1 #include <msp/core/algorithm.h>
2 #include <msp/gl/extensions/ext_gpu_shader4.h>
3 #include <msp/strings/format.h>
4 #include <msp/strings/regex.h>
5 #include <msp/strings/utils.h>
6 #include "compatibility.h"
12 #include "resources.h"
32 void Compiler::clear()
35 module = new Module();
36 imported_names.clear();
39 void Compiler::set_source(const string &source, const string &src_name)
43 imported_names.push_back(src_name);
44 append_module(parser.parse(source, src_name, 1), 0);
47 void Compiler::load_source(IO::Base &io, DataFile::Collection *res, const string &src_name)
51 imported_names.push_back(src_name);
52 append_module(parser.parse(io, src_name, 1), res);
55 void Compiler::load_source(IO::Base &io, const string &src_name)
57 load_source(io, 0, src_name);
60 void Compiler::compile()
62 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
64 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); )
67 i = module->stages.begin();
71 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
75 void Compiler::add_shaders(Program &program)
78 throw invalid_operation("Compiler::add_shaders");
82 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
84 string stage_src = Formatter().apply(*i);
86 if(i->type==Stage::VERTEX)
88 program.attach_shader_owned(new VertexShader(stage_src));
89 for(map<string, unsigned>::iterator j=i->locations.begin(); j!=i->locations.end(); ++j)
90 program.bind_attribute(j->second, j->first);
92 else if(i->type==Stage::GEOMETRY)
93 program.attach_shader_owned(new GeometryShader(stage_src));
94 else if(i->type==Stage::FRAGMENT)
96 program.attach_shader_owned(new FragmentShader(stage_src));
99 for(map<string, unsigned>::iterator j=i->locations.begin(); j!=i->locations.end(); ++j)
100 program.bind_fragment_data(j->second, j->first);
105 catch(const compile_error &e)
107 static const Regex r_message("^(([0-9]+)\\(([0-9]+)\\) :|ERROR: ([0-9]+):([0-9]+):) (.*)$");
108 vector<string> lines = split(e.what(), '\n');
110 for(vector<string>::const_iterator i=lines.begin(); i!=lines.end(); ++i)
112 RegMatch m = r_message.match(*i);
119 index = lexical_cast<unsigned>(m[2].str);
120 line = lexical_cast<unsigned>(m[3].str);
124 index = lexical_cast<unsigned>(m[4].str);
125 line = lexical_cast<unsigned>(m[5].str);
127 const char *src = "<unknown>";
130 else if(index-1<imported_names.size())
131 src = imported_names[index-1].c_str();
132 translated += format("%s:%d: %s", src, line, m[6].str);
139 throw compile_error(translated);
143 void Compiler::append_module(Module &mod, DataFile::Collection *res)
145 vector<Import *> imports = NodeGatherer<Import>().apply(mod.shared);
146 for(vector<Import *>::iterator i=imports.begin(); i!=imports.end(); ++i)
147 import(res, (*i)->module);
148 NodeRemover(set<Node *>(imports.begin(), imports.end())).apply(mod.shared);
150 append_stage(mod.shared);
151 for(list<Stage>::iterator i=mod.stages.begin(); i!=mod.stages.end(); ++i)
155 void Compiler::append_stage(Stage &stage)
158 if(stage.type==Stage::SHARED)
159 target = &module->shared;
162 list<Stage>::iterator i;
163 for(i=module->stages.begin(); (i!=module->stages.end() && i->type<stage.type); ++i) ;
164 if(i==module->stages.end() || i->type>stage.type)
166 list<Stage>::iterator j = module->stages.insert(i, stage.type);
167 if(i!=module->stages.end())
170 if(i!=module->stages.begin())
177 if(stage.required_version>target->required_version)
178 target->required_version = stage.required_version;
179 for(NodeList<Statement>::iterator i=stage.content.body.begin(); i!=stage.content.body.end(); ++i)
180 target->content.body.push_back(*i);
181 DeclarationCombiner().apply(*target);
184 void Compiler::import(DataFile::Collection *resources, const string &name)
186 string fn = name+".glsl";
187 if(find(imported_names, fn)!=imported_names.end())
189 imported_names.push_back(fn);
191 RefPtr<IO::Seekable> io = (resources ? resources->open_raw(fn) : Resources::get_builtins().open(fn));
193 throw runtime_error(format("module %s not found", name));
194 Parser import_parser;
195 append_module(import_parser.parse(*io, fn, imported_names.size()), resources);
198 void Compiler::generate(Stage &stage)
200 if(module->shared.required_version>stage.required_version)
201 stage.required_version = module->shared.required_version;
202 inject_block(stage.content, module->shared.content);
204 DeclarationReorderer().apply(stage);
205 FunctionResolver().apply(stage);
206 VariableResolver().apply(stage);
207 InterfaceGenerator().apply(stage);
208 VariableResolver().apply(stage);
209 DeclarationReorderer().apply(stage);
210 FunctionResolver().apply(stage);
211 LegacyConverter().apply(stage);
214 bool Compiler::optimize(Stage &stage)
216 ConstantConditionEliminator().apply(stage);
218 set<FunctionDeclaration *> inlineable = InlineableFunctionLocator().apply(stage);
219 FunctionInliner(inlineable).apply(stage);
221 set<Node *> unused = UnusedVariableLocator().apply(stage);
222 set<Node *> unused2 = UnusedFunctionLocator().apply(stage);
223 unused.insert(unused2.begin(), unused2.end());
224 NodeRemover(unused).apply(stage);
226 return !unused.empty();
229 void Compiler::finalize(Stage &stage)
231 if(get_gl_api()==OPENGL_ES2)
232 DefaultPrecisionGenerator().apply(stage);
234 PrecisionRemover().apply(stage);
237 void Compiler::inject_block(Block &target, const Block &source)
239 NodeList<Statement>::iterator insert_point = target.body.begin();
240 for(NodeList<Statement>::const_iterator i=source.body.begin(); i!=source.body.end(); ++i)
241 target.body.insert(insert_point, (*i)->clone());