variable->type, '[');
1084                 if(bracket)
1085                         return format("%s %s[%d]", string(variable->type, bracket), resolved_name, array_size);
1086         }
1087
1088         string array;
1089         if(!array_sum && array_size>1 && !loop)
1090                 array = format("[%d]", array_size);
1091
1092         if(iface)
1093                 return format("%s %c_%s%s", variable->type, iface, resolved_name, array);
1094         else
1095                 return format("%s %s%s", variable->type, resolved_name, array);
1096 }
1097
1098 string ProgramBuilder::ShaderVariable::create_replacement(VariableScope from_scope, unsigned scopes, const char *loop) const
1099 {
1100         string replacement = resolved_name;
1101         InterfaceFlags iface = NO_INTERFACE;
1102         if(variable)
1103         {
1104                 iface = get_interface_flags(from_scope);
1105                 VariableScope prev_scope = previous_scope(from_scope, scopes);
1106                 if((iface&INPUT) && interfaces[prev_scope])
1107                         replacement = format("%c_%s", interfaces[prev_scope], replacement);
1108                 else if(inlined)
1109                 {
1110                         replacement = create_expression(scopes, loop);
1111                         if(inline_parens)
1112                                 replacement = "("+replacement+")";
1113                         return replacement;
1114                 }
1115         }
1116
1117         // Add an array subscript, unless the variable is embedded in a loop
1118         if(!array_subscript.empty() && !in_loop)
1119         {
1120                 if(loop)
1121                         return format("%s[%s]", replacement, loop);
1122                 else if(!variable || variable->scope==UNIFORM)
1123                         return replacement+"[0]";
1124         }
1125
1126         return replacement;
1127 }
1128
1129 string ProgramBuilder::ShaderVariable::create_expression(unsigned scopes, const char *loop) const
1130 {
1131         map<string, string> replace_map;
1132         for(list<ShaderVariable *>::const_iterator i=referenced_vars.begin(); i!=referenced_vars.end(); ++i)
1133         {
1134                 string replacement = (*i)->create_replacement(variable->scope, scopes, loop);
1135                 if(replacement!=(*i)->name)
1136                         replace_map[(*i)->name] = replacement;
1137         }
1138
1139         if(replace_map.empty())
1140                 return variable->expression;
1141         else
1142                 return replace_identifiers(variable->expression, replace_map);
1143 }
1144
1145
1146 ProgramBuilder::StandardFeatures::Loader::Loader(StandardFeatures &f):
1147         DataFile::ObjectLoader<StandardFeatures>(f)
1148 {
1149         add("clipping",  &StandardFeatures::clipping);
1150         add("custom",    &StandardFeatures::custom);
1151         add("fog",       &StandardFeatures::fog);
1152         add("geometry",  &StandardFeatures::geometry);
1153         add("lighting",  &StandardFeatures::lighting);
1154         add("material",  &StandardFeatures::material);
1155         add("max_clip_planes", &StandardFeatures::max_clip_planes);
1156         add("max_lights", &StandardFeatures::max_lights);
1157         add("normal_map", &StandardFeatures::normal_map);
1158         add("reflection", &StandardFeatures::reflection);
1159         add("shadow",    &StandardFeatures::shadow);
1160         add("skylight",  &StandardFeatures::skylight);
1161         add("specular",  &StandardFeatures::specular);
1162         add("texture",   &StandardFeatures::texture);
1163
1164         // Deprecated
1165         add("normalmap", &StandardFeatures::normal_map);
1166 }
1167
1168 #pragma GCC diagnostic pop
1169
1170 } // namespace GL
1171 } // namespace Msp