1 #include <msp/core/raii.h>
2 #include <msp/strings/format.h>
3 #include <msp/strings/utils.h>
6 #include "programcompiler.h"
14 const char builtins_src[] =
16 "out gl_PerVertex {\n"
17 " vec4 gl_Position;\n"
18 " float gl_ClipDistance[];\n"
22 " vec4 gl_Position;\n"
23 " float gl_ClipDistance[];\n"
25 "out gl_PerVertex {\n"
26 " vec4 gl_Position;\n"
27 " float gl_ClipDistance[];\n"
35 using namespace ProgramSyntax;
37 ProgramCompiler::ProgramCompiler():
42 void ProgramCompiler::compile(const string &source)
45 module = &parser.parse(source);
49 void ProgramCompiler::compile(IO::Base &io, Resources *res)
52 module = &parser.parse(io);
56 void ProgramCompiler::add_shaders(Program &program)
59 throw invalid_operation("ProgramCompiler::add_shaders");
61 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
65 program.attach_shader_owned(new VertexShader(apply<Formatter>(*i)));
66 for(map<string, unsigned>::iterator j=i->locations.begin(); j!=i->locations.end(); ++j)
67 program.bind_attribute(j->second, j->first);
69 else if(i->type==GEOMETRY)
70 program.attach_shader_owned(new GeometryShader(apply<Formatter>(*i)));
71 else if(i->type==FRAGMENT)
73 program.attach_shader_owned(new FragmentShader(apply<Formatter>(*i)));
74 for(map<string, unsigned>::iterator j=i->locations.begin(); j!=i->locations.end(); ++j)
75 program.bind_fragment_data(j->second, j->first);
80 Module *ProgramCompiler::create_builtins_module()
83 Module *module = new Module(parser.parse(builtins_src));
84 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
86 VariableResolver resolver;
87 i->content.visit(resolver);
88 for(map<string, VariableDeclaration *>::iterator j=i->content.variables.begin(); j!=i->content.variables.end(); ++j)
89 j->second->linked_declaration = j->second;
94 Module &ProgramCompiler::get_builtins_module()
96 static RefPtr<Module> builtins_module = create_builtins_module();
97 return *builtins_module;
100 Stage *ProgramCompiler::get_builtins(StageType type)
102 Module &module = get_builtins_module();
103 for(list<Stage>::iterator i=module.stages.begin(); i!=module.stages.end(); ++i)
109 void ProgramCompiler::process()
111 list<Import *> imports = apply<NodeGatherer<Import> >(module->shared);
112 for(list<Import *>::iterator i=imports.end(); i!=imports.begin(); )
113 import((*--i)->module);
114 apply<NodeRemover>(module->shared, set<Node *>(imports.begin(), imports.end()));
116 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
118 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); )
121 i = module->stages.begin();
127 void ProgramCompiler::import(const string &name)
129 string fn = name+".glsl";
130 RefPtr<IO::Seekable> io = (resources ? resources->open_raw(fn) : Resources::get_builtins().open(fn));
132 throw runtime_error(format("module %s not found", name));
133 ProgramParser import_parser;
134 Module &imported_module = import_parser.parse(*io);
136 inject_block(module->shared.content, imported_module.shared.content);
137 apply<DeclarationCombiner>(module->shared);
138 for(list<Stage>::iterator i=imported_module.stages.begin(); i!=imported_module.stages.end(); ++i)
140 list<Stage>::iterator j;
141 for(j=module->stages.begin(); (j!=module->stages.end() && j->type<i->type); ++j) ;
142 if(j==module->stages.end() || j->type>i->type)
144 j = module->stages.insert(j, *i);
145 list<Stage>::iterator k = j;
146 if(++k!=module->stages.end())
148 if(j!=module->stages.begin())
149 j->previous = &*--(k=j);
153 inject_block(j->content, i->content);
154 apply<DeclarationCombiner>(*j);
159 void ProgramCompiler::generate(Stage &stage)
161 inject_block(stage.content, module->shared.content);
163 apply<DeclarationReorderer>(stage);
164 apply<FunctionResolver>(stage);
165 apply<VariableResolver>(stage);
166 apply<InterfaceGenerator>(stage);
167 apply<VariableResolver>(stage);
168 apply<VariableRenamer>(stage);
169 apply<DeclarationReorderer>(stage);
170 apply<LegacyConverter>(stage);
173 bool ProgramCompiler::optimize(Stage &stage)
175 apply<ConstantConditionEliminator>(stage);
177 set<FunctionDeclaration *> inlineable = apply<InlineableFunctionLocator>(stage);
178 apply<FunctionInliner>(stage, inlineable);
180 set<Node *> unused = apply<UnusedVariableLocator>(stage);
181 set<Node *> unused2 = apply<UnusedFunctionLocator>(stage);
182 unused.insert(unused2.begin(), unused2.end());
183 apply<NodeRemover>(stage, unused);
185 return !unused.empty();
188 void ProgramCompiler::inject_block(Block &target, const Block &source)
190 list<RefPtr<Node> >::iterator insert_point = target.body.begin();
191 for(list<RefPtr<Node> >::const_iterator i=source.body.begin(); i!=source.body.end(); ++i)
