1 #include <msp/core/algorithm.h>
2 #include <msp/gl/extensions/ext_gpu_shader4.h>
3 #include <msp/strings/format.h>
4 #include "compatibility.h"
10 #include "resources.h"
30 void Compiler::clear()
33 module = new Module();
34 imported_names.clear();
35 module->source_map.set_name(0, "<generated>");
38 void Compiler::set_source(const string &source, const string &src_name)
42 imported_names.push_back(src_name);
43 append_module(parser.parse(source, src_name, 1), 0);
46 void Compiler::load_source(IO::Base &io, DataFile::Collection *res, const string &src_name)
50 imported_names.push_back(src_name);
51 append_module(parser.parse(io, src_name, 1), res);
54 void Compiler::load_source(IO::Base &io, const string &src_name)
56 load_source(io, 0, src_name);
59 void Compiler::compile()
61 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
63 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); )
66 i = module->stages.begin();
70 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
74 void Compiler::add_shaders(Program &program)
77 throw invalid_operation("Compiler::add_shaders");
81 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
83 string stage_src = Formatter().apply(*i);
85 if(i->type==Stage::VERTEX)
87 program.attach_shader_owned(new VertexShader(stage_src));
88 for(map<string, unsigned>::iterator j=i->locations.begin(); j!=i->locations.end(); ++j)
89 program.bind_attribute(j->second, j->first);
91 else if(i->type==Stage::GEOMETRY)
92 program.attach_shader_owned(new GeometryShader(stage_src));
93 else if(i->type==Stage::FRAGMENT)
95 program.attach_shader_owned(new FragmentShader(stage_src));
98 for(map<string, unsigned>::iterator j=i->locations.begin(); j!=i->locations.end(); ++j)
99 program.bind_fragment_data(j->second, j->first);
104 catch(const compile_error &e)
106 throw compile_error(module->source_map.translate_errors(e.what()));
110 void Compiler::append_module(Module &mod, DataFile::Collection *res)
112 module->source_map.merge_from(mod.source_map);
114 vector<Import *> imports = NodeGatherer<Import>().apply(mod.shared);
115 for(vector<Import *>::iterator i=imports.begin(); i!=imports.end(); ++i)
116 import(res, (*i)->module);
117 NodeRemover().apply(mod.shared, set<Node *>(imports.begin(), imports.end()));
119 append_stage(mod.shared);
120 for(list<Stage>::iterator i=mod.stages.begin(); i!=mod.stages.end(); ++i)
124 void Compiler::append_stage(Stage &stage)
127 if(stage.type==Stage::SHARED)
128 target = &module->shared;
131 list<Stage>::iterator i;
132 for(i=module->stages.begin(); (i!=module->stages.end() && i->type<stage.type); ++i) ;
133 if(i==module->stages.end() || i->type>stage.type)
135 list<Stage>::iterator j = module->stages.insert(i, stage.type);
136 if(i!=module->stages.end())
139 if(i!=module->stages.begin())
146 if(stage.required_version>target->required_version)
147 target->required_version = stage.required_version;
148 for(NodeList<Statement>::iterator i=stage.content.body.begin(); i!=stage.content.body.end(); ++i)
149 target->content.body.push_back(*i);
150 DeclarationCombiner().apply(*target);
153 void Compiler::import(DataFile::Collection *resources, const string &name)
155 string fn = name+".glsl";
156 if(find(imported_names, fn)!=imported_names.end())
158 imported_names.push_back(fn);
160 RefPtr<IO::Seekable> io = (resources ? resources->open_raw(fn) : Resources::get_builtins().open(fn));
162 throw runtime_error(format("module %s not found", name));
163 Parser import_parser;
164 append_module(import_parser.parse(*io, fn, module->source_map.get_count()), resources);
167 void Compiler::generate(Stage &stage)
169 if(module->shared.required_version>stage.required_version)
170 stage.required_version = module->shared.required_version;
171 inject_block(stage.content, module->shared.content);
173 DeclarationReorderer().apply(stage);
174 FunctionResolver().apply(stage);
175 VariableResolver().apply(stage);
176 InterfaceGenerator().apply(stage);
177 VariableResolver().apply(stage);
178 DeclarationReorderer().apply(stage);
179 FunctionResolver().apply(stage);
180 LegacyConverter().apply(stage);
183 bool Compiler::optimize(Stage &stage)
185 ConstantConditionEliminator().apply(stage);
187 FunctionInliner().apply(stage);
189 bool result = UnusedVariableRemover().apply(stage);
190 result |= UnusedFunctionRemover().apply(stage);
195 void Compiler::finalize(Stage &stage)
197 if(get_gl_api()==OPENGL_ES2)
198 DefaultPrecisionGenerator().apply(stage);
200 PrecisionRemover().apply(stage);
203 void Compiler::inject_block(Block &target, const Block &source)
205 NodeList<Statement>::iterator insert_point = target.body.begin();
206 for(NodeList<Statement>::const_iterator i=source.body.begin(); i!=source.body.end(); ++i)
207 target.body.insert(insert_point, (*i)->clone());