1 #include <msp/core/application.h>
2 #include <msp/core/getopt.h>
3 #include <msp/gl/glsl/compiler.h>
4 #include <msp/gl/glsl/glsl_error.h>
5 #include <msp/io/print.h>
6 #include <msp/strings/utils.h>
8 class GlslCompiler: public Msp::RegisteredApplication<GlslCompiler>
11 std::string source_fn;
12 Msp::GL::SL::Compiler::Mode compile_mode;
13 std::map<std::string, int> spec_values;
16 Msp::GL::SL::Stage::Type stage;
20 GlslCompiler(int, char **);
28 GlslCompiler::GlslCompiler(int argc, char **argv):
29 compile_mode(GL::SL::Compiler::PROGRAM),
32 stage(GL::SL::Stage::SHARED),
36 vector<string> spec_values_in;
37 bool as_module = false;
40 getopt.add_option('c', "combined", combined, GetOpt::NO_ARG).set_help("Output combined GLSL");
41 getopt.add_option('a', "dump-ast", dump_ast, GetOpt::NO_ARG).set_help("Dump AST for debugging");
42 getopt.add_option('p', "parse_only", parse_only, GetOpt::NO_ARG).set_help("Only parse the loaded source (implies -a)");
43 getopt.add_option('e', "specialize", spec_values_in, GetOpt::REQUIRED_ARG).set_help("Set specialization constant", "NAME:VALUE");
44 getopt.add_option('s', "stage", stage_str, GetOpt::REQUIRED_ARG).set_help("Output GLSL for STAGE", "STAGE");
45 getopt.add_option('m', "module", as_module, GetOpt::NO_ARG).set_help("Compile as unspecialized module");
46 getopt.add_argument("source", source_fn, GetOpt::REQUIRED_ARG).set_help("GLSL file to compile");
50 compile_mode = GL::SL::Compiler::MODULE;
54 if(!stage_str.empty())
55 throw usage_error("-s can't be used with -p");
59 if(stage_str=="vertex")
60 stage = GL::SL::Stage::VERTEX;
61 else if(stage_str=="geometry")
62 stage = GL::SL::Stage::GEOMETRY;
63 else if(stage_str=="fragment")
64 stage = GL::SL::Stage::FRAGMENT;
68 for(vector<string>::const_iterator i=spec_values_in.begin(); i!=spec_values_in.end(); ++i)
70 unsigned colon = i->find(':');
71 if(colon==string::npos || colon==0 || colon+1>=i->size())
72 throw usage_error("Invalid specialization value");
74 string value_str = i->substr(colon+1);
76 if(isnumrc(value_str))
77 value = lexical_cast<int>(value_str);
79 value = lexical_cast<bool>(value_str);
80 spec_values[i->substr(0, colon)] = value;
84 int GlslCompiler::main()
86 GL::SL::Compiler compiler(GL::SL::Features::all());
87 IO::File file(source_fn);
88 compiler.load_source(file, source_fn);
89 if(compile_mode==GL::SL::Compiler::PROGRAM)
90 compiler.specialize(spec_values);
95 compiler.compile(compile_mode);
96 string diag = compiler.get_diagnostics();
98 IO::print("Diagnostic messages from compiler:\n%s\n", diag);
100 catch(const GL::SL::invalid_shader_source &exc)
105 IO::print("Compilation resulted in errors:\n%s\n", exc.what());
107 stage = GL::SL::Stage::SHARED;
113 vector<GL::SL::Stage::Type> stages = compiler.get_stages();
114 for(vector<GL::SL::Stage::Type>::const_iterator i=stages.begin(); i!=stages.end(); ++i)
115 IO::print("%s\n", compiler.get_stage_debug(*i));
119 IO::print("%s\n", compiler.get_combined_glsl());
120 else if(stage!=GL::SL::Stage::SHARED)
121 IO::print("%s\n", compiler.get_stage_glsl(stage));