192 target.body.insert(insert_point, (*i)->clone());
196 typename T::ResultType ProgramCompiler::apply(Stage &stage)
199 visitor.apply(stage);
200 return visitor.get_result();
203 template<typename T, typename A>
204 typename T::ResultType ProgramCompiler::apply(Stage &stage, const A &arg)
207 visitor.apply(stage);
208 return visitor.get_result();
212 ProgramCompiler::Visitor::Visitor():
216 void ProgramCompiler::Visitor::apply(Stage &s)
218 SetForScope<Stage *> set(stage, &s);
219 stage->content.visit(*this);
223 ProgramCompiler::Formatter::Formatter():
225 parameter_list(false),
229 void ProgramCompiler::Formatter::apply(ProgramSyntax::Stage &s)
231 const Version &ver = s.required_version;
233 formatted += format("#version %d%d\n", ver.major, ver.minor);
237 void ProgramCompiler::Formatter::visit(Literal &literal)
239 formatted += literal.token;
242 void ProgramCompiler::Formatter::visit(ParenthesizedExpression &parexpr)
245 parexpr.expression->visit(*this);
249 void ProgramCompiler::Formatter::visit(VariableReference &var)
251 formatted += var.name;
254 void ProgramCompiler::Formatter::visit(MemberAccess &memacc)
256 memacc.left->visit(*this);
257 formatted += format(".%s", memacc.member);
260 void ProgramCompiler::Formatter::visit(UnaryExpression &unary)
263 formatted += unary.oper;
264 unary.expression->visit(*this);
266 formatted += unary.oper;
269 void ProgramCompiler::Formatter::visit(BinaryExpression &binary)
271 binary.left->visit(*this);
272 formatted += binary.oper;
273 binary.right->visit(*this);
274 formatted += binary.after;
277 void ProgramCompiler::Formatter::visit(Assignment &assign)
279 assign.left->visit(*this);
280 formatted += format(" %s ", assign.oper);
281 assign.right->visit(*this);
284 void ProgramCompiler::Formatter::visit(FunctionCall &call)
286 formatted += format("%s(", call.name);
287 for(vector<RefPtr<Expression> >::iterator i=call.arguments.begin(); i!=call.arguments.end(); ++i)
289 if(i!=call.arguments.begin())
296 void ProgramCompiler::Formatter::visit(ExpressionStatement &expr)
298 expr.expression->visit(*this);
302 void ProgramCompiler::Formatter::visit(Block &block)
307 unsigned brace_indent = indent;
308 bool use_braces = (block.use_braces || (indent && block.body.size()!=1));
310 formatted += format("%s{\n", string(brace_indent*2, ' '));
312 SetForScope<unsigned> set(indent, indent+(indent>0 || use_braces));
313 string spaces(indent*2, ' ');
314 for(list<RefPtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); ++i)
316 if(i!=block.body.begin())
324 formatted += format("\n%s}", string(brace_indent*2, ' '));
327 void ProgramCompiler::Formatter::visit(Import &import)
329 formatted += format("import %s;", import.module);
332 void ProgramCompiler::Formatter::visit(Layout &layout)
334 formatted += "layout(";
335 for(vector<Layout::Qualifier>::const_iterator i=layout.qualifiers.begin(); i!=layout.qualifiers.end(); ++i)
337 if(i!=layout.qualifiers.begin())
339 formatted += i->identifier;
340 if(!i->value.empty())
341 formatted += format("=%s", i->value);
346 void ProgramCompiler::Formatter::visit(InterfaceLayout &layout)
348 layout.layout.visit(*this);
349 formatted += format(" %s;", layout.interface);
352 void ProgramCompiler::Formatter::visit(StructDeclaration &strct)
354 formatted += format("struct %s\n", strct.name);
355 strct.members.visit(*this);
359 void ProgramCompiler::Formatter::visit(VariableDeclaration &var)
363 var.layout->visit(*this);
367 formatted += "const ";
368 if(!var.sampling.empty())
369 formatted += format("%s ", var.sampling);
370 if(!var.interface.empty() && var.interface!=block_interface)
372 string interface = var.interface;
373 if(stage->required_version<Version(1, 30))
375 if(stage->type==VERTEX && var.interface=="in")
376 interface = "attribute";
377 else if((stage->type==VERTEX && var.interface=="out") || (stage->type==FRAGMENT && var.interface=="in"))
378 interface = "varying";
380 formatted += format("%s ", interface);
382 formatted += format("%s %s", var.type, var.name);
387 var.array_size->visit(*this);
390 if(var.init_expression)
393 var.init_expression->visit(*this);
399 void ProgramCompiler::Formatter::visit(InterfaceBlock &iface)
401 SetForScope<string> set(block_interface, iface.interface);
402 formatted += format("%s %s\n", iface.interface, iface.name);
403 iface.members.visit(*this);
407 void ProgramCompiler::Formatter::visit(FunctionDeclaration &func)
409 formatted += format("%s %s(", func.return_type, func.name);
410 for(vector<RefPtr<VariableDeclaration> >::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
412 if(i!=func.parameters.begin())
414 SetFlag set(parameter_list);
