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(Mode mode)
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 string Compiler::get_combined_glsl() const
78 unsigned source_count = module->source_map.get_count();
79 for(unsigned i=1; i<source_count; ++i)
80 glsl += format("#pragma MSP source(%d, \"%s\")\n", i, module->source_map.get_name(i));
81 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
83 glsl += format("#pragma MSP stage(%s)\n", Stage::get_stage_name(i->type));
84 glsl += Formatter().apply(*i, MODULE);
91 vector<Stage::Type> Compiler::get_stages() const
93 vector<Stage::Type> stage_types;
94 stage_types.reserve(module->stages.size());
95 for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
96 stage_types.push_back(i->type);
100 string Compiler::get_stage_glsl(Stage::Type stage_type) const
102 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
103 if(i->type==stage_type)
104 return Formatter().apply(*i, PROGRAM);
105 throw key_error(Stage::get_stage_name(stage_type));
108 const map<string, unsigned> &Compiler::get_vertex_attributes() const
110 for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
111 if(i->type==Stage::VERTEX)
113 throw invalid_operation("Compiler::get_vertex_attributes");
116 const map<string, unsigned> &Compiler::get_fragment_outputs() const
118 for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
119 if(i->type==Stage::FRAGMENT)
121 throw invalid_operation("Compiler::get_fragment_outputs");
124 const SourceMap &Compiler::get_source_map() const
126 return module->source_map;
129 void Compiler::append_module(Module &mod, DataFile::Collection *res)
131 module->source_map.merge_from(mod.source_map);
133 vector<Import *> imports = NodeGatherer<Import>().apply(mod.shared);
134 for(vector<Import *>::iterator i=imports.begin(); i!=imports.end(); ++i)
135 import(res, (*i)->module);
136 NodeRemover().apply(mod.shared, set<Node *>(imports.begin(), imports.end()));
138 append_stage(mod.shared);
139 for(list<Stage>::iterator i=mod.stages.begin(); i!=mod.stages.end(); ++i)
143 void Compiler::append_stage(Stage &stage)
146 if(stage.type==Stage::SHARED)
147 target = &module->shared;
150 list<Stage>::iterator i;
151 for(i=module->stages.begin(); (i!=module->stages.end() && i->type<stage.type); ++i) ;
152 if(i==module->stages.end() || i->type>stage.type)
154 list<Stage>::iterator j = module->stages.insert(i, stage.type);
155 if(i!=module->stages.end())
158 if(i!=module->stages.begin())
165 if(stage.required_version>target->required_version)
166 target->required_version = stage.required_version;
167 for(NodeList<Statement>::iterator i=stage.content.body.begin(); i!=stage.content.body.end(); ++i)
168 target->content.body.push_back(*i);
169 DeclarationCombiner().apply(*target);
172 void Compiler::import(DataFile::Collection *resources, const string &name)
174 string fn = name+".glsl";
175 if(find(imported_names, fn)!=imported_names.end())
177 imported_names.push_back(fn);
179 RefPtr<IO::Seekable> io = (resources ? resources->open_raw(fn) : Resources::get_builtins().open(fn));
181 throw runtime_error(format("module %s not found", name));
182 Parser import_parser;
183 append_module(import_parser.parse(*io, fn, module->source_map.get_count()), resources);
186 void Compiler::generate(Stage &stage, Mode mode)
188 if(module->shared.required_version>stage.required_version)
189 stage.required_version = module->shared.required_version;
190 inject_block(stage.content, module->shared.content);
192 DeclarationReorderer().apply(stage);
193 BlockResolver().apply(stage);
194 FunctionResolver().apply(stage);
195 VariableResolver().apply(stage);
196 InterfaceGenerator().apply(stage);
197 VariableResolver().apply(stage);
198 DeclarationReorderer().apply(stage);
199 FunctionResolver().apply(stage);
201 LegacyConverter().apply(stage);
204 bool Compiler::optimize(Stage &stage)
206 ConstantConditionEliminator().apply(stage);
208 FunctionInliner().apply(stage);
209 BlockResolver().apply(stage);
210 VariableResolver().apply(stage);
212 bool result = UnusedVariableRemover().apply(stage);
213 result |= UnusedFunctionRemover().apply(stage);
218 void Compiler::finalize(Stage &stage, Mode mode)
220 if(get_gl_api()==OPENGL_ES2 && mode==PROGRAM)
221 DefaultPrecisionGenerator().apply(stage);
222 else if(mode==MODULE)
223 PrecisionRemover().apply(stage);
226 void Compiler::inject_block(Block &target, const Block &source)
228 NodeList<Statement>::iterator insert_point = target.body.begin();
229 for(NodeList<Statement>::const_iterator i=source.body.begin(); i!=source.body.end(); ++i)
230 target.body.insert(insert_point, (*i)->clone());