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"
22 features(Features::from_context()),
26 Compiler::Compiler(const Features &f):
36 void Compiler::clear()
39 module = new Module();
40 imported_names.clear();
41 module->source_map.set_name(0, "<generated>");
44 void Compiler::set_source(const string &source, const string &src_name)
48 imported_names.push_back(src_name);
49 append_module(parser.parse(source, src_name, 1), 0);
52 void Compiler::load_source(IO::Base &io, DataFile::Collection *res, const string &src_name)
56 imported_names.push_back(src_name);
57 append_module(parser.parse(io, src_name, 1), res);
60 void Compiler::load_source(IO::Base &io, const string &src_name)
62 load_source(io, 0, src_name);
65 void Compiler::compile(Mode mode)
67 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
69 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); )
72 i = module->stages.begin();
76 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
80 string Compiler::get_combined_glsl() const
84 unsigned source_count = module->source_map.get_count();
85 for(unsigned i=1; i<source_count; ++i)
86 glsl += format("#pragma MSP source(%d, \"%s\")\n", i, module->source_map.get_name(i));
87 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
89 glsl += format("#pragma MSP stage(%s)\n", Stage::get_stage_name(i->type));
90 glsl += Formatter().apply(*i, MODULE);
97 vector<Stage::Type> Compiler::get_stages() const
99 vector<Stage::Type> stage_types;
100 stage_types.reserve(module->stages.size());
101 for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
102 stage_types.push_back(i->type);
106 string Compiler::get_stage_glsl(Stage::Type stage_type) const
108 for(list<Stage>::iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
109 if(i->type==stage_type)
110 return Formatter().apply(*i, PROGRAM);
111 throw key_error(Stage::get_stage_name(stage_type));
114 const map<string, unsigned> &Compiler::get_vertex_attributes() const
116 for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
117 if(i->type==Stage::VERTEX)
119 throw invalid_operation("Compiler::get_vertex_attributes");
122 const map<string, unsigned> &Compiler::get_fragment_outputs() const
124 for(list<Stage>::const_iterator i=module->stages.begin(); i!=module->stages.end(); ++i)
125 if(i->type==Stage::FRAGMENT)
127 throw invalid_operation("Compiler::get_fragment_outputs");
130 const SourceMap &Compiler::get_source_map() const
132 return module->source_map;
135 void Compiler::append_module(Module &mod, DataFile::Collection *res)
137 module->source_map.merge_from(mod.source_map);
139 vector<Import *> imports = NodeGatherer<Import>().apply(mod.shared);
140 for(vector<Import *>::iterator i=imports.begin(); i!=imports.end(); ++i)
141 import(res, (*i)->module);
142 NodeRemover().apply(mod.shared, set<Node *>(imports.begin(), imports.end()));
144 append_stage(mod.shared);
145 for(list<Stage>::iterator i=mod.stages.begin(); i!=mod.stages.end(); ++i)
149 void Compiler::append_stage(Stage &stage)
152 if(stage.type==Stage::SHARED)
153 target = &module->shared;
156 list<Stage>::iterator i;
157 for(i=module->stages.begin(); (i!=module->stages.end() && i->type<stage.type); ++i) ;
158 if(i==module->stages.end() || i->type>stage.type)
160 list<Stage>::iterator j = module->stages.insert(i, stage.type);
161 if(i!=module->stages.end())
164 if(i!=module->stages.begin())
171 if(stage.required_features.glsl_version>target->required_features.glsl_version)
172 target->required_features.glsl_version = stage.required_features.glsl_version;
173 for(NodeList<Statement>::iterator i=stage.content.body.begin(); i!=stage.content.body.end(); ++i)
174 target->content.body.push_back(*i);
175 DeclarationCombiner().apply(*target);
178 void Compiler::import(DataFile::Collection *resources, const string &name)
180 string fn = name+".glsl";
181 if(find(imported_names, fn)!=imported_names.end())
183 imported_names.push_back(fn);
185 RefPtr<IO::Seekable> io = (resources ? resources->open_raw(fn) : Resources::get_builtins().open(fn));
187 throw runtime_error(format("module %s not found", name));
188 Parser import_parser;
189 append_module(import_parser.parse(*io, fn, module->source_map.get_count()), resources);
192 void Compiler::generate(Stage &stage, Mode mode)
194 stage.required_features.gl_api = features.gl_api;
195 if(module->shared.required_features.glsl_version>stage.required_features.glsl_version)
196 stage.required_features.glsl_version = module->shared.required_features.glsl_version;
197 inject_block(stage.content, module->shared.content);
199 DeclarationReorderer().apply(stage);
200 BlockResolver().apply(stage);
201 FunctionResolver().apply(stage);
202 VariableResolver().apply(stage);
203 InterfaceGenerator().apply(stage);
204 VariableResolver().apply(stage);
205 DeclarationReorderer().apply(stage);
206 FunctionResolver().apply(stage);
208 LegacyConverter().apply(stage, features);
211 bool Compiler::optimize(Stage &stage)
213 ConstantConditionEliminator().apply(stage);
215 FunctionInliner().apply(stage);
216 BlockResolver().apply(stage);
217 VariableResolver().apply(stage);
219 bool result = UnusedVariableRemover().apply(stage);
220 result |= UnusedFunctionRemover().apply(stage);
225 void Compiler::finalize(Stage &stage, Mode mode)
227 if(get_gl_api()==OPENGL_ES2 && mode==PROGRAM)
228 DefaultPrecisionGenerator().apply(stage);
229 else if(mode==MODULE)
230 PrecisionRemover().apply(stage);
233 void Compiler::inject_block(Block &target, const Block &source)
235 NodeList<Statement>::iterator insert_point = target.body.begin();
236 for(NodeList<Statement>::const_iterator i=source.body.begin(); i!=source.body.end(); ++i)
237 target.body.insert(insert_point, (*i)->clone());