418 if(func.definition==&func)
421 func.body.visit(*this);
427 void ProgramCompiler::Formatter::visit(Conditional &cond)
430 formatted.replace(formatted.rfind('\n'), string::npos, 1, ' ');
435 cond.condition->visit(*this);
438 cond.body.visit(*this);
439 if(!cond.else_body.body.empty())
441 formatted += format("\n%selse\n", string(indent*2, ' '));
442 SetForScope<unsigned> set(else_if, 2);
443 cond.else_body.visit(*this);
447 void ProgramCompiler::Formatter::visit(Iteration &iter)
450 iter.init_statement->visit(*this);
452 iter.condition->visit(*this);
454 iter.loop_expression->visit(*this);
456 iter.body.visit(*this);
459 void ProgramCompiler::Formatter::visit(Return &ret)
461 formatted += "return ";
462 ret.expression->visit(*this);
466 void ProgramCompiler::Formatter::visit(Jump &jump)
468 formatted += jump.keyword;
473 ProgramCompiler::DeclarationCombiner::DeclarationCombiner():
478 void ProgramCompiler::DeclarationCombiner::visit(Block &block)
483 SetForScope<bool> set(toplevel, false);
484 for(list<RefPtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
489 block.body.erase(i++);
495 void ProgramCompiler::DeclarationCombiner::visit(FunctionDeclaration &func)
497 vector<FunctionDeclaration *> &decls = functions[func.name];
500 for(vector<FunctionDeclaration *>::iterator i=decls.begin(); i!=decls.end(); ++i)
502 (*i)->definition = func.definition;
503 (*i)->body.body.clear();
506 decls.push_back(&func);
509 void ProgramCompiler::DeclarationCombiner::visit(VariableDeclaration &var)
511 VariableDeclaration *&ptr = variables[var.name];
514 ptr->type = var.type;
515 if(var.init_expression)
516 ptr->init_expression = var.init_expression;
524 ProgramCompiler::VariableResolver::VariableResolver():
526 record_target(false),
527 assignment_target(0),
528 self_referencing(false)
531 void ProgramCompiler::VariableResolver::apply(Stage &s)
533 SetForScope<Stage *> set(stage, &s);
534 Stage *builtins = get_builtins(stage->type);
536 blocks.push_back(&builtins->content);
537 stage->content.visit(*this);
542 void ProgramCompiler::VariableResolver::visit(Block &block)
544 blocks.push_back(&block);
545 block.variables.clear();
546 TraversingVisitor::visit(block);
550 void ProgramCompiler::VariableResolver::visit(VariableReference &var)
554 for(vector<Block *>::iterator i=blocks.end(); i!=blocks.begin(); )
557 map<string, VariableDeclaration *>::iterator j = (*i)->variables.find(var.name);
558 if(j!=(*i)->variables.end())
560 var.declaration = j->second;
561 type = j->second->type_declaration;
568 if(assignment_target)
570 record_target = false;
571 assignment_target = 0;
574 assignment_target = var.declaration;
576 else if(var.declaration && var.declaration==assignment_target)
577 self_referencing = true;
580 void ProgramCompiler::VariableResolver::visit(MemberAccess &memacc)
583 TraversingVisitor::visit(memacc);
584 memacc.declaration = 0;
587 map<string, VariableDeclaration *>::iterator i = type->members.variables.find(memacc.member);
588 if(i!=type->members.variables.end())
590 memacc.declaration = i->second;
591 type = i->second->type_declaration;
598 void ProgramCompiler::VariableResolver::visit(BinaryExpression &binary)
603 SetForScope<bool> set(record_target, false);
604 binary.right->visit(*this);
607 binary.left->visit(*this);
611 TraversingVisitor::visit(binary);
616 void ProgramCompiler::VariableResolver::visit(Assignment &assign)
619 SetFlag set(record_target);
620 assignment_target = 0;
621 assign.left->visit(*this);
624 self_referencing = false;
625 assign.right->visit(*this);
627 assign.self_referencing = (self_referencing || assign.oper!="=");
628 assign.target_declaration = assignment_target;
631 void ProgramCompiler::VariableResolver::visit(StructDeclaration &strct)
633 TraversingVisitor::visit(strct);
634 blocks.back()->types[strct.name] = &strct;
637 void ProgramCompiler::VariableResolver::visit(VariableDeclaration &var)
639 for(vector<Block *>::iterator i=blocks.end(); i!=blocks.begin(); )
642 map<string, StructDeclaration *>::iterator j = (*i)->types.find(var.type);
643 if(j!=(*i)->types.end())
644 var.type_declaration = j->second;
647 if(!block_interface.empty() && var.interface.empty())
648 var.interface = block_interface;
650 TraversingVisitor::visit(var);
651 blocks.back()->variables[var.name] = &var;
652 if(anonymous && blocks.size()>1)
653 blocks[blocks.size()-2]->variables[var.name] = &var;
656 void ProgramCompiler::VariableResolver::visit(InterfaceBlock &iface)
658 SetFlag set(anonymous);
659 SetForScope<string> set2(block_interface, iface.interface);
660 TraversingVisitor::visit(iface);
664 void ProgramCompiler::FunctionResolver::visit(FunctionCall &call)
