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"
11 #include "resources.h"
23 features(Features::from_context()),
27 Compiler::Compiler(const Features &f):
37 void Compiler::clear()
40 module = new Module();
41 imported_names.clear();
42 module->source_map.set_name(0, "<generated>");
45 void Compiler::set_source(const string &source, const string &src_name)
49 imported_names.push_back(src_name);
50 append_module(parser.parse(source, src_name, 1), 0);
53 void Compiler::load_source(IO::Base &io, DataFile::Collection *res, const string &src_name)
57 imported_names.push_back(src_name);
58 append_module(parser.parse(io, src_name, 1), res);
61 void Compiler::load_source(IO::Base &io, const string &src_name)
63 load_source(io, 0, src_name);
66 void Compiler::compile(Mode mode)
68 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
70 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); )
73 i = module->stages.begin();
77 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
81 string Compiler::get_combined_glsl() const
85 unsigned source_count = module->source_map.get_count();
86 for(unsigned i=1; i<source_count; ++i)
87 glsl += format("#pragma MSP source(%d, \"%s\")\n", i, module->source_map.get_name(i));
88 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
90 glsl += format("#pragma MSP stage(%s)\n", Stage::get_stage_name(i->type));
91 glsl += Formatter().apply(*i, MODULE);
98 vector<Stage::Type> Compiler::get_stages() const
100 vector<Stage::Type> stage_types;
101 stage_types.reserve(module->stages.size());
102 for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
103 stage_types.push_back(i->type);
107 string Compiler::get_stage_glsl(Stage::Type stage_type) const
109 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
110 if(i->type==stage_type)
111 return Formatter().apply(*i, PROGRAM);
112 throw key_error(Stage::get_stage_name(stage_type));
115 const map<string, unsigned> &Compiler::get_vertex_attributes() const
117 for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
118 if(i->type==Stage::VERTEX)
120 throw invalid_operation("Compiler::get_vertex_attributes");
123 const map<string, unsigned> &Compiler::get_fragment_outputs() const
125 for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
126 if(i->type==Stage::FRAGMENT)
128 throw invalid_operation("Compiler::get_fragment_outputs");
131 const SourceMap &Compiler::get_source_map() const
133 return module->source_map;
136 string Compiler::get_stage_debug(Stage::Type stage_type) const
138 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
139 if(i->type==stage_type)
140 return DumpTree().apply(*i);
141 throw key_error(Stage::get_stage_name(stage_type));
144 void Compiler::append_module(Module &mod, DataFile::Collection *res)
146 module->source_map.merge_from(mod.source_map);
148 vector<Import *> imports = NodeGatherer<Import>().apply(mod.shared);
149 for(vector<Import *>::iterator i=imports.begin(); i!=imports.end(); ++i)
150 import(res, (*i)->module);
151 NodeRemover().apply(mod.shared, set<Node *>(imports.begin(), imports.end()));
153 append_stage(mod.shared);
154 for(list<Stage>::iterator i=mod.stages.begin(); i!=mod.stages.end(); ++i)
158 void Compiler::append_stage(Stage &stage)
161 if(stage.type==Stage::SHARED)
162 target = &module->shared;
165 list<Stage>::iterator i;
166 for(i=module->stages.begin(); (i!=module->stages.end() && i->type<stage.type); ++i) ;
167 if(i==module->stages.end() || i->type>stage.type)
169 list<Stage>::iterator j = module->stages.insert(i, stage.type);
170 if(i!=module->stages.end())
173 if(i!=module->stages.begin())
180 if(stage.required_features.glsl_version>target->required_features.glsl_version)
181 target->required_features.glsl_version = stage.required_features.glsl_version;
182 for(NodeList<Statement>::iterator i=stage.content.body.begin(); i!=stage.content.body.end(); ++i)
183 target->content.body.push_back(*i);
184 DeclarationCombiner().apply(*target);
187 void Compiler::import(DataFile::Collection *resources, const string &name)
189 string fn = name+".glsl";
190 if(find(imported_names, fn)!=imported_names.end())
192 imported_names.push_back(fn);
194 RefPtr<IO::Seekable> io = (resources ? resources->open_raw(fn) : Resources::get_builtins().open(fn));
196 throw runtime_error(format("module %s not found", name));
197 Parser import_parser;
198 append_module(import_parser.parse(*io, fn, module->source_map.get_count()), resources);
201 void Compiler::generate(Stage &stage, Mode mode)
203 stage.required_features.gl_api = features.gl_api;
204 if(module->shared.required_features.glsl_version>stage.required_features.glsl_version)
205 stage.required_features.glsl_version = module->shared.required_features.glsl_version;
206 inject_block(stage.content, module->shared.content);
208 DeclarationReorderer().apply(stage);
209 BlockResolver().apply(stage);
210 FunctionResolver().apply(stage);
211 VariableResolver().apply(stage);
212 InterfaceGenerator().apply(stage);
213 VariableResolver().apply(stage);
214 DeclarationReorderer().apply(stage);
215 FunctionResolver().apply(stage);
217 LegacyConverter().apply(stage, features);
220 bool Compiler::optimize(Stage &stage)
222 ConstantConditionEliminator().apply(stage);
224 FunctionInliner().apply(stage);
225 BlockResolver().apply(stage);
226 VariableResolver().apply(stage);
228 bool result = UnusedVariableRemover().apply(stage);
229 result |= UnusedFunctionRemover().apply(stage);
234 void Compiler::finalize(Stage &stage, Mode mode)
236 if(get_gl_api()==OPENGL_ES2 && mode==PROGRAM)
237 DefaultPrecisionGenerator().apply(stage);
238 else if(mode==MODULE)
239 PrecisionRemover().apply(stage);
242 void Compiler::inject_block(Block &target, const Block &source)
244 NodeList<Statement>::iterator insert_point = target.body.begin();
245 for(NodeList<Statement>::const_iterator i=source.body.begin(); i!=source.body.end(); ++i)
246 target.body.insert(insert_point, (*i)->clone());