666 map<string, vector<FunctionDeclaration *> >::iterator i = functions.find(call.name);
667 if(i!=functions.end())
668 call.declaration = i->second.back();
670 TraversingVisitor::visit(call);
673 void ProgramCompiler::FunctionResolver::visit(FunctionDeclaration &func)
675 vector<FunctionDeclaration *> &decls = functions[func.name];
678 for(vector<FunctionDeclaration *>::iterator i=decls.begin(); i!=decls.end(); ++i)
679 (*i)->definition = func.definition;
681 decls.push_back(&func);
683 else if(!decls.empty() && decls.back()->definition)
684 func.definition = decls.back()->definition;
686 decls.push_back(&func);
688 TraversingVisitor::visit(func);
692 ProgramCompiler::BlockModifier::BlockModifier():
696 void ProgramCompiler::BlockModifier::flatten_block(Block &block)
698 insert_nodes.insert(insert_nodes.end(), block.body.begin(), block.body.end());
702 void ProgramCompiler::BlockModifier::apply_and_increment(Block &block, list<RefPtr<Node> >::iterator &i)
704 block.body.insert(i, insert_nodes.begin(), insert_nodes.end());
705 insert_nodes.clear();
708 block.body.erase(i++);
714 void ProgramCompiler::BlockModifier::visit(Block &block)
716 for(list<RefPtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
719 apply_and_increment(block, i);
724 ProgramCompiler::InterfaceGenerator::InterfaceGenerator():
728 string ProgramCompiler::InterfaceGenerator::get_out_prefix(StageType type)
732 else if(type==GEOMETRY)
738 void ProgramCompiler::InterfaceGenerator::apply(Stage &s)
740 SetForScope<Stage *> set(stage, &s);
742 in_prefix = get_out_prefix(stage->previous->type);
743 out_prefix = get_out_prefix(stage->type);
744 stage->content.visit(*this);
747 void ProgramCompiler::InterfaceGenerator::visit(Block &block)
749 SetForScope<unsigned> set(scope_level, scope_level+1);
750 for(list<RefPtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
756 for(map<string, RefPtr<VariableDeclaration> >::iterator j=iface_declarations.begin(); j!=iface_declarations.end(); ++j)
758 list<RefPtr<Node> >::iterator k = block.body.insert(i, j->second);
761 iface_declarations.clear();
764 apply_and_increment(block, i);
768 string ProgramCompiler::InterfaceGenerator::change_prefix(const string &name, const string &prefix) const
770 unsigned offset = (name.compare(0, in_prefix.size(), in_prefix) ? 0 : in_prefix.size());
771 return prefix+name.substr(offset);
774 bool ProgramCompiler::InterfaceGenerator::generate_interface(VariableDeclaration &var, const string &iface, const string &name)
776 const map<string, VariableDeclaration *> &stage_vars = (iface=="in" ? stage->in_variables : stage->out_variables);
777 if(stage_vars.count(name) || iface_declarations.count(name))
780 VariableDeclaration* iface_var = new VariableDeclaration;
781 iface_var->sampling = var.sampling;
782 iface_var->interface = iface;
783 iface_var->type = var.type;
784 iface_var->type_declaration = var.type_declaration;
785 iface_var->name = name;
786 if(stage->type==GEOMETRY)
787 iface_var->array = ((var.array && var.interface!="in") || iface=="in");
789 iface_var->array = var.array;
791 iface_var->array_size = var.array_size;
793 iface_var->linked_declaration = &var;
794 iface_declarations[name] = iface_var;
799 void ProgramCompiler::InterfaceGenerator::insert_assignment(const string &left, ProgramSyntax::Expression *right)
801 Assignment *assign = new Assignment;
802 VariableReference *ref = new VariableReference;
806 assign->right = right;
808 ExpressionStatement *stmt = new ExpressionStatement;
809 stmt->expression = assign;
810 insert_nodes.push_back(stmt);
813 void ProgramCompiler::InterfaceGenerator::visit(VariableReference &var)
815 if(var.declaration || !stage->previous)
817 if(iface_declarations.count(var.name))
820 const map<string, VariableDeclaration *> &prev_out = stage->previous->out_variables;
821 map<string, VariableDeclaration *>::const_iterator i = prev_out.find(var.name);
822 if(i==prev_out.end())
823 i = prev_out.find(in_prefix+var.name);
824 if(i!=prev_out.end())
825 generate_interface(*i->second, "in", var.name);
828 void ProgramCompiler::InterfaceGenerator::visit(VariableDeclaration &var)
830 if(var.interface=="out")
833 stage->out_variables[var.name] = &var;
834 else if(generate_interface(var, "out", change_prefix(var.name, string())))
837 if(var.init_expression)
838 insert_assignment(var.name, var.init_expression->clone());
841 else if(var.interface=="in")
843 stage->in_variables[var.name] = &var;
844 if(var.linked_declaration)
845 var.linked_declaration->linked_declaration = &var;
846 else if(stage->previous)
848 const map<string, VariableDeclaration *> &prev_out = stage->previous->out_variables;
849 map<string, VariableDeclaration *>::const_iterator i = prev_out.find(var.name);
850 if(i!=prev_out.end())
852 var.linked_declaration = i->second;
853 i->second->linked_declaration = &var;
858 TraversingVisitor::visit(var);
861 void ProgramCompiler::InterfaceGenerator::visit(Passthrough &pass)
863 vector<VariableDeclaration *> pass_vars;
865 for(map<string, VariableDeclaration *>::const_iterator i=stage->in_variables.begin(); i!=stage->in_variables.end(); ++i)
866 pass_vars.push_back(i->second);
867 for(map<string, RefPtr<VariableDeclaration> >::const_iterator i=iface_declarations.begin(); i!=iface_declarations.end(); ++i)
868 if(i->second->interface=="in")
869 pass_vars.push_back(i->second.get());
873 const map<string, VariableDeclaration *> &prev_out = stage->previous->out_variables;
874 for(map<string, VariableDeclaration *>::const_iterator i=prev_out.begin(); i!=prev_out.end(); ++i)
877 for(vector<VariableDeclaration *>::const_iterator j=pass_vars.begin(); (!linked && j!=pass_vars.end()); ++j)
878 linked = ((*j)->linked_declaration==i->second);
880 if(!linked && generate_interface(*i->second, "in", i->second->name))
881 pass_vars.push_back(i->second);
885 if(stage->type==GEOMETRY)
887 VariableReference *ref = new VariableReference;
890 BinaryExpression *subscript = new BinaryExpression;
891 subscript->left = ref;
892 subscript->oper = "[";
893 subscript->right = pass.subscript;
894 subscript->after = "]";
896 MemberAccess *memacc = new MemberAccess;
897 memacc->left = subscript;
898 memacc->member = "gl_Position";
900 insert_assignment("gl_Position", memacc);
903 for(vector<VariableDeclaration *>::const_iterator i=pass_vars.begin(); i!=pass_vars.end(); ++i)
905 string out_name = change_prefix((*i)->name, out_prefix);
906 generate_interface(**i, "out", out_name);
908 VariableReference *ref = new VariableReference;
909 ref->name = (*i)->name;
912 BinaryExpression *subscript = new BinaryExpression;
913 subscript->left = ref;
914 subscript->oper = "[";
915 subscript->right = pass.subscript;
916 subscript->after = "]";
917 insert_assignment(out_name, subscript);
920 insert_assignment(out_name, ref);
927 void ProgramCompiler::VariableRenamer::visit(VariableReference &var)
930 var.name = var.declaration->name;
933 void ProgramCompiler::VariableRenamer::visit(VariableDeclaration &var)
935 if(var.linked_declaration)
936 var.name = var.linked_declaration->name;
937 TraversingVisitor::visit(var);
941 ProgramCompiler::DeclarationReorderer::DeclarationReorderer():
945 void ProgramCompiler::DeclarationReorderer::visit(Block &block)
947 list<RefPtr<Node> >::iterator struct_insert_point = block.body.end();
948 list<RefPtr<Node> >::iterator variable_insert_point = block.body.end();
950 for(list<RefPtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
952 kind = NO_DECLARATION;
956 if(kind==STRUCT && struct_insert_point!=block.body.end())
958 block.body.insert(struct_insert_point, *i);
961 else if(kind>STRUCT && struct_insert_point==block.body.end())
962 struct_insert_point = i;
964 if(kind==VARIABLE && variable_insert_point!=block.body.end())
966 block.body.insert(variable_insert_point, *i);
969 else if(kind>VARIABLE && variable_insert_point==block.body.end())
970 variable_insert_point = i;
973 block.body.erase(i++);
980 ProgramCompiler::InlineableFunctionLocator::InlineableFunctionLocator():
984 void ProgramCompiler::InlineableFunctionLocator::visit(FunctionCall &call)
986 FunctionDeclaration *def = call.declaration;
987 if(def && def->definition!=def)
988 def = def->definition;
992 unsigned &count = refcounts[def];
994 if(count>1 || def==in_function)
995 inlineable.erase(def);
998 TraversingVisitor::visit(call);
1001 void ProgramCompiler::InlineableFunctionLocator::visit(FunctionDeclaration &func)
1003 unsigned &count = refcounts[func.definition];
1004 if(!count && func.parameters.empty())
1005 inlineable.insert(func.definition);
1007 SetForScope<FunctionDeclaration *> set(in_function, &func);
1008 TraversingVisitor::visit(func);
1012 ProgramCompiler::FunctionInliner::FunctionInliner():
1016 ProgramCompiler::FunctionInliner::FunctionInliner(const set<FunctionDeclaration *> &in):
1021 void ProgramCompiler::FunctionInliner::visit_and_inline(RefPtr<Expression> &ptr)
1026 ptr = inline_result;
1029 void ProgramCompiler::FunctionInliner::visit(Block &block)
1034 for(list<RefPtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); ++i)
1042 void ProgramCompiler::FunctionInliner::visit(UnaryExpression &unary)
1044 visit_and_inline(unary.expression);
1048 void ProgramCompiler::FunctionInliner::visit(BinaryExpression &binary)
1050 visit_and_inline(binary.left);
1051 visit_and_inline(binary.right);
1055 void ProgramCompiler::FunctionInliner::visit(FunctionCall &call)
1057 for(vector<RefPtr<Expression> >::iterator i=call.arguments.begin(); i!=call.arguments.end(); ++i)
1058 visit_and_inline(*i);
1060 FunctionDeclaration *def = call.declaration;
1061 if(def && def->definition!=def)
1062 def = def->definition;
1064 if(def && inlineable.count(def))
1073 void ProgramCompiler::FunctionInliner::visit(Return &ret)
1075 TraversingVisitor::visit(ret);
1078 inline_result = ret.expression->clone();
1082 ProgramCompiler::ExpressionEvaluator::ExpressionEvaluator():
1088 ProgramCompiler::ExpressionEvaluator::ExpressionEvaluator(const ValueMap &v):
1089 variable_values(&v),
1094 void ProgramCompiler::ExpressionEvaluator::visit(Literal &literal)
1096 if(literal.token=="true")
1098 else if(literal.token=="false")
1101 result = lexical_cast<float>(literal.token);
1102 result_valid = true;
1105 void ProgramCompiler::ExpressionEvaluator::visit(ParenthesizedExpression &parexp)
1107 parexp.expression->visit(*this);
1110 void ProgramCompiler::ExpressionEvaluator::visit(VariableReference &var)
1112 if(!var.declaration)
1117 ValueMap::const_iterator i = variable_values->find(var.declaration);
1118 if(i!=variable_values->end())
1119 i->second->visit(*this);
1121 else if(var.declaration->init_expression)
1122 var.declaration->init_expression->visit(*this);
1125 void ProgramCompiler::ExpressionEvaluator::visit(UnaryExpression &unary)
1127 result_valid = false;
1128 unary.expression->visit(*this);
1135 result_valid = false;
1138 void ProgramCompiler::ExpressionEvaluator::visit(BinaryExpression &binary)
1140 result_valid = false;
1141 binary.left->visit(*this);
1145 float left_result = result;
1146 result_valid = false;
1147 binary.right->visit(*this);
1151 if(binary.oper=="<")
1152 result = (left_result<result);
1153 else if(binary.oper=="<=")
1154 result = (left_result<=result);
1155 else if(binary.oper==">")
1156 result = (left_result>result);
1157 else if(binary.oper==">=")
1158 result = (left_result>=result);
1159 else if(binary.oper=="==")
1160 result = (left_result==result);
1161 else if(binary.oper=="!=")
1162 result = (left_result!=result);
1163 else if(binary.oper=="&&")
1164 result = (left_result && result);
1165 else if(binary.oper=="||")
1166 result = (left_result || result);
1168 result_valid = false;
1172 ProgramCompiler::ConstantConditionEliminator::ConstantConditionEliminator():
1176 void ProgramCompiler::ConstantConditionEliminator::visit(Block &block)
1178 SetForScope<unsigned> set(scope_level, scope_level+1);
1179 BlockModifier::visit(block);
1181 for(map<string, VariableDeclaration *>::const_iterator i=block.variables.begin(); i!=block.variables.end(); ++i)
1182 variable_values.erase(i->second);
1185 void ProgramCompiler::ConstantConditionEliminator::visit(Assignment &assign)
1187 variable_values.erase(assign.target_declaration);
1190 void ProgramCompiler::ConstantConditionEliminator::visit(VariableDeclaration &var)
1192 if(var.constant || scope_level>1)
1193 variable_values[&var] = var.init_expression.get();
1196 void ProgramCompiler::ConstantConditionEliminator::visit(Conditional &cond)
1198 ExpressionEvaluator eval(variable_values);
1199 cond.condition->visit(eval);
1200 if(eval.result_valid)
1201 flatten_block(eval.result ? cond.body : cond.else_body);
1203 TraversingVisitor::visit(cond);
1206 void ProgramCompiler::ConstantConditionEliminator::visit(Iteration &iter)
1210 ExpressionEvaluator eval;
1211 iter.condition->visit(eval);
1212 if(eval.result_valid && !eval.result)
1219 TraversingVisitor::visit(iter);
1223 ProgramCompiler::UnusedVariableLocator::UnusedVariableLocator():
1226 assignment_target(false),
1230 void ProgramCompiler::UnusedVariableLocator::apply(Stage &s)
1232 variables.push_back(BlockVariableMap());
1234 BlockVariableMap &global_variables = variables.back();
1235 for(BlockVariableMap::iterator i=global_variables.begin(); i!=global_variables.end(); ++i)
1237 if(i->first->interface=="out" && (s.type==FRAGMENT || i->first->linked_declaration || !i->first->name.compare(0, 3, "gl_")))
1239 if(!i->second.referenced)
1241 unused_nodes.insert(i->first);
1242 clear_assignments(i->second, true);
1245 variables.pop_back();
1248 void ProgramCompiler::UnusedVariableLocator::visit(VariableReference &var)
1250 map<VariableDeclaration *, Node *>::iterator i = aggregates.find(var.declaration);
1251 if(i!=aggregates.end())
1252 unused_nodes.erase(i->second);
1254 if(var.declaration && !assignment_target)
1256 VariableInfo &var_info = variables.back()[var.declaration];
1257 var_info.assignments.clear();
1258 var_info.referenced = true;
1262 void ProgramCompiler::UnusedVariableLocator::visit(MemberAccess &memacc)
1264 TraversingVisitor::visit(memacc);
1265 unused_nodes.erase(memacc.declaration);
1268 void ProgramCompiler::UnusedVariableLocator::visit(BinaryExpression &binary)
1270 if(binary.oper=="[")
1272 binary.left->visit(*this);
1273 SetForScope<bool> set(assignment_target, false);
1274 binary.right->visit(*this);
1277 TraversingVisitor::visit(binary);
1280 void ProgramCompiler::UnusedVariableLocator::visit(Assignment &assign)
1283 SetForScope<bool> set(assignment_target, !assign.self_referencing);
1284 assign.left->visit(*this);
1286 assign.right->visit(*this);
1287 assignment = &assign;
1290 void ProgramCompiler::UnusedVariableLocator::record_assignment(VariableDeclaration &var, Node &node, bool self_ref)
1292 VariableInfo &var_info = variables.back()[&var];
1294 clear_assignments(var_info, true);
1295 var_info.assignments.push_back(&node);
1296 var_info.conditionally_assigned = false;
1299 void ProgramCompiler::UnusedVariableLocator::clear_assignments(VariableInfo &var_info, bool mark_unused)
1303 for(vector<Node *>::iterator i=var_info.assignments.begin(); i!=var_info.assignments.end(); ++i)
1304 unused_nodes.insert(*i);
1306 var_info.assignments.clear();
1309 void ProgramCompiler::UnusedVariableLocator::visit(ExpressionStatement &expr)
1312 TraversingVisitor::visit(expr);
1313 if(assignment && assignment->target_declaration)
1314 record_assignment(*assignment->target_declaration, expr, assignment->self_referencing);
1317 void ProgramCompiler::UnusedVariableLocator::visit(StructDeclaration &strct)
1319 SetForScope<Node *> set(aggregate, &strct);
1320 unused_nodes.insert(&strct);
1321 TraversingVisitor::visit(strct);
1324 void ProgramCompiler::UnusedVariableLocator::visit(VariableDeclaration &var)
1327 aggregates[&var] = aggregate;
1330 variables.back()[&var].local = true;
1331 if(var.init_expression)
1332 record_assignment(var, *var.init_expression, false);
1334 unused_nodes.erase(var.type_declaration);
1335 TraversingVisitor::visit(var);
1338 void ProgramCompiler::UnusedVariableLocator::visit(InterfaceBlock &iface)
1340 SetForScope<Node *> set(aggregate, &iface);
1341 unused_nodes.insert(&iface);
1342 TraversingVisitor::visit(iface);
1345 void ProgramCompiler::UnusedVariableLocator::visit(FunctionDeclaration &func)
1347 variables.push_back(BlockVariableMap());
1350 SetForScope<bool> set(global_scope, false);
1351 for(vector<RefPtr<VariableDeclaration> >::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
1353 func.body.visit(*this);
1356 BlockVariableMap &block_variables = variables.back();
1357 for(BlockVariableMap::iterator i=block_variables.begin(); i!=block_variables.end(); ++i)
1358 i->second.conditionally_assigned = true;
1359 for(vector<RefPtr<VariableDeclaration> >::iterator i=func.parameters.begin(); i!=func.parameters.end(); ++i)
1360 block_variables[i->get()].referenced = true;
1361 merge_down_variables();
1364 void ProgramCompiler::UnusedVariableLocator::merge_down_variables()
1366 BlockVariableMap &parent_variables = variables[variables.size()-2];
1367 BlockVariableMap &block_variables = variables.back();
1368 for(BlockVariableMap::iterator i=block_variables.begin(); i!=block_variables.end(); ++i)
1372 if(!i->second.referenced)
1373 unused_nodes.insert(i->first);
1374 clear_assignments(i->second, true);
1378 BlockVariableMap::iterator j = parent_variables.find(i->first);
1379 if(j==parent_variables.end())
1380 parent_variables.insert(*i);
1383 if(i->second.referenced || !i->second.conditionally_assigned)
1384 clear_assignments(j->second, !i->second.referenced);
1385 j->second.conditionally_assigned = i->second.conditionally_assigned;
1386 j->second.referenced |= i->second.referenced;
1387 j->second.assignments.insert(j->second.assignments.end(), i->second.assignments.begin(), i->second.assignments.end());
1390 variables.pop_back();
1393 void ProgramCompiler::UnusedVariableLocator::visit(Conditional &cond)
1395 cond.condition->visit(*this);
1396 variables.push_back(BlockVariableMap());
1397 cond.body.visit(*this);
1399 BlockVariableMap if_variables;
1400 swap(variables.back(), if_variables);
1401 cond.else_body.visit(*this);
1403 BlockVariableMap &else_variables = variables.back();
1404 for(BlockVariableMap::iterator i=else_variables.begin(); i!=else_variables.end(); ++i)
1406 BlockVariableMap::iterator j = if_variables.find(i->first);
1407 if(j!=if_variables.end())
1409 i->second.assignments.insert(i->second.assignments.end(), j->second.assignments.begin(), j->second.assignments.end());
1410 i->second.conditionally_assigned |= j->second.conditionally_assigned;
1411 if_variables.erase(j);
1414 i->second.conditionally_assigned = true;
1417 for(BlockVariableMap::iterator i=if_variables.begin(); i!=if_variables.end(); ++i)
1419 i->second.conditionally_assigned = true;
1420 else_variables.insert(*i);
1423 merge_down_variables();
1426 void ProgramCompiler::UnusedVariableLocator::visit(Iteration &iter)
1428 variables.push_back(BlockVariableMap());
1429 TraversingVisitor::visit(iter);
1431 BlockVariableMap &block_variables = variables.back();
1432 for(BlockVariableMap::iterator i=block_variables.begin(); i!=block_variables.end(); ++i)
1433 if(!i->second.local && i->second.referenced)
1434 i->second.assignments.clear();
1436 merge_down_variables();
1440 ProgramCompiler::UnusedVariableLocator::VariableInfo::VariableInfo():
1442 conditionally_assigned(false),
1447 void ProgramCompiler::UnusedFunctionLocator::visit(FunctionCall &call)
1449 TraversingVisitor::visit(call);
1451 unused_nodes.erase(call.declaration);
1452 if(call.declaration && call.declaration->definition!=call.declaration)
1453 used_definitions.insert(call.declaration->definition);
1456 void ProgramCompiler::UnusedFunctionLocator::visit(FunctionDeclaration &func)
1458 TraversingVisitor::visit(func);
1460 if((func.name!="main" || func.body.body.empty()) && !used_definitions.count(&func))
1461 unused_nodes.insert(&func);
1465 ProgramCompiler::NodeRemover::NodeRemover(const set<Node *> &r):
1469 void ProgramCompiler::NodeRemover::visit(Block &block)
1471 for(list<RefPtr<Node> >::iterator i=block.body.begin(); i!=block.body.end(); )
1474 if(to_remove.count(i->get()))
1475 block.body.erase(i++);
1481 void ProgramCompiler::NodeRemover::visit(VariableDeclaration &var)
1483 if(to_remove.count(&var))
1485 stage->in_variables.erase(var.name);
1486 stage->out_variables.erase(var.name);
1487 stage->locations.erase(var.name);
1488 if(var.linked_declaration)
1489 var.linked_declaration->linked_declaration = 0;
1491 else if(var.init_expression && to_remove.count(var.init_expression.get()))
1492 var.init_expression = 0;
1496 ProgramCompiler::LegacyConverter::LegacyConverter():
1497 target_version(get_glsl_version()),
1501 ProgramCompiler::LegacyConverter::LegacyConverter(const Version &v):
1506 bool ProgramCompiler::LegacyConverter::check_version(const Version &feature_version)
1508 if(target_version<feature_version)
1510 else if(stage->required_version<feature_version)
1511 stage->required_version = feature_version;
1516 void ProgramCompiler::LegacyConverter::visit(VariableReference &var)
1518 if(var.declaration==frag_out && !check_version(Version(1, 30)))
1520 var.name = "gl_FragColor";
1521 var.declaration = 0;
1524 else if(var.declaration)
1525 type = var.declaration->type;
1530 void ProgramCompiler::LegacyConverter::visit(Assignment &assign)
1532 TraversingVisitor::visit(assign);
1533 if(assign.target_declaration==frag_out && !check_version(Version(1, 30)))
1534 assign.target_declaration = 0;
1537 void ProgramCompiler::LegacyConverter::visit(FunctionCall &call)
1539 if(call.name=="texture" && !call.declaration && !check_version(Version(1, 30)))
1541 vector<RefPtr<Expression> >::iterator i = call.arguments.begin();
1542 if(i!=call.arguments.end())
1545 if(type=="sampler1D")
1546 call.name = "texture1D";
1547 else if(type=="sampler2D")
1548 call.name = "texture2D";
1549 else if(type=="sampler3D")
1550 call.name = "texture3D";
1551 else if(type=="sampler1DShadow")
1552 call.name = "shadow1D";
1553 else if(type=="sampler2DShadow")
1554 call.name = "shadow2D";
1556 for(; i!=call.arguments.end(); ++i)
1561 TraversingVisitor::visit(call);
1564 void ProgramCompiler::LegacyConverter::visit(VariableDeclaration &var)
1566 if(var.layout && !check_version(Version(3, 30)))
1568 vector<Layout::Qualifier>::iterator i;
1569 for(i=var.layout->qualifiers.begin(); (i!=var.layout->qualifiers.end() && i->identifier!="location"); ++i) ;
1570 if(i!=var.layout->qualifiers.end())
1572 unsigned location = lexical_cast<unsigned>(i->value);
1573 if(stage->type==VERTEX && var.interface=="in")
1575 stage->locations[var.name] = location;
1576 var.layout->qualifiers.erase(i);
1578 else if(stage->type==FRAGMENT && var.interface=="out")
1580 stage->locations[var.name] = location;
1581 var.layout->qualifiers.erase(i);
1584 if(var.layout->qualifiers.empty())
1589 if((var.interface=="in" || var.interface=="out") && !check_version(Version(1, 30)))
1591 if(stage->type==FRAGMENT && var.interface=="out")
1598 TraversingVisitor::visit(var);
1601 void ProgramCompiler::LegacyConverter::visit(InterfaceBlock &iface)
1603 if(!check_version(Version(1, 50)))
1604 flatten_block(iface.members);